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Sample Configuration File:

<?xml version="1.0" encoding="UTF-8"?>
Code Block
languagehtml/xml
<config>
 <var-def name='weatherInfo'>
  <xslt>
   <xml>
    <html-to-xml>
      <http method='get' url='http://weather.yahoo.com/'/>
    </html-to-xml>
   </xml>
   <stylesheet>
    <file path="/media/data/web/template.xsl"/>
   </stylesheet>
  </xslt>
 </var-def>
</config>

Sample XSLT File:

Code Block
languagehtml/xml
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" omit-xml-declaration="yes" indent="yes"/>
<xsl:template match="/">
  <WeatherInfo>
   <xsl:for-each select="//div[@id='myLocContainer']/ul/li">
     <Weather>
      <Region><xsl:value-of select="a/@title"/></Region>
      <Temp><xsl:value-of select="em"/></Temp>
     </Weather>
   </xsl:for-each>
  </WeatherInfo>
</xsl:template>
</xsl:stylesheet>

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2. The "Create Data Service" page appears. Fill in the fields and click "Next" . The Data Service name is mandatory. In this example, "Yahoo Weather Forecasts" is used to extract weather information.

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Info:
Info

For more information on Advanced Configurations in creating data servicesadvanced configurations, refer to section Transaction Handling   Advanced Data Service Configurations.

3. The "Data Sources" page appears. Click on the "Add New Data Source" link and add your Data Source details. Select the data source type as "Web Data Source ".

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You can either save the configuration to an xml and provide the file path, or can enter as an inline configuration. In example 1, we provide the sample configuration mentioned above as a file path.

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Example 2:

In example 2, we use an inline configuration.

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In this example, we have used "Grouped By Element" , "Row Name" and "Row namespace" as follows.

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Click the "Add New Output Mapping" button as shown in the screenshot above to create how the output looks like. Once you have entered the output mapping details, click "Main Configuration" and then the "Save" button as follows:

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For information on adding validations to your input mappings in the query, if any, refer to section Input Validators. Also, detailed information on writing queries can be found in section Data Service Queries. Once the query details are added click "Save ". You have added one query to your data service configuration. To continue, click "Next ".

5. The "Operations" page appear s. Click the "Add new operation" link to c reate an operation. Select a query to be executed when this operation is called and click Save once done. For example,

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6.  The Data Service configuration is done. Click "Finish" . ( You can continue to add resources by clicking the "Next" button if you like)

7. You will be navigated to the "Deployed services" page .

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From here, you can manage your data service. For instructions, refer to section Service Management. For a demonstration on service-enabling a web resources, refer to Web Resource Sample.

Excerpt
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Instructions to create data services using a Web resource (yahoo weather) in WSO2 products.