org.zkoss.zk.xel.impl

Class ExecutionResolver

java.lang.Object

org.zkoss.zk.xel.impl.ExecutionResolver

All Implemented Interfaces:

VariableResolver, VariableResolverX

public class ExecutionResolver
extends java.lang.Object
implements VariableResolverX

A variable resolver that is based on the specified execution.

Since:

3.0.0

Author:

tomyeh

Constructor Summary

Constructors

Constructor and Description
ExecutionResolver(Execution exec, VariableResolver parent) Constructs a resolver with a parent and a page.

Method Summary

Modifier and Type	Method and Description
java.lang.Object	getSelf() Returns the self variable.
java.lang.Object	resolveVariable(java.lang.String name) Resolves the specified variable.
java.lang.Object	resolveVariable(XelContext ctx, java.lang.Object base, java.lang.Object onm) Resolves the the given variable on the given base object.
void	setSelf(java.lang.Object self) Sets the self variable.
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

ExecutionResolver

public ExecutionResolver(Execution exec,
                         VariableResolver parent)

Constructs a resolver with a parent and a page.

Parameters:

parent - the parent resolver (null means ignored).

exec - the current execution

Method Detail

setSelf

public void setSelf(java.lang.Object self)

Sets the self variable. The self variable also acts as the context to resolve other variables.

getSelf

public java.lang.Object getSelf()

Returns the self variable.

resolveVariable

public java.lang.Object resolveVariable(java.lang.String name)
                                 throws XelException

Description copied from interface: VariableResolver

Resolves the specified variable.

Specified by:

resolveVariable in interface VariableResolver

Parameters:

name - the name of the variable to resolve

Throws:

XelException

resolveVariable

public java.lang.Object resolveVariable(XelContext ctx,
                                        java.lang.Object base,
                                        java.lang.Object onm)

Description copied from interface: VariableResolverX

Resolves the the given variable on the given base object.

It resolves not only top-level variables but also properties. For example, when resolving foo.duke, resolveVariable(ctx, null, "foo") is called first. And if it returns an non-null object, resolveVariable(ctx, foo, "duke"),/code> is called then (where we assume the returned object in the previous call is foo).

Specified by:

resolveVariable in interface VariableResolverX

Parameters:

ctx - the context of this evaluation

base - the base object whose property value is to be returned, or null to resolve a top-level variable.

onm - the name of the variable (or property) to resolve

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object