public static VCSFileProxy toFileProxy(URI uri) {

        FileObject fo = null;

        try {

            fo = URLMapper.findFileObject(uri.toURL());

        } catch (MalformedURLException ex) {

            VersioningManager.LOG.log(Level.WARNING, uri != null ? uri.toString() : null, ex);

        return fo != null ? VCSFileProxy.createFileProxy(fo) : null;

    }    

}

import java.net.URI;

import java.net.URISyntaxException;

import java.util.logging.Level;

import org.netbeans.spi.queries.CollocationQueryImplementation2;

 * @author Tomas Stupka

    @Override

        } else {

            String path = file.getPath();

            int idx = path.lastIndexOf("/");

            if(idx > 0) {

                path = path.substring(0, idx);

            } else {

                return null;

            try {

                file = new URI(file.getScheme(), file.getUserInfo(), file.getHost(), file.getPort(), path, file.getQuery(), file.getFragment());

            } catch (URISyntaxException ex) {

                VersioningManager.LOG.log(Level.WARNING, path, ex);

                return null;

            return findRoot(file);

        }

    }

}

import org.netbeans.spi.queries.CollocationQueryImplementation2;

/*

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

 *

 * Copyright 1997-2010 Oracle and/or its affiliates. All rights reserved.

 *

 * Oracle and Java are registered trademarks of Oracle and/or its affiliates.

 * Other names may be trademarks of their respective owners.

 *

 * 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.  Oracle designates this

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

 * by Oracle 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]"

 *

 * Contributor(s):

 *

 * The Original Software is NetBeans. The Initial Developer of the Original

 * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun

 * Microsystems, Inc. All Rights Reserved.

 *

 * 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.

 */

package org.netbeans.modules.versioning.core.spi;

import java.io.IOException;

import org.openide.filesystems.FileStateInvalidException;

import java.io.File;

import org.netbeans.api.queries.CollocationQuery;

import org.netbeans.junit.NbTestCase;

import org.netbeans.modules.versioning.spi.testvcs.TestVCS;

import org.netbeans.modules.versioning.spi.testvcs.TestVCSCollocationQuery;

import org.openide.util.test.MockLookup;

/**

 * Versioning SPI unit tests of VCSVisibilityQuery.

 * 

 * @author Tomas Stupka

 */

public class VCSCollocationQueryTest extends NbTestCase {

    public VCSCollocationQueryTest(String testName) {

        super(testName);

        MockLookup.setLayersAndInstances();

    }

    protected void setUp() throws Exception {

        MockLookup.setLayersAndInstances();

        File userdir = new File(getWorkDir() + "userdir");

        userdir.mkdirs();

        System.setProperty("netbeans.user", userdir.getAbsolutePath());

        super.setUp();

    }

        public void testFindRootExisting() throws FileStateInvalidException, IOException, Exception {

        File folder = new File(getWorkDir(), TestVCS.VERSIONED_FOLDER_SUFFIX);

        folder.mkdirs();

        File file = new File(folder, "somefile");

        file.createNewFile();

        assertRoot(folder, file);

    }

    public void testFindRootNotExisting() throws FileStateInvalidException, IOException, Exception {

        File folder = new File(getWorkDir(), TestVCS.VERSIONED_FOLDER_SUFFIX);

        folder.mkdirs();

        File file = new File(folder, "somefile");

        assertRoot(folder, file);

    }

    private void assertRoot(File root, File file) {

        assertEquals(root.toURI(), CollocationQuery.findRoot(file.toURI()));

    }

    public void testAreCollocatedExisting() throws FileStateInvalidException, IOException, Exception {

        File folder = new File(getWorkDir(), TestVCS.VERSIONED_FOLDER_SUFFIX);

        folder.mkdirs();

        File file1 = new File(folder, "file2" + TestVCSCollocationQuery.COLLOCATED_FILENAME_SUFFIX);

        file1.createNewFile();

        File file2 = new File(folder, "file1" + TestVCSCollocationQuery.COLLOCATED_FILENAME_SUFFIX);

        file2.createNewFile();

        assertCollocated(true, file1, file2);

    }

    public void testAreCollocatedNotExisting() throws FileStateInvalidException, IOException, Exception {

        File folder = new File(getWorkDir(), TestVCS.VERSIONED_FOLDER_SUFFIX);

        folder.mkdirs();

        File file1 = new File(folder, "file2" + TestVCSCollocationQuery.COLLOCATED_FILENAME_SUFFIX);

        file1.createNewFile();

        File file2 = new File(folder, "file1" + TestVCSCollocationQuery.COLLOCATED_FILENAME_SUFFIX);

        file2.createNewFile();

        assertCollocated(true, file1, file2);

    }

    public void testNotCollocatedExisting() throws FileStateInvalidException, IOException, Exception {

        File folder = new File(getWorkDir(), TestVCS.VERSIONED_FOLDER_SUFFIX);

        folder.mkdirs();

        File file1 = new File(folder, "file1");

        file1.createNewFile();

        File file2 = new File(folder, "file2");

        file2.createNewFile();

        assertCollocated(false, file1, file2);

    }

    public void testNotCollocatedNotExisting() throws FileStateInvalidException, IOException, Exception {

        File folder = new File(getWorkDir(), TestVCS.VERSIONED_FOLDER_SUFFIX);

        folder.mkdirs();

        File file1 = new File(folder, "file1");

        file1.createNewFile();

        File file2 = new File(folder, "file2");

        file2.createNewFile();

        assertCollocated(false, file1, file2);

    }

    void assertCollocated(boolean expected, File file1, File file2) {

        if(expected) {

            assertTrue(CollocationQuery.areCollocated(file1.toURI(), file2.toURI()));

        } else {

            assertFalse(CollocationQuery.areCollocated(file1.toURI(), file2.toURI()));

        }

    }

}

import org.netbeans.spi.queries.CollocationQueryImplementation2;

    private CollocationQueryImplementation2 vcq;

        vcq = new TestVCSCollocationQuery();

    @Override

    public CollocationQueryImplementation2 getCollocationQueryImplementation() {

        return vcq;

}

/*

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

 *

 * Copyright 2012 Oracle and/or its affiliates. All rights reserved.

 *

 * Oracle and Java are registered trademarks of Oracle and/or its affiliates.

 * Other names may be trademarks of their respective owners.

 *

 * 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.  Oracle designates this

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

 * by Oracle 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 2012 Sun Microsystems, Inc.

 */

package org.netbeans.modules.versioning.spi.testvcs;

import java.net.URI;

import org.netbeans.modules.versioning.core.Utils;

import org.netbeans.modules.versioning.core.api.VCSFileProxy;

import org.netbeans.spi.queries.CollocationQueryImplementation2;

/**

 *

 * @author tomas

 */

public class TestVCSCollocationQuery implements CollocationQueryImplementation2 {

    public static String COLLOCATED_FILENAME_SUFFIX = "_iscollocated";

    @Override

    public boolean areCollocated(URI file1, URI file2) {

        String name1 = file1.getPath();

        String name2 = file2.getPath();

        return name1.endsWith(COLLOCATED_FILENAME_SUFFIX) && name2.endsWith(COLLOCATED_FILENAME_SUFFIX);

    }

    @Override

    public URI findRoot(URI file) {

        VCSFileProxy proxy = TestVCS.getInstance().getTopmostManagedAncestor(Utils.toFileProxy(file));

        try {

            return proxy.toFileObject().getURL().toURI();

        } catch (Exception ex) {

            ex.printStackTrace();

            assert false;

            return null;

        }

    }

}

import java.net.URI;

import org.netbeans.spi.queries.CollocationQueryImplementation2;

    private CollocationQueryImplementation2 collocationQuery;

                @Override

                public URI findRoot(URI uri) {

                    File file = cqi != null ? cqi.findRoot(new File(uri)) : null;

                    return file != null ? file.toURI() : null;

                }

            };

        } 

        return collocationQuery;        

    }

/*

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

 *

 * Copyright 1997-2010 Oracle and/or its affiliates. All rights reserved.

 *

 * Oracle and Java are registered trademarks of Oracle and/or its affiliates.

 * Other names may be trademarks of their respective owners.

 *

 * 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.  Oracle designates this

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

 * by Oracle 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]"

 *

 * Contributor(s):

 *

 * The Original Software is NetBeans. The Initial Developer of the Original

 * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun

 * Microsystems, Inc. All Rights Reserved.

 *

 * 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.

 */

package org.netbeans.modules.versioning.spi;

import java.io.IOException;

import org.openide.filesystems.FileStateInvalidException;

import java.io.File;

import org.netbeans.api.queries.CollocationQuery;

import org.netbeans.junit.NbTestCase;

import org.netbeans.modules.versioning.spi.testvcs.TestVCS;

import org.netbeans.modules.versioning.spi.testvcs.TestVCSCollocationQuery;

import org.openide.util.test.MockLookup;

/**

 * Versioning SPI unit tests of VCSVisibilityQuery.

 * 

 * @author Tomas Stupka

 */

public class VCSCollocationQueryTest extends NbTestCase {

    public VCSCollocationQueryTest(String testName) {

        super(testName);

    }

    protected void setUp() throws Exception {

        MockLookup.setLayersAndInstances();

        File userdir = new File(getWorkDir() + "userdir");

        userdir.mkdirs();

        System.setProperty("netbeans.user", userdir.getAbsolutePath());

        super.setUp();

    }

    public void testFindRootExisting() throws FileStateInvalidException, IOException, Exception {

        File folder = new File(getWorkDir(), TestVCS.VERSIONED_FOLDER_SUFFIX);

        folder.mkdirs();

        File file = new File(folder, "somefile");

        file.createNewFile();

        assertRoot(folder, file);

    }

    public void testFindRootNotExisting() throws FileStateInvalidException, IOException, Exception {

        File folder = new File(getWorkDir(), TestVCS.VERSIONED_FOLDER_SUFFIX);

        folder.mkdirs();

        File file = new File(folder, "somefile");

        assertRoot(folder, file);

    }

    private void assertRoot(File root, File file) {

        assertEquals(root, CollocationQuery.findRoot(file));

    }

    public void testAreCollocatedExisting() throws FileStateInvalidException, IOException, Exception {

        File folder = new File(getWorkDir(), TestVCS.VERSIONED_FOLDER_SUFFIX);

        folder.mkdirs();

        File file1 = new File(folder, "file2" + TestVCSCollocationQuery.COLLOCATED_FILENAME_SUFFIX);

        file1.createNewFile();

        File file2 = new File(folder, "file1" + TestVCSCollocationQuery.COLLOCATED_FILENAME_SUFFIX);

        file2.createNewFile();

        assertCollocated(true, file1, file2);

    }

    public void testAreCollocatedNotExisting() throws FileStateInvalidException, IOException, Exception {

        File folder = new File(getWorkDir(), TestVCS.VERSIONED_FOLDER_SUFFIX);

        folder.mkdirs();

        File file1 = new File(folder, "file2" + TestVCSCollocationQuery.COLLOCATED_FILENAME_SUFFIX);

        file1.createNewFile();

        File file2 = new File(folder, "file1" + TestVCSCollocationQuery.COLLOCATED_FILENAME_SUFFIX);

        file2.createNewFile();

        assertCollocated(true, file1, file2);

    }

    public void testNotCollocatedExisting() throws FileStateInvalidException, IOException, Exception {

        File folder = new File(getWorkDir(), TestVCS.VERSIONED_FOLDER_SUFFIX);

        folder.mkdirs();

        File file1 = new File(folder, "file1");

        file1.createNewFile();

        File file2 = new File(folder, "file2");

        file2.createNewFile();

        assertCollocated(false, file1, file2);

    }

    public void testNotCollocatedNotExisting() throws FileStateInvalidException, IOException, Exception {

        File folder = new File(getWorkDir(), TestVCS.VERSIONED_FOLDER_SUFFIX);

        folder.mkdirs();

        File file1 = new File(folder, "file1");

        file1.createNewFile();

        File file2 = new File(folder, "file2");

        file2.createNewFile();

        assertCollocated(false, file1, file2);

    }

    void assertCollocated(boolean expected, File file1, File file2) {

        if(expected) {

            assertTrue(CollocationQuery.areCollocated(file1, file2));

        } else {

            assertFalse(CollocationQuery.areCollocated(file1, file2));

        }

    }

}

import org.netbeans.spi.queries.CollocationQueryImplementation;

    private TestVCSCollocationQuery vcq;

        vcq = new TestVCSCollocationQuery();

    @Override

    public CollocationQueryImplementation getCollocationQueryImplementation() {

        return vcq;

}

/*

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

 *

 * Copyright 2012 Oracle and/or its affiliates. All rights reserved.

 *

 * Oracle and Java are registered trademarks of Oracle and/or its affiliates.

 * Other names may be trademarks of their respective owners.

 *

 * 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.  Oracle designates this

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

 * by Oracle 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 2012 Sun Microsystems, Inc.

 */

package org.netbeans.modules.versioning.spi.testvcs;

import java.io.File;

import org.netbeans.spi.queries.CollocationQueryImplementation;

/**

 *

 * @author tomas

 */

public class TestVCSCollocationQuery implements CollocationQueryImplementation {

    public static String COLLOCATED_FILENAME_SUFFIX = "_iscollocated";

    @Override

    public boolean areCollocated(File file1, File file2) {

        String name1 = file1.getName();

        String name2 = file2.getName();

        return name1.endsWith(COLLOCATED_FILENAME_SUFFIX) && name2.endsWith(COLLOCATED_FILENAME_SUFFIX);

    }

    @Override

    public File findRoot(File file) {

        return TestVCS.getInstance().getTopmostManagedAncestor(file);

    }

}