Package com.mckoi.database

Class QueryPlan.SingleQueryPlanNode

java.lang.Object

com.mckoi.database.QueryPlan.SingleQueryPlanNode

All Implemented Interfaces:

QueryPlanNode, java.io.Serializable, java.lang.Cloneable

Direct Known Subclasses:

QueryPlan.CachePointNode, QueryPlan.ConstantSelectNode, QueryPlan.CreateFunctionsNode, QueryPlan.DistinctNode, QueryPlan.ExhaustiveSelectNode, QueryPlan.FunctionalSelectNode, QueryPlan.GroupNode, QueryPlan.LeftOuterJoinNode, QueryPlan.MarkerNode, QueryPlan.MultiColumnEquiSelectNode, QueryPlan.RangeSelectNode, QueryPlan.SimplePatternSelectNode, QueryPlan.SimpleSelectNode, QueryPlan.SortNode, QueryPlan.SubsetNode

Enclosing class:

QueryPlan

public abstract static class QueryPlan.SingleQueryPlanNode
extends java.lang.Object
implements QueryPlanNode

A QueryPlanNode with a single child.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected QueryPlanNode	child	The single child node.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	SingleQueryPlanNode(QueryPlanNode child)	Constructor.

Method Summary

Modifier and Type	Method	Description
QueryPlanNode	child()	Returns the child plan.
java.lang.Object	clone()	Deep clone.
void	debugString(int level, java.lang.StringBuffer buf)	Writes a textural representation of the node to the StringBuffer at the given indent level.
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.
java.lang.String	titleString()

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.mckoi.database.QueryPlanNode

evaluate

Field Detail

child

protected QueryPlanNode child

The single child node.

Constructor Detail

SingleQueryPlanNode

protected SingleQueryPlanNode(QueryPlanNode child)

Constructor.

Method Detail

child

public QueryPlanNode child()

Returns the child plan.

discoverTableNames

public java.util.ArrayList discoverTableNames(java.util.ArrayList list)

Default implementation delegates responsibility to child.

Specified by:

discoverTableNames in interface QueryPlanNode

discoverCorrelatedVariables

public java.util.ArrayList discoverCorrelatedVariables(int level,
                                                       java.util.ArrayList list)

Default implementation that discovers correlated variables for the given offset level.

Specified by:

discoverCorrelatedVariables in interface QueryPlanNode

clone

public java.lang.Object clone()
                       throws java.lang.CloneNotSupportedException

Deep clone.

Specified by:

clone in interface QueryPlanNode

Overrides:

clone in class java.lang.Object

Throws:

java.lang.CloneNotSupportedException

titleString

public java.lang.String titleString()

debugString

public void debugString(int level,
                        java.lang.StringBuffer buf)

Description copied from interface: QueryPlanNode

Writes a textural representation of the node to the StringBuffer at the given indent level.

Specified by:

debugString in interface QueryPlanNode