Package org.h2.expression.function
Class LengthFunction
- java.lang.Object
-
- org.h2.expression.Expression
-
- org.h2.expression.Operation1
-
- org.h2.expression.function.Function1
-
- org.h2.expression.function.LengthFunction
-
- All Implemented Interfaces:
NamedExpression
,HasSQL
,Typed
public final class LengthFunction extends Function1
CHAR_LENGTH(), or OCTET_LENGTH() function.
-
-
Field Summary
Fields Modifier and Type Field Description static int
BIT_LENGTH
BIT_LENGTH() (non-standard).static int
CHAR_LENGTH
CHAR_LENGTH().private int
function
private static java.lang.String[]
NAMES
static int
OCTET_LENGTH
OCTET_LENGTH().-
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 LengthFunction(Expression arg, int function)
-
Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description 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
-
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
-
CHAR_LENGTH
public static final int CHAR_LENGTH
CHAR_LENGTH().- See Also:
- Constant Field Values
-
OCTET_LENGTH
public static final int OCTET_LENGTH
OCTET_LENGTH().- See Also:
- Constant Field Values
-
BIT_LENGTH
public static final int BIT_LENGTH
BIT_LENGTH() (non-standard).- See Also:
- Constant Field Values
-
NAMES
private static final java.lang.String[] NAMES
-
function
private final int function
-
-
Constructor Detail
-
LengthFunction
public LengthFunction(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 classExpression
- Parameters:
session
- the session- Returns:
- the result
-
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
-
getName
public java.lang.String getName()
Description copied from interface:NamedExpression
Get the name.- Returns:
- the name in uppercase
-
-