XPathXmlStringWriter Properties

The XPathXmlWriter component uses an XPath-style syntax to format XML documents from published Event Stream Processor stream data.

The formatter formats XML tags and attributes. To use this writer, ensure the sink specifies this property:

DOStringWriter = com.sybase.esp.adapter.xml.xpath.XmlStringWriter

Specify nested tags by separating the tag names by / :

/env/body/tag
<env>
<body>
<tag>xyz</tag>
</body>
</env>

Attributes are specified by [@attributeName].

/env/body/tag[@attr]
<env>
<body>
<tag attr=’xyz’/>
</body>
</env>

By default, the formatter creates collections. For example, a new nested tag is created for each occurrence of a tag name:

XPath1=/env/body/tag
XPath2=/env/body/tag
<env>
<body>
<tag>xyz</tag>
</body>
<body>
<tag>abc</tag>
</body>
</env>

If tags are added within a nesting, use an index operator to specify the position in the collection:

XPath1=/env/body[1]/tag
XPath2=/env/body[1]/tag
<env>
<body>
<tag>xyz</tag>
<tag>abc</tag>
</body>
</env>

XML content encoding for this component is iso-8859-1.

Property	Description
`Type++`	(Required) Name of the Event Stream Processor stream to be exported.
`.XPath`	(Required) The XPath–style description of the top-level tags for this table. /env/body <env/> <body/>
`.AttName++`	(Required) Name of a field within the `Type` (stream).
`.XPath`	(Required) The XPath–style description of the XML tag or attribute to be formatted. `Typen` is the table name and `AttNamen` is the field name specifying the source of the data to insert into the tag or attribute. If the description specifies a tag, the field is output as tag data: /env/body/tag <env> <body> <tag>field data from Typen.AttNamex</tag> </body> </env> If the description specifies an attribute, the attribute value is set to the field data: /env/body/tag[@attr] <env> <body> <tag attr= field data from Typen.AttNamex /> </body> </env>