Hiererchical Data Source

<das:hiererchical-data-source> element represents a sequence of elements with the same name and on the same level in a XML type data source.

The following XML will be described in a processing job as a tree of hierarchical data sources:

<?xml version="1.0" encoding="utf-8"?>

<books>

<title>Lord Of the Rings.</title>

<info>

<country>United Kingdom</country>

<author>J. R. R. Tolkien</author>

</info>

</book>

<title>Principia Mathematica</title>

<info>

<author>Bertrand Russell</author>

<author>Alfred North Whitehead</author>

</info>

</book>

<title>Black Holes, White Dwarfs and Neutron Stars: The Physics of Compact Objects</title>

<info>

<author>Stuart L. Shapiro</author>

<author>Saul A. Teukolsky</author>

</info>

</book>

</books>

The hierarchical data source tree generated by the previous XML will look as follows:

<das:hierarchical-data-source id="booksds" source="src1" name="books">

<das:hierarchical-data-source id="bookds" name="book">

<das:field id="fld1" name="id"/>

<das:hierarchical-data-source id="titleds" name="title">

<das:field id="fld2" name="text()"/>

</das:hierarchical-data-source>

<das:hierarchical-data-source id="infods" name="info">

<das:hierarchical-data-source id="authords" name="author">

<das:field id="fld3" name="text()"/>

</das:hierarchical-data-source>

<das:hierarchical-data-source id="countryds" name="country">

<das:field id="fld4" name="text()"/>

</das:hierarchical-data-source>

Attributes:

id - unique identifier of this resource in the current processing job.

name - the name of the XML elements iterated by the hierarchical-data-source.

Children Elements:

<das:field> - describes the attributes of the iterated hierarchical-data-source elements.

<das:hierarchical-data-source> - this name can also represent the children data source elements.