org.zkoss.xel.util

Class XelContextProxy

java.lang.Object

org.zkoss.xel.util.XelContextProxy

All Implemented Interfaces:

XelContext

public class XelContextProxy
extends Object
implements XelContext

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

Since:

5.0.0

Author:

tomyeh

Constructor Summary

Constructors

Constructor and Description
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

Modifier and Type	Method and Description
Object	getAttribute(String name) Returns the value of the specified attribute, or null if not available.
Map<String,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(String name) Returns if the attribute is available.
Object	removeAttribute(String name) Removes the attribute.
Object	setAttribute(String name, 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 Object getAttribute(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 Object setAttribute(String name,
                           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(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 Object removeAttribute(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 Map<String,Object> getAttributes()

Description copied from interface: XelContext

Returns all attributes

Specified by:

getAttributes in interface XelContext