com.codemesh.terp.eval.executors
Class FirstSetter

java.lang.Object
  com.codemesh.terp.api.Executor.AbstractExecutor<Lvalue>
      com.codemesh.terp.eval.executors.FirstSetter

All Implemented Interfaces:

Executor<Lvalue>

public class FirstSetter
extends Executor.AbstractExecutor<Lvalue>

A setter for the first property of arrays/lists/sorted maps. The accepted types are not totally equivalent to FirstGetter because String instances are immutable.

Nested Class Summary

Nested classes/interfaces inherited from interface com.codemesh.terp.api.Executor

Executor.AbstractExecutor<T>, Executor.ForMethod

Constructor Summary

FirstSetter()

Method Summary

Lvalue	execute(java.util.List<java.lang.Object> args, TerpEvaluator eval, TerpContext ctx) Performs the executor's action on the given arguments in the given context.
boolean	matches(java.util.List<java.lang.Object> args) Returns true if the executor applies to the given arguments.

Methods inherited from class com.codemesh.terp.api.Executor.AbstractExecutor

execute

Methods inherited from class java.lang.Object

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

Constructor Detail

FirstSetter

public FirstSetter()

Method Detail

matches

public boolean matches(java.util.List<java.lang.Object> args)

Returns true if the executor applies to the given arguments. Typically, your custom executor will implement this method to check for the proper number of arguments and the proper argument types.

Parameters:

args - the arguments passed to the executor.

Returns:

true if the executor knows how to handle the given arguments, false otherwise.

execute

public Lvalue execute(java.util.List<java.lang.Object> args,
                      TerpEvaluator eval,
                      TerpContext ctx)

Performs the executor's action on the given arguments in the given context. Typically, your custom executor will implement this method to provide its core functionality.

Parameters:

args - the arguments.

eval - the evaluator to use. Can frequently be null.

ctx - the context in which the execution occurs. Can frequently be null.

Returns:

the execution result.