Source Code Cross Referenced for AggregateJXPathBindingBuilder.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:         * AggregateJXPathBindingBuilder provides a helper class for the Factory
24:         * implemented in {@link JXPathBindingManager} that helps construct the
25:         * actual {@link AggregateJXPathBinding} out of the configuration in the
26:         * provided configElement which looks like:
27:         * <pre><code>
28:         * &lt;wb:aggregate id="<i>widget-id</i>" path="<i>xpath-expression</i>"&gt;
29:         *   &lt;wb:field id="<i>sub-widget-id</i>" path="<i>relative-xpath</i>" />
30:         * &lt;/wb:aggregate&gt;
31:         * </code></pre>
32:         *
33:         * @version CVS $Id: AggregateJXPathBindingBuilder.java 433543 2006-08-22 06:22:54Z crossley $
34:         */
35:        public class AggregateJXPathBindingBuilder extends
36:                JXPathBindingBuilderBase {
37:
38:            public JXPathBindingBase buildBinding(Element bindingElm,
39:                    JXPathBindingManager.Assistant assistant)
40:                    throws BindingException {
41:                try {
42:                    CommonAttributes commonAtts = JXPathBindingBuilderBase
43:                            .getCommonAttributes(bindingElm);
44:                    String xpath = DomHelper.getAttribute(bindingElm, "path");
45:                    String widgetId = DomHelper.getAttribute(bindingElm, "id");
46:
47:                    JXPathBindingBase[] childBindings = assistant
48:                            .makeChildBindings(bindingElm);
49:
50:                    AggregateJXPathBinding aggregateBinding = new AggregateJXPathBinding(
51:                            commonAtts, widgetId, xpath, childBindings);
52:                    return aggregateBinding;
53:                } catch (BindingException e) {
54:                    throw e;
55:                } catch (Exception e) {
56:                    throw new BindingException(
57:                            "Error building aggregate field binding defined at "
58:                                    + DomHelper.getLocation(bindingElm), e);
59:                }
60:            }
61:        }