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: * ContextJXPathBindingBuilder provides a helper class for the Factory
24: * implemented in {@link JXPathBindingManager} that helps construct the
25: * actual {@link ContextJXPathBinding} out of the configuration in the
26: * provided configElement which looks like:
27: * <pre><code>
28: * <wb:context path="<i>xpath expression</i>">
29: * <!-- in here come the nested child bindings on the sub-context -->
30: * </wb:context>
31: * </code></pre>
32: *
33: * @version CVS $Id: ContextJXPathBindingBuilder.java 433543 2006-08-22 06:22:54Z crossley $
34: */
35: public class ContextJXPathBindingBuilder extends
36: JXPathBindingBuilderBase {
37:
38: /**
39: * Creates an instance of ContextJXPathBinding with the configured
40: * path and nested child bindings from the declarations in the bindingElm
41: */
42: public JXPathBindingBase buildBinding(Element bindingElm,
43: JXPathBindingManager.Assistant assistant)
44: throws BindingException {
45:
46: try {
47: CommonAttributes commonAtts = JXPathBindingBuilderBase
48: .getCommonAttributes(bindingElm);
49: String xpath = DomHelper.getAttribute(bindingElm, "path");
50:
51: JXPathBindingBase[] childBindings = assistant
52: .makeChildBindings(bindingElm);
53:
54: ContextJXPathBinding contextBinding = new ContextJXPathBinding(
55: commonAtts, xpath, childBindings);
56: return contextBinding;
57: } catch (BindingException e) {
58: throw e;
59: } catch (Exception e) {
60: throw new BindingException(
61: "Error building context binding defined at "
62: + DomHelper.getLocation(bindingElm), e);
63: }
64: }
65: }
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