Top Description Fields Constructors Methods
org.h2.expression.function

public final Class ConcatFunction

extends FunctionN
Class Inheritance
Imports
org.h2.engine.SessionLocal, org.h2.expression.Expression, .TypedValueExpression, org.h2.value.DataType, .TypeInfo, .Value, .ValueNull, .ValueVarchar
A CONCAT or CONCAT_WS function.

Field Summary

Modifier and TypeField and Description
public static final int
CONCAT

CONCAT() (non-standard).

public static final int
CONCAT_WS

CONCAT_WS() (non-standard).

private final int
function

private static final String[]
NAMES

Constructor Summary

AccessConstructor and Description
public
ConcatFunction(int function)

public
ConcatFunction(int function, Expression... args)

Method Summary

Modifier and TypeMethod and Description
public String
getName()

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

Get the name.

private long
getPrecision(int i)

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.expression.function.FunctionN:
getUnenclosedSQLgetValue

Field Detail

CONCATback to summary
public static final int CONCAT

CONCAT() (non-standard).

CONCAT_WSback to summary
public static final int CONCAT_WS

CONCAT_WS() (non-standard).

functionback to summary
private final int function
NAMESback to summary
private static final String[] NAMES

Constructor Detail

ConcatFunctionback to summary
public ConcatFunction(int function)
ConcatFunctionback to summary
public ConcatFunction(int function, Expression... args)

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
getPrecisionback to summary
private long getPrecision(int i)
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