/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

 *

 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.

 *

 * The contents of this file are subject to the terms of either the GNU

 * General Public License Version 2 only ("GPL") or the Common

 * Development and Distribution License("CDDL") (collectively, the

 * "License"). You may not use this file except in compliance with the

 * License. You can obtain a copy of the License at

 * http://www.netbeans.org/cddl-gplv2.html

 * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the

 * specific language governing permissions and limitations under the

 * License.  When distributing the software, include this License Header

 * Notice in each file and include the License file at

 * nbbuild/licenses/CDDL-GPL-2-CP.  Sun designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Sun in the GPL Version 2 section of the License file that

 * accompanied this code. If applicable, add the following below the

 * License Header, with the fields enclosed by brackets [] replaced by

 * your own identifying information:

 * "Portions Copyrighted [year] [name of copyright owner]"

 *

 * If you wish your version of this file to be governed by only the CDDL

 * or only the GPL Version 2, indicate your decision by adding

 * "[Contributor] elects to include this software in this distribution

 * under the [CDDL or GPL Version 2] license." If you do not indicate a

 * single choice of license, a recipient has the option to distribute

 * your version of this file under either the CDDL, the GPL Version 2 or

 * to extend the choice of license to its licensees as provided above.

 * However, if you add GPL Version 2 code and therefore, elected the GPL

 * Version 2 license, then the option applies only if the new code is

 * made subject to such option by the copyright holder.

 *

 * Contributor(s):

 *

 * Portions Copyrighted 2009 Sun Microsystems, Inc.

 */

package org.netbeans.modules.parsing.impl.indexing;

import java.net.URL;

import java.util.HashMap;

import java.util.IdentityHashMap;

import java.util.LinkedList;

import java.util.List;

import java.util.Map;

import java.util.logging.Logger;

import org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater.Work;

import org.openide.filesystems.FileEvent;

import org.openide.filesystems.FileStateInvalidException;

/**

 *

 * @author Tomas Zezula

 */

class FileEventLog implements Runnable {

    private static final Logger LOG = Logger.getLogger(FileEventLog.class.getName());

    public static enum FileOp {

       DELETE,

       CREATE

    };

    private final Map<URL,Map<URL,Pair<FileEventLog.FileOp,Work>>> changes;

    public FileEventLog() {

        this.changes = new HashMap<URL, Map<URL,Pair<FileEventLog.FileOp,Work>>>();

    }

    public void record (final FileOp operation, final URL root, final FileEvent event, final Work work) {

            assert operation != null;

            assert root != null;

            assert event != null;

            assert root != null;

            try {

                record(operation, root, event.getFile().getURL(), event, work);

            } catch (FileStateInvalidException e) {

                e.printStackTrace();

            }

        }

    public void record (final FileOp operation, final URL root, final URL fileURL, FileEvent event, final Work work) {

            assert operation != null;

            assert root != null;

            assert fileURL != null;

            assert root != null;

            Map<URL,Pair<FileOp,Work>> rootSlot = changes.get(root);

            if (rootSlot == null) {

                rootSlot = new HashMap<URL,Pair<FileOp,Work>>();

                changes.put(root, rootSlot);

            }

            rootSlot.put(fileURL, Pair.<FileOp,Work>of(operation,work));

            event.runWhenDeliveryOver(this);

        }

        public void run () {

            try {

                commit();

            } finally {

                cleanUp();

            }

        }

        private void commit () {

            final List<Work> first = new LinkedList<Work>();

            final List<Work> rest = new LinkedList<Work>();

            final IdentityHashMap<Work,Work> seenDelete = new IdentityHashMap<Work, Work>();

            for (Map<URL,Pair<FileOp,Work>> changesInRoot : changes.values()) {

                for (Pair<FileOp,Work> desc : changesInRoot.values()) {

                    if (desc.first == FileOp.DELETE) {

                        if (!seenDelete.containsKey(desc.second)) {

                            first.add(desc.second);

                            seenDelete.put(desc.second, desc.second);

                        }

                    }

                    else {

                        rest.add(desc.second);

                    }

                }

            }

            final RepositoryUpdater ru = RepositoryUpdater.getDefault();

            for (Work wrk : first) {

                LOG.finer("SCHEDULING: " + wrk);    //NOI18N

                ru.scheduleWork(wrk, false);

            }

            for (Work wrk : rest) {

                LOG.finer("SCHEDULING: " + wrk);    //NOI18N

                ru.scheduleWork(wrk, false);

            }

        }

        private void cleanUp() {

            this.changes.clear();

        }

}

/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

 *

 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.

 *

 * The contents of this file are subject to the terms of either the GNU

 * General Public License Version 2 only ("GPL") or the Common

 * Development and Distribution License("CDDL") (collectively, the

 * "License"). You may not use this file except in compliance with the

 * License. You can obtain a copy of the License at

 * http://www.netbeans.org/cddl-gplv2.html

 * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the

 * specific language governing permissions and limitations under the

 * License.  When distributing the software, include this License Header

 * Notice in each file and include the License file at

 * nbbuild/licenses/CDDL-GPL-2-CP.  Sun designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Sun in the GPL Version 2 section of the License file that

 * accompanied this code. If applicable, add the following below the

 * License Header, with the fields enclosed by brackets [] replaced by

 * your own identifying information:

 * "Portions Copyrighted [year] [name of copyright owner]"

 *

 * If you wish your version of this file to be governed by only the CDDL

 * or only the GPL Version 2, indicate your decision by adding

 * "[Contributor] elects to include this software in this distribution

 * under the [CDDL or GPL Version 2] license." If you do not indicate a

 * single choice of license, a recipient has the option to distribute

 * your version of this file under either the CDDL, the GPL Version 2 or

 * to extend the choice of license to its licensees as provided above.

 * However, if you add GPL Version 2 code and therefore, elected the GPL

 * Version 2 license, then the option applies only if the new code is

 * made subject to such option by the copyright holder.

 *

 * Contributor(s):

 *

 * Portions Copyrighted 2009 Sun Microsystems, Inc.

 */

package org.netbeans.modules.parsing.impl.indexing;

/**

 *

 * @author Tomas Zezula

 */

final class Pair<P,K> {

    public final P first;

    public final K second;

    private Pair (P first, K second) {

        this.first = first;

        this.second = second;

    }

    public static <P,K> Pair<P,K> of (P first, K second) {

        return new Pair<P,K> (first,second);

    }

    @Override

    public int hashCode () {

        int hashCode  = 0;

        hashCode ^= first == null ? 0 : first.hashCode();

        hashCode ^= second == null ? 0: second.hashCode();

        return hashCode;

    }

    @Override

    public boolean equals (final Object other) {

        if (other instanceof Pair) {

            Pair otherPair = (Pair) other;

            return (this.first == null ? otherPair.first == null : this.first.equals(otherPair.first)) &&

                   (this.second == null ? otherPair.second == null : this.second.equals(otherPair.second));

        }

        return false;

    }

    @Override

    public String toString () {

        return String.format("Pair[%s,%s]", first,second);

    }

}

import org.openide.util.Exceptions;

    final FileEventLog eventQueue = new FileEventLog();