org.zkoss.xel.util
Class XelContextProxy

java.lang.Object
  extended by org.zkoss.xel.util.XelContextProxy
All Implemented Interfaces:
XelContext

public class XelContextProxy
extends java.lang.Object
implements XelContext

A proxy to replace the variable resolver of a given XEL context.

Since:
5.0.0
Author:
tomyeh

Constructor Summary
XelContextProxy(XelContext ctx, FunctionMapper mapper)
          Replaces the function mapper with the specified one, but the variable resolver not changed.
XelContextProxy(XelContext ctx, VariableResolver resolver)
          Replaces the variable resolver with the specified one, but the function mapper not changed.
XelContextProxy(XelContext ctx, VariableResolver resolver, FunctionMapper mapper)
          Replaces both variable resolver and function mapper.
 
Method Summary
 java.lang.Object getAttribute(java.lang.String name)
          Returns the value of the specified attribute, or null if not available.
 java.util.Map<java.lang.String,java.lang.Object> getAttributes()
          Returns all attributes
 FunctionMapper getFunctionMapper()
          Returns the function mapper, or null if not available.
 VariableResolver getVariableResolver()
          Returns the variable resolver, or null if not available.
 boolean hasAttribute(java.lang.String name)
          Returns if the attribute is available.
 java.lang.Object removeAttribute(java.lang.String name)
          Removes the attribute.
 java.lang.Object setAttribute(java.lang.String name, java.lang.Object value)
          Sets the value of the specified attribute
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

XelContextProxy

public XelContextProxy(XelContext ctx,
                       VariableResolver resolver)
Replaces the variable resolver with the specified one, but the function mapper not changed.


XelContextProxy

public XelContextProxy(XelContext ctx,
                       FunctionMapper mapper)
Replaces the function mapper with the specified one, but the variable resolver not changed.


XelContextProxy

public XelContextProxy(XelContext ctx,
                       VariableResolver resolver,
                       FunctionMapper mapper)
Replaces both variable resolver and function mapper.

Method Detail

getVariableResolver

public VariableResolver getVariableResolver()
Description copied from interface: XelContext
Returns the variable resolver, or null if not available.

Specified by:
getVariableResolver in interface XelContext

getFunctionMapper

public FunctionMapper getFunctionMapper()
Description copied from interface: XelContext
Returns the function mapper, or null if not available.

Specified by:
getFunctionMapper in interface XelContext

getAttribute

public java.lang.Object getAttribute(java.lang.String name)
Description copied from interface: XelContext
Returns the value of the specified attribute, or null if not available.

Specified by:
getAttribute in interface XelContext
Parameters:
name - the name of the attribute to retrieve
Returns:
the value

setAttribute

public java.lang.Object setAttribute(java.lang.String name,
                                     java.lang.Object value)
Description copied from interface: XelContext
Sets the value of the specified attribute

Specified by:
setAttribute in interface XelContext
Parameters:
name - the name of the attribute to set
value - the value of the attribute to set
Returns:
the previous value

hasAttribute

public boolean hasAttribute(java.lang.String name)
Description copied from interface: XelContext
Returns if the attribute is available.

Notice that null is a valid value, so you can tell if an attribute is associated by examining the return value of XelContext.getAttribute(java.lang.String).

Specified by:
hasAttribute in interface XelContext
Parameters:
name - the name of the attribute to test

removeAttribute

public java.lang.Object removeAttribute(java.lang.String name)
Description copied from interface: XelContext
Removes the attribute.

Specified by:
removeAttribute in interface XelContext
Parameters:
name - the name of the attribute to remove.
Returns:
the previous value associated with the attribute, if any,

getAttributes

public java.util.Map<java.lang.String,java.lang.Object> getAttributes()
Description copied from interface: XelContext
Returns all attributes

Specified by:
getAttributes in interface XelContext


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