Package org.zkoss.zk.scripting.groovy

Class GroovyInterpreter

java.lang.Object

org.zkoss.zk.scripting.util.GenericInterpreter

org.zkoss.zk.scripting.groovy.GroovyInterpreter

All Implemented Interfaces:

Interpreter

public class GroovyInterpreter
extends GenericInterpreter

Groovy interpreter.

More about Groovy.

Author:

tomyeh

Field Summary

Fields inherited from class org.zkoss.zk.scripting.util.GenericInterpreter

UNDEFINED

Constructor Summary

Constructors

Constructor	Description
GroovyInterpreter()

Method Summary

Modifier and Type	Method	Description
protected boolean	contains(String name)	Tests whether a variable is defined in this interpreter.
void	destroy()	Reset the owner (GenericInterpreter.getOwner()) to null.
protected void	exec(String script)	Executes the specified script.
protected Object	get(String name)	Gets the variable from the interpreter.
org.zkoss.xel.Function	getFunction(String name, Class[] argTypes)	Returns the method.
Object	getNativeInterpreter()	Returns the native interpreter, or null if it is not initialized or destroyed.
void	init(Page owner, String zslang)	Initializes the interpreter.
protected void	set(String name, Object value)	Sets the variable to the interpreter.
protected void	unset(String name)	Removes the variable from the interpreter.

Methods inherited from class org.zkoss.zk.scripting.util.GenericInterpreter

afterExec, afterInterpret, beforeExec, beforeInterpret, contains, containsVariable, containsVariable, get, getClass, getCurrent, getFromNamespace, getFromNamespace, getFunction, getImplicit, getLanguage, getOwner, getVariable, getVariable, interpret, set, setVariable, setVariable, unset, unsetVariable, unsetVariable

Methods inherited from class java.lang.Object

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

Constructor Details

GroovyInterpreter

public GroovyInterpreter()

Method Details

getNativeInterpreter

public Object getNativeInterpreter()

Returns the native interpreter, or null if it is not initialized or destroyed. From application's standpoint, it never returns null, and the returned object must be an instance of GroovyShell

Since:

3.0.2

exec

protected void exec(String script)

Description copied from class: GenericInterpreter

Executes the specified script. Deriving class shall provide an implementation of this method, rather than overriding GenericInterpreter.interpret(java.lang.String, org.zkoss.zk.ui.ext.Scope).

Specified by:

exec in class GenericInterpreter

contains

protected boolean contains(String name)

Description copied from class: GenericInterpreter

Tests whether a variable is defined in this interpreter. Optional. Implement it if the interpreter can tell the difference between null and undefined.

By default, it tests whether GenericInterpreter.get(String) returns non-null.

Overrides:

contains in class GenericInterpreter

get

protected Object get(String name)

Description copied from class: GenericInterpreter

Gets the variable from the interpreter. Optional. Implement it if you want to expose variables defined in the interpreter to Java codes.

GenericInterpreter.beforeExec() is called first, before this method is invoked.

An empty (and fake) scope is pushed so GenericInterpreter.getFromNamespace(java.lang.String) always returns null.

Overrides:

get in class GenericInterpreter

set

protected void set(String name,
 Object value)

Description copied from class: GenericInterpreter

Sets the variable to the interpreter. Optional. Implement it if you want to allow Java codes to define a variable in the interpreter.

GenericInterpreter.beforeExec() is called first, before this method is invoked.

Overrides:

set in class GenericInterpreter

unset

protected void unset(String name)

Description copied from class: GenericInterpreter

Removes the variable from the interpreter. Optional. Implement it if you want to allow Java codes to undefine a variable from the interpreter.

GenericInterpreter.beforeExec() is called first, before this method is invoked.

Overrides:

unset in class GenericInterpreter

init

public void init(Page owner,
 String zslang)

Description copied from interface: Interpreter

Initializes the interpreter. It is called once when the new instance of interpreter is constructed.

Specified by:

init in interface Interpreter

Overrides:

init in class GenericInterpreter

zslang - the language this interpreter is associated with

destroy

public void destroy()

Description copied from class: GenericInterpreter

Reset the owner (GenericInterpreter.getOwner()) to null.

Specified by:

destroy in interface Interpreter

Overrides:

destroy in class GenericInterpreter

getFunction

public org.zkoss.xel.Function getFunction(String name,
 Class[] argTypes)

Returns the method.

Currently it only looks for closures, and argTypes are ignored.

Specified by:

getFunction in interface Interpreter

Overrides:

getFunction in class GenericInterpreter

argTypes - the list of argument (a.k.a., parameter) types. If null, Class[0] is assumed.