org.apache.derby.impl.sql.compile

Class UnaryComparisonOperatorNode

java.lang.Object

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

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

org.apache.derby.impl.sql.compile.UnaryComparisonOperatorNode

All Implemented Interfaces:

Visitable

Direct Known Subclasses:

IsNullNode

public abstract class UnaryComparisonOperatorNode
extends ValueNode

This node is the superclass for all unary comparison operators, such as is null and is not null.

Method Summary

Modifier and Type	Method and Description
void	generateAbsoluteColumnId(MethodBuilder mb, Optimizable optTable)
void	generateExpressionOperand(Optimizable optTable, int columnPosition, ExpressionClassBuilderInterface acbi, MethodBuilder mb)
void	generateOrderedNulls(MethodBuilder mb)
void	generateQualMethod(ExpressionClassBuilderInterface acbi, MethodBuilder mb, Optimizable optTable)
void	generateRelativeColumnId(MethodBuilder mb, Optimizable optTable)
ColumnReference	getColumnOperand(Optimizable optTable)
ColumnReference	getColumnOperand(Optimizable optTable, int columnPosition)
ValueNode	getExpressionOperand(int tableNumber, int columnNumber, Optimizable ft)
ValueNode	getOperand(ColumnReference cRef, int refSetSize, boolean otherSide)
int	getOrderableVariantType(Optimizable optTable)
int	getStartOperator(Optimizable optTable)
int	getStopOperator(Optimizable optTable)
boolean	isQualifier(Optimizable optTable, boolean forPush)
boolean	orderedNulls()
boolean	selfComparison(ColumnReference cr)
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

getColumnOperand

public ColumnReference getColumnOperand(Optimizable optTable,
                                        int columnPosition)

See Also:

RelationalOperator.getColumnOperand(org.apache.derby.iapi.sql.compile.Optimizable, int)

getColumnOperand

public ColumnReference getColumnOperand(Optimizable optTable)

See Also:

RelationalOperator.getColumnOperand(org.apache.derby.iapi.sql.compile.Optimizable, int)

getOperand

public ValueNode getOperand(ColumnReference cRef,
                            int refSetSize,
                            boolean otherSide)

See Also:

RelationalOperator.getOperand(org.apache.derby.impl.sql.compile.ColumnReference, int, boolean)

selfComparison

public boolean selfComparison(ColumnReference cr)

See Also:

RelationalOperator.selfComparison(org.apache.derby.impl.sql.compile.ColumnReference)

getExpressionOperand

public ValueNode getExpressionOperand(int tableNumber,
                                      int columnNumber,
                                      Optimizable ft)

See Also:

RelationalOperator.getExpressionOperand(int, int, org.apache.derby.iapi.sql.compile.Optimizable)

generateExpressionOperand

public void generateExpressionOperand(Optimizable optTable,
                                      int columnPosition,
                                      ExpressionClassBuilderInterface acbi,
                                      MethodBuilder mb)
                               throws StandardException

Throws:

StandardException - Thrown on error

See Also:

RelationalOperator.generateExpressionOperand(org.apache.derby.iapi.sql.compile.Optimizable, int, org.apache.derby.iapi.sql.compile.ExpressionClassBuilderInterface, org.apache.derby.iapi.services.compiler.MethodBuilder)

getStartOperator

public int getStartOperator(Optimizable optTable)

See Also:

RelationalOperator.getStartOperator(org.apache.derby.iapi.sql.compile.Optimizable)

getStopOperator

public int getStopOperator(Optimizable optTable)

See Also:

RelationalOperator.getStopOperator(org.apache.derby.iapi.sql.compile.Optimizable)

generateOrderedNulls

public void generateOrderedNulls(MethodBuilder mb)

See Also:

RelationalOperator.generateOrderedNulls(org.apache.derby.iapi.services.compiler.MethodBuilder)

generateQualMethod

public void generateQualMethod(ExpressionClassBuilderInterface acbi,
                               MethodBuilder mb,
                               Optimizable optTable)
                        throws StandardException

Throws:

StandardException - Thrown on error

See Also:

RelationalOperator.generateQualMethod(org.apache.derby.iapi.sql.compile.ExpressionClassBuilderInterface, org.apache.derby.iapi.services.compiler.MethodBuilder, org.apache.derby.iapi.sql.compile.Optimizable)

generateAbsoluteColumnId

public void generateAbsoluteColumnId(MethodBuilder mb,
                                     Optimizable optTable)

See Also:

RelationalOperator.generateAbsoluteColumnId(org.apache.derby.iapi.services.compiler.MethodBuilder, org.apache.derby.iapi.sql.compile.Optimizable)

generateRelativeColumnId

public void generateRelativeColumnId(MethodBuilder mb,
                                     Optimizable optTable)

See Also:

RelationalOperator.generateRelativeColumnId(org.apache.derby.iapi.services.compiler.MethodBuilder, org.apache.derby.iapi.sql.compile.Optimizable)

orderedNulls

public boolean orderedNulls()

See Also:

RelationalOperator.orderedNulls()

isQualifier

public boolean isQualifier(Optimizable optTable,
                           boolean forPush)

See Also:

RelationalOperator.isQualifier(org.apache.derby.iapi.sql.compile.Optimizable, boolean)

getOrderableVariantType

public int getOrderableVariantType(Optimizable optTable)
                            throws StandardException

Throws:

StandardException - thrown on error

See Also:

RelationalOperator.getOrderableVariantType(org.apache.derby.iapi.sql.compile.Optimizable)

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