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Micro Distribution of the Payara Project for IBM JDK
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 * and Distribution License("CDDL") (collectively, the "License").  You
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 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
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package com.sun.enterprise.v3.server;

import org.jvnet.hk2.annotations.Service;
import javax.inject.Inject;
import javax.inject.Singleton;

import javax.xml.stream.XMLInputFactory;

import org.glassfish.hk2.api.Factory;
import org.glassfish.hk2.api.PerLookup;

/**
 * Allow people to inject {@link XMLInputFactory} via {@link Inject}.
 *
 * 
 * Component instantiation happens only when someone requests {@link XMLInputFactory},
 * so this is as lazy as it gets.
 *
 * 
 * TODO: if we need to let people choose StAX implementation, this is the place to do it. 
 *
 * @author Kohsuke Kawaguchi
 */
@Service
@Singleton
public class StAXParserFactory implements Factory {

    /* (non-Javadoc)
     * @see org.glassfish.hk2.api.Factory#provide()
     */
    @Override @PerLookup
    public XMLInputFactory provide() {
        // In JDK 1.6, StAX is part of JRE, so we use no argument variant of
        // newInstance(), where as on JDK 1.5, we use two argument version of
        // newInstance() so that we can pass the classloader that loads
        // XMLInputFactory to load the factory, otherwise by default StAX uses
        // Thread's context class loader to locate the factory. See:
        // https://glassfish.dev.java.net/issues/show_bug.cgi?id=6428
        return XMLInputFactory.class.getClassLoader() == null ?
                        XMLInputFactory.newInstance() :
                        XMLInputFactory.newInstance(XMLInputFactory.class.getName(),
                                XMLInputFactory.class.getClassLoader());
    }

    /* (non-Javadoc)
     * @see org.glassfish.hk2.api.Factory#dispose(java.lang.Object)
     */
    @Override
    public void dispose(XMLInputFactory instance) {
        
    }
}