Package de.juplo.httpresources

Class HttpResourceFetcher

java.lang.Object

de.juplo.httpresources.HttpResourceFetcher

public class HttpResourceFetcher
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static int	DEFAULT_TTL

Constructor Summary

Constructors

Constructor	Description
HttpResourceFetcher(org.springframework.http.client.ClientHttpRequestFactory factory, org.springframework.cache.Cache cache, Clock clock)
HttpResourceFetcher(org.springframework.http.client.ClientHttpRequestFactory factory, org.springframework.cache.Cache cache, Clock clock, int defaultTTL, int minTTL, boolean serveStale)

Method Summary

Modifier and Type	Method	Description
de.juplo.httpresources.HttpData	fetch(URI uri, de.juplo.httpresources.HttpData data)	Fetches the remote resource and reports, if it was modified.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_TTL

public static final int DEFAULT_TTL

See Also:

Constant Field Values

Constructor Detail

HttpResourceFetcher

public HttpResourceFetcher(org.springframework.http.client.ClientHttpRequestFactory factory,
                           org.springframework.cache.Cache cache,
                           Clock clock)

HttpResourceFetcher

public HttpResourceFetcher(org.springframework.http.client.ClientHttpRequestFactory factory,
                           org.springframework.cache.Cache cache,
                           Clock clock,
                           int defaultTTL,
                           int minTTL,
                           boolean serveStale)

Parameters:

factory -

clock -

defaultTTL - default time to live in milliseconds Default TTL, if no according information is present in the HTTP-headers. If set to 0, caching will be disabled, if no according HTTP-headers are present.

minTTL - the minimum time to live, if caching is enabled A minimum TTL, that will overwrite the time to live, that was extracted from the HTTP-headers. The minimum TTL is only applied, if the default TTL is set to a value greater than zero, hence enabling caching by default.

serveStale -

Method Detail

fetch

public de.juplo.httpresources.HttpData fetch(URI uri,
                                             de.juplo.httpresources.HttpData data)

Fetches the remote resource and reports, if it was modified. This method fetches the remote resource, if was not already fetched. If the resource was already fetched, it revalidates it, if necessary.

Returns:

true, if the resource has changed or was fetched for the first time, otherwise false