Package org.h2.expression.function
Class TrimFunction
- java.lang.Object
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- org.h2.expression.Expression
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- org.h2.expression.Operation1_2
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- org.h2.expression.function.Function1_2
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- org.h2.expression.function.TrimFunction
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- All Implemented Interfaces:
NamedExpression
,HasSQL
,Typed
public final class TrimFunction extends Function1_2
A TRIM function.
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Field Summary
Fields Modifier and Type Field Description private int
flags
static int
LEADING
The LEADING flag.static int
TRAILING
The TRAILING flag.-
Fields inherited from class org.h2.expression.Operation1_2
left, right, 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 TrimFunction(Expression from, Expression space, int flags)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.String
getName()
Get the name.java.lang.StringBuilder
getUnenclosedSQL(java.lang.StringBuilder builder, int sqlFlags)
Get the SQL statement of this expression.Value
getValue(SessionLocal session, Value v1, Value v2)
Returns the value of this function.Expression
optimize(SessionLocal session)
Try to optimize the expression.-
Methods inherited from class org.h2.expression.function.Function1_2
getValue
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Methods inherited from class org.h2.expression.Operation1_2
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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LEADING
public static final int LEADING
The LEADING flag.- See Also:
- Constant Field Values
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TRAILING
public static final int TRAILING
The TRAILING flag.- See Also:
- Constant Field Values
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flags
private int flags
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Constructor Detail
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TrimFunction
public TrimFunction(Expression from, Expression space, int flags)
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Method Detail
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getValue
public Value getValue(SessionLocal session, Value v1, Value v2)
Description copied from class:Function1_2
Returns the value of this function.- Overrides:
getValue
in classFunction1_2
- Parameters:
session
- the sessionv1
- the value of first argumentv2
- the value of second argument, ornull
- Returns:
- the resulting value
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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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getUnenclosedSQL
public java.lang.StringBuilder getUnenclosedSQL(java.lang.StringBuilder builder, int sqlFlags)
Description copied from class:Expression
Get the SQL statement of this expression. This may not always be the original SQL statement, especially after optimization. Enclosing '(' and ')' are never appended.- Overrides:
getUnenclosedSQL
in classFunction1_2
- Parameters:
builder
- string buildersqlFlags
- formatting flags- Returns:
- the specified string builder
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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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