Mixed polishing along with recent changes

spring-context/src/main/java/org/springframework/cache/CacheManager.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2011 the original author or authors.
+ * Copyright 2002-2014 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.
@@ -29,13 +29,13 @@ public interface CacheManager {
 	/**
 	 * Return the cache associated with the given name.
 	 * @param name cache identifier (must not be {@code null})
-	 * @return associated cache, or {@code null} if none is found
+	 * @return the associated cache, or {@code null} if none is found
 	 */
 	Cache getCache(String name);
 
 	/**
 	 * Return a collection of the caches known by this cache manager.
-	 * @return names of caches known by the cache manager.
+	 * @return names of caches known by the cache manager
 	 */
 	Collection<String> getCacheNames();
 

spring-expression/src/main/java/org/springframework/expression/spel/ast/CompoundExpression.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2013 the original author or authors.
+ * Copyright 2002-2014 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.
@@ -32,7 +32,8 @@ public class CompoundExpression extends SpelNodeImpl {
 	public CompoundExpression(int pos,SpelNodeImpl... expressionComponents) {
 		super(pos, expressionComponents);
 		if (expressionComponents.length < 2) {
-			throw new IllegalStateException("Dont build compound expression less than one entry: "+expressionComponents.length);
+			throw new IllegalStateException("Do not build compound expression less than one entry: " +
+					expressionComponents.length);
 		}
 	}
 
@@ -42,11 +43,9 @@ public class CompoundExpression extends SpelNodeImpl {
 		if (getChildCount() == 1) {
 			return this.children[0].getValueRef(state);
 		}
-		TypedValue result = null;
-		SpelNodeImpl nextNode = null;
+		SpelNodeImpl nextNode = this.children[0];
 		try {
-			nextNode = this.children[0];
-			result = nextNode.getValueInternal(state);
+			TypedValue result = nextNode.getValueInternal(state);
 			int cc = getChildCount();
 			for (int i = 1; i < cc - 1; i++) {
 				try {
@@ -75,8 +74,8 @@ public class CompoundExpression extends SpelNodeImpl {
 	}
 
 	/**
-	 * Evaluates a compound expression. This involves evaluating each piece in turn and the return value from each piece
-	 * is the active context object for the subsequent piece.
+	 * Evaluates a compound expression. This involves evaluating each piece in turn and the
+	 * return value from each piece is the active context object for the subsequent piece.
 	 * @param state the state in which the expression is being evaluated
 	 * @return the final value from the last piece of the compound expression
 	 */

spring-expression/src/main/java/org/springframework/expression/spel/ast/Indexer.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2013 the original author or authors.
+ * Copyright 2002-2014 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.
@@ -34,7 +34,7 @@ import org.springframework.expression.spel.support.ReflectivePropertyAccessor;
 
 /**
  * An Indexer can index into some proceeding structure to access a particular piece of it.
- * Supported structures are: strings/collections (lists/sets)/arrays
+ * Supported structures are: strings / collections (lists/sets) / arrays.
  *
  * @author Andy Clement
  * @author Phillip Webb
@@ -88,6 +88,206 @@ public class Indexer extends SpelNodeImpl {
 	}
 
 
+	@Override
+	protected ValueRef getValueRef(ExpressionState state) throws EvaluationException {
+		TypedValue context = state.getActiveContextObject();
+		Object targetObject = context.getValue();
+		TypeDescriptor targetObjectTypeDescriptor = context.getTypeDescriptor();
+		TypedValue indexValue = null;
+		Object index = null;
+
+		// This first part of the if clause prevents a 'double dereference' of
+		// the property (SPR-5847)
+		if (targetObject instanceof Map && (this.children[0] instanceof PropertyOrFieldReference)) {
+			PropertyOrFieldReference reference = (PropertyOrFieldReference) this.children[0];
+			index = reference.getName();
+			indexValue = new TypedValue(index);
+		}
+		else {
+			// In case the map key is unqualified, we want it evaluated against
+			// the root object so temporarily push that on whilst evaluating the key
+			try {
+				state.pushActiveContextObject(state.getRootContextObject());
+				indexValue = this.children[0].getValueInternal(state);
+				index = indexValue.getValue();
+			}
+			finally {
+				state.popActiveContextObject();
+			}
+		}
+
+		// Indexing into a Map
+		if (targetObject instanceof Map) {
+			Object key = index;
+			if (targetObjectTypeDescriptor.getMapKeyTypeDescriptor() != null) {
+				key = state.convertValue(key, targetObjectTypeDescriptor.getMapKeyTypeDescriptor());
+			}
+			return new MapIndexingValueRef(state.getTypeConverter(), (Map<?, ?>) targetObject, key,
+					targetObjectTypeDescriptor);
+		}
+
+		if (targetObject == null) {
+			throw new SpelEvaluationException(getStartPosition(), SpelMessage.CANNOT_INDEX_INTO_NULL_VALUE);
+		}
+
+		// if the object is something that looks indexable by an integer,
+		// attempt to treat the index value as a number
+		if (targetObject.getClass().isArray() || targetObject instanceof Collection || targetObject instanceof String) {
+			int idx = (Integer) state.convertValue(index, TypeDescriptor.valueOf(Integer.class));
+			if (targetObject.getClass().isArray()) {
+				return new ArrayIndexingValueRef(state.getTypeConverter(), targetObject, idx, targetObjectTypeDescriptor);
+			}
+			else if (targetObject instanceof Collection) {
+				return new CollectionIndexingValueRef((Collection<?>) targetObject, idx, targetObjectTypeDescriptor,
+						state.getTypeConverter(), state.getConfiguration().isAutoGrowCollections(),
+						state.getConfiguration().getMaximumAutoGrowSize());
+			}
+			else if (targetObject instanceof String) {
+				return new StringIndexingLValue((String) targetObject, idx, targetObjectTypeDescriptor);
+			}
+		}
+
+		// Try and treat the index value as a property of the context object
+		// TODO could call the conversion service to convert the value to a String
+		if (indexValue.getTypeDescriptor().getType() == String.class) {
+			return new PropertyIndexingValueRef(targetObject, (String) indexValue.getValue(),
+					state.getEvaluationContext(), targetObjectTypeDescriptor);
+		}
+
+		throw new SpelEvaluationException(getStartPosition(), SpelMessage.INDEXING_NOT_SUPPORTED_FOR_TYPE,
+				targetObjectTypeDescriptor.toString());
+	}
+
+	@Override
+	public String toStringAST() {
+		StringBuilder sb = new StringBuilder();
+		sb.append("[");
+		for (int i = 0; i < getChildCount(); i++) {
+			if (i > 0) {
+				sb.append(",");
+			}
+			sb.append(getChild(i).toStringAST());
+		}
+		sb.append("]");
+		return sb.toString();
+	}
+
+	private void setArrayElement(TypeConverter converter, Object ctx, int idx, Object newValue,
+			Class<?> arrayComponentType) throws EvaluationException {
+
+		if (arrayComponentType == Integer.TYPE) {
+			int[] array = (int[]) ctx;
+			checkAccess(array.length, idx);
+			array[idx] = (Integer) converter.convertValue(newValue, TypeDescriptor.forObject(newValue),
+					TypeDescriptor.valueOf(Integer.class));
+		}
+		else if (arrayComponentType == Boolean.TYPE) {
+			boolean[] array = (boolean[]) ctx;
+			checkAccess(array.length, idx);
+			array[idx] = (Boolean) converter.convertValue(newValue, TypeDescriptor.forObject(newValue),
+					TypeDescriptor.valueOf(Boolean.class));
+		}
+		else if (arrayComponentType == Character.TYPE) {
+			char[] array = (char[]) ctx;
+			checkAccess(array.length, idx);
+			array[idx] = (Character) converter.convertValue(newValue, TypeDescriptor.forObject(newValue),
+					TypeDescriptor.valueOf(Character.class));
+		}
+		else if (arrayComponentType == Long.TYPE) {
+			long[] array = (long[]) ctx;
+			checkAccess(array.length, idx);
+			array[idx] = (Long) converter.convertValue(newValue, TypeDescriptor.forObject(newValue),
+					TypeDescriptor.valueOf(Long.class));
+		}
+		else if (arrayComponentType == Short.TYPE) {
+			short[] array = (short[]) ctx;
+			checkAccess(array.length, idx);
+			array[idx] = (Short) converter.convertValue(newValue, TypeDescriptor.forObject(newValue),
+					TypeDescriptor.valueOf(Short.class));
+		}
+		else if (arrayComponentType == Double.TYPE) {
+			double[] array = (double[]) ctx;
+			checkAccess(array.length, idx);
+			array[idx] = (Double) converter.convertValue(newValue, TypeDescriptor.forObject(newValue),
+					TypeDescriptor.valueOf(Double.class));
+		}
+		else if (arrayComponentType == Float.TYPE) {
+			float[] array = (float[]) ctx;
+			checkAccess(array.length, idx);
+			array[idx] = (Float) converter.convertValue(newValue, TypeDescriptor.forObject(newValue),
+					TypeDescriptor.valueOf(Float.class));
+		}
+		else if (arrayComponentType == Byte.TYPE) {
+			byte[] array = (byte[]) ctx;
+			checkAccess(array.length, idx);
+			array[idx] = (Byte) converter.convertValue(newValue, TypeDescriptor.forObject(newValue),
+					TypeDescriptor.valueOf(Byte.class));
+		}
+		else {
+			Object[] array = (Object[]) ctx;
+			checkAccess(array.length, idx);
+			array[idx] = converter.convertValue(newValue, TypeDescriptor.forObject(newValue),
+					TypeDescriptor.valueOf(arrayComponentType));
+		}
+	}
+
+	private Object accessArrayElement(Object ctx, int idx) throws SpelEvaluationException {
+		Class<?> arrayComponentType = ctx.getClass().getComponentType();
+		if (arrayComponentType == Integer.TYPE) {
+			int[] array = (int[]) ctx;
+			checkAccess(array.length, idx);
+			return array[idx];
+		}
+		else if (arrayComponentType == Boolean.TYPE) {
+			boolean[] array = (boolean[]) ctx;
+			checkAccess(array.length, idx);
+			return array[idx];
+		}
+		else if (arrayComponentType == Character.TYPE) {
+			char[] array = (char[]) ctx;
+			checkAccess(array.length, idx);
+			return array[idx];
+		}
+		else if (arrayComponentType == Long.TYPE) {
+			long[] array = (long[]) ctx;
+			checkAccess(array.length, idx);
+			return array[idx];
+		}
+		else if (arrayComponentType == Short.TYPE) {
+			short[] array = (short[]) ctx;
+			checkAccess(array.length, idx);
+			return array[idx];
+		}
+		else if (arrayComponentType == Double.TYPE) {
+			double[] array = (double[]) ctx;
+			checkAccess(array.length, idx);
+			return array[idx];
+		}
+		else if (arrayComponentType == Float.TYPE) {
+			float[] array = (float[]) ctx;
+			checkAccess(array.length, idx);
+			return array[idx];
+		}
+		else if (arrayComponentType == Byte.TYPE) {
+			byte[] array = (byte[]) ctx;
+			checkAccess(array.length, idx);
+			return array[idx];
+		}
+		else {
+			Object[] array = (Object[]) ctx;
+			checkAccess(array.length, idx);
+			return array[idx];
+		}
+	}
+
+	private void checkAccess(int arrayLength, int index) throws SpelEvaluationException {
+		if (index > arrayLength) {
+			throw new SpelEvaluationException(getStartPosition(), SpelMessage.ARRAY_INDEX_OUT_OF_BOUNDS,
+					arrayLength, index);
+		}
+	}
+
+
 	private class ArrayIndexingValueRef implements ValueRef {
 
 		private final TypeConverter typeConverter;
@@ -127,7 +327,7 @@ public class Indexer extends SpelNodeImpl {
 
 
 	@SuppressWarnings({"rawtypes", "unchecked"})
-	private class MapIndexingValueRef implements ValueRef {
+	private static class MapIndexingValueRef implements ValueRef {
 
 		private final TypeConverter typeConverter;
 
@@ -137,16 +337,13 @@ public class Indexer extends SpelNodeImpl {
 
 		private final TypeDescriptor mapEntryTypeDescriptor;
 
-
-		MapIndexingValueRef(TypeConverter typeConverter, Map map, Object key,
-				TypeDescriptor mapEntryTypeDescriptor) {
+		public MapIndexingValueRef(TypeConverter typeConverter, Map map, Object key, TypeDescriptor mapEntryTypeDescriptor) {
 			this.typeConverter = typeConverter;
 			this.map = map;
 			this.key = key;
 			this.mapEntryTypeDescriptor = mapEntryTypeDescriptor;
 		}
 
-
 		@Override
 		public TypedValue getValue() {
 			Object value = this.map.get(this.key);
@@ -180,7 +377,6 @@ public class Indexer extends SpelNodeImpl {
 
 		private final TypeDescriptor targetObjectTypeDescriptor;
 
-
 		public PropertyIndexingValueRef(Object targetObject, String value, EvaluationContext evaluationContext,
 				TypeDescriptor targetObjectTypeDescriptor) {
 			this.targetObject = targetObject;
@@ -194,15 +390,14 @@ public class Indexer extends SpelNodeImpl {
 		public TypedValue getValue() {
 			Class<?> targetObjectRuntimeClass = getObjectClass(this.targetObject);
 			try {
-				if (Indexer.this.cachedReadName != null && Indexer.this.cachedReadName.equals(this.name) && Indexer.this.cachedReadTargetType != null &&
+				if (Indexer.this.cachedReadName != null && Indexer.this.cachedReadName.equals(this.name) &&
+						Indexer.this.cachedReadTargetType != null &&
 						Indexer.this.cachedReadTargetType.equals(targetObjectRuntimeClass)) {
-					// it is OK to use the cached accessor
+					// It is OK to use the cached accessor
 					return Indexer.this.cachedReadAccessor.read(this.evaluationContext, this.targetObject, this.name);
 				}
-
 				List<PropertyAccessor> accessorsToTry = AstUtils.getPropertyAccessorsToTry(
 						targetObjectRuntimeClass, this.evaluationContext.getPropertyAccessors());
-
 				if (accessorsToTry != null) {
 					for (PropertyAccessor accessor : accessorsToTry) {
 						if (accessor.canRead(this.evaluationContext, this.targetObject, this.name)) {
@@ -230,9 +425,10 @@ public class Indexer extends SpelNodeImpl {
 		public void setValue(Object newValue) {
 			Class<?> contextObjectClass = getObjectClass(this.targetObject);
 			try {
-				if (Indexer.this.cachedWriteName != null && Indexer.this.cachedWriteName.equals(this.name) && Indexer.this.cachedWriteTargetType != null &&
+				if (Indexer.this.cachedWriteName != null && Indexer.this.cachedWriteName.equals(this.name) &&
+						Indexer.this.cachedWriteTargetType != null &&
 						Indexer.this.cachedWriteTargetType.equals(contextObjectClass)) {
-					// it is OK to use the cached accessor
+					// It is OK to use the cached accessor
 					Indexer.this.cachedWriteAccessor.write(this.evaluationContext, this.targetObject, this.name, newValue);
 					return;
 				}
@@ -270,7 +466,7 @@ public class Indexer extends SpelNodeImpl {
 
 		private final int index;
 
-		private final TypeDescriptor collectionEntryTypeDescriptor;
+		private final TypeDescriptor collectionEntryDescriptor;
 
 		private final TypeConverter typeConverter;
 
@@ -278,12 +474,11 @@ public class Indexer extends SpelNodeImpl {
 
 		private final int maximumSize;
 
-
-		CollectionIndexingValueRef(Collection collection, int index, TypeDescriptor collectionEntryTypeDescriptor,
+		public CollectionIndexingValueRef(Collection collection, int index, TypeDescriptor collectionEntryTypeDescriptor,
 				TypeConverter typeConverter, boolean growCollection, int maximumSize) {
 			this.collection = collection;
 			this.index = index;
-			this.collectionEntryTypeDescriptor = collectionEntryTypeDescriptor;
+			this.collectionEntryDescriptor = collectionEntryTypeDescriptor;
 			this.typeConverter = typeConverter;
 			this.growCollection = growCollection;
 			this.maximumSize = maximumSize;
@@ -295,12 +490,12 @@ public class Indexer extends SpelNodeImpl {
 			growCollectionIfNecessary();
 			if (this.collection instanceof List) {
 				Object o = ((List) this.collection).get(this.index);
-				return new TypedValue(o, this.collectionEntryTypeDescriptor.elementTypeDescriptor(o));
+				return new TypedValue(o, this.collectionEntryDescriptor.elementTypeDescriptor(o));
 			}
 			int pos = 0;
 			for (Object o : this.collection) {
 				if (pos == this.index) {
-					return new TypedValue(o, this.collectionEntryTypeDescriptor.elementTypeDescriptor(o));
+					return new TypedValue(o, this.collectionEntryDescriptor.elementTypeDescriptor(o));
 				}
 				pos++;
 			}
@@ -312,35 +507,31 @@ public class Indexer extends SpelNodeImpl {
 			growCollectionIfNecessary();
 			if (this.collection instanceof List) {
 				List list = (List) this.collection;
-				if (this.collectionEntryTypeDescriptor.getElementTypeDescriptor() != null) {
+				if (this.collectionEntryDescriptor.getElementTypeDescriptor() != null) {
 					newValue = this.typeConverter.convertValue(newValue, TypeDescriptor.forObject(newValue),
-							this.collectionEntryTypeDescriptor.getElementTypeDescriptor());
+							this.collectionEntryDescriptor.getElementTypeDescriptor());
 				}
 				list.set(this.index, newValue);
 			}
 			else {
 				throw new SpelEvaluationException(getStartPosition(), SpelMessage.INDEXING_NOT_SUPPORTED_FOR_TYPE,
-						this.collectionEntryTypeDescriptor.toString());
+						this.collectionEntryDescriptor.toString());
 			}
 		}
 
 		private void growCollectionIfNecessary() {
 			if (this.index >= this.collection.size()) {
-
 				if (!this.growCollection) {
 					throw new SpelEvaluationException(getStartPosition(), SpelMessage.COLLECTION_INDEX_OUT_OF_BOUNDS,
 							this.collection.size(), this.index);
 				}
-
 				if(this.index >= this.maximumSize) {
 					throw new SpelEvaluationException(getStartPosition(), SpelMessage.UNABLE_TO_GROW_COLLECTION);
 				}
-
-				if (this.collectionEntryTypeDescriptor.getElementTypeDescriptor() == null) {
+				if (this.collectionEntryDescriptor.getElementTypeDescriptor() == null) {
 					throw new SpelEvaluationException(getStartPosition(), SpelMessage.UNABLE_TO_GROW_COLLECTION_UNKNOWN_ELEMENT_TYPE);
 				}
-
-				TypeDescriptor elementType = this.collectionEntryTypeDescriptor.getElementTypeDescriptor();
+				TypeDescriptor elementType = this.collectionEntryDescriptor.getElementTypeDescriptor();
 				try {
 					int newElements = this.index - this.collection.size();
 					while (newElements >= 0) {
@@ -369,14 +560,12 @@ public class Indexer extends SpelNodeImpl {
 
 		private final TypeDescriptor typeDescriptor;
 
-
 		public StringIndexingLValue(String target, int index, TypeDescriptor typeDescriptor) {
 			this.target = target;
 			this.index = index;
 			this.typeDescriptor = typeDescriptor;
 		}
 
-
 		@Override
 		public TypedValue getValue() {
 			if (this.index >= this.target.length()) {
@@ -398,204 +587,4 @@ public class Indexer extends SpelNodeImpl {
 		}
 	}
 
-	@Override
-	protected ValueRef getValueRef(ExpressionState state) throws EvaluationException {
-
-		TypedValue context = state.getActiveContextObject();
-		Object targetObject = context.getValue();
-		TypeDescriptor targetObjectTypeDescriptor = context.getTypeDescriptor();
-		TypedValue indexValue = null;
-		Object index = null;
-
-		// This first part of the if clause prevents a 'double dereference' of
-		// the property (SPR-5847)
-		if (targetObject instanceof Map && (this.children[0] instanceof PropertyOrFieldReference)) {
-			PropertyOrFieldReference reference = (PropertyOrFieldReference) this.children[0];
-			index = reference.getName();
-			indexValue = new TypedValue(index);
-		}
-		else {
-			// In case the map key is unqualified, we want it evaluated against
-			// the root object so temporarily push that on whilst evaluating the key
-			try {
-				state.pushActiveContextObject(state.getRootContextObject());
-				indexValue = this.children[0].getValueInternal(state);
-				index = indexValue.getValue();
-			}
-			finally {
-				state.popActiveContextObject();
-			}
-		}
-
-		// Indexing into a Map
-		if (targetObject instanceof Map) {
-			Object key = index;
-			if (targetObjectTypeDescriptor.getMapKeyTypeDescriptor() != null) {
-				key = state.convertValue(key, targetObjectTypeDescriptor.getMapKeyTypeDescriptor());
-			}
-			return new MapIndexingValueRef(state.getTypeConverter(), (Map<?, ?>) targetObject, key,
-					targetObjectTypeDescriptor);
-		}
-
-		if (targetObject == null) {
-			throw new SpelEvaluationException(getStartPosition(), SpelMessage.CANNOT_INDEX_INTO_NULL_VALUE);
-		}
-
-		// if the object is something that looks indexable by an integer,
-		// attempt to treat the index value as a number
-		if (targetObject.getClass().isArray() || targetObject instanceof Collection || targetObject instanceof String) {
-			int idx = (Integer) state.convertValue(index, TypeDescriptor.valueOf(Integer.class));
-			if (targetObject.getClass().isArray()) {
-				return new ArrayIndexingValueRef(state.getTypeConverter(), targetObject, idx, targetObjectTypeDescriptor);
-			}
-			else if (targetObject instanceof Collection) {
-				return new CollectionIndexingValueRef((Collection<?>) targetObject, idx, targetObjectTypeDescriptor,
-						state.getTypeConverter(), state.getConfiguration().isAutoGrowCollections(),
-						state.getConfiguration().getMaximumAutoGrowSize());
-			}
-			else if (targetObject instanceof String) {
-				return new StringIndexingLValue((String) targetObject, idx, targetObjectTypeDescriptor);
-			}
-		}
-
-		// Try and treat the index value as a property of the context object
-		// TODO could call the conversion service to convert the value to a String
-		if (indexValue.getTypeDescriptor().getType() == String.class) {
-			return new PropertyIndexingValueRef(targetObject, (String) indexValue.getValue(),
-					state.getEvaluationContext(), targetObjectTypeDescriptor);
-		}
-
-		throw new SpelEvaluationException(getStartPosition(), SpelMessage.INDEXING_NOT_SUPPORTED_FOR_TYPE,
-				targetObjectTypeDescriptor.toString());
-	}
-
-	@Override
-	public String toStringAST() {
-		StringBuilder sb = new StringBuilder();
-		sb.append("[");
-		for (int i = 0; i < getChildCount(); i++) {
-			if (i > 0) {
-				sb.append(",");
-			}
-			sb.append(getChild(i).toStringAST());
-		}
-		sb.append("]");
-		return sb.toString();
-	}
-
-	private void setArrayElement(TypeConverter converter, Object ctx, int idx, Object newValue, Class<?> clazz)
-			throws EvaluationException {
-		Class<?> arrayComponentType = clazz;
-		if (arrayComponentType == Integer.TYPE) {
-			int[] array = (int[]) ctx;
-			checkAccess(array.length, idx);
-			array[idx] = (Integer) converter.convertValue(newValue, TypeDescriptor.forObject(newValue),
-					TypeDescriptor.valueOf(Integer.class));
-		}
-		else if (arrayComponentType == Boolean.TYPE) {
-			boolean[] array = (boolean[]) ctx;
-			checkAccess(array.length, idx);
-			array[idx] = (Boolean) converter.convertValue(newValue, TypeDescriptor.forObject(newValue),
-					TypeDescriptor.valueOf(Boolean.class));
-		}
-		else if (arrayComponentType == Character.TYPE) {
-			char[] array = (char[]) ctx;
-			checkAccess(array.length, idx);
-			array[idx] = (Character) converter.convertValue(newValue, TypeDescriptor.forObject(newValue),
-					TypeDescriptor.valueOf(Character.class));
-		}
-		else if (arrayComponentType == Long.TYPE) {
-			long[] array = (long[]) ctx;
-			checkAccess(array.length, idx);
-			array[idx] = (Long) converter.convertValue(newValue, TypeDescriptor.forObject(newValue),
-					TypeDescriptor.valueOf(Long.class));
-		}
-		else if (arrayComponentType == Short.TYPE) {
-			short[] array = (short[]) ctx;
-			checkAccess(array.length, idx);
-			array[idx] = (Short) converter.convertValue(newValue, TypeDescriptor.forObject(newValue),
-					TypeDescriptor.valueOf(Short.class));
-		}
-		else if (arrayComponentType == Double.TYPE) {
-			double[] array = (double[]) ctx;
-			checkAccess(array.length, idx);
-			array[idx] = (Double) converter.convertValue(newValue, TypeDescriptor.forObject(newValue),
-					TypeDescriptor.valueOf(Double.class));
-		}
-		else if (arrayComponentType == Float.TYPE) {
-			float[] array = (float[]) ctx;
-			checkAccess(array.length, idx);
-			array[idx] = (Float) converter.convertValue(newValue, TypeDescriptor.forObject(newValue),
-					TypeDescriptor.valueOf(Float.class));
-		}
-		else if (arrayComponentType == Byte.TYPE) {
-			byte[] array = (byte[]) ctx;
-			checkAccess(array.length, idx);
-			array[idx] = (Byte) converter.convertValue(newValue, TypeDescriptor.forObject(newValue),
-					TypeDescriptor.valueOf(Byte.class));
-		}
-		else {
-			Object[] array = (Object[]) ctx;
-			checkAccess(array.length, idx);
-			array[idx] = converter.convertValue(newValue, TypeDescriptor.forObject(newValue),
-					TypeDescriptor.valueOf(clazz));
-		}
-	}
-
-	private Object accessArrayElement(Object ctx, int idx) throws SpelEvaluationException {
-		Class<?> arrayComponentType = ctx.getClass().getComponentType();
-		if (arrayComponentType == Integer.TYPE) {
-			int[] array = (int[]) ctx;
-			checkAccess(array.length, idx);
-			return array[idx];
-		}
-		else if (arrayComponentType == Boolean.TYPE) {
-			boolean[] array = (boolean[]) ctx;
-			checkAccess(array.length, idx);
-			return array[idx];
-		}
-		else if (arrayComponentType == Character.TYPE) {
-			char[] array = (char[]) ctx;
-			checkAccess(array.length, idx);
-			return array[idx];
-		}
-		else if (arrayComponentType == Long.TYPE) {
-			long[] array = (long[]) ctx;
-			checkAccess(array.length, idx);
-			return array[idx];
-		}
-		else if (arrayComponentType == Short.TYPE) {
-			short[] array = (short[]) ctx;
-			checkAccess(array.length, idx);
-			return array[idx];
-		}
-		else if (arrayComponentType == Double.TYPE) {
-			double[] array = (double[]) ctx;
-			checkAccess(array.length, idx);
-			return array[idx];
-		}
-		else if (arrayComponentType == Float.TYPE) {
-			float[] array = (float[]) ctx;
-			checkAccess(array.length, idx);
-			return array[idx];
-		}
-		else if (arrayComponentType == Byte.TYPE) {
-			byte[] array = (byte[]) ctx;
-			checkAccess(array.length, idx);
-			return array[idx];
-		}
-		else {
-			Object[] array = (Object[]) ctx;
-			checkAccess(array.length, idx);
-			return array[idx];
-		}
-	}
-
-	private void checkAccess(int arrayLength, int index) throws SpelEvaluationException {
-		if (index > arrayLength) {
-			throw new SpelEvaluationException(getStartPosition(), SpelMessage.ARRAY_INDEX_OUT_OF_BOUNDS,
-					arrayLength, index);
-		}
-	}
-
 }

spring-expression/src/main/java/org/springframework/expression/spel/ast/SpelNodeImpl.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2013 the original author or authors.
+ * Copyright 2002-2014 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.
@@ -37,6 +37,7 @@ public abstract class SpelNodeImpl implements SpelNode {
 
 	private static SpelNodeImpl[] NO_CHILDREN = new SpelNodeImpl[0];
 
+
 	protected int pos; // start = top 16bits, end = bottom 16bits
 
 	protected SpelNodeImpl[] children = SpelNodeImpl.NO_CHILDREN;
@@ -152,11 +153,6 @@ public abstract class SpelNodeImpl implements SpelNode {
 		return ExpressionUtils.convertTypedValue(state.getEvaluationContext(), getValueInternal(state), desiredReturnType);
 	}
 
-	public abstract TypedValue getValueInternal(ExpressionState expressionState) throws EvaluationException;
-
-	@Override
-	public abstract String toStringAST();
-
 	@Override
 	public int getStartPosition() {
 		return (this.pos >> 16);
@@ -170,4 +166,8 @@ public abstract class SpelNodeImpl implements SpelNode {
 	protected ValueRef getValueRef(ExpressionState state) throws EvaluationException {
 		throw new SpelEvaluationException(this.pos, SpelMessage.NOT_ASSIGNABLE, toStringAST());
 	}
+
+
+	public abstract TypedValue getValueInternal(ExpressionState expressionState) throws EvaluationException;
+
 }

spring-expression/src/test/java/org/springframework/expression/spel/MapAccessTests.java

@@ -81,9 +81,19 @@ public class MapAccessTests extends AbstractExpressionTests {
 		Object bean = new TestBean("name1", new TestBean("name2", null, "Description 2", 15, props1), "description 1", 6, props1);
 
 		ExpressionParser parser = new SpelExpressionParser();
-		Expression exp = parser.parseExpression("testBean.properties['key2']");
-		String key = (String) exp.getValue(bean);
-		assertNotNull(key);
+		Expression expr = parser.parseExpression("testBean.properties['key2']");
+		assertEquals("value2", expr.getValue(bean));
+	}
+
+	@Test
+	public void testGetValueFromRootMap() {
+		Map<String, String> map = new HashMap<String, String>();
+		map.put("key", "value");
+		EvaluationContext context = new StandardEvaluationContext(map);
+
+		ExpressionParser spelExpressionParser = new SpelExpressionParser();
+		Expression expr = spelExpressionParser.parseExpression("#root['key']");
+		assertEquals("value", expr.getValue(map));
 	}
 
 

spring-messaging/src/main/java/org/springframework/messaging/simp/user/UserDestinationMessageHandler.java

@@ -31,9 +31,7 @@ import org.springframework.messaging.simp.SimpMessageHeaderAccessor;
 import org.springframework.messaging.simp.SimpMessageType;
 import org.springframework.messaging.simp.SimpMessagingTemplate;
 import org.springframework.messaging.support.MessageBuilder;
-import org.springframework.messaging.support.MessageHeaderAccessor;
 import org.springframework.util.Assert;
-import org.springframework.util.CollectionUtils;
 
 /**
  * Provides support for messages sent to "user" destinations, translating the
@@ -60,7 +58,7 @@ public class UserDestinationMessageHandler implements MessageHandler, SmartLifec
 
 	private final UserDestinationResolver userDestinationResolver;
 
-	private Object lifecycleMonitor = new Object();
+	private final Object lifecycleMonitor = new Object();
 
 	private volatile boolean running = false;
 
@@ -85,12 +83,6 @@ public class UserDestinationMessageHandler implements MessageHandler, SmartLifec
 		this.userDestinationResolver = userDestinationResolver;
 	}
 
-	/**
-	 * Return the configured {@link UserDestinationResolver}.
-	 */
-	public UserDestinationResolver getUserDestinationResolver() {
-		return this.userDestinationResolver;
-	}
 
 	/**
 	 * Return the configured messaging template for sending messages with
@@ -100,16 +92,24 @@ public class UserDestinationMessageHandler implements MessageHandler, SmartLifec
 		return this.brokerMessagingTemplate;
 	}
 
-	@Override
-	public boolean isAutoStartup() {
-		return true;
+	/**
+	 * Return the configured {@link UserDestinationResolver}.
+	 */
+	public UserDestinationResolver getUserDestinationResolver() {
+		return this.userDestinationResolver;
 	}
 
+
 	@Override
 	public int getPhase() {
 		return Integer.MAX_VALUE;
 	}
 
+	@Override
+	public boolean isAutoStartup() {
+		return true;
+	}
+
 	@Override
 	public final boolean isRunning() {
 		synchronized (this.lifecycleMonitor) {
@@ -143,9 +143,9 @@ public class UserDestinationMessageHandler implements MessageHandler, SmartLifec
 		}
 	}
 
+
 	@Override
 	public void handleMessage(Message<?> message) throws MessagingException {
-
 		UserDestinationResult result = this.userDestinationResolver.resolveDestination(message);
 		if (result == null) {
 			return;
@@ -154,13 +154,11 @@ public class UserDestinationMessageHandler implements MessageHandler, SmartLifec
 		if (destinations.isEmpty()) {
 			return;
 		}
-
 		SimpMessageHeaderAccessor headerAccessor = SimpMessageHeaderAccessor.wrap(message);
 		if (SimpMessageType.MESSAGE.equals(headerAccessor.getMessageType())) {
 			headerAccessor.setHeader(SUBSCRIBE_DESTINATION, result.getSubscribeDestination());
 			message = MessageBuilder.withPayload(message.getPayload()).setHeaders(headerAccessor).build();
 		}
-
 		for (String targetDestination : destinations) {
 			if (logger.isDebugEnabled()) {
 				logger.debug("Sending message to resolved destination=" + targetDestination);

spring-tx/src/main/java/org/springframework/transaction/interceptor/RollbackRuleAttribute.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2014 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.
@@ -16,10 +16,10 @@
 
 package org.springframework.transaction.interceptor;
 
-import org.springframework.util.Assert;
-
 import java.io.Serializable;
 
+import org.springframework.util.Assert;
+
 /**
  * Rule determining whether or not a given exception (and any subclasses)
  * should cause a rollback.
@@ -60,7 +60,7 @@ public class RollbackRuleAttribute implements Serializable{
 	 * not a {@code Throwable} type or is {@code null}
 	 */
 	public RollbackRuleAttribute(Class<?> clazz) {
-		Assert.notNull(clazz, "'clazz' cannot be null.");
+		Assert.notNull(clazz, "'clazz' cannot be null");
 		if (!Throwable.class.isAssignableFrom(clazz)) {
 			throw new IllegalArgumentException(
 					"Cannot construct rollback rule from [" + clazz.getName() + "]: it's not a Throwable");
@@ -87,7 +87,7 @@ public class RollbackRuleAttribute implements Serializable{
 	 * {@code exceptionName} is {@code null} or empty
 	 */
 	public RollbackRuleAttribute(String exceptionName) {
-		Assert.hasText(exceptionName, "'exceptionName' cannot be null or empty.");
+		Assert.hasText(exceptionName, "'exceptionName' cannot be null or empty");
 		this.exceptionName = exceptionName;
 	}
 
@@ -111,7 +111,7 @@ public class RollbackRuleAttribute implements Serializable{
 
 
 	private int getDepth(Class<?> exceptionClass, int depth) {
-		if (exceptionClass.getName().indexOf(this.exceptionName) != -1) {
+		if (exceptionClass.getName().contains(this.exceptionName)) {
 			// Found it!
 			return depth;
 		}

spring-webmvc/src/main/java/org/springframework/web/servlet/mvc/method/annotation/ServletRequestMethodArgumentResolver.java

@@ -19,7 +19,6 @@ package org.springframework.web.servlet.mvc.method.annotation;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.Reader;
-import java.lang.reflect.Method;
 import java.security.Principal;
 import java.time.ZoneId;
 import java.util.Locale;
@@ -101,6 +100,9 @@ public class ServletRequestMethodArgumentResolver implements HandlerMethodArgume
 		else if (HttpSession.class.isAssignableFrom(paramType)) {
 			return request.getSession();
 		}
+		else if (HttpMethod.class.equals(paramType)) {
+			return ((ServletWebRequest) webRequest).getHttpMethod();
+		}
 		else if (Principal.class.isAssignableFrom(paramType)) {
 			return request.getUserPrincipal();
 		}
@@ -120,13 +122,10 @@ public class ServletRequestMethodArgumentResolver implements HandlerMethodArgume
 		else if (Reader.class.isAssignableFrom(paramType)) {
 			return request.getReader();
 		}
-		else if (HttpMethod.class.equals(paramType)) {
-			return ((ServletWebRequest) webRequest).getHttpMethod();
-		}
 		else {
-			// should never happen..
-			Method method = parameter.getMethod();
-			throw new UnsupportedOperationException("Unknown parameter type: " + paramType + " in method: " + method);
+			// should never happen...
+			throw new UnsupportedOperationException(
+					"Unknown parameter type: " + paramType + " in method: " + parameter.getMethod());
 		}
 	}
 

spring-webmvc/src/main/java/org/springframework/web/servlet/tags/form/FormTag.java

@@ -18,7 +18,6 @@ package org.springframework.web.servlet.tags.form;
 
 import java.io.UnsupportedEncodingException;
 import java.util.Map;
-
 import javax.servlet.ServletRequest;
 import javax.servlet.ServletResponse;
 import javax.servlet.http.HttpServletRequest;
@@ -424,7 +423,6 @@ public class FormTag extends AbstractHtmlElementTag {
 	 * with the context and servlet paths, and the result is used. Otherwise, the
 	 * {@link org.springframework.web.servlet.support.RequestContext#getRequestUri()
 	 * originating URI} is used.
-	 *
 	 * @return the value that is to be used for the '{@code action}' attribute
 	 */
 	protected String resolveAction() throws JspException {
@@ -436,7 +434,8 @@ public class FormTag extends AbstractHtmlElementTag {
 		}
 		else if (StringUtils.hasText(servletRelativeAction)) {
 			String pathToServlet = getRequestContext().getPathToServlet();
-			if (servletRelativeAction.startsWith("/") && !servletRelativeAction.startsWith(getRequestContext().getContextPath())) {
+			if (servletRelativeAction.startsWith("/") &&
+					!servletRelativeAction.startsWith(getRequestContext().getContextPath())) {
 				servletRelativeAction = pathToServlet + servletRelativeAction;
 			}
 			servletRelativeAction = getDisplayString(evaluate(ACTION_ATTRIBUTE, servletRelativeAction));
@@ -444,12 +443,12 @@ public class FormTag extends AbstractHtmlElementTag {
 		}
 		else {
 			String requestUri = getRequestContext().getRequestUri();
-			String encoding = pageContext.getResponse().getCharacterEncoding();
+			String encoding = this.pageContext.getResponse().getCharacterEncoding();
 			try {
 				requestUri = UriUtils.encodePath(requestUri, encoding);
 			}
-			catch (UnsupportedEncodingException e) {
-				throw new JspException(e);
+			catch (UnsupportedEncodingException ex) {
+				// shouldn't happen - if it does, proceed with requestUri as-is
 			}
 			ServletResponse response = this.pageContext.getResponse();
 			if (response instanceof HttpServletResponse) {
@@ -476,7 +475,7 @@ public class FormTag extends AbstractHtmlElementTag {
 	private String processAction(String action) {
 		RequestDataValueProcessor processor = getRequestContext().getRequestDataValueProcessor();
 		ServletRequest request = this.pageContext.getRequest();
-		if ((processor != null) && (request instanceof HttpServletRequest)) {
+		if (processor != null && request instanceof HttpServletRequest) {
 			action = processor.processAction((HttpServletRequest) request, action, getHttpMethod());
 		}
 		return action;