UnprocessedConfigListener.java

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package org.glassfish.internal.config;

import org.jvnet.hk2.annotations.Service;
import org.glassfish.hk2.api.PostConstruct;
import org.glassfish.hk2.runlevel.RunLevel;
import org.jvnet.hk2.config.TransactionListener;
import org.jvnet.hk2.config.Transactions;
import org.jvnet.hk2.config.UnprocessedChangeEvents;
import java.beans.PropertyChangeEvent;

import org.glassfish.internal.api.*;

import javax.inject.Inject;
import java.util.List;
import java.util.ArrayList;
import java.util.Collections;

/**
Listens for unprocessed config changes
 */
@Service
@RunLevel(value=PostStartupRunLevel.VAL, mode=RunLevel.RUNLEVEL_MODE_NON_VALIDATING)
public final class UnprocessedConfigListener implements PostConstruct, TransactionListener {
    @Inject
    private Transactions mTransactions;

    private final List<UnprocessedChangeEvents> mUnprocessedChangeEvents = new ArrayList();

    public UnprocessedConfigListener() {
        //debug( "UnprocessedConfigListener.UnprocessedConfigListener" );
    }

    public void postConstruct() {
        mTransactions.addTransactionsListener(this);
    }

    public void transactionCommited(final List<PropertyChangeEvent> changes) {
        // ignore, we only are interested in those that were not processed
    }

    public synchronized void unprocessedTransactedEvents(List<UnprocessedChangeEvents> changes) {
        mUnprocessedChangeEvents.addAll(changes);
    }
    
    public boolean serverRequiresRestart() {
        return getUnprocessedChangeEvents().size() != 0; 
    }

    public synchronized List<UnprocessedChangeEvents> getUnprocessedChangeEvents() {
        return Collections.unmodifiableList(mUnprocessedChangeEvents);
    }

}