
/*******************************************************************************
 * Copyright (c) 2004, 2005 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.data.engine.olap.script;

import org.eclipse.birt.core.exception.BirtException;
import org.eclipse.birt.core.script.ScriptContext;
import org.eclipse.birt.data.engine.api.IBaseExpression;
import org.eclipse.birt.data.engine.api.IConditionalExpression;
import org.eclipse.birt.data.engine.api.IExpressionCollection;
import org.eclipse.birt.data.engine.api.IScriptExpression;
import org.eclipse.birt.data.engine.core.DataException;

/**
 * 
 */

public class OLAPExpressionCompiler
{
	/**
	 * 
	 * @param cx
	 * @throws DataException 
	 */
	public static void compile( ScriptContext cx, IBaseExpression expr ) throws DataException
	{
		if ( expr instanceof IConditionalExpression )
		{
			prepareScriptExpression( cx,
					( (IConditionalExpression) expr ).getExpression( ) );
			prepareScriptExpression( cx,
					( (IConditionalExpression) expr ).getOperand1( ) );
			prepareScriptExpression( cx,
					( (IConditionalExpression) expr ).getOperand2( ) );
		}
		else if ( expr instanceof IScriptExpression )
		{
			prepareScriptExpression( cx, (IScriptExpression) expr );
		}
	}

	/**
	 * 
	 * @param cx
	 * @param expr1
	 * @throws DataException 
	 */
	private static void prepareScriptExpression( ScriptContext cx,
			IBaseExpression expr1 ) throws DataException
	{
		try {
			
		if ( expr1 == null )
			return;
		if ( expr1 instanceof IScriptExpression )
		{
			String exprText = ( (IScriptExpression) expr1 ).getText( );
			if( expr1.getHandle( ) != null )
				expr1.setHandle( new OLAPExpressionHandler( cx.compile( expr1.getScriptId(), null, 0, exprText ) ) );
		}
		else if ( expr1 instanceof IExpressionCollection )
		{
			Object[] exprs =  ( (IExpressionCollection) expr1 ).getExpressions( ).toArray( );
			for ( int i = 0; i <exprs.length; i++ )
			{
				prepareScriptExpression( cx,
						(IBaseExpression)exprs[i] );
			}
		}
		}
		catch (BirtException e)
		{
			throw DataException.wrap( e );
		}
	}
}

@@ -2007,9 +2007,9 @@
 ( ) 
-!
+=
 = nu

Fix a little bug.[24664]