org.h2.expression.function

Class MathFunction

java.lang.Object

org.h2.expression.Expression

org.h2.expression.Operation1_2

org.h2.expression.function.Function1_2

org.h2.expression.function.MathFunction

All Implemented Interfaces:

NamedExpression, HasSQL, Typed

public final class MathFunction
extends Function1_2

A math function.

Field Summary

Fields

Modifier and Type	Field and Description
static int	ABS ABS().
static int	CEIL CEIL() or CEILING().
static int	FLOOR FLOOR().
static int	MOD MOD().
static int	ROUND ROUND() (non-standard)
static int	ROUNDMAGIC ROUNDMAGIC() (non-standard)
static int	SIGN SIGN() (non-standard)
static int	TRUNC TRUNC() (non-standard)

Fields inherited from class org.h2.expression.Operation1_2

left, right, type

Fields inherited from class org.h2.expression.Expression

AUTO_PARENTHESES, MAP_IN_AGGREGATE, MAP_IN_WINDOW, MAP_INITIAL, WITH_PARENTHESES, WITHOUT_PARENTHESES

Fields inherited from interface org.h2.util.HasSQL

ADD_PLAN_INFORMATION, DEFAULT_SQL_FLAGS, NO_CASTS, QUOTE_ONLY_WHEN_REQUIRED, REPLACE_LOBS_FOR_TRACE, TRACE_SQL_FLAGS

Constructor Summary

Constructors

Constructor and Description
MathFunction(Expression arg1, Expression arg2, int function)

Method Summary

Modifier and Type	Method and Description
java.lang.String	getName() Get the name.
Value	getValue(SessionLocal session, Value v1, Value v2) Returns the value of this function.
Expression	optimize(SessionLocal session) Try to optimize the expression.

Methods inherited from class org.h2.expression.function.Function1_2

getUnenclosedSQL, getValue

Methods inherited from class org.h2.expression.Operation1_2

getCost, getSubexpression, getSubexpressionCount, getType, isEverything, mapColumns, setEvaluatable, updateAggregate

Methods inherited from class org.h2.expression.Expression

addFilterConditions, createIndexConditions, getAlias, getBooleanValue, getColumnName, getColumnNameForView, getEnclosedSQL, getNonAliasExpression, getNotIfPossible, getNullable, getSchemaName, getSQL, getSQL, getSQL, getSQL, getTableAlias, getTableName, getWhenSQL, getWhenValue, isConstant, isIdentity, isNullConstant, isValueSet, isWhenConditionOperand, needParentheses, optimizeCondition, toString, writeExpressions, writeExpressions

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.h2.util.HasSQL

getTraceSQL

Field Detail

ABS

public static final int ABS

ABS().

See Also:

Constant Field Values

MOD

public static final int MOD

MOD().

See Also:

Constant Field Values

FLOOR

public static final int FLOOR

FLOOR().

See Also:

Constant Field Values

CEIL

public static final int CEIL

CEIL() or CEILING().

See Also:

Constant Field Values

ROUND

public static final int ROUND

ROUND() (non-standard)

See Also:

Constant Field Values

ROUNDMAGIC

public static final int ROUNDMAGIC

ROUNDMAGIC() (non-standard)

See Also:

Constant Field Values

SIGN

public static final int SIGN

SIGN() (non-standard)

See Also:

Constant Field Values

TRUNC

public static final int TRUNC

TRUNC() (non-standard)

See Also:

Constant Field Values

Constructor Detail

MathFunction

public MathFunction(Expression arg1,
                    Expression arg2,
                    int function)

Method Detail

getValue

public Value getValue(SessionLocal session,
                      Value v1,
                      Value v2)

Description copied from class: Function1_2

Returns the value of this function.

Overrides:

getValue in class Function1_2

Parameters:

session - the session

v1 - the value of first argument

v2 - the value of second argument, or null

Returns:

the resulting value

optimize

public Expression optimize(SessionLocal session)

Description copied from class: Expression

Try to optimize the expression.

Specified by:

optimize in class Expression

Parameters:

session - the session

Returns:

the optimized expression

getName

public java.lang.String getName()

Description copied from interface: NamedExpression

Get the name.

Returns:

the name in uppercase