Top Description Constructors Methods
org.h2.expression.function

public final Class NullIfFunction

extends Function2
Class Inheritance
Imports
org.h2.engine.SessionLocal, org.h2.expression.Expression, .TypedValueExpression, org.h2.value.TypeInfo, .Value, .ValueNull
A NULLIF function.

Constructor Summary

AccessConstructor and Description
public
NullIfFunction(Expression arg1, Expression arg2)

Method Summary

Modifier and TypeMethod and Description
public String
getName()

Implements org.h2.expression.function.NamedExpression.getName.

Get the name.

public Value
getValue(SessionLocal
the session
session)

Overrides org.h2.expression.function.Function2.getValue.

Return the resulting value for the current row.

public Expression
optimize(SessionLocal
the session
session)

Implements abstract org.h2.expression.Expression.optimize.

Try to optimize the expression.

Inherited from org.h2.expression.function.Function2:
getUnenclosedSQLgetValue

Constructor Detail

NullIfFunctionback to summary
public NullIfFunction(Expression arg1, Expression arg2)

Method Detail

getNameback to summary
public String getName()

Implements org.h2.expression.function.NamedExpression.getName.

Doc from org.h2.expression.function.NamedExpression.getName.

Get the name.

Returns:String

the name in uppercase

Annotations
@Override
getValueback to summary
public Value getValue(SessionLocal session)

Overrides org.h2.expression.function.Function2.getValue.

Doc from org.h2.expression.Expression.getValue.

Return the resulting value for the current row.

Parameters
session:SessionLocal

the session

Returns:Value

the result

Annotations
@Override
optimizeback to summary
public Expression optimize(SessionLocal session)

Implements abstract org.h2.expression.Expression.optimize.

Doc from org.h2.expression.Expression.optimize.

Try to optimize the expression.

Parameters
session:SessionLocal

the session

Returns:Expression

the optimized expression

Annotations
@Override