org.xchain.namespaces.hibernate.test.command.TestIterateEmpty.java Source code

Introduction

Here is the source code for org.xchain.namespaces.hibernate.test.command.TestIterateEmpty.java

Source

/**
 *    Copyright 2011 meltmedia
 *
 *    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,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */
package org.xchain.namespaces.hibernate.test.command;

import java.util.Iterator;

import org.apache.commons.jxpath.JXPathContext;
import org.xchain.Command;
import org.xchain.annotations.Attribute;
import org.xchain.annotations.AttributeType;
import org.xchain.annotations.Element;
import org.xchain.namespaces.hibernate.test.om.Person;

/**
 * @author Devon Tackett
 * @author Christian Trimble
 */
@Element(localName = "iterate-empty")
public abstract class TestIterateEmpty implements Command {
    @Attribute(localName = "source", type = AttributeType.JXPATH_VALUE)
    public abstract Iterator getSource(JXPathContext context);

    public abstract boolean hasSource();

    @Attribute(localName = "result", type = AttributeType.QNAME)
    public abstract String getResult(JXPathContext context);

    public abstract boolean hasResult();

    public boolean execute(JXPathContext context) throws Exception {
        Iterator<Person> sourceIterator = getSource(context);

        context.setValue(getResult(context), !sourceIterator.hasNext());

        // Allow execution to continue.
        return false;
    }
}