| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| // $Id: SAXParserFactory.java 884950 2009-11-27 18:46:18Z mrglavas $ |
| |
| package javax.xml.parsers; |
| |
| import javax.xml.validation.Schema; |
| |
| import org.xml.sax.SAXException; |
| import org.xml.sax.SAXNotRecognizedException; |
| import org.xml.sax.SAXNotSupportedException; |
| |
| /** |
| * Defines a factory API that enables applications to configure and |
| * obtain a SAX based parser to parse XML documents. |
| * |
| * @author <a href="Jeff.Suttor@Sun.com">Jeff Suttor</a> |
| * @version $Revision: 884950 $, $Date: 2009-11-27 13:46:18 -0500 (Fri, 27 Nov 2009) $ |
| */ |
| public abstract class SAXParserFactory { |
| |
| /** |
| * <p>Should Parsers be validating?</p> |
| */ |
| private boolean validating = false; |
| |
| /** |
| * <p>Should Parsers be namespace aware?</p> |
| */ |
| private boolean namespaceAware = false; |
| |
| /** |
| * <p>Protected constructor to force use of {@link #newInstance()}.</p> |
| */ |
| protected SAXParserFactory () { |
| |
| } |
| |
| /** |
| * Obtain a new instance of a <code>SAXParserFactory</code>. This |
| * static method creates a new factory instance |
| * This method uses the following ordered lookup procedure to determine |
| * the <code>SAXParserFactory</code> implementation class to |
| * load: |
| * <ul> |
| * <li> |
| * Use the <code>javax.xml.parsers.SAXParserFactory</code> system |
| * property. |
| * </li> |
| * <li> |
| * Use the properties file "lib/jaxp.properties" in the JRE directory. |
| * This configuration file is in standard <code>java.util.Properties |
| * </code> format and contains the fully qualified name of the |
| * implementation class with the key being the system property defined |
| * above. |
| * |
| * The jaxp.properties file is read only once by the JAXP implementation |
| * and it's values are then cached for future use. If the file does not exist |
| * when the first attempt is made to read from it, no further attempts are |
| * made to check for its existence. It is not possible to change the value |
| * of any property in jaxp.properties after it has been read for the first time. |
| * </li> |
| * <li> |
| * Use the Services API (as detailed in the JAR specification), if |
| * available, to determine the classname. The Services API will look |
| * for a classname in the file |
| * <code>META-INF/services/javax.xml.parsers.SAXParserFactory</code> |
| * in jars available to the runtime. |
| * </li> |
| * <li> |
| * Platform default <code>SAXParserFactory</code> instance. |
| * </li> |
| * </ul> |
| * |
| * Once an application has obtained a reference to a |
| * <code>SAXParserFactory</code> it can use the factory to |
| * configure and obtain parser instances. |
| * |
| * |
| * |
| * <h2>Tip for Trouble-shooting</h2> |
| * <p>Setting the <code>jaxp.debug</code> system property will cause |
| * this method to print a lot of debug messages |
| * to <tt>System.err</tt> about what it is doing and where it is looking at.</p> |
| * |
| * <p> If you have problems loading {@link SAXParser}s, try:</p> |
| * <pre> |
| * java -Djaxp.debug=1 YourProgram .... |
| * </pre> |
| * |
| * |
| * @return A new instance of a SAXParserFactory. |
| * |
| * @exception FactoryConfigurationError if the implementation is |
| * not available or cannot be instantiated. |
| */ |
| |
| public static SAXParserFactory newInstance() { |
| try { |
| return (SAXParserFactory) FactoryFinder.find( |
| /* The default property name according to the JAXP spec */ |
| "javax.xml.parsers.SAXParserFactory", |
| /* The fallback implementation class name */ |
| "com.sun.org.apache.xerces.internal.jaxp.SAXParserFactoryImpl"); |
| } |
| catch (FactoryFinder.ConfigurationError e) { |
| throw new FactoryConfigurationError(e.getException(), e.getMessage()); |
| } |
| } |
| |
| /** |
| * @return A new instance of a SAXParserFactory. |
| * |
| * @exception FactoryConfigurationError if the implementation is |
| * not available or cannot be instantiated. |
| */ |
| public static SAXParserFactory newInstance(String factoryClassName, |
| ClassLoader classLoader) { |
| if (factoryClassName == null) { |
| throw new FactoryConfigurationError("factoryClassName cannot be null."); |
| } |
| if (classLoader == null) { |
| classLoader = SecuritySupport.getContextClassLoader(); |
| } |
| try { |
| return (SAXParserFactory) FactoryFinder.newInstance(factoryClassName, classLoader, false); |
| } |
| catch (FactoryFinder.ConfigurationError e) { |
| throw new FactoryConfigurationError(e.getException(), e.getMessage()); |
| } |
| } |
| |
| /** |
| * <p>Creates a new instance of a SAXParser using the currently |
| * configured factory parameters.</p> |
| * |
| * @return A new instance of a SAXParser. |
| * |
| * @exception ParserConfigurationException if a parser cannot |
| * be created which satisfies the requested configuration. |
| * @exception SAXException for SAX errors. |
| */ |
| |
| public abstract SAXParser newSAXParser() |
| throws ParserConfigurationException, SAXException; |
| |
| |
| /** |
| * Specifies that the parser produced by this code will |
| * provide support for XML namespaces. By default the value of this is set |
| * to <code>false</code>. |
| * |
| * @param awareness true if the parser produced by this code will |
| * provide support for XML namespaces; false otherwise. |
| */ |
| |
| public void setNamespaceAware(boolean awareness) { |
| this.namespaceAware = awareness; |
| } |
| |
| /** |
| * Specifies that the parser produced by this code will |
| * validate documents as they are parsed. By default the value of this is |
| * set to <code>false</code>. |
| * |
| * <p> |
| * Note that "the validation" here means |
| * <a href="http://www.w3.org/TR/REC-xml#proc-types">a validating |
| * parser</a> as defined in the XML recommendation. |
| * In other words, it essentially just controls the DTD validation. |
| * (except the legacy two properties defined in JAXP 1.2. |
| * See <a href="#validationCompatibility">here</a> for more details.) |
| * </p> |
| * |
| * <p> |
| * To use modern schema languages such as W3C XML Schema or |
| * RELAX NG instead of DTD, you can configure your parser to be |
| * a non-validating parser by leaving the {@link #setValidating(boolean)} |
| * method <tt>false</tt>, then use the {@link #setSchema(Schema)} |
| * method to associate a schema to a parser. |
| * </p> |
| * |
| * @param validating true if the parser produced by this code will |
| * validate documents as they are parsed; false otherwise. |
| */ |
| |
| public void setValidating(boolean validating) { |
| this.validating = validating; |
| } |
| |
| /** |
| * Indicates whether or not the factory is configured to produce |
| * parsers which are namespace aware. |
| * |
| * @return true if the factory is configured to produce |
| * parsers which are namespace aware; false otherwise. |
| */ |
| |
| public boolean isNamespaceAware() { |
| return namespaceAware; |
| } |
| |
| /** |
| * Indicates whether or not the factory is configured to produce |
| * parsers which validate the XML content during parse. |
| * |
| * @return true if the factory is configured to produce parsers which validate |
| * the XML content during parse; false otherwise. |
| */ |
| |
| public boolean isValidating() { |
| return validating; |
| } |
| |
| /** |
| * |
| * <p>Sets the particular feature in the underlying implementation of |
| * org.xml.sax.XMLReader. |
| * A list of the core features and properties can be found at |
| * <a href="http://www.saxproject.org/">http://www.saxproject.org/</a></p> |
| * |
| * <p>All implementations are required to support the {@link javax.xml.XMLConstants#FEATURE_SECURE_PROCESSING} feature. |
| * When the feature is</p> |
| * <ul> |
| * <li> |
| * <code>true</code>: the implementation will limit XML processing to conform to implementation limits. |
| * Examples include entity expansion limits and XML Schema constructs that would consume large amounts of resources. |
| * If XML processing is limited for security reasons, it will be reported via a call to the registered |
| * {@link org.xml.sax.ErrorHandler#fatalError(SAXParseException exception)}. |
| * See {@link SAXParser} <code>parse</code> methods for handler specification. |
| * </li> |
| * <li> |
| * When the feature is <code>false</code>, the implementation will processing XML according to the XML specifications without |
| * regard to possible implementation limits. |
| * </li> |
| * </ul> |
| * |
| * @param name The name of the feature to be set. |
| * @param value The value of the feature to be set. |
| * |
| * @exception ParserConfigurationException if a parser cannot |
| * be created which satisfies the requested configuration. |
| * @exception SAXNotRecognizedException When the underlying XMLReader does |
| * not recognize the property name. |
| * @exception SAXNotSupportedException When the underlying XMLReader |
| * recognizes the property name but doesn't support the |
| * property. |
| * @throws NullPointerException If the <code>name</code> parameter is null. |
| * |
| * @see org.xml.sax.XMLReader#setFeature |
| */ |
| public abstract void setFeature(String name, boolean value) |
| throws ParserConfigurationException, SAXNotRecognizedException, |
| SAXNotSupportedException; |
| |
| /** |
| * |
| * <p>Returns the particular property requested for in the underlying |
| * implementation of org.xml.sax.XMLReader.</p> |
| * |
| * @param name The name of the property to be retrieved. |
| * |
| * @return Value of the requested property. |
| * |
| * @exception ParserConfigurationException if a parser cannot be created which satisfies the requested configuration. |
| * @exception SAXNotRecognizedException When the underlying XMLReader does not recognize the property name. |
| * @exception SAXNotSupportedException When the underlying XMLReader recognizes the property name but doesn't support the property. |
| * |
| * @see org.xml.sax.XMLReader#getProperty |
| */ |
| public abstract boolean getFeature(String name) |
| throws ParserConfigurationException, SAXNotRecognizedException, |
| SAXNotSupportedException; |
| |
| /** |
| * Gets the {@link Schema} object specified through |
| * the {@link #setSchema(Schema schema)} method. |
| * |
| * |
| * @throws UnsupportedOperationException |
| * For backward compatibility, when implementations for |
| * earlier versions of JAXP is used, this exception will be |
| * thrown. |
| * |
| * @return |
| * the {@link Schema} object that was last set through |
| * the {@link #setSchema(Schema)} method, or null |
| * if the method was not invoked since a {@link SAXParserFactory} |
| * is created. |
| * |
| * @since 1.5 |
| */ |
| public Schema getSchema() { |
| throw new UnsupportedOperationException( |
| "This parser does not support specification \"" |
| + this.getClass().getPackage().getSpecificationTitle() |
| + "\" version \"" |
| + this.getClass().getPackage().getSpecificationVersion() |
| + "\"" |
| ); |
| } |
| |
| /** |
| * <p>Set the {@link Schema} to be used by parsers created |
| * from this factory.</p> |
| * |
| * <p>When a {@link Schema} is non-null, a parser will use a validator |
| * created from it to validate documents before it passes information |
| * down to the application.</p> |
| * |
| * <p>When warnings/errors/fatal errors are found by the validator, the parser must |
| * handle them as if those errors were found by the parser itself. |
| * In other words, if the user-specified {@link org.xml.sax.ErrorHandler} |
| * is set, it must receive those errors, and if not, they must be |
| * treated according to the implementation specific |
| * default error handling rules. |
| * |
| * <p>A validator may modify the SAX event stream (for example by |
| * adding default values that were missing in documents), and a parser |
| * is responsible to make sure that the application will receive |
| * those modified event stream.</p> |
| * |
| * <p>Initially, <code>null</code> is set as the {@link Schema}.</p> |
| * |
| * <p>This processing will take effect even if |
| * the {@link #isValidating()} method returns <code>false</code>. |
| * |
| * <p>It is an error to use |
| * the <code>http://java.sun.com/xml/jaxp/properties/schemaSource</code> |
| * property and/or the <code>http://java.sun.com/xml/jaxp/properties/schemaLanguage</code> |
| * property in conjunction with a non-null {@link Schema} object. |
| * Such configuration will cause a {@link SAXException} |
| * exception when those properties are set on a {@link SAXParser}.</p> |
| * |
| * <h4>Note for implementors</h4> |
| * <p> |
| * A parser must be able to work with any {@link Schema} |
| * implementation. However, parsers and schemas are allowed |
| * to use implementation-specific custom mechanisms |
| * as long as they yield the result described in the specification. |
| * </p> |
| * |
| * @param schema <code>Schema</code> to use, <code>null</code> to remove a schema. |
| * |
| * @throws UnsupportedOperationException |
| * For backward compatibility, when implementations for |
| * earlier versions of JAXP is used, this exception will be |
| * thrown. |
| * |
| * @since 1.5 |
| */ |
| public void setSchema(Schema schema) { |
| throw new UnsupportedOperationException( |
| "This parser does not support specification \"" |
| + this.getClass().getPackage().getSpecificationTitle() |
| + "\" version \"" |
| + this.getClass().getPackage().getSpecificationVersion() |
| + "\"" |
| ); |
| } |
| |
| /** |
| * <p>Set state of XInclude processing.</p> |
| * |
| * <p>If XInclude markup is found in the document instance, should it be |
| * processed as specified in <a href="http://www.w3.org/TR/xinclude/"> |
| * XML Inclusions (XInclude) Version 1.0</a>.</p> |
| * |
| * <p>XInclude processing defaults to <code>false</code>.</p> |
| * |
| * @param state Set XInclude processing to <code>true</code> or |
| * <code>false</code> |
| * |
| * @throws UnsupportedOperationException |
| * For backward compatibility, when implementations for |
| * earlier versions of JAXP is used, this exception will be |
| * thrown. |
| * |
| * @since 1.5 |
| */ |
| public void setXIncludeAware(final boolean state) { |
| throw new UnsupportedOperationException( |
| "This parser does not support specification \"" |
| + this.getClass().getPackage().getSpecificationTitle() |
| + "\" version \"" |
| + this.getClass().getPackage().getSpecificationVersion() |
| + "\"" |
| ); |
| } |
| |
| /** |
| * <p>Get state of XInclude processing.</p> |
| * |
| * @return current state of XInclude processing |
| * |
| * @throws UnsupportedOperationException |
| * For backward compatibility, when implementations for |
| * earlier versions of JAXP is used, this exception will be |
| * thrown. |
| * |
| * @since 1.5 |
| */ |
| public boolean isXIncludeAware() { |
| throw new UnsupportedOperationException( |
| "This parser does not support specification \"" |
| + this.getClass().getPackage().getSpecificationTitle() |
| + "\" version \"" |
| + this.getClass().getPackage().getSpecificationVersion() |
| + "\"" |
| ); |
| } |
| } |
| |
