Class FunctionsPostgreSQL

java.lang.Object

org.h2.expression.Expression

org.h2.expression.OperationN

org.h2.expression.function.FunctionN

org.h2.mode.ModeFunction

org.h2.mode.FunctionsPostgreSQL

All Implemented Interfaces:

ExpressionWithVariableParameters, NamedExpression, HasSQL, Typed

public final class FunctionsPostgreSQL
extends ModeFunction

Functions for Mode.ModeEnum.PostgreSQL compatibility mode.

Field Summary

Fields

Modifier and Type	Field	Description
private static final int	ARRAY_TO_STRING
private static final int	CURRENT_DATABASE
private static final int	CURRTID2
private static final int	FORMAT_TYPE
private static final HashMap<String, FunctionInfo>	FUNCTIONS
private static final int	HAS_DATABASE_PRIVILEGE
private static final int	HAS_SCHEMA_PRIVILEGE
private static final int	HAS_TABLE_PRIVILEGE
private static final int	LASTVAL
private static final int	OBJ_DESCRIPTION
private static final int	PG_ENCODING_TO_CHAR
private static final int	PG_GET_EXPR
private static final int	PG_GET_INDEXDEF
private static final int	PG_GET_USERBYID
private static final int	PG_POSTMASTER_START_TIME
private static final int	PG_RELATION_SIZE
private static final int	PG_STAT_GET_NUMSCANS
private static final int	PG_TABLE_IS_VISIBLE
private static final int	SET_CONFIG
private static final int	TO_DATE
private static final int	TO_TIMESTAMP
private static final int	VERSION

Fields inherited from class ModeFunction

info, VAR_ARGS

Fields inherited from class OperationN

args, argsCount, type

Fields inherited from class Expression

AUTO_PARENTHESES, MAP_IN_AGGREGATE, MAP_IN_WINDOW, MAP_INITIAL, WITH_PARENTHESES, WITHOUT_PARENTHESES

Fields inherited from interface HasSQL

ADD_PLAN_INFORMATION, DEFAULT_SQL_FLAGS, NO_CASTS, QUOTE_ONLY_WHEN_REQUIRED, REPLACE_LOBS_FOR_TRACE, TRACE_SQL_FLAGS

Constructor Summary

Constructors

Modifier	Constructor	Description
private	FunctionsPostgreSQL(FunctionInfo info)

Method Summary

Modifier and Type	Method	Description
protected void	checkParameterCount(int len)	Check if the parameter count is correct.
private static String	encodingToChar(int code)
static FunctionsPostgreSQL	getFunction(String upperName)	Returns mode-specific function for a given name, or null.
private static Value	getIndexdef(SessionLocal session, int indexId, Value ordinalPosition, Value pretty)
private static String	getUserbyid(SessionLocal session, int uid)
Value	getValue(SessionLocal session)	Return the resulting value for the current row.
Expression	optimize(SessionLocal session)	Try to optimize the expression.
private static Value	relationSize(SessionLocal session, Value tableOidOrName)

Methods inherited from class ModeFunction

doneWithParameters, getArgumentsValues, getFunction, getName, getNullOrValue, isEverything, optimizeArguments

Methods inherited from class FunctionN

getUnenclosedSQL, getValue

Methods inherited from class OperationN

addParameter, getCost, getSubexpression, getSubexpressionCount, getType, mapColumns, optimizeArguments, setEvaluatable, updateAggregate

Methods inherited from class 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 Object

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

Methods inherited from interface HasSQL

getTraceSQL

Field Details

CURRENT_DATABASE

private static final int CURRENT_DATABASE

See Also:

• Constant Field Values

CURRTID2

private static final int CURRTID2

See Also:

• Constant Field Values

FORMAT_TYPE

private static final int FORMAT_TYPE

See Also:

• Constant Field Values

HAS_DATABASE_PRIVILEGE

private static final int HAS_DATABASE_PRIVILEGE

See Also:

• Constant Field Values

HAS_SCHEMA_PRIVILEGE

private static final int HAS_SCHEMA_PRIVILEGE

See Also:

• Constant Field Values

HAS_TABLE_PRIVILEGE

private static final int HAS_TABLE_PRIVILEGE

See Also:

• Constant Field Values

LASTVAL

private static final int LASTVAL

See Also:

• Constant Field Values

VERSION

private static final int VERSION

See Also:

• Constant Field Values

OBJ_DESCRIPTION

private static final int OBJ_DESCRIPTION

See Also:

• Constant Field Values

PG_ENCODING_TO_CHAR

private static final int PG_ENCODING_TO_CHAR

See Also:

• Constant Field Values

PG_GET_EXPR

private static final int PG_GET_EXPR

See Also:

• Constant Field Values

PG_GET_INDEXDEF

private static final int PG_GET_INDEXDEF

See Also:

• Constant Field Values

PG_GET_USERBYID

private static final int PG_GET_USERBYID

See Also:

• Constant Field Values

PG_POSTMASTER_START_TIME

private static final int PG_POSTMASTER_START_TIME

See Also:

• Constant Field Values

PG_RELATION_SIZE

private static final int PG_RELATION_SIZE

See Also:

• Constant Field Values

PG_TABLE_IS_VISIBLE

private static final int PG_TABLE_IS_VISIBLE

See Also:

• Constant Field Values

SET_CONFIG

private static final int SET_CONFIG

See Also:

• Constant Field Values

ARRAY_TO_STRING

private static final int ARRAY_TO_STRING

See Also:

• Constant Field Values

PG_STAT_GET_NUMSCANS

private static final int PG_STAT_GET_NUMSCANS

See Also:

• Constant Field Values

TO_DATE

private static final int TO_DATE

See Also:

• Constant Field Values

TO_TIMESTAMP

private static final int TO_TIMESTAMP

See Also:

• Constant Field Values

FUNCTIONS

private static final HashMap<String, FunctionInfo> FUNCTIONS

Constructor Details

FunctionsPostgreSQL

private FunctionsPostgreSQL(FunctionInfo info)

Method Details

getFunction

public static FunctionsPostgreSQL getFunction(String upperName)

Returns mode-specific function for a given name, or null.

Parameters:

upperName - the upper-case name of a function

Returns:

the function with specified name or null

checkParameterCount

protected void checkParameterCount(int len)

Description copied from class: ModeFunction

Check if the parameter count is correct.

Overrides:

checkParameterCount in class ModeFunction

Parameters:

len - the number of parameters set

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

getValue

public Value getValue(SessionLocal session)

Description copied from class: Expression

Return the resulting value for the current row.

Overrides:

getValue in class FunctionN

Parameters:

session - the session

Returns:

the result

encodingToChar

private static String encodingToChar(int code)

getIndexdef

private static Value getIndexdef(SessionLocal session,
 int indexId,
 Value ordinalPosition,
 Value pretty)

getUserbyid

private static String getUserbyid(SessionLocal session,
 int uid)

relationSize

private static Value relationSize(SessionLocal session,
 Value tableOidOrName)