Bug 132515 Expression like "Toltal.rank(Tolta.ave(row[a]),ture,Null,1)" is return an error
Description: Add an expression like "Toltal.rank(Tolta.ave(row[a]),ture,Null,1)" is return an error.The nesting "Toltal" seem not to be work. Step to reproduce: 1.new a datasource and dataset 2.drag the dataset to layout veiw for a table 3.set a group on the table 4.Insert a data into the group header with the expression e.g. "Toltal.rank(Tolta.ave(row[a]),ture,Null,1)" Actual result: An error was thrown out Expected result: It should work correctly in order to support some requirments
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/QueryExecutor.java
/**
	 * Create a parameter hint based on Parameter definition and value
	 * @param paramDefn
	 * @param evaValue
	 */
	private ParameterHint createParameterHint( IParameterDefinition paramDefn,
			Object paramValue ) throws DataException
	{
	    assert paramValue != null;
        
		ParameterHint parameterHint = new ParameterHint( paramDefn.getName(), 
				paramDefn.isInputMode(),
				paramDefn.isOutputMode() );
		if( paramDefn.getPosition() > 0)
			parameterHint.setPosition( paramDefn.getPosition( ) );
		
		Class dataTypeClass = DataType.getClass( paramDefn.getType( ) );
		if ( dataTypeClass == DataType.AnyType.class
				|| dataTypeClass == Boolean.class || dataTypeClass == Blob.class )
		{
			dataTypeClass = String.class;
		}
		parameterHint.setDataType( dataTypeClass );
		parameterHint.setIsInputOptional( paramDefn.isInputOptional( ) );
		parameterHint.setDefaultInputValue( 
				getParameterValueString( dataTypeClass, paramValue) );
		parameterHint.setIsNullable( paramDefn.isNullable() );
		return parameterHint;
	}
}