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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/javax/xml/validation/SchemaFactory.java
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+/* 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;
+
+}