JGitVersionAttributeView.java

/*
 * Copyright 2015 Red Hat, Inc. and/or its affiliates.
 *
 * 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 org.uberfire.java.nio.fs.jgit;

import org.uberfire.java.nio.IOException;
import org.uberfire.java.nio.base.version.VersionAttributeView;
import org.uberfire.java.nio.base.version.VersionAttributes;
import org.uberfire.java.nio.file.attribute.BasicFileAttributeView;
import org.uberfire.java.nio.fs.jgit.util.JGitUtil;

/**
 *
 */
public class JGitVersionAttributeView extends VersionAttributeView<JGitPathImpl> {

    private VersionAttributes attrs = null;

    public JGitVersionAttributeView(final JGitPathImpl path) {
        super(path);
    }

    @Override
    public VersionAttributes readAttributes() throws IOException {
        if (attrs == null) {
            attrs = JGitUtil.buildVersionAttributes(path.getFileSystem(),
                                                    path.getRefTree(),
                                                    path.getPath());
        }
        return attrs;
    }

    @Override
    public Class<? extends BasicFileAttributeView>[] viewTypes() {
        return new Class[]{VersionAttributeView.class, JGitVersionAttributeView.class};
    }
}