TDAXmlDataStreamer

From RemObjects Software

This is a Data Abstract Architecture entry
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Overview

TDAXmlDataStreamer implements a data streamer that uses an easily parsable XML format for streaming data across the network.

While slower and less efficient than the TDABinDataStreamer, the XML Streamer is helpful in scenarios where non-Data Abstract clients need to access data from a server (or vice versa), as the nature of XML allows the data to easily be parsed on different platforms, or converted to different data layouts using XSLT.

File

uDAXMLAdapter

Declaration

TDAXmlDataStreamer = class(TDADataStreamer);

Hierarchy

• TComponent
  • TDADataStreamer
    • TDAXmlDataStreamer

Properties

Property	Type	Description
DocumentName	String	Sets the name of the XML root node to be used for the streamed data ('XMLData' by default).
Options	TDAXmlDataStreamerOptions	Configures general options for streaming. Available options are: When present, XSLT Transformations will be applied data packets.
ReadXSLT	IXMLDocument	Defines an XSLT script will be used to process received data before it is being read. This allows for XML data in incompatible formats to be processed, by providing an XSLT that converts this data to the proper structure.
RowOptions	TDAXMLRowOptions	Sets options to influence the steaming of data rows. Available options are: When present, Blob values will be compressed using ZLib before being streamed into the XML.
SchemaOptions	TDAXMLSchemaOptions	Specifies options to influence the steaming of schema info. Available options are: When present, schema properties with empty values will be streamed as attributes with an empty value; else they will be omitted from the XML altogether.
SkipNull	Boolean	Toggles whether null values should be skipped when streaming data as XML (true, the default), or not. If set to true, no XML node will be written to represent fields with null values; if set to false, a node with an empty value will be written.
WriteXSLT	IXMLDocument	Specifies an XSLT script will be used to process written data before it is being sent across the network. This allows for XML data to be sent out in non-Data Abstract formats, by providing an XSLT that performs the necessary conversion before sending the data.

See Also

• TDADataStreamer
• TDABinDataStreamer
• TDARemoteDataAdapter
• TDataAbstractService
• Lists
  • Class List (Data Abstract for Delphi)
  • Interface List (Data Abstract for Delphi)
  • Enum List (Data Abstract for Delphi)
  • Data Types (Data Abstract)
  • File Types (Data Abstract)

Product: RemObjects Data Abstract
Current version: Data Abstract 'Vinci' (5.0)

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