TempRepeaterJXPathBindingBuilder


1   /*
2    * Copyright 1999-2004 The Apache Software Foundation.
3    * 
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    * 
8    *      http://www.apache.org/licenses/LICENSE-2.0
9    * 
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.apache.cocoon.woody.binding;
17  
18  import org.apache.cocoon.woody.util.DomHelper;
19  import org.w3c.dom.Element  ;
20  
21  /**
22   * An experimental simple repeater binding that will replace
23   * (i.e. delete then re-add all) its content.
24   * Based on SimpleRepeater code.
25   * <pre>
26   * &lt;wb:temp-repeater
27   *   id="contacts"
28   *   parent-path="contacts"&gt;
29   *   &lt;<em>... child bindings ...</em>
30   * &lt;/wb:temp-repeater&gt;
31   * </pre>
32   *
33   * @author Timothy Larson
34   * @version CVS $Id: TempRepeaterJXPathBindingBuilder.java 30932 2004-07-29 17:35:38Z vgritsenko $
35   */
36  public class TempRepeaterJXPathBindingBuilder
37      extends JXPathBindingBuilderBase {
38  
39      public JXPathBindingBase buildBinding(Element   bindingElem,
40          JXPathBindingManager.Assistant assistant) throws BindingException {
41          try {
42              CommonAttributes commonAtts = JXPathBindingBuilderBase.getCommonAttributes(bindingElem);
43  
44              String   repeaterId = DomHelper.getAttribute(bindingElem, "id");
45              String   parentPath = DomHelper.getAttribute(bindingElem,
46                      "parent-path");
47              String   rowPath = DomHelper.getAttribute(bindingElem, "row-path");
48              String   rowPathInsert = DomHelper.getAttribute(bindingElem,
49                      "row-path-insert", rowPath);
50              boolean virtualRows = DomHelper.getAttributeAsBoolean(
51                      bindingElem, "virtual-rows", false);
52              boolean clearOnLoad = DomHelper.getAttributeAsBoolean(
53                      bindingElem, "clear-before-load", true);
54              boolean deleteIfEmpty = DomHelper.getAttributeAsBoolean(
55                      bindingElem, "delete-parent-if-empty", false);
56  
57              Element   childWrapElement = DomHelper.getChildElement(
58                      bindingElem, BindingManager.NAMESPACE, "on-bind");
59              JXPathBindingBase[] childBindings =
60                      assistant.makeChildBindings(childWrapElement);
61  
62              Element   insertWrapElement = DomHelper.getChildElement(bindingElem,
63                      BindingManager.NAMESPACE, "on-insert-row");
64              JXPathBindingBase[] insertBindings = null;
65              if (insertWrapElement != null) {
66                  insertBindings =
67                      assistant.makeChildBindings(insertWrapElement);
68              }
69              return new TempRepeaterJXPathBinding(commonAtts, repeaterId,
70                      parentPath, rowPath, rowPathInsert, virtualRows,
71                      clearOnLoad, deleteIfEmpty,
72                      new ComposedJXPathBindingBase(
73                              JXPathBindingBuilderBase.CommonAttributes.DEFAULT,
74                              childBindings),
75                      new ComposedJXPathBindingBase(
76                              JXPathBindingBuilderBase.CommonAttributes.DEFAULT,
77                              insertBindings));
78          } catch (BindingException e) {
79              throw e;
80          } catch (Exception   e) {
81              throw new BindingException(
82                      "Error building temp-repeater binding defined at " +
83                      DomHelper.getLocation(bindingElem), e);
84          }
85      }
86  }
87
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