org.zkoss.xel

Interface XelContext

All Known Implementing Classes:

SimpleXelContext, XelContextProxy

public interface XelContext

Context information for XEL evaluation.

Since:

3.0.0

Author:

tomyeh

Method Summary

Methods

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

Method Detail

getVariableResolver

VariableResolver getVariableResolver()

Returns the variable resolver, or null if not available.

getFunctionMapper

FunctionMapper getFunctionMapper()

Returns the function mapper, or null if not available.

getAttribute

Object getAttribute(String name)

Returns the value of the specified attribute, or null if not available.

Parameters:

name - the name of the attribute to retrieve

Returns:

the value

Since:

5.0.0

setAttribute

Object setAttribute(String name,
                  Object value)

Sets the value of the specified attribute

Parameters:

name - the name of the attribute to set

value - the value of the attribute to set

Returns:

the previous value

Since:

5.0.0

hasAttribute

boolean hasAttribute(String name)

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 getAttribute(java.lang.String).

Parameters:

name - the name of the attribute to test

Since:

5.0.0

removeAttribute

Object removeAttribute(String name)

Removes the attribute.

Parameters:

name - the name of the attribute to remove.

Returns:

the previous value associated with the attribute, if any,

Since:

5.0.0

getAttributes

Map<String,Object> getAttributes()

Returns all attributes

Since:

5.0.0