a2u.tn.utils.computer.calculator

Class Function

java.lang.Object

a2u.tn.utils.computer.calculator.Function

Direct Known Subclasses:

Count, DateToStr, Distinct, False, First, Last, Like, Max, MaxInRows, Min, Null, Nvl, RowNum, RowsCount, ToDate, True

public abstract class Function
extends Object

Function descriptor

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	Function.Parameter Function parameter description

Field Summary

Fields

Modifier and Type	Field and Description
protected Calculator	calculator

Constructor Summary

Constructors

Constructor and Description
Function(Calculator calculator)

Method Summary

Modifier and Type	Method and Description
abstract String	getName() Return function name for using in query
List<Function.Parameter>	getParameters() Return descriptors for incoming parameters
abstract Object	run(Map<String,Object> paramValues, Object row, int rowIndex, Collection<Object> allRows) Invoke function to execution
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

calculator

protected Calculator calculator

Constructor Detail

Function

public Function(Calculator calculator)

Method Detail

getName

public abstract String getName()

Return function name for using in query

getParameters

public List<Function.Parameter> getParameters()

Return descriptors for incoming parameters

run

public abstract Object run(Map<String,Object> paramValues,
                           Object row,
                           int rowIndex,
                           Collection<Object> allRows)

Invoke function to execution

Parameters:

paramValues - Map with parameters value

row - Data from current row

rowIndex - Index current row in rows

allRows - Collection with all rows

Returns:

result of execution function

toString

public String toString()

Overrides:

toString in class Object