Top Description Fields Constructors Methods
org.h2.mode

public final Class FunctionsDB2Derby

extends ModeFunction
Class Inheritance
Imports
java.util.HashMap, org.h2.engine.SessionLocal, org.h2.expression.Expression, org.h2.message.DbException, org.h2.value.ExtTypeInfoNumeric, .TypeInfo, .Value
Functions for org.h2.engine.Mode.ModeEnum#DB2 and org.h2.engine.Mode.ModeEnum#Derby compatibility modes.

Field Summary

Modifier and TypeField and Description
private static final HashMap<String, FunctionInfo>
FUNCTIONS

private static final int
IDENTITY_VAL_LOCAL

private static final TypeInfo
IDENTITY_VAL_LOCAL_TYPE

Inherited from org.h2.mode.ModeFunction:
infoVAR_ARGS

Constructor Summary

AccessConstructor and Description
private
FunctionsDB2Derby(FunctionInfo info)

Method Summary

Modifier and TypeMethod and Description
public static FunctionsDB2Derby

Returns:

the function with specified name or null
getFunction(String
the upper-case name of a function
upperName)

Returns mode-specific function for a given name, or null.

public Value
getValue(SessionLocal
the session
session)

Overrides org.h2.expression.function.FunctionN.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.mode.ModeFunction:
checkParameterCountdoneWithParametersgetArgumentsValuesgetCompatibilityDateTimeValueFunctiongetFunctiongetNamegetNullOrValueisEverythingoptimizeArguments

Field Detail

FUNCTIONSback to summary
private static final HashMap<String, FunctionInfo> FUNCTIONS
IDENTITY_VAL_LOCALback to summary
private static final int IDENTITY_VAL_LOCAL
IDENTITY_VAL_LOCAL_TYPEback to summary
private static final TypeInfo IDENTITY_VAL_LOCAL_TYPE

Constructor Detail

FunctionsDB2Derbyback to summary
private FunctionsDB2Derby(FunctionInfo info)

Method Detail

getFunctionback to summary
public static FunctionsDB2Derby getFunction(String upperName)

Returns mode-specific function for a given name, or null.

Parameters
upperName:String

the upper-case name of a function

Returns:FunctionsDB2Derby

the function with specified name or null

getValueback to summary
public Value getValue(SessionLocal session)

Overrides org.h2.expression.function.FunctionN.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