Package org.h2.expression.function

Class StringFunction1

java.lang.Object

org.h2.expression.Expression

org.h2.expression.Operation1

org.h2.expression.function.Function1

org.h2.expression.function.StringFunction1

All Implemented Interfaces:

NamedExpression, HasSQL, Typed

public final class StringFunction1
extends Function1

A string function with one argument.

Field Summary

Fields

Modifier and Type	Field	Description
static int	ASCII	ASCII() (non-standard).
static int	CHAR	CHAR() (non-standard).
private int	function
static int	HEXTORAW	HEXTORAW() (non-standard).
static int	LOWER	LOWER().
private static java.lang.String[]	NAMES
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).

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
StringFunction1(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.
private static Value	hexToRaw(java.lang.String s, SessionLocal session)
Expression	optimize(SessionLocal session)	Try to optimize the expression.
private static java.lang.String	rawToHex(Value v, Mode mode)

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

UPPER

public static final int UPPER

UPPER().

See Also:

Constant Field Values

LOWER

public static final int LOWER

LOWER().

See Also:

Constant Field Values

ASCII

public static final int ASCII

ASCII() (non-standard).

See Also:

Constant Field Values

CHAR

public static final int CHAR

CHAR() (non-standard).

See Also:

Constant Field Values

STRINGENCODE

public static final int STRINGENCODE

STRINGENCODE() (non-standard).

See Also:

Constant Field Values

STRINGDECODE

public static final int STRINGDECODE

STRINGDECODE() (non-standard).

See Also:

Constant Field Values

STRINGTOUTF8

public static final int STRINGTOUTF8

STRINGTOUTF8() (non-standard).

See Also:

Constant Field Values

UTF8TOSTRING

public static final int UTF8TOSTRING

UTF8TOSTRING() (non-standard).

See Also:

Constant Field Values

HEXTORAW

public static final int HEXTORAW

HEXTORAW() (non-standard).

See Also:

Constant Field Values

RAWTOHEX

public static final int RAWTOHEX

RAWTOHEX() (non-standard).

See Also:

Constant Field Values

SPACE

public static final int SPACE

SPACE() (non-standard).

See Also:

Constant Field Values

QUOTE_IDENT

public static final int QUOTE_IDENT

QUOTE_IDENT() (non-standard).

See Also:

Constant Field Values

NAMES

private static final java.lang.String[] NAMES

function

private final int function

Constructor Detail

StringFunction1

public StringFunction1(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

hexToRaw

private static Value hexToRaw(java.lang.String s,
                              SessionLocal session)

rawToHex

private static java.lang.String rawToHex(Value v,
                                         Mode mode)

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