Polycom PDS 2000 manual Data Source Tutorial

Data Source Tutorial Appendix B: Data Parser

<ParsingRule Type="TrimFromStart" Source="Equation" Result="Variable">

<SearchText>=</SearchText>

</ParsingRule>

<ParsingRule Type="TrimToEnd" Source="Equation" Result="Value"> <SearchText>=</SearchText>

</ParsingRule>

</DataItem>

A <DataItem> element should contain one or more index-aware parsing rules. All of a DataItem's parsing rules are applied on each iteration. However, if a given DataItem parsing rule itself contains child rules, those child rules are not passed any index information for the current iteration. That is, child rules are never treated as index-aware. For an example of this, see the Data Source Tutorial below.

Data Source Tutorial

This section walks through the construction of a Data Source definition that extracts weather data from the U.S. National Weather Service web site.

This tutorial assumes the reader is familiar with HTML syntax.

NOTE:This tutorial was written using the U.S. Weather Service web site. The U.S. Weather Service may have changed their web site since writing, and so there is no guarantee that this tutorial will still work now. The tutorial is presented purely to illustrate Data Parser concepts.

In this tutorial we'll parse the weather data for New York City as obtained from the URL http://www.srh.noaa.gov/zipcity.php?inputstring=10005.

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