netcharts.pro.datamodel
Class NFDataModelAdapter

java.lang.Object
  netcharts.pro.datamodel.NFDataModelAdapter

All Implemented Interfaces:

NFDataModel

public abstract class NFDataModelAdapter
extends java.lang.Object
implements NFDataModel

This object can be used to abstract multidimensional data. For other known dimensions, please check NFDataModel1D, NFDataModel2D, NFDataModel3D NFDataModelStock, etc.

Field Summary

java.lang.Object	dataObject Constructor provided data object.
boolean	hasMoreData Whether or not the model has more data.
java.lang.Object	userData Allows for information to be stored within the data model.

Constructor Summary

NFDataModelAdapter()
NFDataModelAdapter constructor that does not set the underlying data object.

NFDataModelAdapter(java.lang.Object dataObject)
NFDataModelAdapter constructor that sets the underlying data object.

Method Summary

abstract java.lang.Object	elementAt(int rowIndex) Objects implementing this method are intended to provide access to one dimensional data.
abstract java.lang.Object	elementAt(int row, int nthDimension) Objects implementing this method are intended to provide access to multidimensional data.
abstract int	getDataDimensions() returns the number of dimensions in the data
abstract int	getNRows() returns the number of rows in the data
boolean	hasMoreData() returns false if there is no more data.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

dataObject

public java.lang.Object dataObject

Constructor provided data object.

hasMoreData

public boolean hasMoreData

Whether or not the model has more data.

userData

public java.lang.Object userData

Allows for information to be stored within the data model.

Constructor Detail

NFDataModelAdapter

public NFDataModelAdapter()

NFDataModelAdapter constructor that does not set the underlying data object. Used when the implementing class will not rely on the underlying data object after initialization.

NFDataModelAdapter

public NFDataModelAdapter(java.lang.Object dataObject)

NFDataModelAdapter constructor that sets the underlying data object. Used when the implementing class will rely on the underlying data object after initialization to retrieve the values.

Parameters:

dataObject -

Method Detail

hasMoreData

public boolean hasMoreData()

returns false if there is no more data.

Specified by:

hasMoreData in interface NFDataModel

getNRows

public abstract int getNRows()

returns the number of rows in the data

Specified by:

getNRows in interface NFDataModel

getDataDimensions

public abstract int getDataDimensions()

returns the number of dimensions in the data

Specified by:

getDataDimensions in interface NFDataModel

elementAt

public abstract java.lang.Object elementAt(int rowIndex)

Objects implementing this method are intended to provide access to one dimensional data.

Specified by:

elementAt in interface NFDataModel

elementAt

public abstract java.lang.Object elementAt(int row,
                                           int nthDimension)

Objects implementing this method are intended to provide access to multidimensional data. row indexes start at 0, col indexes start at 0 The netcharts rendering engines expect the following: Two dimensional data is in the form X,Y (X in first dimension, Y in second) Three dimensional data is in the form X,Y,Z Stock data is in the form High, Low, Open, Close Therefore, if a XY Chart requests data for row 2, col 1 it expects the information coming back is a 'Y' value.

Specified by:

elementAt in interface NFDataModel