Package org.apache.http.impl.client.cache

Class CacheEntryUpdater

java.lang.Object

org.apache.http.impl.client.cache.CacheEntryUpdater

@Contract(threading=IMMUTABLE_CONDITIONAL)
class CacheEntryUpdater
extends java.lang.Object

Update a HttpCacheEntry with new or updated information based on the latest 304 status response from the Server. Use the HttpResponse to perform the update.

Since:

4.1

Field Summary

Fields

Modifier and Type	Field	Description
private ResourceFactory	resourceFactory

Constructor Summary

Constructors

Constructor	Description
CacheEntryUpdater()
CacheEntryUpdater(ResourceFactory resourceFactory)

Method Summary

Modifier and Type	Method	Description
private boolean	entryAndResponseHaveDateHeader(HttpCacheEntry entry, org.apache.http.HttpResponse response)
private boolean	entryDateHeaderNewerThenResponse(HttpCacheEntry entry, org.apache.http.HttpResponse response)
protected org.apache.http.Header[]	mergeHeaders(HttpCacheEntry entry, org.apache.http.HttpResponse response)
HttpCacheEntry	updateCacheEntry(java.lang.String requestId, HttpCacheEntry entry, java.util.Date requestDate, java.util.Date responseDate, org.apache.http.HttpResponse response)	Update the entry with the new information from the response.

Methods inherited from class java.lang.Object

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

Field Detail

resourceFactory

private final ResourceFactory resourceFactory

Constructor Detail

CacheEntryUpdater

CacheEntryUpdater()

CacheEntryUpdater

CacheEntryUpdater(ResourceFactory resourceFactory)

Method Detail

updateCacheEntry

public HttpCacheEntry updateCacheEntry(java.lang.String requestId,
                                       HttpCacheEntry entry,
                                       java.util.Date requestDate,
                                       java.util.Date responseDate,
                                       org.apache.http.HttpResponse response)
                                throws java.io.IOException

Update the entry with the new information from the response. Should only be used for 304 responses.

Parameters:

requestId -

entry - The cache Entry to be updated

requestDate - When the request was performed

responseDate - When the response was gotten

response - The HttpResponse from the backend server call

Returns:

HttpCacheEntry an updated version of the cache entry

Throws:

java.io.IOException - if something bad happens while trying to read the body from the original entry

mergeHeaders

protected org.apache.http.Header[] mergeHeaders(HttpCacheEntry entry,
                                                org.apache.http.HttpResponse response)

entryDateHeaderNewerThenResponse

private boolean entryDateHeaderNewerThenResponse(HttpCacheEntry entry,
                                                 org.apache.http.HttpResponse response)

entryAndResponseHaveDateHeader

private boolean entryAndResponseHaveDateHeader(HttpCacheEntry entry,
                                               org.apache.http.HttpResponse response)