Package com.mckoi.database
Class QueryPlan.DistinctNode
java.lang.Object
com.mckoi.database.QueryPlan.SingleQueryPlanNode
com.mckoi.database.QueryPlan.DistinctNode
- All Implemented Interfaces:
QueryPlanNode
,Serializable
,Cloneable
- Enclosing class:
QueryPlan
The node for performing a distinct operation on the given columns of the
child node.
- See Also:
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Field Summary
Fields inherited from class com.mckoi.database.QueryPlan.SingleQueryPlanNode
child
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionclone()
Deep clone.evaluate
(QueryContext context) Evaluates the node and returns the result as a Table.Methods inherited from class com.mckoi.database.QueryPlan.SingleQueryPlanNode
child, debugString, discoverCorrelatedVariables, discoverTableNames
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Constructor Details
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DistinctNode
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Method Details
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evaluate
Description copied from interface:QueryPlanNode
Evaluates the node and returns the result as a Table. The VariableResolver resolves any outer variables -
clone
Description copied from class:QueryPlan.SingleQueryPlanNode
Deep clone.- Specified by:
clone
in interfaceQueryPlanNode
- Overrides:
clone
in classQueryPlan.SingleQueryPlanNode
- Throws:
CloneNotSupportedException
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titleString
- Overrides:
titleString
in classQueryPlan.SingleQueryPlanNode
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