Package org.h2.expression.function

Class MathFunction1

java.lang.Object

org.h2.expression.Expression

org.h2.expression.Operation1

org.h2.expression.function.Function1

org.h2.expression.function.MathFunction1

All Implemented Interfaces:

NamedExpression, HasSQL, Typed

public final class MathFunction1
extends Function1

A math function with one argument and DOUBLE PRECISION result.

Field Summary

Fields

Modifier and Type	Field	Description
static int	ACOS	ACOS().
static int	ASIN	ASIN().
static int	ATAN	ATAN().
static int	COS	COS().
static int	COSH	COSH().
static int	COT	COT() (non-standard).
static int	DEGREES	DEGREES() (non-standard).
static int	EXP	EXP().
private int	function
static int	LN	LN().
static int	LOG10	LOG10().
private static java.lang.String[]	NAMES
static int	RADIANS	RADIANS() (non-standard).
static int	SIN	SIN().
static int	SINH	SINH().
static int	SQRT	SQRT().
static int	TAN	TAN().
static int	TANH	TANH().

Fields inherited from class org.h2.expression.Operation1

arg, 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	Description
MathFunction1(Expression arg, int function)

Method Summary

Modifier and Type	Method	Description
java.lang.String	getName()	Get the name.
Value	getValue(SessionLocal session)	Return the resulting value for the current row.
Expression	optimize(SessionLocal session)	Try to optimize the expression.

Methods inherited from class org.h2.expression.function.Function1

getUnenclosedSQL

Methods inherited from class org.h2.expression.Operation1

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

SIN

public static final int SIN

SIN().

See Also:

Constant Field Values

COS

public static final int COS

COS().

See Also:

Constant Field Values

TAN

public static final int TAN

TAN().

See Also:

Constant Field Values

COT

public static final int COT

COT() (non-standard).

See Also:

Constant Field Values

SINH

public static final int SINH

SINH().

See Also:

Constant Field Values

COSH

public static final int COSH

COSH().

See Also:

Constant Field Values

TANH

public static final int TANH

TANH().

See Also:

Constant Field Values

ASIN

public static final int ASIN

ASIN().

See Also:

Constant Field Values

ACOS

public static final int ACOS

ACOS().

See Also:

Constant Field Values

ATAN

public static final int ATAN

ATAN().

See Also:

Constant Field Values

LOG10

public static final int LOG10

LOG10().

See Also:

Constant Field Values

LN

public static final int LN

LN().

See Also:

Constant Field Values

EXP

public static final int EXP

EXP().

See Also:

Constant Field Values

SQRT

public static final int SQRT

SQRT().

See Also:

Constant Field Values

DEGREES

public static final int DEGREES

DEGREES() (non-standard).

See Also:

Constant Field Values

RADIANS

public static final int RADIANS

RADIANS() (non-standard).

See Also:

Constant Field Values

NAMES

private static final java.lang.String[] NAMES

function

private final int function

Constructor Detail

MathFunction1

public MathFunction1(Expression arg,
                     int function)

Method Detail

getValue

public Value getValue(SessionLocal session)

Description copied from class: Expression

Return the resulting value for the current row.

Specified by:

getValue in class Expression

Parameters:

session - the session

Returns:

the result

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