javadoc

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

org.springframework.expression/src/main/java/org/springframework/expression/CacheablePropertyAccessor.java

@@ -1,22 +1,21 @@
 package org.springframework.expression;
 
-// TODO (asc) Do we need a 'caching is allowed' option to be configurable at parse time?
 /**
- * A CacheablePropertyAccessor is an optimized PropertyAccessor where the two parts of accessing the
- * property are separated: (1) resolving the property and (2) retrieving its value.  In some cases there is 
- * a large cost to discovering which property an expression refers to and once discovered it will 
- * always resolve to the same property.  In these situations a CacheablePropertyAccessor enables the 
- * resolution to be done once and a reusable object (an executor) returned that can be called over and 
- * over to retrieve the property value without going through resolution again.
+ * A CacheablePropertyAccessor is an optimized PropertyAccessor where the two parts of accessing the property are
+ * separated: (1) resolving the property and (2) retrieving its value. In some cases there is a large cost to
+ * discovering which property an expression refers to and once discovered it will always resolve to the same property.
+ * In these situations a CacheablePropertyAccessor enables the resolution to be done once and a reusable object (an
+ * executor) returned that can be called over and over to retrieve the property value without going through resolution
+ * again.
  * <p>
- *  
+ * 
  * @author Andy Clement
  */
 public abstract class CacheablePropertyAccessor implements PropertyAccessor {
 
 	/**
-	 * Attempt to resolve the named property and return an executor that can be called to
-	 * get the value of that property.  Return null if the property cannot be resolved.
+	 * Attempt to resolve the named property and return an executor that can be called to get the value of that
+	 * property. Return null if the property cannot be resolved.
 	 * 
 	 * @param context the evaluation context
 	 * @param target the target upon which the property is being accessed
@@ -26,8 +25,8 @@ public abstract class CacheablePropertyAccessor implements PropertyAccessor {
 	public abstract PropertyReaderExecutor getReaderAccessor(EvaluationContext context, Object target, Object name);
 
 	/**
-	 * Attempt to resolve the named property and return an executor that can be called to
-	 * set the value of that property.  Return null if the property cannot be resolved.
+	 * Attempt to resolve the named property and return an executor that can be called to set the value of that
+	 * property. Return null if the property cannot be resolved.
 	 * 
 	 * @param context the evaluation context
 	 * @param target the target upon which the property is being accessed
@@ -37,21 +36,22 @@ public abstract class CacheablePropertyAccessor implements PropertyAccessor {
 	public abstract PropertyWriterExecutor getWriterAccessor(EvaluationContext context, Object target, Object name);
 
 	// Implementation of PropertyAccessor follows, based on the resolver/executor model
-	
+
 	public final boolean canRead(EvaluationContext context, Object target, Object name) throws AccessException {
-		return getReaderAccessor(context,target,name) != null;
+		return getReaderAccessor(context, target, name) != null;
 	}
 
 	public final boolean canWrite(EvaluationContext context, Object target, Object name) throws AccessException {
-		return getWriterAccessor(context,target,name) != null;
+		return getWriterAccessor(context, target, name) != null;
 	}
 
 	public final Object read(EvaluationContext context, Object target, Object name) throws AccessException {
-		return getReaderAccessor(context,target,name).execute(context,target);
+		return getReaderAccessor(context, target, name).execute(context, target);
 	}
 
-	public final void write(EvaluationContext context, Object target, Object name, Object newValue) throws AccessException {
-		getWriterAccessor(context,target,name).execute(context,target,newValue);
+	public final void write(EvaluationContext context, Object target, Object name, Object newValue)
+			throws AccessException {
+		getWriterAccessor(context, target, name).execute(context, target, newValue);
 	}
 
 }