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java.lang.Objectcom.mckoi.database.QueryPlan.SingleQueryPlanNode
com.mckoi.database.QueryPlan.ExhaustiveSelectNode
public static class QueryPlan.ExhaustiveSelectNode
The node for performing a exhaustive select operation on the child node. This node will iterate through the entire child result and all results that evaulate to true are included in the result.
NOTE: The Expression may have correlated sub-queries.
Field Summary |
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Fields inherited from class com.mckoi.database.QueryPlan.SingleQueryPlanNode |
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child |
Constructor Summary | |
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QueryPlan.ExhaustiveSelectNode(QueryPlanNode child,
Expression exp)
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Method Summary | |
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java.lang.Object |
clone()
Deep clone. |
java.util.ArrayList |
discoverCorrelatedVariables(int level,
java.util.ArrayList list)
Default implementation that discovers correlated variables for the given offset level. |
java.util.ArrayList |
discoverTableNames(java.util.ArrayList list)
Default implementation delegates responsibility to child. |
Table |
evaluate(QueryContext context)
Evaluates the node and returns the result as a Table. |
java.lang.String |
titleString()
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Methods inherited from class com.mckoi.database.QueryPlan.SingleQueryPlanNode |
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child, debugString |
Methods inherited from class java.lang.Object |
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equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public QueryPlan.ExhaustiveSelectNode(QueryPlanNode child, Expression exp)
Method Detail |
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public Table evaluate(QueryContext context)
QueryPlanNode
public java.util.ArrayList discoverTableNames(java.util.ArrayList list)
QueryPlan.SingleQueryPlanNode
discoverTableNames
in interface QueryPlanNode
discoverTableNames
in class QueryPlan.SingleQueryPlanNode
public java.util.ArrayList discoverCorrelatedVariables(int level, java.util.ArrayList list)
QueryPlan.SingleQueryPlanNode
discoverCorrelatedVariables
in interface QueryPlanNode
discoverCorrelatedVariables
in class QueryPlan.SingleQueryPlanNode
public java.lang.Object clone() throws java.lang.CloneNotSupportedException
QueryPlan.SingleQueryPlanNode
clone
in interface QueryPlanNode
clone
in class QueryPlan.SingleQueryPlanNode
java.lang.CloneNotSupportedException
public java.lang.String titleString()
titleString
in class QueryPlan.SingleQueryPlanNode
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