Package org.h2.expression.function
Class FunctionN
- java.lang.Object
-
- org.h2.expression.Expression
-
- org.h2.expression.OperationN
-
- org.h2.expression.function.FunctionN
-
- All Implemented Interfaces:
ExpressionWithVariableParameters
,NamedExpression
,HasSQL
,Typed
- Direct Known Subclasses:
ArrayFunction
,CoalesceFunction
,ConcatFunction
,CryptFunction
,CSVWriteFunction
,DataTypeSQLFunction
,DateTimeFormatFunction
,DBObjectFunction
,HashFunction
,ModeFunction
,RegexpFunction
,StringFunction
,SubstringFunction
,ToCharFunction
,TruncateValueFunction
,XMLFunction
public abstract class FunctionN extends OperationN implements NamedExpression
Function with many arguments.
-
-
Field Summary
-
Fields inherited from class org.h2.expression.OperationN
args, argsCount, 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 Modifier Constructor Description protected
FunctionN(Expression[] args)
-
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, Value v3)
Returns the value of this function.-
Methods inherited from class org.h2.expression.OperationN
addParameter, doneWithParameters, getCost, getSubexpression, getSubexpressionCount, getType, isEverything, mapColumns, optimizeArguments, 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, optimize, 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
-
Methods inherited from interface org.h2.expression.function.NamedExpression
getName
-
-
-
-
Constructor Detail
-
FunctionN
protected FunctionN(Expression[] args)
-
-
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
-
getValue
protected Value getValue(SessionLocal session, Value v1, Value v2, Value v3)
Returns the value of this function.- Parameters:
session
- the sessionv1
- the value of first argument, ornull
v2
- the value of second argument, ornull
v3
- the value of third argument, ornull
- Returns:
- the resulting value
-
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
-
-