com.sage.orion.sdata.servlet
Class PagingInfo

java.lang.Object
  com.sage.orion.sdata.servlet.PagingInfo

Direct Known Subclasses:

IndexedPagingInfo, KeyedPagingInfo, SDataExternalPagingInfo

public abstract class PagingInfo
extends java.lang.Object

An interface responsible for helping out in creating paging links.

This sits between the ResourceKindImpl and the ResponseGenerator.

The ResourceKindImpl knows the data that it is placing into the PagingInfo. It knows if it understands indexed paging or only query-based paging. It knows if it can get the number of records for a Last link or not. Etc. However it does not know what a URL looks like; that is why we have a marshaling layer.

The ResponseGenerator is part of the marshaling layer and so understands URLS etc. but does not know the implementation.

So the pattern I am going to use for now is as follows:

• The ResourceKindImpl is responsible for creating the appropriate PagingInfo object with the data about record numbers, keys etc.
• The ResponseGenerator will push the Resources URL to the PagingInfo
• The PagingInfo will combine the two to provide the link URLS back to the ResponseGenerator as it asks for them.

Field Summary

protected java.lang.String

resourceSetURL The basic URL for the resource set

Constructor Summary

PagingInfo()

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

resourceSetURL

protected java.lang.String resourceSetURL

The basic URL for the resource set

Constructor Detail

PagingInfo

public PagingInfo()