org.h2.expression.function

类 MathFunction

java.lang.Object

org.h2.expression.Expression

org.h2.expression.Operation1_2

org.h2.expression.function.Function1_2

org.h2.expression.function.MathFunction

所有已实现的接口:

NamedExpression, HasSQL, Typed

public final class MathFunction
extends Function1_2

A math function.

字段概要

字段

限定符和类型	字段和说明
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)

从类继承的字段 org.h2.expression.Operation1_2

left, right, type

从类继承的字段 org.h2.expression.Expression

AUTO_PARENTHESES, MAP_IN_AGGREGATE, MAP_IN_WINDOW, MAP_INITIAL, WITH_PARENTHESES, WITHOUT_PARENTHESES

从接口继承的字段 org.h2.util.HasSQL

ADD_PLAN_INFORMATION, DEFAULT_SQL_FLAGS, NO_CASTS, QUOTE_ONLY_WHEN_REQUIRED, REPLACE_LOBS_FOR_TRACE, TRACE_SQL_FLAGS

构造器概要

构造器

构造器和说明
MathFunction(Expression arg1, Expression arg2, int function)

方法概要

限定符和类型	方法和说明
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.

从类继承的方法 org.h2.expression.function.Function1_2

getUnenclosedSQL, getValue

从类继承的方法 org.h2.expression.Operation1_2

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

从类继承的方法 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

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.h2.util.HasSQL

getTraceSQL

字段详细资料

ABS

public static final int ABS

ABS().

另请参阅:

常量字段值

MOD

public static final int MOD

MOD().

另请参阅:

常量字段值

FLOOR

public static final int FLOOR

FLOOR().

另请参阅:

常量字段值

CEIL

public static final int CEIL

CEIL() or CEILING().

另请参阅:

常量字段值

ROUND

public static final int ROUND

ROUND() (non-standard)

另请参阅:

常量字段值

ROUNDMAGIC

public static final int ROUNDMAGIC

ROUNDMAGIC() (non-standard)

另请参阅:

常量字段值

SIGN

public static final int SIGN

SIGN() (non-standard)

另请参阅:

常量字段值

TRUNC

public static final int TRUNC

TRUNC() (non-standard)

另请参阅:

常量字段值

构造器详细资料

MathFunction

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

方法详细资料

getValue

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

从类复制的说明: Function1_2

Returns the value of this function.

覆盖:

getValue 在类中 Function1_2

参数:

session - the session

v1 - the value of first argument

v2 - the value of second argument, or null

返回:

the resulting value

optimize

public Expression optimize(SessionLocal session)

从类复制的说明: Expression

Try to optimize the expression.

指定者:

optimize 在类中 Expression

参数:

session - the session

返回:

the optimized expression

getName

public String getName()

从接口复制的说明: NamedExpression

Get the name.

返回:

the name in uppercase