com.discursive.jccook.xml.jxpath.PersonExample.java Source code

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Here is the source code for com.discursive.jccook.xml.jxpath.PersonExample.java

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/* 
 * ========================================================================
 * 
 * Copyright 2005 Tim O'Brien.
 *
 * 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 com.discursive.jccook.xml.jxpath;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.apache.commons.jxpath.JXPathContext;
import org.apache.log4j.Logger;
import org.xml.sax.SAXException;

import com.discursive.jccook.util.LogInit;
import com.discursive.jccook.xml.bean.BetwixtExample;

public class PersonExample {

    private static Logger logger = Logger.getLogger(BetwixtExample.class);
    static {
        LogInit.init();
    }

    public static void main(String[] args) throws IOException, SAXException {
        new PersonExample().start();
    }

    public void start() throws IOException, SAXException {

        List people = new ArrayList();

        Person person1 = new Person();
        person1.setFirstName("Ahmad");
        person1.setLastName("Russell");
        person1.setAge(28);
        people.add(person1);

        Person person2 = new Person();
        person2.setFirstName("Tom");
        person2.setLastName("Russell");
        person2.setAge(35);
        people.add(person2);

        Person person3 = new Person();
        person3.setFirstName("Ahmad");
        person3.setLastName("Abuzayedeh");
        person3.setAge(33);
        people.add(person3);

        System.out.println("** People older than 30");
        JXPathContext context = JXPathContext.newContext(people);
        Iterator iterator = context.iterate(".[@age > 30]");
        printPeople(iterator);

        context = JXPathContext.newContext(people);
        System.out.println("** People with first name 'Ahmad'");
        iterator = context.iterate(".[@firstName = 'Ahmad']");
        printPeople(iterator);

        context = JXPathContext.newContext(people);
        System.out.println("** Second Person in List");
        Person p = (Person) context.getValue(".[2]");
        System.out.println("Person: " + p.getFirstName() + " " + p.getLastName() + ", age: " + p.getAge());
    }

    private void printPeople(Iterator iterator) {
        while (iterator.hasNext()) {
            Person p = (Person) iterator.next();
            System.out.println("Person: " + p.getFirstName() + " " + p.getLastName() + ", age: " + p.getAge());
        }
    }
}