Indexed objects (arrays/maps/lists) now settable

git-svn-id: https://src.springframework.org/svn/spring-framework/trunk@878 50f2f4bb-b051-0410-bef5-90022cba6387

org.springframework.expression/src/test/java/org/springframework/expression/spel/SetValueTests.java

@@ -16,15 +16,19 @@
 
 package org.springframework.expression.spel;
 
+import java.util.ArrayList;
+
 import org.springframework.expression.EvaluationException;
 import org.springframework.expression.Expression;
 import org.springframework.expression.ParseException;
 import org.springframework.expression.spel.support.StandardEvaluationContext;
+import org.springframework.expression.spel.testresources.PlaceOfBirth;
 
 /**
  * Tests set value expressions.
  * 
  * @author Keith Donald
+ * @author Andy Clement
  */
 public class SetValueTests extends ExpressionTestCase {
 
@@ -33,35 +37,96 @@ public class SetValueTests extends ExpressionTestCase {
 	public void testSetProperty() {
 		setValue("wonNobelPrize", true);
 	}
-
+	
 	public void testSetNestedProperty() {
 		setValue("placeOfBirth.city", "Wien");
 	}
 
-	//public void testSetPropertyTypeCoersion() {
-	//	setValue("wonNobelPrize", "true");
-	//}
+	public void testSetArrayElementValue() {
+		setValue("inventions[0]", "Just the telephone");
+	}
 	
-	//public void testSetArrayElementValue() {
-	//	setValue("inventions[0]", "Just the telephone");
-	//}
+	public void testSetArrayElementValueAllPrimitiveTypes() {
+		setValue("arrayContainer.ints[1]", 3);
+		setValue("arrayContainer.floats[1]", 3.0f);
+		setValue("arrayContainer.booleans[1]", false);
+		setValue("arrayContainer.doubles[1]", 3.4d);
+		setValue("arrayContainer.shorts[1]", (short)3);
+		setValue("arrayContainer.longs[1]", 3L);
+		setValue("arrayContainer.bytes[1]", (byte) 3);
+		setValue("arrayContainer.chars[1]", (char) 3);
+	}
+
+	public void testSetArrayElementValueAllPrimitiveTypesErrors() {
+		// none of these sets are possible due to (expected) conversion problems
+		setValueExpectError("arrayContainer.ints[1]", "wibble");
+		setValueExpectError("arrayContainer.floats[1]", "dribble");
+		setValueExpectError("arrayContainer.booleans[1]", "nein");
+		setValueExpectError("arrayContainer.doubles[1]", new ArrayList<String>());
+		setValueExpectError("arrayContainer.shorts[1]", new ArrayList<String>());
+		setValueExpectError("arrayContainer.longs[1]", new ArrayList<String>());
+		setValueExpectError("arrayContainer.bytes[1]", "NaB");
+		setValueExpectError("arrayContainer.chars[1]", "NaC");
+	}
 	
 	public void testSetArrayElementNestedValue() {
 		setValue("placesLived[0].city", "Wien");
 	}
 	
-	//public void testSetListElementValue() {
-	//	setValue("placesLivedList[0]", new PlaceOfBirth("Wien"));
-	//}
+	public void testSetListElementValue() {
+		setValue("placesLivedList[0]", new PlaceOfBirth("Wien"));
+	}
 	
-	//public void testSetGenericListElementValueTypeCoersion() {
-	//	setValue("placesLivedList[0]", "Wien");
-	//}
+	public void testSetGenericListElementValueTypeCoersion() {
+		setValue("placesLivedList[0]", "Wien");
+	}
 
 	public void testSetListElementNestedValue() {
 		setValue("placesLived[0].city", "Wien");
 	}
 
+	public void testSetArrayElementInvalidIndex() {
+		setValueExpectError("placesLived[23]", "Wien");
+		setValueExpectError("placesLivedList[23]", "Wien");
+	}
+	
+	public void testSetMapElements() {
+		setValue("testMap['montag']","lundi");
+	}
+	
+	public void testIndexingIntoUnsupportedType() {
+		setValueExpectError("'hello'[3]", 'p');
+	}
+	
+//	public void testSetPropertyTypeCoersion() {
+//		setValue("publicBoolean", "true");
+//	}
+
+
+	/**
+	 * Call setValue() but expect it to fail.
+	 */
+	protected void setValueExpectError(String expression, Object value) {
+		try {
+			Expression e = parser.parseExpression(expression);
+			if (e == null) {
+				fail("Parser returned null for expression");
+			}
+			if (DEBUG) {
+				SpelUtilities.printAbstractSyntaxTree(System.out, e);
+			}
+			StandardEvaluationContext lContext = TestScenarioCreator.getTestEvaluationContext();
+//			assertTrue("Expression is not writeable but should be", e.isWritable(lContext));
+			e.setValue(lContext, value);
+			fail("expected an error");
+		} catch (ParseException pe) {
+			pe.printStackTrace();
+			fail("Unexpected Exception: " + pe.getMessage());
+		} catch (EvaluationException ee) {
+			// success!
+		}
+	}
+
 	protected void setValue(String expression, Object value) {
 		try {
 			Expression e = parser.parseExpression(expression);

org.springframework.expression/src/test/java/org/springframework/expression/spel/testresources/ArrayContainer.java

@@ -0,0 +1,32 @@
+/**
+ * 
+ */
+package org.springframework.expression.spel.testresources;
+
+/**
+ * Hold the various kinds of primitive array for access through the test evaluation context.
+ * 
+ * @author Andy Clement
+ */
+public class ArrayContainer {
+	public int[] ints = new int[3];
+	public long[] longs = new long[3];
+	public double[] doubles = new double[3];
+	public byte[] bytes = new byte[3];
+	public char[] chars = new char[3];
+	public short[] shorts = new short[3];
+	public boolean[] booleans = new boolean[3];
+	public float[] floats = new float[3];
+	
+	public ArrayContainer() {
+		// setup some values
+		ints[0] = 42;
+		longs[0] = 42L;
+		doubles[0] = 42.0d;
+		bytes[0] = 42;
+		chars[0] = 42;
+		shorts[0] = 42;
+		booleans[0] = true;
+		floats[0] = 42.0f;
+	}
+}

org.springframework.expression/src/test/java/org/springframework/expression/spel/testresources/Inventor.java

@@ -15,16 +15,19 @@ public class Inventor {
 	private String nationality;
 	private String[] inventions;
 	public String randomField;
-	public Map testMap;
+	public Map<String,String> testMap;
 	private boolean wonNobelPrize;
 	private PlaceOfBirth[] placesLived;
 	private List<PlaceOfBirth> placesLivedList = new ArrayList<PlaceOfBirth>();
+	public ArrayContainer arrayContainer;
+	public boolean publicBoolean;
 	
 	public Inventor(String name, Date birthdate, String nationality) {
 		this.name = name;
 		this.birthdate = birthdate;
 		this.nationality = nationality;
-		testMap = new HashMap();
+		this.arrayContainer = new ArrayContainer();
+		testMap = new HashMap<String,String>();
 		testMap.put("monday", "montag");
 		testMap.put("tuesday", "dienstag");
 		testMap.put("wednesday", "mittwoch");