org.apache.derby.impl.sql.compile

Class WindowFunctionNode

java.lang.Object

org.apache.derby.impl.sql.compile.QueryTreeNode

org.apache.derby.impl.sql.compile.ValueNode

org.apache.derby.impl.sql.compile.WindowFunctionNode

All Implemented Interfaces:

Visitable

Direct Known Subclasses:

RowNumberFunctionNode

public abstract class WindowFunctionNode
extends ValueNode

Superclass of any window function call.

Method Summary

Modifier and Type	Method and Description
boolean	isConstantExpression() ValueNode override.
void	printSubNodes(int depth) QueryTreeNode override.
java.lang.String	toString() Convert this object to a String.

Methods inherited from class org.apache.derby.impl.sql.compile.ValueNode

checkIsBoolean, selectivity, setCollationInfo, setCollationInfo, setNullability, updatableByCursor

Methods inherited from class org.apache.derby.impl.sql.compile.QueryTreeNode

accept, addTag, bindOffsetFetch, bindRowMultiSet, bindUserCatalogType, bindUserType, checkReliability, checkReliability, createTypeDependency, getBeginOffset, getDataDictionary, getEndOffset, getExecutionFactory, getGenericConstantActionFactory, getOffsetOrderedNodes, getOptimizerFactory, getOptimizerTracer, getParameterTypes, getUDTDesc, isAtomic, makeConstantAction, makeTableName, makeTableName, optimizerTracingIsOn, orReliability, referencesSessionSchema, setBeginOffset, setEndOffset, taggedWith, treePrint

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

isConstantExpression

public boolean isConstantExpression()

ValueNode override.

Returns:

Whether or not this expression tree represents a constant expression.

See Also:

ValueNode.isConstantExpression()

printSubNodes

public void printSubNodes(int depth)

QueryTreeNode override.

Parameters:

depth - The depth of this node in the tree

See Also:

QueryTreeNode.printSubNodes(int)

toString

public java.lang.String toString()

Convert this object to a String. See comments in QueryTreeNode.java for how this should be done for tree printing.

Overrides:

toString in class ValueNode

Returns:

This object as a String