001/* 
002 * (C) Copyright 2006-2011 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 *     bstefanescu
018 *
019 * $Id$
020 */
021
022package org.nuxeo.ecm.platform.rendering.fm.extensions;
023
024import java.util.List;
025
026import org.nuxeo.ecm.core.api.IdRef;
027import org.nuxeo.ecm.core.api.PathRef;
028
029import freemarker.template.SimpleScalar;
030import freemarker.template.TemplateMethodModelEx;
031import freemarker.template.TemplateModelException;
032
033/**
034 * @author <a href="mailto:[email protected]">Bogdan Stefanescu</a>
035 */
036public class DocRefMethod implements TemplateMethodModelEx {
037
038    public Object exec(List arguments) throws TemplateModelException {
039        if (arguments.size() != 1) {
040            throw new TemplateModelException("Invalid number of arguments for docRef(id) method");
041        }
042        String value = null;
043        SimpleScalar scalar = (SimpleScalar) arguments.get(0);
044        if (scalar != null) {
045            value = scalar.getAsString();
046        } else {
047            throw new TemplateModelException("the argument is not defined");
048        }
049
050        if (value.startsWith("/")) {
051            return new PathRef(value);
052        } else {
053            return new IdRef(value);
054        }
055    }
056
057}