src/java.xml/share/classes/javax/xml/xpath/XPathFactory.java

Print this page


   1 /*
   2  * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any


  77      * <p>Get a new {@code XPathFactory} instance using the default object model,
  78      * {@link #DEFAULT_OBJECT_MODEL_URI},
  79      * the W3C DOM.</p>
  80      *
  81      * <p>This method is functionally equivalent to:</p>
  82      * <pre>
  83      *   newInstance(DEFAULT_OBJECT_MODEL_URI)
  84      * </pre>
  85      *
  86      * <p>Since the implementation for the W3C DOM is always available, this method will never fail.</p>
  87      *
  88      * @return Instance of an {@code XPathFactory}.
  89      *
  90      * @throws RuntimeException When there is a failure in creating an
  91      *   {@code XPathFactory} for the default object model.
  92      */
  93     public static XPathFactory newInstance() {
  94 
  95         try {
  96                 return newInstance(DEFAULT_OBJECT_MODEL_URI);
  97         } catch (XPathFactoryConfigurationException xpathFactoryConfigurationException) {
  98                 throw new RuntimeException(
  99                         "XPathFactory#newInstance() failed to create an XPathFactory for the default object model: "
 100                         + DEFAULT_OBJECT_MODEL_URI
 101                         + " with the XPathFactoryConfigurationException: "
 102                         + xpathFactoryConfigurationException.toString()
 103                 );
 104         }
 105     }
 106 
 107     /**
 108     * <p>Get a new {@code XPathFactory} instance using the specified object model.</p>
 109     *
 110     * <p>To find a {@code XPathFactory} object,
 111     * this method looks the following places in the following order where "the class loader" refers to the context class loader:</p>
 112     * <ol>
 113     *   <li>
 114     *     <p>
 115     *     If the system property {@link #DEFAULT_PROPERTY_NAME} + ":uri" is present,
 116     *     where uri is the parameter to this method, then its value is read as a class name.
 117     *     The method will try to create a new instance of this class by using the class loader,
 118     *     and returns it if it is successfully created.
 119     *   </li>
 120     *   <li>
 121     *     <p>
 122     *     Use the configuration file "jaxp.properties". The file is in standard


   1 /*
   2  * Copyright (c) 2003, 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any


  77      * <p>Get a new {@code XPathFactory} instance using the default object model,
  78      * {@link #DEFAULT_OBJECT_MODEL_URI},
  79      * the W3C DOM.</p>
  80      *
  81      * <p>This method is functionally equivalent to:</p>
  82      * <pre>
  83      *   newInstance(DEFAULT_OBJECT_MODEL_URI)
  84      * </pre>
  85      *
  86      * <p>Since the implementation for the W3C DOM is always available, this method will never fail.</p>
  87      *
  88      * @return Instance of an {@code XPathFactory}.
  89      *
  90      * @throws RuntimeException When there is a failure in creating an
  91      *   {@code XPathFactory} for the default object model.
  92      */
  93     public static XPathFactory newInstance() {
  94 
  95         try {
  96             return newInstance(DEFAULT_OBJECT_MODEL_URI);
  97         } catch (XPathFactoryConfigurationException e) {
  98             throw new RuntimeException(
  99                     "XPathFactory#newInstance() failed to create an XPathFactory for the default object model: "
 100                     + DEFAULT_OBJECT_MODEL_URI
 101                     + " with the XPathFactoryConfigurationException: "
 102                     + e.getMessage(), e
 103             );
 104         }
 105     }
 106 
 107     /**
 108     * <p>Get a new {@code XPathFactory} instance using the specified object model.</p>
 109     *
 110     * <p>To find a {@code XPathFactory} object,
 111     * this method looks the following places in the following order where "the class loader" refers to the context class loader:</p>
 112     * <ol>
 113     *   <li>
 114     *     <p>
 115     *     If the system property {@link #DEFAULT_PROPERTY_NAME} + ":uri" is present,
 116     *     where uri is the parameter to this method, then its value is read as a class name.
 117     *     The method will try to create a new instance of this class by using the class loader,
 118     *     and returns it if it is successfully created.
 119     *   </li>
 120     *   <li>
 121     *     <p>
 122     *     Use the configuration file "jaxp.properties". The file is in standard