Services

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Services
Introduction
Form Runner supports implementing services using XPL (the XML pipeline language), associated with an application or a specific form.
NOTE: This is an advanced feature which requires programming.
Mapping an XPL file to a service URL
Assuming the following:
App name: acme
Form name: order
If you place a file called foo.xpl under
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WEB-INF/resources/form/acme/service/
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A service called foo is made available the following URL:
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/fr/service/custom/acme/foo
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`
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Similarly, if you place a file called bar.xpl under
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WEB-INF/resources/form/acme/order/service/
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A service called bar is made available the following URL:
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/fr/service/custom/acme/order/bar
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`
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Implementation of the service
The XPL has the following interface:
instance input: contains the XML data posted to the service URL
data output: XML data produced by the service
The following example XPL just echoes the incoming data:
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<p:config
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    xmlns:p="http://www.orbeon.com/oxf/pipeline"
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    xmlns:oxf="http://www.orbeon.com/oxf/processors">
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​
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    <p:param type="input" name="instance"/>
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    <p:param type="output" name="data"/>
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​
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    <p:processor name="oxf:identity">
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        <p:input name="data" href="#instance"/>
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        <p:output name="data" ref="data"/>
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    </p:processor>
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​
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</p:config>
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Contents
Introduction
Mapping an XPL file to a service URL
Implementation of the service