org.h2.mode

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 inherited from class org.h2.mode.ModeFunction

info, VAR_ARGS

Fields inherited from class org.h2.expression.OperationN

args, argsCount, 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

Method Summary

Modifier and Type	Method and Description
protected void	checkParameterCount(int len) Check if the parameter count is correct.
static FunctionsPostgreSQL	getFunction(java.lang.String upperName) Returns mode-specific function for a given name, or null.
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.mode.ModeFunction

doneWithParameters, getCompatibilityDateTimeValueFunction, getFunction, getName, isEverything

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

getUnenclosedSQL, getValue

Methods inherited from class org.h2.expression.OperationN

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

Method Detail

getFunction

public static FunctionsPostgreSQL getFunction(java.lang.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.

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