- 1. Scheduler
- 1.1. Starting a Task
- 1.2. Stopping a Task
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OPS User Guide
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Scheduler Processor
1. Scheduler
The OPS Scheduler allows applications to start and stop periodic
tasks. A OPS task is defined by a OPS processor and
its inputs. You can start or stop a task at any time. The
<grammar datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes"> <start> <ref name="config"/> </start> <define name="config"> <element name="config"> <interleave> <zeroOrMore> <element name="start-task"> <interleave> <element name="name"> <data type="string"/> </element> <choice> <element name="processor-name"> <data type="QName"/> </element> </choice> <element name="start-time"> <data type="string"/> </element> <element name="interval"> <data type="long"/> </element> <optional> <element name="synchronized"> <data type="boolean"/> </element> </optional> <zeroOrMore> <element name="input"> <attribute name="name"/> <choice> <attribute name="url"/> <ref name="anyElement"/> </choice> </element> </zeroOrMore> </interleave> </element> </zeroOrMore> <zeroOrMore> <element name="stop-task"> <element name="name"> <data type="string"/> </element> </element> </zeroOrMore> </interleave> </element> </define> <define name="anyElement"> <element> <anyName/> <zeroOrMore> <choice> <attribute> <anyName/> </attribute> <text/> <ref name="anyElement"/> </choice> </zeroOrMore> </element> </define> </grammar>
1.1. Starting a Task
You start a task by invoking the Scheduler processor with the
In most cases, the task is described in an XPL pipeline. The following example shows how to use the PipelineProcessor to launch a periodic task.
<p:processor name="oxf:scheduler" xmlns:p="http://www.orbeon.com/oxf/pipeline"> <p:input name="config"> <config> <start-task> <name>myTask</name> <start-time>now</start-time> <interval>10000</interval> <processor-name>oxf:pipeline</processor-name> <input name="config" url="oxf:/mytask.xpl"/> </start-task> </config> </p:input> </p:processor>
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