Package org.h2.expression.function
Class DayMonthNameFunction
- java.lang.Object
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- org.h2.expression.Expression
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- org.h2.expression.Operation1
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- org.h2.expression.function.Function1
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- org.h2.expression.function.DayMonthNameFunction
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- All Implemented Interfaces:
NamedExpression
,HasSQL
,Typed
public final class DayMonthNameFunction extends Function1
A DAYNAME() or MONTHNAME() function.
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Field Summary
Fields Modifier and Type Field Description static int
DAYNAME
DAYNAME() (non-standard).private int
function
static int
MONTHNAME
MONTHNAME() (non-standard).private static java.lang.String[][]
MONTHS_AND_WEEKS
English names of months and week days.private static java.lang.String[]
NAMES
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Fields inherited from class org.h2.expression.Operation1
arg, type
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Fields inherited from class org.h2.expression.Expression
AUTO_PARENTHESES, MAP_IN_AGGREGATE, MAP_IN_WINDOW, MAP_INITIAL, WITH_PARENTHESES, WITHOUT_PARENTHESES
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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
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Constructor Summary
Constructors Constructor Description DayMonthNameFunction(Expression arg, int function)
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description private static java.lang.String[]
getMonthsAndWeeks(int field)
Return names of month or weeks.java.lang.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.-
Methods inherited from class org.h2.expression.function.Function1
getUnenclosedSQL
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Methods inherited from class org.h2.expression.Operation1
getCost, getSubexpression, getSubexpressionCount, getType, isEverything, mapColumns, setEvaluatable, updateAggregate
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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
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
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Methods inherited from interface org.h2.util.HasSQL
getTraceSQL
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Field Detail
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DAYNAME
public static final int DAYNAME
DAYNAME() (non-standard).- See Also:
- Constant Field Values
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MONTHNAME
public static final int MONTHNAME
MONTHNAME() (non-standard).- See Also:
- Constant Field Values
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NAMES
private static final java.lang.String[] NAMES
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MONTHS_AND_WEEKS
private static volatile java.lang.String[][] MONTHS_AND_WEEKS
English names of months and week days.
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function
private final int function
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Constructor Detail
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DayMonthNameFunction
public DayMonthNameFunction(Expression arg, int function)
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Method Detail
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getValue
public Value getValue(SessionLocal session)
Description copied from class:Expression
Return the resulting value for the current row.- Specified by:
getValue
in classExpression
- Parameters:
session
- the session- Returns:
- the result
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getMonthsAndWeeks
private static java.lang.String[] getMonthsAndWeeks(int field)
Return names of month or weeks.- Parameters:
field
- 0 for months, 1 for weekdays- Returns:
- names of month or weeks
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optimize
public Expression optimize(SessionLocal session)
Description copied from class:Expression
Try to optimize the expression.- Specified by:
optimize
in classExpression
- Parameters:
session
- the session- Returns:
- the optimized expression
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getName
public java.lang.String getName()
Description copied from interface:NamedExpression
Get the name.- Returns:
- the name in uppercase
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