Package org.h2.expression.function
Class Function2
- java.lang.Object
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- org.h2.expression.Expression
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- org.h2.expression.Operation2
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- org.h2.expression.function.Function2
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- All Implemented Interfaces:
NamedExpression
,HasSQL
,Typed
- Direct Known Subclasses:
MathFunction2
,NullIfFunction
,SetFunction
,SignalFunction
,StringFunction2
public abstract class Function2 extends Operation2 implements NamedExpression
Function with two arguments.
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Field Summary
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Fields inherited from class org.h2.expression.Operation2
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 Modifier Constructor Description protected
Function2(Expression left, Expression right)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.StringBuilder
getUnenclosedSQL(java.lang.StringBuilder builder, int sqlFlags)
Get the SQL statement of this expression.Value
getValue(SessionLocal session)
Return the resulting value for the current row.protected Value
getValue(SessionLocal session, Value v1, Value v2)
Returns the value of this function.-
Methods inherited from class org.h2.expression.Operation2
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, optimize, 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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Methods inherited from interface org.h2.expression.function.NamedExpression
getName
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Constructor Detail
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Function2
protected Function2(Expression left, Expression right)
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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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getValue
protected Value getValue(SessionLocal session, Value v1, Value v2)
Returns the value of this function.- Parameters:
session
- the sessionv1
- the value of first argumentv2
- the value of second argument- Returns:
- the resulting value
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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.- Specified by:
getUnenclosedSQL
in classExpression
- Parameters:
builder
- string buildersqlFlags
- formatting flags- Returns:
- the specified string builder
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