org.apache.http.impl.client.cache

Class CacheKeyGenerator

java.lang.Object

org.apache.http.impl.client.cache.CacheKeyGenerator

@Contract(threading=IMMUTABLE)
class CacheKeyGenerator
extends java.lang.Object

Since:

4.1

Field Summary

Fields

Modifier and Type	Field and Description
private static java.net.URI	BASE_URI

Constructor Summary

Constructors

Constructor and Description
CacheKeyGenerator()

Method Summary

Modifier and Type	Method and Description
private int	canonicalizePort(int port, java.lang.String protocol)
java.lang.String	canonicalizeUri(java.lang.String uri)
protected java.lang.String	getFullHeaderValue(org.apache.http.Header[] headers)
java.lang.String	getURI(org.apache.http.HttpHost host, org.apache.http.HttpRequest req) For a given HttpHost and HttpRequest get a URI from the pair that I can use as an identifier KEY into my HttpCache
java.lang.String	getVariantKey(org.apache.http.HttpRequest req, HttpCacheEntry entry) Compute a "variant key" from the headers of a given request that are covered by the Vary header of a given cache entry.
java.lang.String	getVariantURI(org.apache.http.HttpHost host, org.apache.http.HttpRequest req, HttpCacheEntry entry) For a given HttpHost and HttpRequest if the request has a VARY header - I need to get an additional URI from the pair of host and request so that I can also store the variant into my HttpCache.
private boolean	isRelativeRequest(org.apache.http.HttpRequest req)

Methods inherited from class java.lang.Object

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

Field Detail

BASE_URI

private static final java.net.URI BASE_URI

Constructor Detail

CacheKeyGenerator

CacheKeyGenerator()

Method Detail

getURI

public java.lang.String getURI(org.apache.http.HttpHost host,
                               org.apache.http.HttpRequest req)

For a given HttpHost and HttpRequest get a URI from the pair that I can use as an identifier KEY into my HttpCache

Parameters:

host - The host for this request

req - the HttpRequest

Returns:

String the extracted URI

canonicalizeUri

public java.lang.String canonicalizeUri(java.lang.String uri)

canonicalizePort

private int canonicalizePort(int port,
                             java.lang.String protocol)

isRelativeRequest

private boolean isRelativeRequest(org.apache.http.HttpRequest req)

getFullHeaderValue

protected java.lang.String getFullHeaderValue(org.apache.http.Header[] headers)

getVariantURI

public java.lang.String getVariantURI(org.apache.http.HttpHost host,
                                      org.apache.http.HttpRequest req,
                                      HttpCacheEntry entry)

For a given HttpHost and HttpRequest if the request has a VARY header - I need to get an additional URI from the pair of host and request so that I can also store the variant into my HttpCache.

Parameters:

host - The host for this request

req - the HttpRequest

entry - the parent entry used to track the variants

Returns:

String the extracted variant URI

getVariantKey

public java.lang.String getVariantKey(org.apache.http.HttpRequest req,
                                      HttpCacheEntry entry)

Compute a "variant key" from the headers of a given request that are covered by the Vary header of a given cache entry. Any request whose varying headers match those of this request should have the same variant key.

Parameters:

req - originating request

entry - cache entry in question that has variants

Returns:

a String variant key