GitHub-Spring
/
spring-framework
mirror of https://github.com/spring-projects/spring-framework.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
Browse Source

Logically reorganize methods in ScriptUtils 

See gh-26947
pull/26952/head
Sam Brannen 5 years ago
parent
fab7b1cebe
commit
4c642ccdcd
2 changed files with 646 additions and 644 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 757
      spring-jdbc/src/main/java/org/springframework/jdbc/datasource/init/ScriptUtils.java
  2. 533
      spring-r2dbc/src/main/java/org/springframework/r2dbc/connection/init/ScriptUtils.java

757
spring-jdbc/src/main/java/org/springframework/jdbc/datasource/init/ScriptUtils.java
Unescape View File

@ -35,7 +35,7 @@ import org.springframework.util.Assert; @@ -35,7 +35,7 @@ import org.springframework.util.Assert;
import org.springframework.util.StringUtils;
/**
* Generic utility methods for working with SQL scripts.
* Generic utility methods for working with SQL scripts in conjunction with JDBC.
*
* <p>Mainly for internal use within the framework.
*
@ -50,6 +50,7 @@ import org.springframework.util.StringUtils; @@ -50,6 +50,7 @@ import org.springframework.util.StringUtils;
* @author Nicolas Debeissat
* @author Phillip Webb
* @since 4.0.3
* @see org.springframework.r2dbc.connection.init.ScriptUtils
*/
public abstract class ScriptUtils {
@ -102,197 +103,207 @@ public abstract class ScriptUtils { @@ -102,197 +103,207 @@ public abstract class ScriptUtils {
/**
* Split an SQL script into separate statements delimited by the provided
* separator character. Each individual statement will be added to the
* provided {@code List}.
* <p>Within the script, {@value #DEFAULT_COMMENT_PREFIX} will be used as the
* comment prefix; any text beginning with the comment prefix and extending to
* the end of the line will be omitted from the output. Similarly,
* {@value #DEFAULT_BLOCK_COMMENT_START_DELIMITER} and
* {@value #DEFAULT_BLOCK_COMMENT_END_DELIMITER} will be used as the
* <em>start</em> and <em>end</em> block comment delimiters: any text enclosed
* in a block comment will be omitted from the output. In addition, multiple
* adjacent whitespace characters will be collapsed into a single space.
* @param script the SQL script
* @param separator character separating each statement (typically a ';')
* @param statements the list that will contain the individual statements
* @throws ScriptException if an error occurred while splitting the SQL script
* @see #splitSqlScript(String, String, List)
* @see #splitSqlScript(EncodedResource, String, String, String, String, String, List)
* Execute the given SQL script using default settings for statement
* separators, comment delimiters, and exception handling flags.
* <p>Statement separators and comments will be removed before executing
* individual statements within the supplied script.
* <p><strong>Warning</strong>: this method does <em>not</em> release the
* provided {@link Connection}.
* @param connection the JDBC connection to use to execute the script; already
* configured and ready to use
* @param resource the resource to load the SQL script from; encoded with the
* current platform's default encoding
* @throws ScriptException if an error occurred while executing the SQL script
* @see #executeSqlScript(Connection, EncodedResource, boolean, boolean, String, String, String, String)
* @see #DEFAULT_STATEMENT_SEPARATOR
* @see #DEFAULT_COMMENT_PREFIX
* @see #DEFAULT_BLOCK_COMMENT_START_DELIMITER
* @see #DEFAULT_BLOCK_COMMENT_END_DELIMITER
* @see org.springframework.jdbc.datasource.DataSourceUtils#getConnection
* @see org.springframework.jdbc.datasource.DataSourceUtils#releaseConnection
*/
public static void splitSqlScript(String script, char separator, List<String> statements) throws ScriptException {
splitSqlScript(script, String.valueOf(separator), statements);
public static void executeSqlScript(Connection connection, Resource resource) throws ScriptException {
executeSqlScript(connection, new EncodedResource(resource));
}
/**
* Split an SQL script into separate statements delimited by the provided
* separator string. Each individual statement will be added to the
* provided {@code List}.
* <p>Within the script, {@value #DEFAULT_COMMENT_PREFIX} will be used as the
* comment prefix; any text beginning with the comment prefix and extending to
* the end of the line will be omitted from the output. Similarly,
* {@value #DEFAULT_BLOCK_COMMENT_START_DELIMITER} and
* {@value #DEFAULT_BLOCK_COMMENT_END_DELIMITER} will be used as the
* <em>start</em> and <em>end</em> block comment delimiters: any text enclosed
* in a block comment will be omitted from the output. In addition, multiple
* adjacent whitespace characters will be collapsed into a single space.
* @param script the SQL script
* @param separator text separating each statement
* (typically a ';' or newline character)
* @param statements the list that will contain the individual statements
* @throws ScriptException if an error occurred while splitting the SQL script
* @see #splitSqlScript(String, char, List)
* @see #splitSqlScript(EncodedResource, String, String, String, String, String, List)
* Execute the given SQL script using default settings for statement
* separators, comment delimiters, and exception handling flags.
* <p>Statement separators and comments will be removed before executing
* individual statements within the supplied script.
* <p><strong>Warning</strong>: this method does <em>not</em> release the
* provided {@link Connection}.
* @param connection the JDBC connection to use to execute the script; already
* configured and ready to use
* @param resource the resource (potentially associated with a specific encoding)
* to load the SQL script from
* @throws ScriptException if an error occurred while executing the SQL script
* @see #executeSqlScript(Connection, EncodedResource, boolean, boolean, String, String, String, String)
* @see #DEFAULT_STATEMENT_SEPARATOR
* @see #DEFAULT_COMMENT_PREFIX
* @see #DEFAULT_BLOCK_COMMENT_START_DELIMITER
* @see #DEFAULT_BLOCK_COMMENT_END_DELIMITER
* @see org.springframework.jdbc.datasource.DataSourceUtils#getConnection
* @see org.springframework.jdbc.datasource.DataSourceUtils#releaseConnection
*/
public static void splitSqlScript(String script, String separator, List<String> statements) throws ScriptException {
splitSqlScript(null, script, separator, DEFAULT_COMMENT_PREFIX, DEFAULT_BLOCK_COMMENT_START_DELIMITER,
DEFAULT_BLOCK_COMMENT_END_DELIMITER, statements);
public static void executeSqlScript(Connection connection, EncodedResource resource) throws ScriptException {
executeSqlScript(connection, resource, false, false, DEFAULT_COMMENT_PREFIX, DEFAULT_STATEMENT_SEPARATOR,
DEFAULT_BLOCK_COMMENT_START_DELIMITER, DEFAULT_BLOCK_COMMENT_END_DELIMITER);
}
/**
* Split an SQL script into separate statements delimited by the provided
* separator string. Each individual statement will be added to the provided
* {@code List}.
* <p>Within the script, the provided {@code commentPrefix} will be honored:
* any text beginning with the comment prefix and extending to the end of the
* line will be omitted from the output. Similarly, the provided
* {@code blockCommentStartDelimiter} and {@code blockCommentEndDelimiter}
* delimiters will be honored: any text enclosed in a block comment will be
* omitted from the output. In addition, multiple adjacent whitespace characters
* will be collapsed into a single space.
* @param resource the resource from which the script was read
* @param script the SQL script
* @param separator text separating each statement
* (typically a ';' or newline character)
* @param commentPrefix the prefix that identifies SQL line comments
* (typically "--")
* @param blockCommentStartDelimiter the <em>start</em> block comment delimiter;
* never {@code null} or empty
* @param blockCommentEndDelimiter the <em>end</em> block comment delimiter;
* never {@code null} or empty
* @param statements the list that will contain the individual statements
* @throws ScriptException if an error occurred while splitting the SQL script
* Execute the given SQL script.
* <p>Statement separators and comments will be removed before executing
* individual statements within the supplied script.
* <p><strong>Warning</strong>: this method does <em>not</em> release the
* provided {@link Connection}.
* @param connection the JDBC connection to use to execute the script; already
* configured and ready to use
* @param resource the resource (potentially associated with a specific encoding)
* to load the SQL script from
* @param continueOnError whether or not to continue without throwing an exception
* in the event of an error
* @param ignoreFailedDrops whether or not to continue in the event of specifically
* an error on a {@code DROP} statement
* @param commentPrefix the prefix that identifies single-line comments in the
* SQL script (typically "--")
* @param separator the script statement separator; defaults to
* {@value #DEFAULT_STATEMENT_SEPARATOR} if not specified and falls back to
* {@value #FALLBACK_STATEMENT_SEPARATOR} as a last resort; may be set to
* {@value #EOF_STATEMENT_SEPARATOR} to signal that the script contains a
* single statement without a separator
* @param blockCommentStartDelimiter the <em>start</em> block comment delimiter
* @param blockCommentEndDelimiter the <em>end</em> block comment delimiter
* @throws ScriptException if an error occurred while executing the SQL script
* @see #DEFAULT_STATEMENT_SEPARATOR
* @see #FALLBACK_STATEMENT_SEPARATOR
* @see #EOF_STATEMENT_SEPARATOR
* @see org.springframework.jdbc.datasource.DataSourceUtils#getConnection
* @see org.springframework.jdbc.datasource.DataSourceUtils#releaseConnection
*/
public static void splitSqlScript(@Nullable EncodedResource resource, String script,
String separator, String commentPrefix, String blockCommentStartDelimiter,
String blockCommentEndDelimiter, List<String> statements) throws ScriptException {
public static void executeSqlScript(Connection connection, EncodedResource resource, boolean continueOnError,
boolean ignoreFailedDrops, String commentPrefix, @Nullable String separator,
String blockCommentStartDelimiter, String blockCommentEndDelimiter) throws ScriptException {
Assert.hasText(commentPrefix, "'commentPrefix' must not be null or empty");
splitSqlScript(resource, script, separator, new String[] { commentPrefix },
blockCommentStartDelimiter, blockCommentEndDelimiter, statements);
executeSqlScript(connection, resource, continueOnError, ignoreFailedDrops,
new String[] { commentPrefix }, separator, blockCommentStartDelimiter,
blockCommentEndDelimiter);
}
/**
* Split an SQL script into separate statements delimited by the provided
* separator string. Each individual statement will be added to the provided
* {@code List}.
* <p>Within the script, the provided {@code commentPrefixes} will be honored:
* any text beginning with one of the comment prefixes and extending to the
* end of the line will be omitted from the output. Similarly, the provided
* {@code blockCommentStartDelimiter} and {@code blockCommentEndDelimiter}
* delimiters will be honored: any text enclosed in a block comment will be
* omitted from the output. In addition, multiple adjacent whitespace characters
* will be collapsed into a single space.
* @param resource the resource from which the script was read
* @param script the SQL script
* @param separator text separating each statement
* (typically a ';' or newline character)
* @param commentPrefixes the prefixes that identify SQL line comments
* (typically "--")
* @param blockCommentStartDelimiter the <em>start</em> block comment delimiter;
* never {@code null} or empty
* @param blockCommentEndDelimiter the <em>end</em> block comment delimiter;
* never {@code null} or empty
* @param statements the list that will contain the individual statements
* @throws ScriptException if an error occurred while splitting the SQL script
* Execute the given SQL script.
* <p>Statement separators and comments will be removed before executing
* individual statements within the supplied script.
* <p><strong>Warning</strong>: this method does <em>not</em> release the
* provided {@link Connection}.
* @param connection the JDBC connection to use to execute the script; already
* configured and ready to use
* @param resource the resource (potentially associated with a specific encoding)
* to load the SQL script from
* @param continueOnError whether or not to continue without throwing an exception
* in the event of an error
* @param ignoreFailedDrops whether or not to continue in the event of specifically
* an error on a {@code DROP} statement
* @param commentPrefixes the prefixes that identify single-line comments in the
* SQL script (typically "--")
* @param separator the script statement separator; defaults to
* {@value #DEFAULT_STATEMENT_SEPARATOR} if not specified and falls back to
* {@value #FALLBACK_STATEMENT_SEPARATOR} as a last resort; may be set to
* {@value #EOF_STATEMENT_SEPARATOR} to signal that the script contains a
* single statement without a separator
* @param blockCommentStartDelimiter the <em>start</em> block comment delimiter
* @param blockCommentEndDelimiter the <em>end</em> block comment delimiter
* @throws ScriptException if an error occurred while executing the SQL script
* @since 5.2
* @see #DEFAULT_STATEMENT_SEPARATOR
* @see #FALLBACK_STATEMENT_SEPARATOR
* @see #EOF_STATEMENT_SEPARATOR
* @see org.springframework.jdbc.datasource.DataSourceUtils#getConnection
* @see org.springframework.jdbc.datasource.DataSourceUtils#releaseConnection
*/
public static void splitSqlScript(@Nullable EncodedResource resource, String script,
String separator, String[] commentPrefixes, String blockCommentStartDelimiter,
String blockCommentEndDelimiter, List<String> statements) throws ScriptException {
Assert.hasText(script, "'script' must not be null or empty");
Assert.notNull(separator, "'separator' must not be null");
Assert.notEmpty(commentPrefixes, "'commentPrefixes' must not be null or empty");
for (String commentPrefix : commentPrefixes) {
Assert.hasText(commentPrefix, "'commentPrefixes' must not contain null or empty elements");
}
Assert.hasText(blockCommentStartDelimiter, "'blockCommentStartDelimiter' must not be null or empty");
Assert.hasText(blockCommentEndDelimiter, "'blockCommentEndDelimiter' must not be null or empty");
public static void executeSqlScript(Connection connection, EncodedResource resource, boolean continueOnError,
boolean ignoreFailedDrops, String[] commentPrefixes, @Nullable String separator,
String blockCommentStartDelimiter, String blockCommentEndDelimiter) throws ScriptException {
StringBuilder sb = new StringBuilder();
boolean inSingleQuote = false;
boolean inDoubleQuote = false;
boolean inEscape = false;
try {
if (logger.isDebugEnabled()) {
logger.debug("Executing SQL script from " + resource);
}
long startTime = System.currentTimeMillis();
for (int i = 0; i < script.length(); i++) {
char c = script.charAt(i);
if (inEscape) {
inEscape = false;
sb.append(c);
continue;
String script;
try {
script = readScript(resource, separator, commentPrefixes, blockCommentEndDelimiter);
}
// MySQL style escapes
if (c == '\\') {
inEscape = true;
sb.append(c);
continue;
catch (IOException ex) {
throw new CannotReadScriptException(resource, ex);
}
if (!inDoubleQuote && (c == '\'')) {
inSingleQuote = !inSingleQuote;
if (separator == null) {
separator = DEFAULT_STATEMENT_SEPARATOR;
}
else if (!inSingleQuote && (c == '"')) {
inDoubleQuote = !inDoubleQuote;
if (!EOF_STATEMENT_SEPARATOR.equals(separator) &&
!containsStatementSeparator(resource, script, separator, commentPrefixes,
blockCommentStartDelimiter, blockCommentEndDelimiter)) {
separator = FALLBACK_STATEMENT_SEPARATOR;
}
if (!inSingleQuote && !inDoubleQuote) {
if (script.startsWith(separator, i)) {
// We've reached the end of the current statement
if (sb.length() > 0) {
statements.add(sb.toString());
sb = new StringBuilder();
}
i += separator.length() - 1;
continue;
}
else if (startsWithAny(script, commentPrefixes, i)) {
// Skip over any content from the start of the comment to the EOL
int indexOfNextNewline = script.indexOf('\n', i);
if (indexOfNextNewline > i) {
i = indexOfNextNewline;
continue;
List<String> statements = new ArrayList<>();
splitSqlScript(resource, script, separator, commentPrefixes, blockCommentStartDelimiter,
blockCommentEndDelimiter, statements);
int stmtNumber = 0;
Statement stmt = connection.createStatement();
try {
for (String statement : statements) {
stmtNumber++;
try {
stmt.execute(statement);
int rowsAffected = stmt.getUpdateCount();
if (logger.isDebugEnabled()) {
logger.debug(rowsAffected + " returned as update count for SQL: " + statement);
SQLWarning warningToLog = stmt.getWarnings();
while (warningToLog != null) {
logger.debug("SQLWarning ignored: SQL state '" + warningToLog.getSQLState() +
"', error code '" + warningToLog.getErrorCode() +
"', message [" + warningToLog.getMessage() + "]");
warningToLog = warningToLog.getNextWarning();
}
}
}
else {
// If there's no EOL, we must be at the end of the script, so stop here.
break;
catch (SQLException ex) {
boolean dropStatement = StringUtils.startsWithIgnoreCase(statement.trim(), "drop");
if (continueOnError || (dropStatement && ignoreFailedDrops)) {
if (logger.isDebugEnabled()) {
logger.debug(ScriptStatementFailedException.buildErrorMessage(statement, stmtNumber, resource), ex);
}
}
else {
throw new ScriptStatementFailedException(statement, stmtNumber, resource, ex);
}
}
}
else if (script.startsWith(blockCommentStartDelimiter, i)) {
// Skip over any block comments
int indexOfCommentEnd = script.indexOf(blockCommentEndDelimiter, i);
if (indexOfCommentEnd > i) {
i = indexOfCommentEnd + blockCommentEndDelimiter.length() - 1;
continue;
}
else {
throw new ScriptParseException(
"Missing block comment end delimiter: " + blockCommentEndDelimiter, resource);
}
}
finally {
try {
stmt.close();
}
else if (c == ' ' || c == '\r' || c == '\n' || c == '\t') {
// Avoid multiple adjacent whitespace characters
if (sb.length() > 0 && sb.charAt(sb.length() - 1) != ' ') {
c = ' ';
}
else {
continue;
}
catch (Throwable ex) {
logger.trace("Could not close JDBC Statement", ex);
}
}
sb.append(c);
}
if (StringUtils.hasText(sb)) {
statements.add(sb.toString());
long elapsedTime = System.currentTimeMillis() - startTime;
if (logger.isDebugEnabled()) {
logger.debug("Executed SQL script from " + resource + " in " + elapsedTime + " ms.");
}
}
catch (Exception ex) {
if (ex instanceof ScriptException) {
throw (ScriptException) ex;
}
throw new UncategorizedScriptException(
"Failed to execute database script from resource [" + resource + "]", ex);
}
}
@ -312,7 +323,7 @@ public abstract class ScriptUtils { @@ -312,7 +323,7 @@ public abstract class ScriptUtils {
* @throws IOException in case of I/O errors
*/
static String readScript(EncodedResource resource, @Nullable String separator,
@Nullable String[] commentPrefixes, @Nullable String blockCommentEndDelimiter) throws IOException {
String[] commentPrefixes, String blockCommentEndDelimiter) throws IOException {
try (LineNumberReader lnr = new LineNumberReader(resource.getReader())) {
return readScript(lnr, commentPrefixes, separator, blockCommentEndDelimiter);
@ -393,15 +404,6 @@ public abstract class ScriptUtils { @@ -393,15 +404,6 @@ public abstract class ScriptUtils {
}
}
private static boolean startsWithAny(String script, String[] prefixes, int offset) {
for (String prefix : prefixes) {
if (script.startsWith(prefix, offset)) {
return true;
}
}
return false;
}
/**
* Determine if the provided SQL script contains the specified delimiter.
* <p>This method is intended to be used to find the string delimiting each
@ -441,10 +443,185 @@ public abstract class ScriptUtils { @@ -441,10 +443,185 @@ public abstract class ScriptUtils {
* (typically <code>"*&#47;"</code>)
* @since 5.2.16
*/
private static boolean containsStatementSeparator(@Nullable EncodedResource resource, String script,
private static boolean containsStatementSeparator(@Nullable EncodedResource resource, String script,
String separator, String[] commentPrefixes, String blockCommentStartDelimiter,
String blockCommentEndDelimiter) throws ScriptException {
boolean inSingleQuote = false;
boolean inDoubleQuote = false;
boolean inEscape = false;
for (int i = 0; i < script.length(); i++) {
char c = script.charAt(i);
if (inEscape) {
inEscape = false;
continue;
}
// MySQL style escapes
if (c == '\\') {
inEscape = true;
continue;
}
if (!inDoubleQuote && (c == '\'')) {
inSingleQuote = !inSingleQuote;
}
else if (!inSingleQuote && (c == '"')) {
inDoubleQuote = !inDoubleQuote;
}
if (!inSingleQuote && !inDoubleQuote) {
if (script.startsWith(separator, i)) {
return true;
}
else if (startsWithAny(script, commentPrefixes, i)) {
// Skip over any content from the start of the comment to the EOL
int indexOfNextNewline = script.indexOf('\n', i);
if (indexOfNextNewline > i) {
i = indexOfNextNewline;
continue;
}
else {
// If there's no EOL, we must be at the end of the script, so stop here.
break;
}
}
else if (script.startsWith(blockCommentStartDelimiter, i)) {
// Skip over any block comments
int indexOfCommentEnd = script.indexOf(blockCommentEndDelimiter, i);
if (indexOfCommentEnd > i) {
i = indexOfCommentEnd + blockCommentEndDelimiter.length() - 1;
continue;
}
else {
throw new ScriptParseException(
"Missing block comment end delimiter: " + blockCommentEndDelimiter, resource);
}
}
}
}
return false;
}
/**
* Split an SQL script into separate statements delimited by the provided
* separator character. Each individual statement will be added to the
* provided {@code List}.
* <p>Within the script, {@value #DEFAULT_COMMENT_PREFIX} will be used as the
* comment prefix; any text beginning with the comment prefix and extending to
* the end of the line will be omitted from the output. Similarly,
* {@value #DEFAULT_BLOCK_COMMENT_START_DELIMITER} and
* {@value #DEFAULT_BLOCK_COMMENT_END_DELIMITER} will be used as the
* <em>start</em> and <em>end</em> block comment delimiters: any text enclosed
* in a block comment will be omitted from the output. In addition, multiple
* adjacent whitespace characters will be collapsed into a single space.
* @param script the SQL script
* @param separator character separating each statement (typically a ';')
* @param statements the list that will contain the individual statements
* @throws ScriptException if an error occurred while splitting the SQL script
* @see #splitSqlScript(String, String, List)
* @see #splitSqlScript(EncodedResource, String, String, String, String, String, List)
*/
public static void splitSqlScript(String script, char separator, List<String> statements) throws ScriptException {
splitSqlScript(script, String.valueOf(separator), statements);
}
/**
* Split an SQL script into separate statements delimited by the provided
* separator string. Each individual statement will be added to the
* provided {@code List}.
* <p>Within the script, {@value #DEFAULT_COMMENT_PREFIX} will be used as the
* comment prefix; any text beginning with the comment prefix and extending to
* the end of the line will be omitted from the output. Similarly,
* {@value #DEFAULT_BLOCK_COMMENT_START_DELIMITER} and
* {@value #DEFAULT_BLOCK_COMMENT_END_DELIMITER} will be used as the
* <em>start</em> and <em>end</em> block comment delimiters: any text enclosed
* in a block comment will be omitted from the output. In addition, multiple
* adjacent whitespace characters will be collapsed into a single space.
* @param script the SQL script
* @param separator text separating each statement
* (typically a ';' or newline character)
* @param statements the list that will contain the individual statements
* @throws ScriptException if an error occurred while splitting the SQL script
* @see #splitSqlScript(String, char, List)
* @see #splitSqlScript(EncodedResource, String, String, String, String, String, List)
*/
public static void splitSqlScript(String script, String separator, List<String> statements) throws ScriptException {
splitSqlScript(null, script, separator, DEFAULT_COMMENT_PREFIX, DEFAULT_BLOCK_COMMENT_START_DELIMITER,
DEFAULT_BLOCK_COMMENT_END_DELIMITER, statements);
}
/**
* Split an SQL script into separate statements delimited by the provided
* separator string. Each individual statement will be added to the provided
* {@code List}.
* <p>Within the script, the provided {@code commentPrefix} will be honored:
* any text beginning with the comment prefix and extending to the end of the
* line will be omitted from the output. Similarly, the provided
* {@code blockCommentStartDelimiter} and {@code blockCommentEndDelimiter}
* delimiters will be honored: any text enclosed in a block comment will be
* omitted from the output. In addition, multiple adjacent whitespace characters
* will be collapsed into a single space.
* @param resource the resource from which the script was read
* @param script the SQL script
* @param separator text separating each statement
* (typically a ';' or newline character)
* @param commentPrefix the prefix that identifies SQL line comments
* (typically "--")
* @param blockCommentStartDelimiter the <em>start</em> block comment delimiter;
* never {@code null} or empty
* @param blockCommentEndDelimiter the <em>end</em> block comment delimiter;
* never {@code null} or empty
* @param statements the list that will contain the individual statements
* @throws ScriptException if an error occurred while splitting the SQL script
*/
public static void splitSqlScript(@Nullable EncodedResource resource, String script,
String separator, String commentPrefix, String blockCommentStartDelimiter,
String blockCommentEndDelimiter, List<String> statements) throws ScriptException {
Assert.hasText(commentPrefix, "'commentPrefix' must not be null or empty");
splitSqlScript(resource, script, separator, new String[] { commentPrefix },
blockCommentStartDelimiter, blockCommentEndDelimiter, statements);
}
/**
* Split an SQL script into separate statements delimited by the provided
* separator string. Each individual statement will be added to the provided
* {@code List}.
* <p>Within the script, the provided {@code commentPrefixes} will be honored:
* any text beginning with one of the comment prefixes and extending to the
* end of the line will be omitted from the output. Similarly, the provided
* {@code blockCommentStartDelimiter} and {@code blockCommentEndDelimiter}
* delimiters will be honored: any text enclosed in a block comment will be
* omitted from the output. In addition, multiple adjacent whitespace characters
* will be collapsed into a single space.
* @param resource the resource from which the script was read
* @param script the SQL script
* @param separator text separating each statement
* (typically a ';' or newline character)
* @param commentPrefixes the prefixes that identify SQL line comments
* (typically "--")
* @param blockCommentStartDelimiter the <em>start</em> block comment delimiter;
* never {@code null} or empty
* @param blockCommentEndDelimiter the <em>end</em> block comment delimiter;
* never {@code null} or empty
* @param statements the list that will contain the individual statements
* @throws ScriptException if an error occurred while splitting the SQL script
* @since 5.2
*/
public static void splitSqlScript(@Nullable EncodedResource resource, String script,
String separator, String[] commentPrefixes, String blockCommentStartDelimiter,
String blockCommentEndDelimiter) throws ScriptException {
String blockCommentEndDelimiter, List<String> statements) throws ScriptException {
Assert.hasText(script, "'script' must not be null or empty");
Assert.notNull(separator, "'separator' must not be null");
Assert.notEmpty(commentPrefixes, "'commentPrefixes' must not be null or empty");
for (String commentPrefix : commentPrefixes) {
Assert.hasText(commentPrefix, "'commentPrefixes' must not contain null or empty elements");
}
Assert.hasText(blockCommentStartDelimiter, "'blockCommentStartDelimiter' must not be null or empty");
Assert.hasText(blockCommentEndDelimiter, "'blockCommentEndDelimiter' must not be null or empty");
StringBuilder sb = new StringBuilder();
boolean inSingleQuote = false;
boolean inDoubleQuote = false;
boolean inEscape = false;
@ -453,11 +630,13 @@ public abstract class ScriptUtils { @@ -453,11 +630,13 @@ public abstract class ScriptUtils {
char c = script.charAt(i);
if (inEscape) {
inEscape = false;
sb.append(c);
continue;
}
// MySQL style escapes
if (c == '\\') {
inEscape = true;
sb.append(c);
continue;
}
if (!inDoubleQuote && (c == '\'')) {
@ -468,7 +647,13 @@ public abstract class ScriptUtils { @@ -468,7 +647,13 @@ public abstract class ScriptUtils {
}
if (!inSingleQuote && !inDoubleQuote) {
if (script.startsWith(separator, i)) {
return true;
// We've reached the end of the current statement
if (sb.length() > 0) {
statements.add(sb.toString());
sb = new StringBuilder();
}
i += separator.length() - 1;
continue;
}
else if (startsWithAny(script, commentPrefixes, i)) {
// Skip over any content from the start of the comment to the EOL
@ -494,215 +679,31 @@ public abstract class ScriptUtils { @@ -494,215 +679,31 @@ public abstract class ScriptUtils {
"Missing block comment end delimiter: " + blockCommentEndDelimiter, resource);
}
}
}
}
return false;
}
/**
* Execute the given SQL script using default settings for statement
* separators, comment delimiters, and exception handling flags.
* <p>Statement separators and comments will be removed before executing
* individual statements within the supplied script.
* <p><strong>Warning</strong>: this method does <em>not</em> release the
* provided {@link Connection}.
* @param connection the JDBC connection to use to execute the script; already
* configured and ready to use
* @param resource the resource to load the SQL script from; encoded with the
* current platform's default encoding
* @throws ScriptException if an error occurred while executing the SQL script
* @see #executeSqlScript(Connection, EncodedResource, boolean, boolean, String, String, String, String)
* @see #DEFAULT_STATEMENT_SEPARATOR
* @see #DEFAULT_COMMENT_PREFIX
* @see #DEFAULT_BLOCK_COMMENT_START_DELIMITER
* @see #DEFAULT_BLOCK_COMMENT_END_DELIMITER
* @see org.springframework.jdbc.datasource.DataSourceUtils#getConnection
* @see org.springframework.jdbc.datasource.DataSourceUtils#releaseConnection
*/
public static void executeSqlScript(Connection connection, Resource resource) throws ScriptException {
executeSqlScript(connection, new EncodedResource(resource));
}
/**
* Execute the given SQL script using default settings for statement
* separators, comment delimiters, and exception handling flags.
* <p>Statement separators and comments will be removed before executing
* individual statements within the supplied script.
* <p><strong>Warning</strong>: this method does <em>not</em> release the
* provided {@link Connection}.
* @param connection the JDBC connection to use to execute the script; already
* configured and ready to use
* @param resource the resource (potentially associated with a specific encoding)
* to load the SQL script from
* @throws ScriptException if an error occurred while executing the SQL script
* @see #executeSqlScript(Connection, EncodedResource, boolean, boolean, String, String, String, String)
* @see #DEFAULT_STATEMENT_SEPARATOR
* @see #DEFAULT_COMMENT_PREFIX
* @see #DEFAULT_BLOCK_COMMENT_START_DELIMITER
* @see #DEFAULT_BLOCK_COMMENT_END_DELIMITER
* @see org.springframework.jdbc.datasource.DataSourceUtils#getConnection
* @see org.springframework.jdbc.datasource.DataSourceUtils#releaseConnection
*/
public static void executeSqlScript(Connection connection, EncodedResource resource) throws ScriptException {
executeSqlScript(connection, resource, false, false, DEFAULT_COMMENT_PREFIX, DEFAULT_STATEMENT_SEPARATOR,
DEFAULT_BLOCK_COMMENT_START_DELIMITER, DEFAULT_BLOCK_COMMENT_END_DELIMITER);
}
/**
* Execute the given SQL script.
* <p>Statement separators and comments will be removed before executing
* individual statements within the supplied script.
* <p><strong>Warning</strong>: this method does <em>not</em> release the
* provided {@link Connection}.
* @param connection the JDBC connection to use to execute the script; already
* configured and ready to use
* @param resource the resource (potentially associated with a specific encoding)
* to load the SQL script from
* @param continueOnError whether or not to continue without throwing an exception
* in the event of an error
* @param ignoreFailedDrops whether or not to continue in the event of specifically
* an error on a {@code DROP} statement
* @param commentPrefix the prefix that identifies single-line comments in the
* SQL script (typically "--")
* @param separator the script statement separator; defaults to
* {@value #DEFAULT_STATEMENT_SEPARATOR} if not specified and falls back to
* {@value #FALLBACK_STATEMENT_SEPARATOR} as a last resort; may be set to
* {@value #EOF_STATEMENT_SEPARATOR} to signal that the script contains a
* single statement without a separator
* @param blockCommentStartDelimiter the <em>start</em> block comment delimiter
* @param blockCommentEndDelimiter the <em>end</em> block comment delimiter
* @throws ScriptException if an error occurred while executing the SQL script
* @see #DEFAULT_STATEMENT_SEPARATOR
* @see #FALLBACK_STATEMENT_SEPARATOR
* @see #EOF_STATEMENT_SEPARATOR
* @see org.springframework.jdbc.datasource.DataSourceUtils#getConnection
* @see org.springframework.jdbc.datasource.DataSourceUtils#releaseConnection
*/
public static void executeSqlScript(Connection connection, EncodedResource resource, boolean continueOnError,
boolean ignoreFailedDrops, String commentPrefix, @Nullable String separator,
String blockCommentStartDelimiter, String blockCommentEndDelimiter) throws ScriptException {
executeSqlScript(connection, resource, continueOnError, ignoreFailedDrops,
new String[] { commentPrefix }, separator, blockCommentStartDelimiter,
blockCommentEndDelimiter);
}
/**
* Execute the given SQL script.
* <p>Statement separators and comments will be removed before executing
* individual statements within the supplied script.
* <p><strong>Warning</strong>: this method does <em>not</em> release the
* provided {@link Connection}.
* @param connection the JDBC connection to use to execute the script; already
* configured and ready to use
* @param resource the resource (potentially associated with a specific encoding)
* to load the SQL script from
* @param continueOnError whether or not to continue without throwing an exception
* in the event of an error
* @param ignoreFailedDrops whether or not to continue in the event of specifically
* an error on a {@code DROP} statement
* @param commentPrefixes the prefixes that identify single-line comments in the
* SQL script (typically "--")
* @param separator the script statement separator; defaults to
* {@value #DEFAULT_STATEMENT_SEPARATOR} if not specified and falls back to
* {@value #FALLBACK_STATEMENT_SEPARATOR} as a last resort; may be set to
* {@value #EOF_STATEMENT_SEPARATOR} to signal that the script contains a
* single statement without a separator
* @param blockCommentStartDelimiter the <em>start</em> block comment delimiter
* @param blockCommentEndDelimiter the <em>end</em> block comment delimiter
* @throws ScriptException if an error occurred while executing the SQL script
* @since 5.2
* @see #DEFAULT_STATEMENT_SEPARATOR
* @see #FALLBACK_STATEMENT_SEPARATOR
* @see #EOF_STATEMENT_SEPARATOR
* @see org.springframework.jdbc.datasource.DataSourceUtils#getConnection
* @see org.springframework.jdbc.datasource.DataSourceUtils#releaseConnection
*/
public static void executeSqlScript(Connection connection, EncodedResource resource, boolean continueOnError,
boolean ignoreFailedDrops, String[] commentPrefixes, @Nullable String separator,
String blockCommentStartDelimiter, String blockCommentEndDelimiter) throws ScriptException {
try {
if (logger.isDebugEnabled()) {
logger.debug("Executing SQL script from " + resource);
}
long startTime = System.currentTimeMillis();
String script;
try {
script = readScript(resource, separator, commentPrefixes, blockCommentEndDelimiter);
}
catch (IOException ex) {
throw new CannotReadScriptException(resource, ex);
}
if (separator == null) {
separator = DEFAULT_STATEMENT_SEPARATOR;
}
if (!EOF_STATEMENT_SEPARATOR.equals(separator) &&
!containsStatementSeparator(resource, script, separator, commentPrefixes,
blockCommentStartDelimiter, blockCommentEndDelimiter)) {
separator = FALLBACK_STATEMENT_SEPARATOR;
}
List<String> statements = new ArrayList<>();
splitSqlScript(resource, script, separator, commentPrefixes, blockCommentStartDelimiter,
blockCommentEndDelimiter, statements);
int stmtNumber = 0;
Statement stmt = connection.createStatement();
try {
for (String statement : statements) {
stmtNumber++;
try {
stmt.execute(statement);
int rowsAffected = stmt.getUpdateCount();
if (logger.isDebugEnabled()) {
logger.debug(rowsAffected + " returned as update count for SQL: " + statement);
SQLWarning warningToLog = stmt.getWarnings();
while (warningToLog != null) {
logger.debug("SQLWarning ignored: SQL state '" + warningToLog.getSQLState() +
"', error code '" + warningToLog.getErrorCode() +
"', message [" + warningToLog.getMessage() + "]");
warningToLog = warningToLog.getNextWarning();
}
}
else if (c == ' ' || c == '\r' || c == '\n' || c == '\t') {
// Avoid multiple adjacent whitespace characters
if (sb.length() > 0 && sb.charAt(sb.length() - 1) != ' ') {
c = ' ';
}
catch (SQLException ex) {
boolean dropStatement = StringUtils.startsWithIgnoreCase(statement.trim(), "drop");
if (continueOnError || (dropStatement && ignoreFailedDrops)) {
if (logger.isDebugEnabled()) {
logger.debug(ScriptStatementFailedException.buildErrorMessage(statement, stmtNumber, resource), ex);
}
}
else {
throw new ScriptStatementFailedException(statement, stmtNumber, resource, ex);
}
else {
continue;
}
}
}
finally {
try {
stmt.close();
}
catch (Throwable ex) {
logger.trace("Could not close JDBC Statement", ex);
}
}
sb.append(c);
}
long elapsedTime = System.currentTimeMillis() - startTime;
if (logger.isDebugEnabled()) {
logger.debug("Executed SQL script from " + resource + " in " + elapsedTime + " ms.");
}
if (StringUtils.hasText(sb)) {
statements.add(sb.toString());
}
catch (Exception ex) {
if (ex instanceof ScriptException) {
throw (ScriptException) ex;
}
private static boolean startsWithAny(String script, String[] prefixes, int offset) {
for (String prefix : prefixes) {
if (script.startsWith(prefix, offset)) {
return true;
}
throw new UncategorizedScriptException(
"Failed to execute database script from resource [" + resource + "]", ex);
}
return false;
}
}

533
spring-r2dbc/src/main/java/org/springframework/r2dbc/connection/init/ScriptUtils.java
Unescape View File

@ -43,7 +43,7 @@ import org.springframework.util.Assert; @@ -43,7 +43,7 @@ import org.springframework.util.Assert;
import org.springframework.util.StringUtils;
/**
* Generic utility methods for working with SQL scripts.
* Generic utility methods for working with SQL scripts in conjunction with R2DBC.
*
* <p>Mainly for internal use within the framework.
*
@ -59,6 +59,7 @@ import org.springframework.util.StringUtils; @@ -59,6 +59,7 @@ import org.springframework.util.StringUtils;
* @author Phillip Webb
* @author Mark Paluch
* @since 5.3
* @see org.springframework.jdbc.datasource.init.ScriptUtils
*/
public abstract class ScriptUtils {
@ -105,119 +106,171 @@ public abstract class ScriptUtils { @@ -105,119 +106,171 @@ public abstract class ScriptUtils {
/**
* Split an SQL script into separate statements delimited by the provided
* separator string and return a {@code List} containing each individual
* statement.
* <p>Within the script, the provided {@code commentPrefixes} will be honored:
* any text beginning with one of the comment prefixes and extending to the
* end of the line will be omitted from the output. Similarly, the provided
* {@code blockCommentStartDelimiter} and {@code blockCommentEndDelimiter}
* delimiters will be honored: any text enclosed in a block comment will be
* omitted from the output. In addition, multiple adjacent whitespace characters
* will be collapsed into a single space.
* @param resource the resource from which the script was read
* @param script the SQL script
* @param separator text separating each statement
* (typically a ';' or newline character)
* @param commentPrefixes the prefixes that identify SQL line comments
* (typically "--")
* @param blockCommentStartDelimiter the <em>start</em> block comment delimiter;
* never {@code null} or empty
* @param blockCommentEndDelimiter the <em>end</em> block comment delimiter;
* never {@code null} or empty
* @return a list of statements
* @throws ScriptException if an error occurred while splitting the SQL script
* Execute the given SQL script using default settings for statement
* separators, comment delimiters, and exception handling flags.
* <p>Statement separators and comments will be removed before executing
* individual statements within the supplied script.
* <p><strong>Warning</strong>: this method does <em>not</em> release the
* provided {@link Connection}.
* @param connection the R2DBC connection to use to execute the script; already
* configured and ready to use
* @param resource the resource to load the SQL script from; encoded with the
* current platform's default encoding
* @throws ScriptException if an error occurred while executing the SQL script
* @see #executeSqlScript(Connection, EncodedResource, DataBufferFactory, boolean, boolean, String[], String, String, String)
* @see #DEFAULT_STATEMENT_SEPARATOR
* @see #DEFAULT_COMMENT_PREFIXES
* @see #DEFAULT_BLOCK_COMMENT_START_DELIMITER
* @see #DEFAULT_BLOCK_COMMENT_END_DELIMITER
* @see org.springframework.r2dbc.connection.ConnectionFactoryUtils#getConnection
* @see org.springframework.r2dbc.connection.ConnectionFactoryUtils#releaseConnection
*/
static List<String> splitSqlScript(EncodedResource resource, String script,
String separator, String[] commentPrefixes, String blockCommentStartDelimiter,
public static Mono<Void> executeSqlScript(Connection connection, Resource resource) throws ScriptException {
return executeSqlScript(connection, new EncodedResource(resource));
}
/**
* Execute the given SQL script using default settings for statement
* separators, comment delimiters, and exception handling flags.
* <p>Statement separators and comments will be removed before executing
* individual statements within the supplied script.
* <p><strong>Warning</strong>: this method does <em>not</em> release the
* provided {@link Connection}.
* @param connection the R2DBC connection to use to execute the script; already
* configured and ready to use
* @param resource the resource (potentially associated with a specific encoding)
* to load the SQL script from
* @throws ScriptException if an error occurred while executing the SQL script
* @see #executeSqlScript(Connection, EncodedResource, DataBufferFactory, boolean, boolean, String[], String, String, String)
* @see #DEFAULT_STATEMENT_SEPARATOR
* @see #DEFAULT_COMMENT_PREFIXES
* @see #DEFAULT_BLOCK_COMMENT_START_DELIMITER
* @see #DEFAULT_BLOCK_COMMENT_END_DELIMITER
* @see org.springframework.r2dbc.connection.ConnectionFactoryUtils#getConnection
* @see org.springframework.r2dbc.connection.ConnectionFactoryUtils#releaseConnection
*/
public static Mono<Void> executeSqlScript(Connection connection, EncodedResource resource) throws ScriptException {
return executeSqlScript(connection, resource, DefaultDataBufferFactory.sharedInstance, false, false,
DEFAULT_COMMENT_PREFIXES, DEFAULT_STATEMENT_SEPARATOR, DEFAULT_BLOCK_COMMENT_START_DELIMITER,
DEFAULT_BLOCK_COMMENT_END_DELIMITER);
}
/**
* Execute the given SQL script.
* <p>Statement separators and comments will be removed before executing
* individual statements within the supplied script.
* <p><strong>Warning</strong>: this method does <em>not</em> release the
* provided {@link Connection}.
* @param connection the R2DBC connection to use to execute the script; already
* configured and ready to use
* @param resource the resource (potentially associated with a specific encoding)
* to load the SQL script from
* @param dataBufferFactory the factory to create data buffers with
* @param continueOnError whether or not to continue without throwing an exception
* in the event of an error
* @param ignoreFailedDrops whether or not to continue in the event of specifically
* an error on a {@code DROP} statement
* @param commentPrefix the prefix that identifies single-line comments in the
* SQL script (typically "--")
* @param separator the script statement separator; defaults to
* {@value #DEFAULT_STATEMENT_SEPARATOR} if not specified and falls back to
* {@value #FALLBACK_STATEMENT_SEPARATOR} as a last resort; may be set to
* {@value #EOF_STATEMENT_SEPARATOR} to signal that the script contains a
* single statement without a separator
* @param blockCommentStartDelimiter the <em>start</em> block comment delimiter
* @param blockCommentEndDelimiter the <em>end</em> block comment delimiter
* @throws ScriptException if an error occurred while executing the SQL script
* @see #DEFAULT_STATEMENT_SEPARATOR
* @see #FALLBACK_STATEMENT_SEPARATOR
* @see #EOF_STATEMENT_SEPARATOR
* @see org.springframework.r2dbc.connection.ConnectionFactoryUtils#getConnection
* @see org.springframework.r2dbc.connection.ConnectionFactoryUtils#releaseConnection
*/
public static Mono<Void> executeSqlScript(Connection connection, EncodedResource resource,
DataBufferFactory dataBufferFactory, boolean continueOnError, boolean ignoreFailedDrops,
String commentPrefix, @Nullable String separator, String blockCommentStartDelimiter,
String blockCommentEndDelimiter) throws ScriptException {
Assert.hasText(script, "'script' must not be null or empty");
Assert.notNull(separator, "'separator' must not be null");
Assert.notEmpty(commentPrefixes, "'commentPrefixes' must not be null or empty");
for (String commentPrefix : commentPrefixes) {
Assert.hasText(commentPrefix, "'commentPrefixes' must not contain null or empty elements");
return executeSqlScript(connection, resource, dataBufferFactory, continueOnError,
ignoreFailedDrops, new String[] { commentPrefix }, separator,
blockCommentStartDelimiter, blockCommentEndDelimiter);
}
/**
* Execute the given SQL script.
* <p>Statement separators and comments will be removed before executing
* individual statements within the supplied script.
* <p><strong>Warning</strong>: this method does <em>not</em> release the
* provided {@link Connection}.
* @param connection the R2DBC connection to use to execute the script; already
* configured and ready to use
* @param resource the resource (potentially associated with a specific encoding)
* to load the SQL script from
* @param dataBufferFactory the factory to create data buffers with
* @param continueOnError whether or not to continue without throwing an exception
* in the event of an error
* @param ignoreFailedDrops whether or not to continue in the event of specifically
* an error on a {@code DROP} statement
* @param commentPrefixes the prefixes that identify single-line comments in the
* SQL script (typically "--")
* @param separator the script statement separator; defaults to
* {@value #DEFAULT_STATEMENT_SEPARATOR} if not specified and falls back to
* {@value #FALLBACK_STATEMENT_SEPARATOR} as a last resort; may be set to
* {@value #EOF_STATEMENT_SEPARATOR} to signal that the script contains a
* single statement without a separator
* @param blockCommentStartDelimiter the <em>start</em> block comment delimiter
* @param blockCommentEndDelimiter the <em>end</em> block comment delimiter
* @throws ScriptException if an error occurred while executing the SQL script
* @see #DEFAULT_STATEMENT_SEPARATOR
* @see #FALLBACK_STATEMENT_SEPARATOR
* @see #EOF_STATEMENT_SEPARATOR
* @see org.springframework.r2dbc.connection.ConnectionFactoryUtils#getConnection
* @see org.springframework.r2dbc.connection.ConnectionFactoryUtils#releaseConnection
*/
public static Mono<Void> executeSqlScript(Connection connection, EncodedResource resource,
DataBufferFactory dataBufferFactory, boolean continueOnError, boolean ignoreFailedDrops,
String[] commentPrefixes, @Nullable String separator, String blockCommentStartDelimiter,
String blockCommentEndDelimiter) throws ScriptException {
if (logger.isDebugEnabled()) {
logger.debug("Executing SQL script from " + resource);
}
Assert.hasText(blockCommentStartDelimiter, "'blockCommentStartDelimiter' must not be null or empty");
Assert.hasText(blockCommentEndDelimiter, "'blockCommentEndDelimiter' must not be null or empty");
List<String> statements = new ArrayList<>();
StringBuilder sb = new StringBuilder();
boolean inSingleQuote = false;
boolean inDoubleQuote = false;
boolean inEscape = false;
long startTime = System.currentTimeMillis();
for (int i = 0; i < script.length(); i++) {
char c = script.charAt(i);
if (inEscape) {
inEscape = false;
sb.append(c);
continue;
}
// MySQL style escapes
if (c == '\\') {
inEscape = true;
sb.append(c);
continue;
}
if (!inDoubleQuote && (c == '\'')) {
inSingleQuote = !inSingleQuote;
}
else if (!inSingleQuote && (c == '"')) {
inDoubleQuote = !inDoubleQuote;
Mono<String> inputScript = readScript(resource, dataBufferFactory, separator)
.onErrorMap(IOException.class, ex -> new CannotReadScriptException(resource, ex));
AtomicInteger statementNumber = new AtomicInteger();
Flux<Void> executeScript = inputScript.flatMapIterable(script -> {
String separatorToUse = separator;
if (separatorToUse == null) {
separatorToUse = DEFAULT_STATEMENT_SEPARATOR;
}
if (!inSingleQuote && !inDoubleQuote) {
if (script.startsWith(separator, i)) {
// We've reached the end of the current statement
if (sb.length() > 0) {
statements.add(sb.toString());
sb = new StringBuilder();
}
i += separator.length() - 1;
continue;
}
else if (startsWithAny(script, commentPrefixes, i)) {
// Skip over any content from the start of the comment to the EOL
int indexOfNextNewline = script.indexOf('\n', i);
if (indexOfNextNewline > i) {
i = indexOfNextNewline;
continue;
}
else {
// If there's no EOL, we must be at the end of the script, so stop here.
break;
}
}
else if (script.startsWith(blockCommentStartDelimiter, i)) {
// Skip over any block comments
int indexOfCommentEnd = script.indexOf(blockCommentEndDelimiter, i);
if (indexOfCommentEnd > i) {
i = indexOfCommentEnd + blockCommentEndDelimiter.length() - 1;
continue;
}
else {
throw new ScriptParseException(
"Missing block comment end delimiter: " + blockCommentEndDelimiter, resource);
}
}
else if (c == ' ' || c == '\r' || c == '\n' || c == '\t') {
// Avoid multiple adjacent whitespace characters
if (sb.length() > 0 && sb.charAt(sb.length() - 1) != ' ') {
c = ' ';
}
else {
continue;
}
}
if (!EOF_STATEMENT_SEPARATOR.equals(separatorToUse) &&
!containsStatementSeparator(resource, script, separatorToUse, commentPrefixes,
blockCommentStartDelimiter, blockCommentEndDelimiter)) {
separatorToUse = FALLBACK_STATEMENT_SEPARATOR;
}
sb.append(c);
}
return splitSqlScript(resource, script, separatorToUse, commentPrefixes,
blockCommentStartDelimiter, blockCommentEndDelimiter);
}).concatMap(statement -> {
statementNumber.incrementAndGet();
return runStatement(statement, connection, resource, continueOnError, ignoreFailedDrops, statementNumber);
});
if (StringUtils.hasText(sb)) {
statements.add(sb.toString());
if (logger.isDebugEnabled()) {
executeScript = executeScript.doOnComplete(() -> {
long elapsedTime = System.currentTimeMillis() - startTime;
logger.debug("Executed SQL script from " + resource + " in " + elapsedTime + " ms.");
});
}
return statements;
return executeScript.onErrorMap(ex -> !(ex instanceof ScriptException),
ex -> new UncategorizedScriptException(
"Failed to execute database script from resource [" + resource + "]", ex))
.then();
}
/**
@ -290,15 +343,6 @@ public abstract class ScriptUtils { @@ -290,15 +343,6 @@ public abstract class ScriptUtils {
}
}
private static boolean startsWithAny(String script, String[] prefixes, int offset) {
for (String prefix : prefixes) {
if (script.startsWith(prefix, offset)) {
return true;
}
}
return false;
}
/**
* Determine if the provided SQL script contains the specified statement separator.
* <p>This method is intended to be used to find the string separating each
@ -379,171 +423,128 @@ public abstract class ScriptUtils { @@ -379,171 +423,128 @@ public abstract class ScriptUtils {
}
/**
* Execute the given SQL script using default settings for statement
* separators, comment delimiters, and exception handling flags.
* <p>Statement separators and comments will be removed before executing
* individual statements within the supplied script.
* <p><strong>Warning</strong>: this method does <em>not</em> release the
* provided {@link Connection}.
* @param connection the R2DBC connection to use to execute the script; already
* configured and ready to use
* @param resource the resource to load the SQL script from; encoded with the
* current platform's default encoding
* @throws ScriptException if an error occurred while executing the SQL script
* @see #executeSqlScript(Connection, EncodedResource, DataBufferFactory, boolean, boolean, String[], String, String, String)
* @see #DEFAULT_STATEMENT_SEPARATOR
* @see #DEFAULT_COMMENT_PREFIXES
* @see #DEFAULT_BLOCK_COMMENT_START_DELIMITER
* @see #DEFAULT_BLOCK_COMMENT_END_DELIMITER
* @see org.springframework.r2dbc.connection.ConnectionFactoryUtils#getConnection
* @see org.springframework.r2dbc.connection.ConnectionFactoryUtils#releaseConnection
*/
public static Mono<Void> executeSqlScript(Connection connection, Resource resource) throws ScriptException {
return executeSqlScript(connection, new EncodedResource(resource));
}
/**
* Execute the given SQL script using default settings for statement
* separators, comment delimiters, and exception handling flags.
* <p>Statement separators and comments will be removed before executing
* individual statements within the supplied script.
* <p><strong>Warning</strong>: this method does <em>not</em> release the
* provided {@link Connection}.
* @param connection the R2DBC connection to use to execute the script; already
* configured and ready to use
* @param resource the resource (potentially associated with a specific encoding)
* to load the SQL script from
* @throws ScriptException if an error occurred while executing the SQL script
* @see #executeSqlScript(Connection, EncodedResource, DataBufferFactory, boolean, boolean, String[], String, String, String)
* @see #DEFAULT_STATEMENT_SEPARATOR
* @see #DEFAULT_COMMENT_PREFIXES
* @see #DEFAULT_BLOCK_COMMENT_START_DELIMITER
* @see #DEFAULT_BLOCK_COMMENT_END_DELIMITER
* @see org.springframework.r2dbc.connection.ConnectionFactoryUtils#getConnection
* @see org.springframework.r2dbc.connection.ConnectionFactoryUtils#releaseConnection
*/
public static Mono<Void> executeSqlScript(Connection connection, EncodedResource resource) throws ScriptException {
return executeSqlScript(connection, resource, DefaultDataBufferFactory.sharedInstance, false, false,
DEFAULT_COMMENT_PREFIXES, DEFAULT_STATEMENT_SEPARATOR, DEFAULT_BLOCK_COMMENT_START_DELIMITER,
DEFAULT_BLOCK_COMMENT_END_DELIMITER);
}
/**
* Execute the given SQL script.
* <p>Statement separators and comments will be removed before executing
* individual statements within the supplied script.
* <p><strong>Warning</strong>: this method does <em>not</em> release the
* provided {@link Connection}.
* @param connection the R2DBC connection to use to execute the script; already
* configured and ready to use
* @param resource the resource (potentially associated with a specific encoding)
* to load the SQL script from
* @param dataBufferFactory the factory to create data buffers with
* @param continueOnError whether or not to continue without throwing an exception
* in the event of an error
* @param ignoreFailedDrops whether or not to continue in the event of specifically
* an error on a {@code DROP} statement
* @param commentPrefix the prefix that identifies single-line comments in the
* SQL script (typically "--")
* @param separator the script statement separator; defaults to
* {@value #DEFAULT_STATEMENT_SEPARATOR} if not specified and falls back to
* {@value #FALLBACK_STATEMENT_SEPARATOR} as a last resort; may be set to
* {@value #EOF_STATEMENT_SEPARATOR} to signal that the script contains a
* single statement without a separator
* @param blockCommentStartDelimiter the <em>start</em> block comment delimiter
* @param blockCommentEndDelimiter the <em>end</em> block comment delimiter
* @throws ScriptException if an error occurred while executing the SQL script
* @see #DEFAULT_STATEMENT_SEPARATOR
* @see #FALLBACK_STATEMENT_SEPARATOR
* @see #EOF_STATEMENT_SEPARATOR
* @see org.springframework.r2dbc.connection.ConnectionFactoryUtils#getConnection
* @see org.springframework.r2dbc.connection.ConnectionFactoryUtils#releaseConnection
*/
public static Mono<Void> executeSqlScript(Connection connection, EncodedResource resource,
DataBufferFactory dataBufferFactory, boolean continueOnError, boolean ignoreFailedDrops,
String commentPrefix, @Nullable String separator, String blockCommentStartDelimiter,
String blockCommentEndDelimiter) throws ScriptException {
return executeSqlScript(connection, resource, dataBufferFactory, continueOnError,
ignoreFailedDrops, new String[] { commentPrefix }, separator,
blockCommentStartDelimiter, blockCommentEndDelimiter);
}
/**
* Execute the given SQL script.
* <p>Statement separators and comments will be removed before executing
* individual statements within the supplied script.
* <p><strong>Warning</strong>: this method does <em>not</em> release the
* provided {@link Connection}.
* @param connection the R2DBC connection to use to execute the script; already
* configured and ready to use
* @param resource the resource (potentially associated with a specific encoding)
* to load the SQL script from
* @param dataBufferFactory the factory to create data buffers with
* @param continueOnError whether or not to continue without throwing an exception
* in the event of an error
* @param ignoreFailedDrops whether or not to continue in the event of specifically
* an error on a {@code DROP} statement
* @param commentPrefixes the prefixes that identify single-line comments in the
* SQL script (typically "--")
* @param separator the script statement separator; defaults to
* {@value #DEFAULT_STATEMENT_SEPARATOR} if not specified and falls back to
* {@value #FALLBACK_STATEMENT_SEPARATOR} as a last resort; may be set to
* {@value #EOF_STATEMENT_SEPARATOR} to signal that the script contains a
* single statement without a separator
* @param blockCommentStartDelimiter the <em>start</em> block comment delimiter
* @param blockCommentEndDelimiter the <em>end</em> block comment delimiter
* @throws ScriptException if an error occurred while executing the SQL script
* @see #DEFAULT_STATEMENT_SEPARATOR
* @see #FALLBACK_STATEMENT_SEPARATOR
* @see #EOF_STATEMENT_SEPARATOR
* @see org.springframework.r2dbc.connection.ConnectionFactoryUtils#getConnection
* @see org.springframework.r2dbc.connection.ConnectionFactoryUtils#releaseConnection
* Split an SQL script into separate statements delimited by the provided
* separator string and return a {@code List} containing each individual
* statement.
* <p>Within the script, the provided {@code commentPrefixes} will be honored:
* any text beginning with one of the comment prefixes and extending to the
* end of the line will be omitted from the output. Similarly, the provided
* {@code blockCommentStartDelimiter} and {@code blockCommentEndDelimiter}
* delimiters will be honored: any text enclosed in a block comment will be
* omitted from the output. In addition, multiple adjacent whitespace characters
* will be collapsed into a single space.
* @param resource the resource from which the script was read
* @param script the SQL script
* @param separator text separating each statement
* (typically a ';' or newline character)
* @param commentPrefixes the prefixes that identify SQL line comments
* (typically "--")
* @param blockCommentStartDelimiter the <em>start</em> block comment delimiter;
* never {@code null} or empty
* @param blockCommentEndDelimiter the <em>end</em> block comment delimiter;
* never {@code null} or empty
* @return a list of statements
* @throws ScriptException if an error occurred while splitting the SQL script
*/
public static Mono<Void> executeSqlScript(Connection connection, EncodedResource resource,
DataBufferFactory dataBufferFactory, boolean continueOnError, boolean ignoreFailedDrops,
String[] commentPrefixes, @Nullable String separator, String blockCommentStartDelimiter,
static List<String> splitSqlScript(EncodedResource resource, String script,
String separator, String[] commentPrefixes, String blockCommentStartDelimiter,
String blockCommentEndDelimiter) throws ScriptException {
if (logger.isDebugEnabled()) {
logger.debug("Executing SQL script from " + resource);
Assert.hasText(script, "'script' must not be null or empty");
Assert.notNull(separator, "'separator' must not be null");
Assert.notEmpty(commentPrefixes, "'commentPrefixes' must not be null or empty");
for (String commentPrefix : commentPrefixes) {
Assert.hasText(commentPrefix, "'commentPrefixes' must not contain null or empty elements");
}
Assert.hasText(blockCommentStartDelimiter, "'blockCommentStartDelimiter' must not be null or empty");
Assert.hasText(blockCommentEndDelimiter, "'blockCommentEndDelimiter' must not be null or empty");
long startTime = System.currentTimeMillis();
Mono<String> inputScript = readScript(resource, dataBufferFactory, separator)
.onErrorMap(IOException.class, ex -> new CannotReadScriptException(resource, ex));
AtomicInteger statementNumber = new AtomicInteger();
List<String> statements = new ArrayList<>();
StringBuilder sb = new StringBuilder();
boolean inSingleQuote = false;
boolean inDoubleQuote = false;
boolean inEscape = false;
Flux<Void> executeScript = inputScript.flatMapIterable(script -> {
String separatorToUse = separator;
if (separatorToUse == null) {
separatorToUse = DEFAULT_STATEMENT_SEPARATOR;
for (int i = 0; i < script.length(); i++) {
char c = script.charAt(i);
if (inEscape) {
inEscape = false;
sb.append(c);
continue;
}
if (!EOF_STATEMENT_SEPARATOR.equals(separatorToUse) &&
!containsStatementSeparator(resource, script, separatorToUse, commentPrefixes,
blockCommentStartDelimiter, blockCommentEndDelimiter)) {
separatorToUse = FALLBACK_STATEMENT_SEPARATOR;
// MySQL style escapes
if (c == '\\') {
inEscape = true;
sb.append(c);
continue;
}
return splitSqlScript(resource, script, separatorToUse, commentPrefixes,
blockCommentStartDelimiter, blockCommentEndDelimiter);
}).concatMap(statement -> {
statementNumber.incrementAndGet();
return runStatement(statement, connection, resource, continueOnError, ignoreFailedDrops, statementNumber);
});
if (!inDoubleQuote && (c == '\'')) {
inSingleQuote = !inSingleQuote;
}
else if (!inSingleQuote && (c == '"')) {
inDoubleQuote = !inDoubleQuote;
}
if (!inSingleQuote && !inDoubleQuote) {
if (script.startsWith(separator, i)) {
// We've reached the end of the current statement
if (sb.length() > 0) {
statements.add(sb.toString());
sb = new StringBuilder();
}
i += separator.length() - 1;
continue;
}
else if (startsWithAny(script, commentPrefixes, i)) {
// Skip over any content from the start of the comment to the EOL
int indexOfNextNewline = script.indexOf('\n', i);
if (indexOfNextNewline > i) {
i = indexOfNextNewline;
continue;
}
else {
// If there's no EOL, we must be at the end of the script, so stop here.
break;
}
}
else if (script.startsWith(blockCommentStartDelimiter, i)) {
// Skip over any block comments
int indexOfCommentEnd = script.indexOf(blockCommentEndDelimiter, i);
if (indexOfCommentEnd > i) {
i = indexOfCommentEnd + blockCommentEndDelimiter.length() - 1;
continue;
}
else {
throw new ScriptParseException(
"Missing block comment end delimiter: " + blockCommentEndDelimiter, resource);
}
}
else if (c == ' ' || c == '\r' || c == '\n' || c == '\t') {
// Avoid multiple adjacent whitespace characters
if (sb.length() > 0 && sb.charAt(sb.length() - 1) != ' ') {
c = ' ';
}
else {
continue;
}
}
}
sb.append(c);
}
if (logger.isDebugEnabled()) {
executeScript = executeScript.doOnComplete(() -> {
long elapsedTime = System.currentTimeMillis() - startTime;
logger.debug("Executed SQL script from " + resource + " in " + elapsedTime + " ms.");
});
if (StringUtils.hasText(sb)) {
statements.add(sb.toString());
}
return executeScript.onErrorMap(ex -> !(ex instanceof ScriptException),
ex -> new UncategorizedScriptException(
"Failed to execute database script from resource [" + resource + "]", ex))
.then();
return statements;
}
private static boolean startsWithAny(String script, String[] prefixes, int offset) {
for (String prefix : prefixes) {
if (script.startsWith(prefix, offset)) {
return true;
}
}
return false;
}
private static Publisher<? extends Void> runStatement(String statement, Connection connection,

Write Preview
Loading…
Cancel
Save