Package org.h2.mode

Class FunctionsOracle

java.lang.Object

org.h2.expression.Expression

org.h2.expression.OperationN

org.h2.expression.function.FunctionN

org.h2.mode.ModeFunction

org.h2.mode.FunctionsOracle

All Implemented Interfaces:

ExpressionWithVariableParameters, NamedExpression, HasSQL, Typed

public final class FunctionsOracle
extends ModeFunction

Functions for Mode.ModeEnum.Oracle compatibility mode.

Field Summary

Fields

Modifier and Type	Field	Description
private static final int	ADD_MONTHS
private static final HashMap<String,FunctionInfo>	FUNCTIONS
private static final int	SYS_GUID
private static final int	TO_DATE
private static final int	TO_TIMESTAMP
private static final int	TO_TIMESTAMP_TZ

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

Constructor Summary

Constructors

Modifier	Constructor	Description
private	FunctionsOracle(FunctionInfo info)

Method Summary

Modifier and Type	Method	Description
protected void	checkParameterCount(int len)	Check if the parameter count is correct.
static FunctionsOracle	getFunction(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, getArgumentsValues, getFunction, getName, getNullOrValue, isEverything, optimizeArguments

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

Field Details

ADD_MONTHS

private static final int ADD_MONTHS

See Also:

• Constant Field Values

SYS_GUID

private static final int SYS_GUID

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

TO_TIMESTAMP_TZ

private static final int TO_TIMESTAMP_TZ

See Also:

• Constant Field Values

FUNCTIONS

private static final HashMap<String,FunctionInfo> FUNCTIONS

Constructor Details

FunctionsOracle

private FunctionsOracle(FunctionInfo info)

Method Details

getFunction

public static FunctionsOracle 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