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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/javax/xml/validation/SchemaFactory.java | |
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Diffstat (limited to 'libjava/classpath/javax/xml/validation/SchemaFactory.java')
-rw-r--r-- | libjava/classpath/javax/xml/validation/SchemaFactory.java | 264 |
1 files changed, 264 insertions, 0 deletions
diff --git a/libjava/classpath/javax/xml/validation/SchemaFactory.java b/libjava/classpath/javax/xml/validation/SchemaFactory.java new file mode 100644 index 000000000..1c099bbe2 --- /dev/null +++ b/libjava/classpath/javax/xml/validation/SchemaFactory.java @@ -0,0 +1,264 @@ +/* SchemaFactory.java -- + Copyright (C) 2004, 2005, 2006 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package javax.xml.validation; + +import java.io.BufferedReader; +import java.io.File; +import java.io.FileInputStream; +import java.io.InputStream; +import java.io.InputStreamReader; +import java.io.IOException; +import java.net.URL; +import java.util.Properties; +import javax.xml.XMLConstants; +import javax.xml.transform.Source; +import javax.xml.transform.stream.StreamSource; +import org.w3c.dom.ls.LSResourceResolver; +import org.xml.sax.ErrorHandler; +import org.xml.sax.SAXException; +import org.xml.sax.SAXNotRecognizedException; +import org.xml.sax.SAXNotSupportedException; + +/** + * Factory for obtaining schemata. + * + * @author Chris Burdess (dog@gnu.org) + * @since 1.5 + */ +public abstract class SchemaFactory +{ + protected SchemaFactory() + { + } + + /** + * Returns an implementation of <code>SchemaFactory</code> that supports + * the specified schema language. + * @param schemaLanguage the URI of a schema language (see + * <code>XMLConstants</code>) + */ + public static final SchemaFactory newInstance(String schemaLanguage) + { + ClassLoader loader = Thread.currentThread().getContextClassLoader(); + if (loader == null) + { + loader = SchemaFactory.class.getClassLoader(); + } + final String factoryClassName = "javax.xml.validation.SchemaFactory"; + String className = null; + int count = 0; + do + { + className = getFactoryClassName(loader, schemaLanguage, count++); + if (className != null) + { + try + { + Class<?> t = (loader != null) ? loader.loadClass(className) : + Class.forName(className); + return (SchemaFactory) t.newInstance(); + } + catch (Exception e) + { + // Ignore any errors and continue algorithm. + // This method doesn't have a means of propagating + // class instantiation errors. + className = null; + } + } + } + while (className == null && count < 2); + try + { + String serviceKey = "/META-INF/services/" + factoryClassName; + InputStream in = (loader != null) ? + loader.getResourceAsStream(serviceKey) : + SchemaFactory.class.getResourceAsStream(serviceKey); + if (in != null) + { + BufferedReader r = + new BufferedReader(new InputStreamReader(in)); + try + { + for (String line = r.readLine(); line != null; + line = r.readLine()) + { + Class<?> t = (loader != null) ? loader.loadClass(className) : + Class.forName(className); + SchemaFactory ret = (SchemaFactory) t.newInstance(); + if (ret.isSchemaLanguageSupported(schemaLanguage)) + return ret; + } + } + catch (Exception e) + { + // Fall through. See above. + } + finally + { + r.close(); + } + } + } + catch (IOException e) + { + } + // Default schema factories for Classpath + if (XMLConstants.W3C_XML_SCHEMA_NS_URI.equals(schemaLanguage)) + return new gnu.xml.validation.xmlschema.XMLSchemaSchemaFactory(); + if (XMLConstants.RELAXNG_NS_URI.equals(schemaLanguage)) + return new gnu.xml.validation.relaxng.RELAXNGSchemaFactory(); + throw new IllegalArgumentException(schemaLanguage); + } + + private static String getFactoryClassName(ClassLoader loader, + String schemaLanguage, int attempt) + { + final String factoryClassName = "javax.xml.validation.SchemaFactory"; + final String propertyName = factoryClassName + ":" + schemaLanguage; + switch (attempt) + { + case 0: + return System.getProperty(propertyName); + case 1: + try + { + File file = new File(System.getProperty("java.home")); + file = new File(file, "lib"); + file = new File(file, "jaxp.properties"); + InputStream in = new FileInputStream(file); + Properties props = new Properties(); + props.load(in); + in.close(); + return props.getProperty(propertyName); + } + catch (IOException e) + { + return null; + } + default: + return null; + } + } + + /** + * Indicates whether the specified schema language is supported. + * @param schemaLanguage the URI of a schema language (see + * <code>XMLConstants</code>) + */ + public abstract boolean isSchemaLanguageSupported(String schemaLanguage); + + public boolean getFeature(String name) + throws SAXNotRecognizedException, SAXNotSupportedException + { + throw new SAXNotRecognizedException(name); + } + + public void setFeature(String name, boolean value) + throws SAXNotRecognizedException, SAXNotSupportedException + { + throw new SAXNotRecognizedException(name); + } + + public Object getProperty(String name) + throws SAXNotRecognizedException, SAXNotSupportedException + { + throw new SAXNotRecognizedException(name); + } + + public void setProperty(String name, Object value) + throws SAXNotRecognizedException, SAXNotSupportedException + { + throw new SAXNotRecognizedException(name); + } + + public abstract ErrorHandler getErrorHandler(); + + public abstract void setErrorHandler(ErrorHandler errorHandler); + + public abstract LSResourceResolver getResourceResolver(); + + public abstract void setResourceResolver(LSResourceResolver resourceResolver); + + /** + * Returns a schema based on the specified source resource. + * @param schema the source resource + */ + public Schema newSchema(Source schema) + throws SAXException + { + return newSchema(new Source[] { schema }); + } + + /** + * Returns a schema based on the specified source file. + * @param schema the source resource + */ + public Schema newSchema(File schema) + throws SAXException + { + return newSchema(new StreamSource(schema)); + } + + /** + * Returns a schema based on the specified URL. + * @param schema the source resource + */ + public Schema newSchema(URL schema) + throws SAXException + { + return newSchema(new StreamSource(schema.toString())); + } + + /** + * Parses the specified sources, and combine them into a single schema. + * The exact procedure and semantics of this depends on the schema + * language. + * @param schemata the schema resources to load + */ + public abstract Schema newSchema(Source[] schemata) + throws SAXException; + + /** + * Creates a special schema. + * The exact semantics of this depends on the schema language. + */ + public abstract Schema newSchema() + throws SAXException; + +} |