Source Code Cross Referenced for UnionJXPathBindingBuilder.java in  » Content-Management-System » apache-lenya-2.0 » org » apache » cocoon » woody » binding » Java Source Code / Java DocumentationJava Source Code and Java Documentation

01:        /*
02:         * Licensed to the Apache Software Foundation (ASF) under one or more
03:         * contributor license agreements.  See the NOTICE file distributed with
04:         * this work for additional information regarding copyright ownership.
05:         * The ASF licenses this file to You under the Apache License, Version 2.0
06:         * (the "License"); you may not use this file except in compliance with
07:         * the License.  You may obtain a copy of the License at
08:         * 
09:         *      http://www.apache.org/licenses/LICENSE-2.0
10:         * 
11:         * Unless required by applicable law or agreed to in writing, software
12:         * distributed under the License is distributed on an "AS IS" BASIS,
13:         * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14:         * See the License for the specific language governing permissions and
15:         * limitations under the License.
16:         */
17:        package org.apache.cocoon.woody.binding;
18:
19:        import org.apache.cocoon.woody.util.DomHelper;
20:        import org.w3c.dom.Element;
21:
22:        /**
23:         * UnionJXPathBindingBuilder provides a helper class for the Factory
24:         * implemented in {@link JXPathBindingManager} that helps construct the
25:         * actual {@link UnionJXPathBinding} out of the configuration in the
26:         * provided configElement which looks like:
27:         * <pre><code>
28:         * &lt;wb:union id="<i>widget-id</i>" path="<i>xpath-expression</i>"
29:         *     direction="<i>load|save</i>" lenient="<i>true|false</i>" &gt;
30:         *   &lt;wb:field id="<i>sub-widget-id</i>" path="<i>relative-xpath</i>" />
31:         * &lt;/wb:union&gt;
32:         * </code></pre>
33:         *
34:         * @author Timothy Larson
35:         * @version CVS $Id: UnionJXPathBindingBuilder.java 433543 2006-08-22 06:22:54Z crossley $
36:         */
37:        public class UnionJXPathBindingBuilder extends JXPathBindingBuilderBase {
38:
39:            public JXPathBindingBase buildBinding(Element bindingElm,
40:                    JXPathBindingManager.Assistant assistant)
41:                    throws BindingException {
42:                try {
43:                    String widgetId = DomHelper.getAttribute(bindingElm, "id");
44:                    CommonAttributes commonAtts = JXPathBindingBuilderBase
45:                            .getCommonAttributes(bindingElm);
46:                    String xpath = DomHelper.getAttribute(bindingElm, "path");
47:
48:                    JXPathBindingBase[] childBindings = assistant
49:                            .makeChildBindings(bindingElm);
50:
51:                    UnionJXPathBinding unionBinding = new UnionJXPathBinding(
52:                            commonAtts, widgetId, xpath, childBindings);
53:                    return unionBinding;
54:                } catch (BindingException e) {
55:                    throw e;
56:                } catch (Exception e) {
57:                    throw new BindingException(
58:                            "Error building union binding defined at "
59:                                    + DomHelper.getLocation(bindingElm), e);
60:                }
61:            }
62:        }