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
CHAR_LENGTH(), or OCTET_LENGTH() function.
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Field Summary
FieldsModifier and TypeFieldDescriptionstatic final int
BIT_LENGTH() (non-standard).static final int
CHAR_LENGTH().private final int
private static final String[]
static final int
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
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptiongetName()
Get the name.getValue
(SessionLocal session) Return the resulting value for the current row.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
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Field Details
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CHAR_LENGTH
public static final int CHAR_LENGTHCHAR_LENGTH().- See Also:
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OCTET_LENGTH
public static final int OCTET_LENGTHOCTET_LENGTH().- See Also:
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BIT_LENGTH
public static final int BIT_LENGTHBIT_LENGTH() (non-standard).- See Also:
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NAMES
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function
private final int function
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Constructor Details
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LengthFunction
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Method Details
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getValue
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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optimize
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
Description copied from interface:NamedExpression
Get the name.- Returns:
- the name in uppercase
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