org.h2.expression.function

类 StringFunction1

java.lang.Object

org.h2.expression.Expression

org.h2.expression.Operation1

org.h2.expression.function.Function1

org.h2.expression.function.StringFunction1

所有已实现的接口:

NamedExpression, HasSQL, Typed

public final class StringFunction1
extends Function1

A string function with one argument.

字段概要

字段

限定符和类型	字段和说明
static int	ASCII ASCII() (non-standard).
static int	CHAR CHAR() (non-standard).
static int	HEXTORAW HEXTORAW() (non-standard).
static int	LOWER LOWER().
static int	QUOTE_IDENT QUOTE_IDENT() (non-standard).
static int	RAWTOHEX RAWTOHEX() (non-standard).
static int	SPACE SPACE() (non-standard).
static int	STRINGDECODE STRINGDECODE() (non-standard).
static int	STRINGENCODE STRINGENCODE() (non-standard).
static int	STRINGTOUTF8 STRINGTOUTF8() (non-standard).
static int	UPPER UPPER().
static int	UTF8TOSTRING UTF8TOSTRING() (non-standard).

从类继承的字段 org.h2.expression.Operation1

arg, 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
StringFunction1(Expression arg, 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) Return the resulting value for the current row.
Expression	optimize(SessionLocal session) Try to optimize the expression.

从类继承的方法 org.h2.expression.function.Function1

getUnenclosedSQL

从类继承的方法 org.h2.expression.Operation1

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

UPPER

public static final int UPPER

UPPER().

另请参阅:

常量字段值

LOWER

public static final int LOWER

LOWER().

另请参阅:

常量字段值

ASCII

public static final int ASCII

ASCII() (non-standard).

另请参阅:

常量字段值

CHAR

public static final int CHAR

CHAR() (non-standard).

另请参阅:

常量字段值

STRINGENCODE

public static final int STRINGENCODE

STRINGENCODE() (non-standard).

另请参阅:

常量字段值

STRINGDECODE

public static final int STRINGDECODE

STRINGDECODE() (non-standard).

另请参阅:

常量字段值

STRINGTOUTF8

public static final int STRINGTOUTF8

STRINGTOUTF8() (non-standard).

另请参阅:

常量字段值

UTF8TOSTRING

public static final int UTF8TOSTRING

UTF8TOSTRING() (non-standard).

另请参阅:

常量字段值

HEXTORAW

public static final int HEXTORAW

HEXTORAW() (non-standard).

另请参阅:

常量字段值

RAWTOHEX

public static final int RAWTOHEX

RAWTOHEX() (non-standard).

另请参阅:

常量字段值

SPACE

public static final int SPACE

SPACE() (non-standard).

另请参阅:

常量字段值

QUOTE_IDENT

public static final int QUOTE_IDENT

QUOTE_IDENT() (non-standard).

另请参阅:

常量字段值

构造器详细资料

StringFunction1

public StringFunction1(Expression arg,
                       int function)

方法详细资料

getValue

public Value getValue(SessionLocal session)

从类复制的说明: Expression

Return the resulting value for the current row.

指定者:

getValue 在类中 Expression

参数:

session - the session

返回:

the result

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