chartworks.es.plugin
Class CachePlugIn

java.lang.Object
  |
  +--chartworks.es.plugin.NDSPlugIn
        |
        +--chartworks.es.plugin.NDSPlugInAdapter
              |
              +--chartworks.es.plugin.CachePlugIn

All Implemented Interfaces:

NDSDataInterface

public class CachePlugIn

extends NDSPlugInAdapter

The CachePlugIn is used to provide a seamless way to retrieve externally generated or manipulated data for use by NetCharts Server data clients (charts, tables, toolkit API).

Constructor Summary

CachePlugIn(java.lang.String name)
Constructor

Method Summary

java.lang.Object[][]

retrieveData(java.net.URL fileBase, java.util.Hashtable serverParams, java.util.Hashtable clientParams) This method should only be called if there is no data in the cache or no cacheKey was passed.

Methods inherited from class chartworks.es.plugin.NDSPlugInAdapter

getContentType, getData, loadData, pivotData, processData

Methods inherited from class chartworks.es.plugin.NDSPlugIn

addListingEntry, addObserver, createPlugIn, getPlugIn, hasNewData, removeObserver

Methods inherited from class java.lang.Object

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

Constructor Detail

CachePlugIn

public CachePlugIn(java.lang.String name)

Constructor

Method Detail

retrieveData

public java.lang.Object[][] retrieveData(java.net.URL fileBase,
                                         java.util.Hashtable serverParams,
                                         java.util.Hashtable clientParams)

This method should only be called if there is no data in the cache or no cacheKey was passed. In that case, this method will check the hashtable for a defaultData key, and return any data in it.

Overrides:

retrieveData in class NDSPlugInAdapter

Parameters:

fileBase - URL representing directory where the NDS parameter file is located.

serverParams - A hashtable of properties from the parameter file.

clientParams - A hashtable of properties passed on the query string - If this is a ".ndx" clientParams will be the same as serverParams.