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    1   /**
    2    *  Licensed to the Apache Software Foundation (ASF) under one or more
    3    *  contributor license agreements.  See the NOTICE file distributed with
    4    *  this work for additional information regarding copyright ownership.
    5    *  The ASF licenses this file to You under the Apache License, Version 2.0
    6    *  (the "License"); you may not use this file except in compliance with
    7    *  the License.  You may obtain a copy of the License at
    8    *
    9    *     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   
   18   package org.apache.geronimo.deployment.plugin;
   19   
   20   import javax.enterprise.deploy.model.DDBean;
   21   import javax.enterprise.deploy.model.XpathEvent;
   22   import javax.enterprise.deploy.spi.DConfigBean;
   23   import javax.enterprise.deploy.spi.exceptions.BeanNotFoundException;
   24   import javax.enterprise.deploy.spi.exceptions.ConfigurationException;
   25   
   26   import org.apache.xmlbeans.XmlObject;
   27   
   28   /**
   29    *
   30    *
   31    * @version $Rev: 697438 $ $Date: 2008-09-20 17:45:30 -0700 (Sat, 20 Sep 2008) $
   32    */
   33   public abstract class DConfigBeanSupport extends XmlBeanSupport implements DConfigBean {
   34       private DDBean ddBean;
   35   
   36       public DConfigBeanSupport(DDBean ddBean, XmlObject xmlObject) {
   37           super(xmlObject);
   38           this.ddBean = ddBean;
   39       }
   40   
   41       protected void setParent(DDBean ddBean, XmlObject xmlObject) {
   42           this.ddBean = ddBean;
   43           setXmlObject(xmlObject);
   44       }
   45   
   46       public DDBean getDDBean() {
   47           return ddBean;
   48       }
   49   
   50       public DConfigBean getDConfigBean(DDBean bean) throws ConfigurationException {
   51           throw new ConfigurationException("No DConfigBean matching DDBean "+bean);
   52       }
   53   
   54       public String[] getXpaths() {
   55           return null;
   56       }
   57   
   58       public void removeDConfigBean(DConfigBean bean) throws BeanNotFoundException {
   59           throw new BeanNotFoundException("No children");
   60       }
   61   
   62       public void notifyDDChange(XpathEvent event) {
   63       }
   64   
   65       protected String[] getXPathsWithPrefix(String prefix, String[][] xpathSegments) {
   66           String[] result = new String[xpathSegments.length];
   67           for (int i = 0; i < xpathSegments.length; i++) {
   68               String[] xpathSegmentArray = xpathSegments[i];
   69               StringBuffer xpath = new StringBuffer();
   70               for (int j = 0; j < xpathSegmentArray.length; j++) {
   71                   String segment = xpathSegmentArray[j];
   72                   if (prefix != null) {
   73                       xpath.append(prefix).append(":");
   74                   }
   75                   xpath.append(segment);
   76                   if (j < xpathSegmentArray.length -1) {
   77                       xpath.append("/");
   78                   }
   79               }
   80               result[i] = xpath.toString();
   81           }
   82           return result;
   83       }
   84   
   85       protected String[] getXPathsFromNamespace(String uri, String[][] xpathSegments) {
   86           String[] attributeNames = ddBean.getRoot().getAttributeNames();
   87           for (int i = 0; i < attributeNames.length; i++) {
   88               String attributeName = attributeNames[i];
   89               if (attributeName.startsWith("xmlns")) {
   90                   if (ddBean.getRoot().getAttributeValue(attributeName).equals(uri)) {
   91                       if (attributeName.equals("xmlns")) {
   92                           return getXPathsWithPrefix(null , xpathSegments);
   93                       }
   94                       return getXPathsWithPrefix(attributeName.substring(6), xpathSegments);
   95                   }
   96               }
   97           }
   98           //we can't determine the namespace from looking at attributes, since the namespace is not an attribute.
   99           //try assuming that the ddbeans strip namespaces from their xpath handing.
  100           return getXPathsWithPrefix(null , xpathSegments);
  101       }
  102   
  103       /**
  104        * Each entry in the first array is an XPath.
  105        * Each entry in the enclosed array is a component of that XPath (slashes omitted).
  106        * so {{"foo","bar"},{"baz","foo"}} would represent "foo/bar" and "baz/foo"
  107        */ 
  108       protected String[] getXPathsForJ2ee_1_4(String[][] xpathSegments) {
  109           return getXPathsFromNamespace("http://java.sun.com/xml/ns/j2ee", xpathSegments);
  110       }
  111   }

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