001/*
002 * (C) Copyright 2006-2008 Nuxeo SA (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 *     Stephane Lacoin (Nuxeo EP Software Engineer)
018 */
019
020package org.nuxeo.ecm.platform.audit.service;
021
022import java.io.Serializable;
023import java.util.Map;
024
025import org.nuxeo.ecm.platform.audit.api.ExtendedInfo;
026import org.nuxeo.ecm.platform.audit.impl.ExtendedInfoImpl;
027import org.nuxeo.ecm.platform.audit.service.extension.ExtendedInfoDescriptor;
028import org.nuxeo.ecm.platform.el.ExpressionEvaluator;
029
030public class ExtendedInfoInjector {
031
032    protected final ExpressionEvaluator evaluator;
033
034    public ExtendedInfoInjector(ExpressionEvaluator evaluator) {
035        this.evaluator = evaluator;
036    }
037
038    public void injectExtendedInfo(Map<String, ExtendedInfo> info, ExtendedInfoDescriptor descriptor,
039            ExtendedInfoContext context) {
040        Serializable value = evaluator.evaluateExpression(context, descriptor.getExpression(), Serializable.class);
041        if (value == null) {
042            return;
043        }
044        String key = descriptor.getKey();
045        info.put(key, ExtendedInfoImpl.createExtendedInfo(value));
046    }
047
048}