Bug 152443 Support boolean type in data set
Support boolean type in data set. It'll cause some data transform issue with absence of boolean type.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/odaconsumer/PreparedStatement.java
private double getDouble( String paramName ) throws DataException
	{
		String methodName = "getDouble";	
		sm_logger.entering( sm_className, methodName, paramName );
		
		double ret = 0;
		
		if( ! supportsNamedParameter() )
		{
			int paramIndex = getIndexFromParamHints( paramName );
			if( paramIndex > 0 )
				ret = doGetDouble( paramIndex );
		}
		else
		{
			ret = doGetDouble( paramName );
		}
		
		if( sm_logger.isLoggingEnterExitLevel() )
			sm_logger.exiting( sm_className, methodName, new Double( ret ) );	
		return ret;
	}
	
	private String getString( String paramName ) throws DataException
	{
		String methodName = "getString";
		sm_logger.entering( sm_className, methodName, paramName );
		
		String ret = null;