Polishing

spring-context-support/src/main/java/org/springframework/cache/jcache/JCacheCache.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2018 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,6 +17,7 @@
 package org.springframework.cache.jcache;
 
 import java.util.concurrent.Callable;
+import javax.cache.Cache;
 import javax.cache.processor.EntryProcessor;
 import javax.cache.processor.EntryProcessorException;
 import javax.cache.processor.MutableEntry;
@@ -36,14 +37,14 @@ import org.springframework.util.Assert;
  */
 public class JCacheCache extends AbstractValueAdaptingCache {
 
-	private final javax.cache.Cache<Object, Object> cache;
+	private final Cache<Object, Object> cache;
 
 
 	/**
 	 * Create an {@link org.springframework.cache.jcache.JCacheCache} instance.
 	 * @param jcache backing JCache Cache instance
 	 */
-	public JCacheCache(javax.cache.Cache<Object, Object> jcache) {
+	public JCacheCache(Cache<Object, Object> jcache) {
 		this(jcache, true);
 	}
 
@@ -52,7 +53,7 @@ public class JCacheCache extends AbstractValueAdaptingCache {
 	 * @param jcache backing JCache Cache instance
 	 * @param allowNullValues whether to accept and convert null values for this cache
 	 */
-	public JCacheCache(javax.cache.Cache<Object, Object> jcache, boolean allowNullValues) {
+	public JCacheCache(Cache<Object, Object> jcache, boolean allowNullValues) {
 		super(allowNullValues);
 		Assert.notNull(jcache, "Cache must not be null");
 		this.cache = jcache;
@@ -65,7 +66,7 @@ public class JCacheCache extends AbstractValueAdaptingCache {
 	}
 
 	@Override
-	public final javax.cache.Cache<Object, Object> getNativeCache() {
+	public final Cache<Object, Object> getNativeCache() {
 		return this.cache;
 	}
 

spring-context-support/src/main/java/org/springframework/cache/jcache/JCacheCacheManager.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2014 the original author or authors.
+ * Copyright 2002-2017 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -36,7 +36,7 @@ import org.springframework.cache.transaction.AbstractTransactionSupportingCacheM
  */
 public class JCacheCacheManager extends AbstractTransactionSupportingCacheManager {
 
-	private javax.cache.CacheManager cacheManager;
+	private CacheManager cacheManager;
 
 	private boolean allowNullValues = true;
 
@@ -60,14 +60,14 @@ public class JCacheCacheManager extends AbstractTransactionSupportingCacheManage
 	/**
 	 * Set the backing JCache {@link javax.cache.CacheManager}.
 	 */
-	public void setCacheManager(javax.cache.CacheManager cacheManager) {
+	public void setCacheManager(CacheManager cacheManager) {
 		this.cacheManager = cacheManager;
 	}
 
 	/**
 	 * Return the backing JCache {@link javax.cache.CacheManager}.
 	 */
-	public javax.cache.CacheManager getCacheManager() {
+	public CacheManager getCacheManager() {
 		return this.cacheManager;
 	}
 

spring-context/src/main/java/org/springframework/cache/annotation/SpringCacheAnnotationParser.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2018 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -58,7 +58,7 @@ public class SpringCacheAnnotationParser implements CacheAnnotationParser, Seria
 		return parseCacheAnnotations(defaultConfig, method);
 	}
 
-	protected Collection<CacheOperation> parseCacheAnnotations(DefaultCacheConfig cachingConfig, AnnotatedElement ae) {
+	private Collection<CacheOperation> parseCacheAnnotations(DefaultCacheConfig cachingConfig, AnnotatedElement ae) {
 		Collection<CacheOperation> ops = null;
 
 		Collection<Cacheable> cacheables = AnnotatedElementUtils.getAllMergedAnnotations(ae, Cacheable.class);
@@ -68,6 +68,7 @@ public class SpringCacheAnnotationParser implements CacheAnnotationParser, Seria
 				ops.add(parseCacheableAnnotation(ae, cachingConfig, cacheable));
 			}
 		}
+
 		Collection<CacheEvict> evicts = AnnotatedElementUtils.getAllMergedAnnotations(ae, CacheEvict.class);
 		if (!evicts.isEmpty()) {
 			ops = lazyInit(ops);
@@ -75,6 +76,7 @@ public class SpringCacheAnnotationParser implements CacheAnnotationParser, Seria
 				ops.add(parseEvictAnnotation(ae, cachingConfig, evict));
 			}
 		}
+
 		Collection<CachePut> puts = AnnotatedElementUtils.getAllMergedAnnotations(ae, CachePut.class);
 		if (!puts.isEmpty()) {
 			ops = lazyInit(ops);
@@ -82,6 +84,7 @@ public class SpringCacheAnnotationParser implements CacheAnnotationParser, Seria
 				ops.add(parsePutAnnotation(ae, cachingConfig, put));
 			}
 		}
+
 		Collection<Caching> cachings = AnnotatedElementUtils.getAllMergedAnnotations(ae, Caching.class);
 		if (!cachings.isEmpty()) {
 			ops = lazyInit(ops);
@@ -283,7 +286,6 @@ public class SpringCacheAnnotationParser implements CacheAnnotationParser, Seria
 				builder.setCacheManager(this.cacheManager);
 			}
 		}
-
 	}
 
 }

spring-core/src/main/java/org/springframework/util/xml/AbstractStaxXMLReader.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2016 the original author or authors.
+ * Copyright 2002-2018 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -145,7 +145,7 @@ abstract class AbstractStaxXMLReader extends AbstractXMLReader {
 	 * Parse the StAX XML reader passed at construction-time.
 	 * <p><b>NOTE:</b>: The given system identifier is not read, but ignored.
 	 * @param ignored is ignored
-	 * @throws SAXException A SAX exception, possibly wrapping a {@code XMLStreamException}
+	 * @throws SAXException a SAX exception, possibly wrapping a {@code XMLStreamException}
 	 */
 	@Override
 	public final void parse(String ignored) throws SAXException {
@@ -182,13 +182,10 @@ abstract class AbstractStaxXMLReader extends AbstractXMLReader {
 	 * @see org.xml.sax.ContentHandler#startPrefixMapping(String, String)
 	 */
 	protected void startPrefixMapping(String prefix, String namespace) throws SAXException {
-		if (getContentHandler() != null) {
+		if (getContentHandler() != null && StringUtils.hasLength(namespace)) {
 			if (prefix == null) {
 				prefix = "";
 			}
-			if (!StringUtils.hasLength(namespace)) {
-				return;
-			}
 			if (!namespace.equals(this.namespaces.get(prefix))) {
 				getContentHandler().startPrefixMapping(prefix, namespace);
 				this.namespaces.put(prefix, namespace);
@@ -201,11 +198,9 @@ abstract class AbstractStaxXMLReader extends AbstractXMLReader {
 	 * @see org.xml.sax.ContentHandler#endPrefixMapping(String)
 	 */
 	protected void endPrefixMapping(String prefix) throws SAXException {
-		if (getContentHandler() != null) {
-			if (this.namespaces.containsKey(prefix)) {
-				getContentHandler().endPrefixMapping(prefix);
-				this.namespaces.remove(prefix);
-			}
+		if (getContentHandler() != null && this.namespaces.containsKey(prefix)) {
+			getContentHandler().endPrefixMapping(prefix);
+			this.namespaces.remove(prefix);
 		}
 	}
 

spring-core/src/main/java/org/springframework/util/xml/AbstractXMLStreamReader.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2018 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -21,8 +21,6 @@ import javax.xml.stream.XMLStreamConstants;
 import javax.xml.stream.XMLStreamException;
 import javax.xml.stream.XMLStreamReader;
 
-import org.springframework.util.Assert;
-
 /**
  * Abstract base class for {@code XMLStreamReader}s.
  *
@@ -34,7 +32,7 @@ abstract class AbstractXMLStreamReader implements XMLStreamReader {
 	@Override
 	public String getElementText() throws XMLStreamException {
 		if (getEventType() != XMLStreamConstants.START_ELEMENT) {
-			throw new XMLStreamException("parser must be on START_ELEMENT to read next text", getLocation());
+			throw new XMLStreamException("Parser must be on START_ELEMENT to read next text", getLocation());
 		}
 		int eventType = next();
 		StringBuilder builder = new StringBuilder();
@@ -48,11 +46,11 @@ abstract class AbstractXMLStreamReader implements XMLStreamReader {
 				// skipping
 			}
 			else if (eventType == XMLStreamConstants.END_DOCUMENT) {
-				throw new XMLStreamException("unexpected end of document when reading element text content",
+				throw new XMLStreamException("Unexpected end of document when reading element text content",
 						getLocation());
 			}
 			else if (eventType == XMLStreamConstants.START_ELEMENT) {
-				throw new XMLStreamException("element text content may not contain START_ELEMENT", getLocation());
+				throw new XMLStreamException("Element text content may not contain START_ELEMENT", getLocation());
 			}
 			else {
 				throw new XMLStreamException("Unexpected event type " + eventType, getLocation());
@@ -84,22 +82,21 @@ abstract class AbstractXMLStreamReader implements XMLStreamReader {
 			return getName().getNamespaceURI();
 		}
 		else {
-			throw new IllegalStateException("parser must be on START_ELEMENT or END_ELEMENT state");
+			throw new IllegalStateException("Parser must be on START_ELEMENT or END_ELEMENT state");
 		}
 	}
 
 	@Override
 	public String getNamespaceURI(String prefix) {
-		Assert.notNull(prefix, "No prefix given");
 		return getNamespaceContext().getNamespaceURI(prefix);
 	}
 
 	@Override
 	public boolean hasText() {
 		int eventType = getEventType();
-		return eventType == XMLStreamConstants.SPACE || eventType == XMLStreamConstants.CHARACTERS ||
+		return (eventType == XMLStreamConstants.SPACE || eventType == XMLStreamConstants.CHARACTERS ||
 				eventType == XMLStreamConstants.COMMENT || eventType == XMLStreamConstants.CDATA ||
-				eventType == XMLStreamConstants.ENTITY_REFERENCE;
+				eventType == XMLStreamConstants.ENTITY_REFERENCE);
 	}
 
 	@Override
@@ -109,14 +106,14 @@ abstract class AbstractXMLStreamReader implements XMLStreamReader {
 			return getName().getPrefix();
 		}
 		else {
-			throw new IllegalStateException("parser must be on START_ELEMENT or END_ELEMENT state");
+			throw new IllegalStateException("Parser must be on START_ELEMENT or END_ELEMENT state");
 		}
 	}
 
 	@Override
 	public boolean hasName() {
 		int eventType = getEventType();
-		return eventType == XMLStreamConstants.START_ELEMENT || eventType == XMLStreamConstants.END_ELEMENT;
+		return (eventType == XMLStreamConstants.START_ELEMENT || eventType == XMLStreamConstants.END_ELEMENT);
 	}
 
 	@Override
@@ -174,7 +171,7 @@ abstract class AbstractXMLStreamReader implements XMLStreamReader {
 	}
 
 	@Override
-	public boolean hasNext() throws XMLStreamException {
+	public boolean hasNext() {
 		return getEventType() != END_DOCUMENT;
 	}
 
@@ -189,8 +186,7 @@ abstract class AbstractXMLStreamReader implements XMLStreamReader {
 	}
 
 	@Override
-	public int getTextCharacters(int sourceStart, char[] target, int targetStart, int length)
-			throws XMLStreamException {
+	public int getTextCharacters(int sourceStart, char[] target, int targetStart, int length) {
 		char[] source = getTextCharacters();
 		length = Math.min(length, source.length);
 		System.arraycopy(source, sourceStart, target, targetStart, length);
@@ -201,4 +197,5 @@ abstract class AbstractXMLStreamReader implements XMLStreamReader {
 	public int getTextLength() {
 		return getText().length();
 	}
+
 }

spring-core/src/main/java/org/springframework/util/xml/DomContentHandler.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2018 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -27,16 +27,13 @@ import org.w3c.dom.Text;
 import org.xml.sax.Attributes;
 import org.xml.sax.ContentHandler;
 import org.xml.sax.Locator;
-import org.xml.sax.SAXException;
-
-import org.springframework.util.Assert;
 
 /**
  * SAX {@code ContentHandler} that transforms callback calls to DOM {@code Node}s.
  *
  * @author Arjen Poutsma
- * @see org.w3c.dom.Node
  * @since 3.0
+ * @see org.w3c.dom.Node
  */
 class DomContentHandler implements ContentHandler {
 
@@ -46,36 +43,35 @@ class DomContentHandler implements ContentHandler {
 
 	private final Node node;
 
+
 	/**
-	 * Creates a new instance of the {@code DomContentHandler} with the given node.
-	 *
+	 * Create a new instance of the {@code DomContentHandler} with the given node.
 	 * @param node the node to publish events to
 	 */
 	DomContentHandler(Node node) {
-		Assert.notNull(node, "node must not be null");
 		this.node = node;
 		if (node instanceof Document) {
-			document = (Document) node;
+			this.document = (Document) node;
 		}
 		else {
-			document = node.getOwnerDocument();
+			this.document = node.getOwnerDocument();
 		}
-		Assert.notNull(document, "document must not be null");
 	}
 
+
 	private Node getParent() {
-		if (!elements.isEmpty()) {
-			return elements.get(elements.size() - 1);
+		if (!this.elements.isEmpty()) {
+			return this.elements.get(this.elements.size() - 1);
 		}
 		else {
-			return node;
+			return this.node;
 		}
 	}
 
 	@Override
-	public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
+	public void startElement(String uri, String localName, String qName, Attributes attributes) {
 		Node parent = getParent();
-		Element element = document.createElementNS(uri, qName);
+		Element element = this.document.createElementNS(uri, qName);
 		for (int i = 0; i < attributes.getLength(); i++) {
 			String attrUri = attributes.getURI(i);
 			String attrQname = attributes.getQName(i);
@@ -85,16 +81,16 @@ class DomContentHandler implements ContentHandler {
 			}
 		}
 		element = (Element) parent.appendChild(element);
-		elements.add(element);
+		this.elements.add(element);
 	}
 
 	@Override
-	public void endElement(String uri, String localName, String qName) throws SAXException {
-		elements.remove(elements.size() - 1);
+	public void endElement(String uri, String localName, String qName) {
+		this.elements.remove(this.elements.size() - 1);
 	}
 
 	@Override
-	public void characters(char[] ch, int start, int length) throws SAXException {
+	public void characters(char[] ch, int start, int length) {
 		String data = new String(ch, start, length);
 		Node parent = getParent();
 		Node lastChild = parent.getLastChild();
@@ -102,47 +98,47 @@ class DomContentHandler implements ContentHandler {
 			((Text) lastChild).appendData(data);
 		}
 		else {
-			Text text = document.createTextNode(data);
+			Text text = this.document.createTextNode(data);
 			parent.appendChild(text);
 		}
 	}
 
 	@Override
-	public void processingInstruction(String target, String data) throws SAXException {
+	public void processingInstruction(String target, String data) {
 		Node parent = getParent();
-		ProcessingInstruction pi = document.createProcessingInstruction(target, data);
+		ProcessingInstruction pi = this.document.createProcessingInstruction(target, data);
 		parent.appendChild(pi);
 	}
 
-	/*
-	 * Unsupported
-	 */
+
+	// Unsupported
 
 	@Override
 	public void setDocumentLocator(Locator locator) {
 	}
 
 	@Override
-	public void startDocument() throws SAXException {
+	public void startDocument() {
 	}
 
 	@Override
-	public void endDocument() throws SAXException {
+	public void endDocument() {
 	}
 
 	@Override
-	public void startPrefixMapping(String prefix, String uri) throws SAXException {
+	public void startPrefixMapping(String prefix, String uri) {
 	}
 
 	@Override
-	public void endPrefixMapping(String prefix) throws SAXException {
+	public void endPrefixMapping(String prefix) {
 	}
 
 	@Override
-	public void ignorableWhitespace(char[] ch, int start, int length) throws SAXException {
+	public void ignorableWhitespace(char[] ch, int start, int length) {
 	}
 
 	@Override
-	public void skippedEntity(String name) throws SAXException {
+	public void skippedEntity(String name) {
 	}
+
 }

spring-core/src/main/java/org/springframework/util/xml/StaxEventHandler.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2014 the original author or authors.
+ * Copyright 2002-2018 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -95,9 +95,9 @@ class StaxEventHandler extends AbstractStaxHandler {
 
 	}
 
-	private List<Namespace> getNamespaces(Map<String, String> namespaceMapping) {
-		List<Namespace> result = new ArrayList<Namespace>();
-		for (Map.Entry<String, String> entry : namespaceMapping.entrySet()) {
+	private List<Namespace> getNamespaces(Map<String, String> namespaceMappings) {
+		List<Namespace> result = new ArrayList<Namespace>(namespaceMappings.size());
+		for (Map.Entry<String, String> entry : namespaceMappings.entrySet()) {
 			String prefix = entry.getKey();
 			String namespaceUri = entry.getValue();
 			result.add(this.eventFactory.createNamespace(prefix, namespaceUri));
@@ -106,8 +106,9 @@ class StaxEventHandler extends AbstractStaxHandler {
 	}
 
 	private List<Attribute> getAttributes(Attributes attributes) {
-		List<Attribute> result = new ArrayList<Attribute>();
-		for (int i = 0; i < attributes.getLength(); i++) {
+		int attrLength = attributes.getLength();
+		List<Attribute> result = new ArrayList<Attribute>(attrLength);
+		for (int i = 0; i < attrLength; i++) {
 			QName attrName = toQName(attributes.getURI(i), attributes.getQName(i));
 			if (!isNamespaceDeclaration(attrName)) {
 				result.add(this.eventFactory.createAttribute(attrName, attributes.getValue(i)));
@@ -153,9 +154,8 @@ class StaxEventHandler extends AbstractStaxHandler {
 	}
 
 	// Ignored
-
 	@Override
-	protected void skippedEntityInternal(String name) throws XMLStreamException {
+	protected void skippedEntityInternal(String name) {
 	}
 
 

spring-core/src/main/java/org/springframework/util/xml/StaxEventXMLReader.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2013 the original author or authors.
+ * Copyright 2002-2018 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -41,7 +41,6 @@ import org.xml.sax.SAXException;
 import org.xml.sax.ext.Locator2;
 import org.xml.sax.helpers.AttributesImpl;
 
-import org.springframework.util.Assert;
 import org.springframework.util.StringUtils;
 
 /**
@@ -69,14 +68,13 @@ class StaxEventXMLReader extends AbstractStaxXMLReader {
 
 
 	/**
-	 * Constructs a new instance of the {@code StaxEventXmlReader} that reads from the given
-	 * {@code XMLEventReader}. The supplied event reader must be in {@code XMLStreamConstants.START_DOCUMENT} or
-	 * {@code XMLStreamConstants.START_ELEMENT} state.
+	 * Constructs a new instance of the {@code StaxEventXmlReader} that reads from
+	 * the given {@code XMLEventReader}. The supplied event reader must be in
+	 * {@code XMLStreamConstants.START_DOCUMENT} or {@code XMLStreamConstants.START_ELEMENT} state.
 	 * @param reader the {@code XMLEventReader} to read from
 	 * @throws IllegalStateException if the reader is not at the start of a document or element
 	 */
 	StaxEventXMLReader(XMLEventReader reader) {
-		Assert.notNull(reader, "'reader' must not be null");
 		try {
 			XMLEvent event = reader.peek();
 			if (event != null && !(event.isStartDocument() || event.isStartElement())) {

spring-core/src/main/java/org/springframework/util/xml/StaxStreamHandler.java

@@ -27,8 +27,6 @@ import org.xml.sax.Locator;
 import org.xml.sax.SAXException;
 import org.xml.sax.ext.LexicalHandler;
 
-import org.springframework.util.Assert;
-
 /**
  * SAX {@link org.xml.sax.ContentHandler} and {@link LexicalHandler}
  * that writes to an {@link XMLStreamWriter}.
@@ -42,7 +40,6 @@ class StaxStreamHandler extends AbstractStaxHandler {
 
 
 	public StaxStreamHandler(XMLStreamWriter streamWriter) {
-		Assert.notNull(streamWriter, "XMLStreamWriter must not be null");
 		this.streamWriter = streamWriter;
 	}
 

spring-core/src/main/java/org/springframework/util/xml/StaxStreamXMLReader.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2014 the original author or authors.
+ * Copyright 2002-2017 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -27,7 +27,6 @@ import org.xml.sax.SAXException;
 import org.xml.sax.ext.Locator2;
 import org.xml.sax.helpers.AttributesImpl;
 
-import org.springframework.util.Assert;
 import org.springframework.util.StringUtils;
 
 /**
@@ -61,7 +60,6 @@ class StaxStreamXMLReader extends AbstractStaxXMLReader {
 	 * @throws IllegalStateException if the reader is not at the start of a document or element
 	 */
 	StaxStreamXMLReader(XMLStreamReader reader) {
-		Assert.notNull(reader, "'reader' must not be null");
 		int event = reader.getEventType();
 		if (!(event == XMLStreamConstants.START_DOCUMENT || event == XMLStreamConstants.START_ELEMENT)) {
 			throw new IllegalStateException("XMLEventReader not at start of document or element");
@@ -238,7 +236,7 @@ class StaxStreamXMLReader extends AbstractStaxXMLReader {
 
 	private void handleDtd() throws SAXException {
 		if (getLexicalHandler() != null) {
-			javax.xml.stream.Location location = this.reader.getLocation();
+			Location location = this.reader.getLocation();
 			getLexicalHandler().startDTD(null, location.getPublicId(), location.getSystemId());
 		}
 		if (getLexicalHandler() != null) {

spring-core/src/main/java/org/springframework/util/xml/XMLEventStreamReader.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2013 the original author or authors.
+ * Copyright 2002-2018 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -92,7 +92,7 @@ class XMLEventStreamReader extends AbstractXMLStreamReader {
 	@Override
 	public boolean isStandalone() {
 		if (this.event.isStartDocument()) {
-			return ((StartDocument) event).isStandalone();
+			return ((StartDocument) this.event).isStandalone();
 		}
 		else {
 			throw new IllegalStateException();
@@ -147,7 +147,7 @@ class XMLEventStreamReader extends AbstractXMLStreamReader {
 	@Override
 	public String getText() {
 		if (this.event.isCharacters()) {
-			return event.asCharacters().getData();
+			return this.event.asCharacters().getData();
 		}
 		else if (this.event.getEventType() == XMLEvent.COMMENT) {
 			return ((Comment) this.event).getText();

spring-core/src/main/java/org/springframework/util/xml/XMLEventStreamWriter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2013 the original author or authors.
+ * Copyright 2002-2018 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -29,8 +29,6 @@ import javax.xml.stream.events.EndElement;
 import javax.xml.stream.events.Namespace;
 import javax.xml.stream.events.StartElement;
 
-import org.springframework.util.Assert;
-
 /**
  * Implementation of the {@link javax.xml.stream.XMLStreamWriter} interface
  * that wraps an {@link XMLEventWriter}.
@@ -53,8 +51,6 @@ class XMLEventStreamWriter implements XMLStreamWriter {
 
 
 	public XMLEventStreamWriter(XMLEventWriter eventWriter, XMLEventFactory eventFactory) {
-		Assert.notNull(eventWriter, "'eventWriter' must not be null");
-		Assert.notNull(eventFactory, "'eventFactory' must not be null");
 		this.eventWriter = eventWriter;
 		this.eventFactory = eventFactory;
 	}