001/*
002 * (C) Copyright 2006-2008 Nuxeo SAS (http://nuxeo.com/) and contributors.
003 *
004 * All rights reserved. This program and the accompanying materials
005 * are made available under the terms of the GNU Lesser General Public License
006 * (LGPL) version 2.1 which accompanies this distribution, and is available at
007 * http://www.gnu.org/licenses/lgpl.html
008 *
009 * This library is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * Contributors:
015 *     Stephane Lacoin (Nuxeo EP Software Engineer)
016 */
017
018package org.nuxeo.ecm.platform.audit.service;
019
020import java.io.Serializable;
021import java.util.Map;
022
023import org.nuxeo.ecm.platform.audit.api.ExtendedInfo;
024import org.nuxeo.ecm.platform.audit.impl.ExtendedInfoImpl;
025import org.nuxeo.ecm.platform.audit.service.extension.ExtendedInfoDescriptor;
026import org.nuxeo.ecm.platform.el.ExpressionEvaluator;
027
028public class ExtendedInfoInjector {
029
030    protected final ExpressionEvaluator evaluator;
031
032    public ExtendedInfoInjector(ExpressionEvaluator evaluator) {
033        this.evaluator = evaluator;
034    }
035
036    public void injectExtendedInfo(Map<String, ExtendedInfo> info, ExtendedInfoDescriptor descriptor,
037            ExtendedInfoContext context) {
038        Serializable value = evaluator.evaluateExpression(context, descriptor.getExpression(), Serializable.class);
039        if (value == null) {
040            return;
041        }
042        String key = descriptor.getKey();
043        info.put(key, ExtendedInfoImpl.createExtendedInfo(value));
044    }
045
046}