home | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Groovy example source code file (ObjectArrayGetAtMetaMethod.java)

This example Groovy source code file (ObjectArrayGetAtMetaMethod.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Groovy tags/keywords

cachedclass, cachedclass, class, class, integer, metaclassimpl, metamethod, mypojometamethodsite, mypojometamethodsite, object, object, object_arr_class, objectarraygetatmetamethod, throwable

The Groovy ObjectArrayGetAtMetaMethod.java source code

 * Copyright 2003-2007 the original author or authors.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *     http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.
package org.codehaus.groovy.runtime.dgmimpl.arrays;

import groovy.lang.MetaClassImpl;
import groovy.lang.MetaMethod;
import org.codehaus.groovy.reflection.CachedClass;
import org.codehaus.groovy.reflection.ReflectionCache;
import org.codehaus.groovy.runtime.callsite.CallSite;
import org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite;

public class ObjectArrayGetAtMetaMethod extends ArrayGetAtMetaMethod {
    private static final CachedClass OBJECT_ARR_CLASS = ReflectionCache.OBJECT_ARRAY_CLASS;

    public Class getReturnType() {
        return Object.class;

    public final CachedClass getDeclaringClass() {
        return OBJECT_ARR_CLASS;

    public Object invoke(Object object, Object[] arguments) {
        final Object[] objects = (Object[]) object;
        return objects[normaliseIndex((Integer) arguments[0], objects.length)];

    public CallSite createPojoCallSite(CallSite site, MetaClassImpl metaClass, MetaMethod metaMethod, Class[] params, Object receiver, Object[] args) {
        if (!(args[0] instanceof Integer))
            return PojoMetaMethodSite.createNonAwareCallSite(site, metaClass, metaMethod, params, args);
            return new MyPojoMetaMethodSite(site, metaClass, metaMethod, params);

    private static class MyPojoMetaMethodSite extends PojoMetaMethodSite {
        public MyPojoMetaMethodSite(CallSite site, MetaClassImpl metaClass, MetaMethod metaMethod, Class[] params) {
            super(site, metaClass, metaMethod, params);

        public Object call(Object receiver, Object arg) throws Throwable {
            if (checkPojoMetaClass()) {
                try {
                    final Object[] objects = (Object[]) receiver;
                    return objects[normaliseIndex((Integer) arg, objects.length)];
                catch (ClassCastException e) {
                    if ((receiver instanceof Object[]) && (arg instanceof Integer))
                        throw e;
            return super.call(receiver, arg);

Other Groovy examples (source code examples)

Here is a short list of links related to this Groovy ObjectArrayGetAtMetaMethod.java source code file:

new blog posts


Copyright 1998-2016 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.