/* 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
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General Public License for more details.

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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
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permission to link this library with independent modules to produce an
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package javax.xml.validation;

import java.io.File;
import java.net.URL;
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)
  {
    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);
  }

  /**
   * 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;
  
}