OpenEdge ABL API Reference

OpenEdge.DataAdmin.DataSource.FieldChildDataSource

Save PDF

Save PDF

Namespace:

OpenEdge.DataAdmin.DataSource

Type: Class

FieldChildDataSource

Parent Classes:

Progress.Lang.Object

OpenEdge.DataAdmin.Binding.Query.DataAdminQuery

OpenEdge.DataAdmin.DataSource.DBQuery

OpenEdge.DataAdmin.DataSource.DataSource

OpenEdge.DataAdmin.DataSource.FieldDataSource

OpenEdge.DataAdmin.DataSource.FieldChildDataSource

Inherits:

OpenEdge.DataAdmin.DataSource.FieldDataSource

	/* Copyright (c) 2013 by progress Software Corporation.
	/*
	/* all rights reserved. no part of this program or document
	/* may be reproduced in any form or by any means without
	/* permission in writing from progress Software Corporation.
Purpose:	data source for field as child of index-field
Author(s):	hdaniels
Created:	Jul 2013
Notes:	extended to have _field first.
	(probably not important at all performance wise...)

Method Summary

	Options	Name	Purpose
		AfterFieldRow (dataset-handle)
		CHARACTER ColumnSource (character)	/* undo the GetMappingHack in the query expression (blind assumption that the first one is the tablename - defined by dataset relation)*/
		CHARACTER GetMappingHack ()	/* The dataset gives error if the paret join is mapped across multiple source tables when this is a child relation, because the fill-string generation requires that all fields in the parent relation is mapped to the source, so temporarily map the Tablename to the FieldName The columnSource override below fixes this back again so the query returns correct data */
		PrepareBuffer (handle)	/* override to set replaced false in case prepare is called again (not very common... ) */

Constructor Summary

	Options	Name	Purpose
		FieldChildDataSource ()	/* child of index - this is already filtered by parent so DatabaseInfo:FileExpression is not really necessary */

Method Detail

Top

Top

	/* undo the GetMappingHack in the query expression
	(blind assumption that the first one is the tablename - defined by dataset relation)

Top

	/* The dataset gives error if the paret join is mapped across multiple source tables when
	this is a child relation, because the fill-string generation requires that all fields in the parent
	relation is mapped to the source, so temporarily map the Tablename to the FieldName
	The columnSource override below fixes this back again so the query returns correct data

Returns	CHARACTER

Top

/* override to set replaced false in case prepare is called again (not very common... )

Constructor Detail

Top

/* child of index - this is already filtered by parent so DatabaseInfo:FileExpression is not really necessary