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java.lang.Objectcom.espertech.esper.epl.join.plan.TwoStreamQueryPlanBuilder
public class TwoStreamQueryPlanBuilder
Builds a query plan for the simple 2-stream scenario.
Constructor Summary | |
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TwoStreamQueryPlanBuilder()
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Method Summary | |
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static QueryPlan |
build(EventType[] typesPerStream,
QueryGraph queryGraph,
OuterJoinType optionalOuterJoinType)
Build query plan. |
protected static Class[] |
getCoercionTypes(EventType[] typesPerStream,
int lookupStream,
int indexedStream,
String[] keyProps,
String[] indexProps)
Returns null if no coercion is required, or an array of classes for use in coercing the lookup keys and index keys into a common type. |
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 TwoStreamQueryPlanBuilder()
Method Detail |
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public static QueryPlan build(EventType[] typesPerStream, QueryGraph queryGraph, OuterJoinType optionalOuterJoinType)
queryGraph
- - navigability infooptionalOuterJoinType
- - outer join type, null if not an outer jointypesPerStream
- - event types for each stream
protected static Class[] getCoercionTypes(EventType[] typesPerStream, int lookupStream, int indexedStream, String[] keyProps, String[] indexProps)
typesPerStream
- is the event types for each streamlookupStream
- is the stream looked up fromindexedStream
- is the indexed streamkeyProps
- is the properties to use to look upindexProps
- is the properties to index on
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