/*******************************************************************************
 * Copyright (c) 2004 Actuate Corporation.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *  Actuate Corporation  - initial API and implementation
 *******************************************************************************/

package org.eclipse.birt.report.model.parser;

import java.util.List;

import org.eclipse.birt.report.model.core.DesignElement;
import org.eclipse.birt.report.model.core.Module;
import org.eclipse.birt.report.model.elements.SimpleDataSet;
import org.eclipse.birt.report.model.elements.TemplateDataSet;
import org.eclipse.birt.report.model.elements.interfaces.IDataSetModel;
import org.eclipse.birt.report.model.util.ModelUtil;
import org.eclipse.birt.report.model.util.VersionUtil;
import org.eclipse.birt.report.model.util.XMLParserException;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;

/**
 * This class parses a template data set.
 */

public class TemplateDataSetState extends ReportElementState
{

	/**
	 * The template data set being created.
	 */

	protected TemplateDataSet element = null;

	/**
	 * Constructs the template data set state with the design parser handler.
	 * 
	 * @param handler
	 *            the design file parser handler
	 */

	public TemplateDataSetState( ModuleParserHandler handler )
	{
		super( handler, handler.getModule( ), Module.DATA_SET_SLOT );
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.parser.DesignParseState#getElement()
	 */

	public DesignElement getElement( )
	{
		return element;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.util.AbstractParseState#parseAttrs(org.xml.sax.Attributes)
	 */

	public void parseAttrs( Attributes attrs ) throws XMLParserException
	{
		element = new TemplateDataSet( );

		initElement( attrs, true );
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.util.AbstractParseState#end()
	 */

	public void end( ) throws SAXException
	{
		DesignElement refTemplateParam = element
				.getTemplateParameterElement( handler.getModule( ) );
		if ( refTemplateParam != null )
		{
			DesignElement defaultElement = element.getDefaultElement( handler
					.getModule( ) );
			if ( !( defaultElement instanceof SimpleDataSet ) )
			{
				handler
						.getErrorHandler( )
						.semanticError(
								new DesignParserException(
										new String[]{
												element.getIdentifier( ),
												refTemplateParam
														.getIdentifier( )},
										DesignParserException.DESIGN_EXCEPTION_INCONSISTENT_TEMPLATE_ELEMENT_TYPE ) );
			}
			else
			{
				if ( handler.versionNumber < VersionUtil.VERSION_3_2_2 )
				{
					List dataSetColumns = (List) element.getProperty(
							handler.module, IDataSetModel.RESULT_SET_PROP );
					Object dataSetHints = element.getProperty( handler.module,
							IDataSetModel.RESULT_SET_HINTS_PROP );
					if ( dataSetHints == null && dataSetColumns != null )
						element
								.setProperty(
										IDataSetModel.RESULT_SET_HINTS_PROP,
										ModelUtil
												.copyValue(
														element
																.getPropertyDefn( IDataSetModel.RESULT_SET_HINTS_PROP ),
														dataSetColumns ) );
				}
			}
		}
		else
		{
			// fire an error
		}
		super.end( );
	}

}
