/*
 * @(#)$Id: DocumentBuilderFactoryImpl.java,v 1.2 2001/11/19 19:57:42 kk122374 Exp $
 *
 * Copyright 2001 Sun Microsystems, Inc. All Rights Reserved.
 * 
 * This software is the proprietary information of Sun Microsystems, Inc.  
 * Use is subject to license terms.
 * 
 */
package com.sun.msv.verifier.jaxp;

import java.io.File;
import java.io.InputStream;
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.iso_relax.verifier.VerifierFactory;
//import org.iso_relax.verifier.VerifierConfigurationException;
import org.iso_relax.verifier.Schema;
import com.sun.msv.verifier.jarv.TheFactoryImpl;

/**
 * DocumentBuilderFactory implementation that supports validation.
 * 
 * <p>
 * This class uses another DocumentBuilderFactory implementation and 
 * adds the validation capability to it.
 * 
 * @author <a href="mailto:kohsuke.kawaguchi@sun.com">Kohsuke KAWAGUCHI</a>
 */
public class DocumentBuilderFactoryImpl extends DocumentBuilderFactory {
	
	/**
	 * Wrapped DocumentBuilderFactory that does everything else.
	 */
	private final DocumentBuilderFactory core;

	/**
	 * JARV VerifierFactory implementation, which will be used to parse schemas.
	 */
	private final VerifierFactory jarvFactory;

	/**
	 * The validation will be performed against this schema object.
	 */
	private Schema schema;
	
	/**
	 * Creates a new instance by using the default DocumentBuilderFactory implementation
	 * as the underlying parser. This constructor does not set any schema.
	 */
	public DocumentBuilderFactoryImpl() {
		this( DocumentBuilderFactory.newInstance() );
	}
	
	/**
	 * Creates a new instance by specifying the underlying SAXParserFactory
	 * implementation. This constructor does not set any schema.
	 */
	public DocumentBuilderFactoryImpl( DocumentBuilderFactory _factory ) {
		this(_factory,null);
	}
	
	public DocumentBuilderFactoryImpl( DocumentBuilderFactory _factory, Schema _schema ) {
		this.core = _factory;
		this.jarvFactory = new TheFactoryImpl();
		this.schema = _schema;
	}
	
	
	
	public Object getAttribute( String name ) {
        if( name.equals(com.sun.msv.verifier.jarv.Const.PANIC_MODE_FEATURE) )
            try {
                return jarvFactory.isFeature(name)?Boolean.TRUE:Boolean.FALSE;
            } catch( SAXException e ) {
                throw new IllegalArgumentException(e.getMessage());
            }
		return core.getAttribute(name);
	}
	public void setAttribute( String name, Object value ) {
        if( name.equals(com.sun.msv.verifier.jarv.Const.PANIC_MODE_FEATURE) )
            try {
                jarvFactory.setFeature(name,((Boolean)value).booleanValue());
            } catch( SAXException e ) {
                throw new IllegalArgumentException(e.getMessage());
            }
        
		if(Const.SCHEMA_PROPNAME.equals(name)) {
			try {
				if(value instanceof String) {
					schema = jarvFactory.compileSchema( (String)value );
					return;
				}
				if(value instanceof File) {
					schema = jarvFactory.compileSchema( (File)value );
					return;
				}
				if(value instanceof InputSource) {
					schema = jarvFactory.compileSchema( (InputSource)value );
					return;
				}
				if(value instanceof InputStream) {
					schema = jarvFactory.compileSchema( (InputStream)value );
					return;
				}
				if(value instanceof Schema) {
					schema = (Schema)value;
					return;
				}
				throw new IllegalArgumentException("unrecognized value type: "+value.getClass().getName() );
			} catch( Exception e ) {
				throw new IllegalArgumentException(e.toString());
			}
		}
		core.setAttribute(name,value);
	}
	
	
	
	public boolean isCoalescing() {
		return core.isCoalescing();
	}
	public boolean isExpandEntityReference() {
		return core.isExpandEntityReferences();
	}
	public boolean isIgnoringComments() {
		return core.isIgnoringComments();
	}
	public boolean isIgnoringElementContentWhitespace() {
		return core.isIgnoringElementContentWhitespace();
	}
	public boolean isNamespaceAware() {
		return core.isNamespaceAware();
	}
	public boolean isValidating() {
		return core.isValidating();
	}
	
	public DocumentBuilder newDocumentBuilder() throws ParserConfigurationException {
		if(schema==null)		return core.newDocumentBuilder();
		
		return new DocumentBuilderImpl(core.newDocumentBuilder(),schema);
	}
	
	
	public void setCoalescing( boolean newVal ) {
		core.setCoalescing(newVal);
	}
	public void setExpandEntityReference( boolean newVal ) {
		core.setExpandEntityReferences(newVal);
	}
	public void setIgnoringComments( boolean newVal ) {
		core.setIgnoringComments(newVal);
	}
	public void setIgnoringElementContentWhitespace( boolean newVal ) {
		core.setIgnoringElementContentWhitespace(newVal);
	}
	public void setNamespaceAware( boolean newVal ) {
		core.setNamespaceAware(newVal);
	}
	public void setValidating( boolean newVal ) {
		core.setValidating(newVal);
	}
	public boolean getFeature( String name ) 
          throws ParserConfigurationException {
		return core.getFeature(name);
	}
	public void setFeature( String name, boolean newVal ) 
	  throws ParserConfigurationException {
		core.setFeature(name, newVal);
	}
	
}