001/*
002 * (C) Copyright 2017 Nuxeo (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     Kevin Leturc
018 */
019package org.nuxeo.ecm.core.opencmis.impl.server.versioning;
020
021import org.nuxeo.ecm.core.api.DocumentModel;
022import org.nuxeo.ecm.core.versioning.VersioningPolicyFilter;
023
024/**
025 * Automatic versioning filter to filter out document from CMIS (automatic versioning is currently not supported by
026 * CMIS).
027 * <p />
028 * This filter has an enabled state which is a {@link ThreadLocal}, it returns {@link Boolean#TRUE} only for thread
029 * from CMIS.
030 *
031 * @since 9.1
032 */
033public class CMISVersioningFilter implements VersioningPolicyFilter {
034
035    protected static final ThreadLocal<Boolean> ENABLED = new ThreadLocal<Boolean>() {
036
037        @Override
038        protected Boolean initialValue() {
039            return Boolean.FALSE;
040        }
041
042    };
043
044    @Override
045    public boolean test(DocumentModel previousDocument, DocumentModel currentDocument) {
046        return ENABLED.get().booleanValue();
047    }
048
049    /**
050     * Enables the filter for current thread, which will disable the automatic versioning.
051     */
052    public static void enable() {
053        ENABLED.set(Boolean.TRUE);
054    }
055
056    /**
057     * Disables the filter for current thread.
058     */
059    public static void disable() {
060        ENABLED.set(Boolean.FALSE);
061    }
062
063}