Hello,
I have two pipelines that I want to execute on a single file. This file
contains a list of document Ids, something like:
<items>
<item>doc1.xml</item>
<item>doc2.xml</item>
...
</items>
The following pipeline executes 'q1.xqy' which iterates through these documents
and does something for each file:
<?xml-stylesheet href="/cpf/pipelines.css" type="text/css"?>
<pipeline xsi:schemaLocation="http://marklogic.com/cpf/pipelines pipelines.xsd"
xmlns="http://marklogic.com/cpf/pipelines";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";>
<pipeline-name>Query1</pipeline-name>
<success-action>
<module>/MarkLogic/cpf/actions/success-action.xqy</module>
</success-action>
<failure-action>
<module>/MarkLogic/cpf/actions/failure-action.xqy</module>
</failure-action>
<state-transition>
<state>http://marklogic.com/states/initial</state>
<on-success>http://marklogic.com/states/intermediate</on-success>
<on-failure>http://marklogic.com/states/error</on-failure>
<execute>
<condition>
<module>/MarkLogic/cpf/actions/namespace-condition.xqy</module>
<options xmlns="/MarkLogic/cpf/actions/namespace-condition.xqy">
<root-element>items</root-element>
<namespace/>
</options>
</condition>
<action>
<module>q1.xqy</module>
</action>
</execute>
</state-transition>
</pipeline>
This part works fine. I now have a second pipeline, called q2.xqy, which I want
to execute only after q1.xqy has completed. It looks like:
<?xml-stylesheet href="/cpf/pipelines.css" type="text/css"?>
<pipeline xsi:schemaLocation="http://marklogic.com/cpf/pipelines pipelines.xsd"
xmlns="http://marklogic.com/cpf/pipelines";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";>
<pipeline-name>Query 2</pipeline-name>
<success-action>
<module>/MarkLogic/cpf/actions/success-action.xqy</module>
</success-action>
<failure-action>
<module>/MarkLogic/cpf/actions/failure-action.xqy</module>
</failure-action>
<state-transition>
<state>http://marklogic.com/states/intermediate</state>
<on-success>http://marklogic.com/states/updated</on-success>
<on-failure>http://marklogic.com/states/error</on-failure>
<execute>
<condition>
<module>/MarkLogic/cpf/actions/namespace-condition.xqy</module>
<options xmlns="/MarkLogic/cpf/actions/namespace-condition.xqy">
<root-element>items</root-element>
<namespace/>
</options>
</condition>
<action>
<module>q2.xqy</module>
</action>
</execute>
</state-transition>
</pipeline>
Note it has the same condition as the first query, since the file it acts on
has not changed. I am trying to use state transitions to manage the order in
which each pipeline is executed. So the first pipeline should set the state to
'intermediate' at which point the second pipeline should be executed and
finally set the state to updated. Currently, the second pipeline does run, but
the state never moves to 'updated'.
I'm not sure this is even what I want, since I need the second pipeline to wait
for the first one to complete. Does the state change immediately or wait until
the query completes? If the former, then perhaps I should be using processing
status rather than state?
How do I create a second pipeline that only runs after the first one completes?
David Fox
Vocabulary Developer
The Associated Press
[email protected]
212.621.5491
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