public static class QueryPlan.SimpleSelectNode extends QueryPlan.SingleQueryPlanNode
child
Constructor and Description |
---|
SimpleSelectNode(QueryPlanNode child,
Variable left_var,
Operator op,
Expression right_expression) |
Modifier and Type | Method and Description |
---|---|
Object |
clone()
Deep clone.
|
ArrayList |
discoverCorrelatedVariables(int level,
ArrayList list)
Default implementation that discovers correlated variables for the
given offset level.
|
ArrayList |
discoverTableNames(ArrayList list)
Default implementation delegates responsibility to child.
|
Table |
evaluate(QueryContext context)
Evaluates the node and returns the result as a Table.
|
String |
titleString() |
child, debugString
public SimpleSelectNode(QueryPlanNode child, Variable left_var, Operator op, Expression right_expression)
public Table evaluate(QueryContext context)
QueryPlanNode
public ArrayList discoverTableNames(ArrayList list)
QueryPlan.SingleQueryPlanNode
discoverTableNames
in interface QueryPlanNode
discoverTableNames
in class QueryPlan.SingleQueryPlanNode
public ArrayList discoverCorrelatedVariables(int level, ArrayList list)
QueryPlan.SingleQueryPlanNode
discoverCorrelatedVariables
in interface QueryPlanNode
discoverCorrelatedVariables
in class QueryPlan.SingleQueryPlanNode
public Object clone() throws CloneNotSupportedException
QueryPlan.SingleQueryPlanNode
clone
in interface QueryPlanNode
clone
in class QueryPlan.SingleQueryPlanNode
CloneNotSupportedException
public String titleString()
titleString
in class QueryPlan.SingleQueryPlanNode
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