netcharts.pro.datamodel
Class NFDataModelTime

java.lang.Object
  netcharts.pro.datamodel.NFDataModelTime

All Implemented Interfaces:

NFDataModel

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

This abstract class should be used to provide an interface for time data sets from an underlying data object. The underlying data object is passed into the constructor, and then is accessible directly in order to support get[Data] and getNumPoints() method calls. An example is shown here:

 Object datao[][] = makeData();

 NFDataModelTime foodata = new NFDataModelTime(datao) {

     public Object getStartDateTime(int row) {
         Object o[][] = (Object[][])dataObject;
         return o[row][0];
     }
     public Object getStopDateTime(int row) {
         Object o[][] = (Object[][])dataObject;
         return o[row][1];
     }
     public Object getTaskText(int row) {
         Object o[][] = (Object[][])dataObject;
         return o[row][2];
     }
     public Object getTaskColor(int row) {
         Object o[][] = (Object[][])dataObject;
         return o[row][3];
     }
     public Object getTaskTextStyle(int row) {
         Object o[][] = (Object[][])dataObject;
         return o[row][4];
     }
     public int getNumPoints() {
         return ((Object[])dataObject).length;
     }
 };
 

In the example above, the underlying data object is a multidimensional object array, but it could be a JDBC result set, DOM object, or other data object. This data may be passed to any instance of NFVector via the loadDataModel call.

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

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

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

Method Summary

java.lang.Object	elementAt(int rowIndex) Used internally
java.lang.Object	elementAt(int row, int col) Used internally
int	getDataDimensions() Return the number of data dimensions
int	getNRows() Used internally
abstract int	getNumTasks() Return the total number of points available in the data object
abstract java.lang.Object	getStartDateTime(int row) Return the task start date/time
abstract java.lang.Object	getStopDateTime(int row) Return the task stop date/time
abstract java.lang.Object	getTaskColor(int row) Return the task color or null to return the default.
abstract java.lang.Object	getTaskText(int row) Return the text to show on the task
abstract java.lang.Object	getTaskTextStyle(int row) Return the task color or null to return the default.
boolean	hasMoreData() Returns whether or not there is 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

NFDataModelTime

public NFDataModelTime()

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

NFDataModelTime

public NFDataModelTime(java.lang.Object dataObject)

NFDataModelTime 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

getStartDateTime

public abstract java.lang.Object getStartDateTime(int row)

Return the task start date/time

getStopDateTime

public abstract java.lang.Object getStopDateTime(int row)

Return the task stop date/time

getTaskText

public abstract java.lang.Object getTaskText(int row)

Return the text to show on the task

getTaskColor

public abstract java.lang.Object getTaskColor(int row)

Return the task color or null to return the default.

getTaskTextStyle

public abstract java.lang.Object getTaskTextStyle(int row)

Return the task color or null to return the default.

getNumTasks

public abstract int getNumTasks()

Return the total number of points available in the data object

getDataDimensions

public int getDataDimensions()

Return the number of data dimensions

Specified by:

getDataDimensions in interface NFDataModel

hasMoreData

public boolean hasMoreData()

Returns whether or not there is more data. This is necessary where the number of rows being returned does not correspond to the underlying data set.

Specified by:

hasMoreData in interface NFDataModel

elementAt

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

Used internally

Specified by:

elementAt in interface NFDataModel

elementAt

public final java.lang.Object elementAt(int row,
                                        int col)

Used internally

Specified by:

elementAt in interface NFDataModel

getNRows

public final int getNRows()

Used internally

Specified by:

getNRows in interface NFDataModel