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java.lang.Objectnet.esper.eql.join.exec.ExecNode
public abstract class ExecNode
Interface for an execution node that looks up events and builds a result set contributing to an overall join result set.
Constructor Summary | |
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ExecNode()
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Method Summary | |
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static String |
print(ExecNode execNode)
Print in readable format the execution strategy. |
abstract void |
print(IndentWriter writer)
Output the execution strategy. |
abstract void |
process(EventBean lookupEvent,
EventBean[] prefillPath,
List<EventBean[]> result)
Process single event using the prefill events to compile lookup results. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public ExecNode()
Method Detail |
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public abstract void process(EventBean lookupEvent, EventBean[] prefillPath, List<EventBean[]> result)
lookupEvent
- - event to look up for or query forprefillPath
- - set of events currently in the example tuple to serve
as a prototype for result rows.result
- is the list of tuples to add a result row topublic abstract void print(IndentWriter writer)
writer
- to output topublic static String print(ExecNode execNode)
execNode
- - execution node to print
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