Android Open Source - android-blog Cache






From Project

Back to project page android-blog.

License

The source code is released under:

MIT License

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Java Source Code

/*
 * Copyright (C) 2011 The Android Open Source Project
 */*from   w  w  w  .  jav a  2  s  .co m*/
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.volley;

import java.util.Collections;
import java.util.Map;

/**
 * An interface for a cache keyed by a String with a byte array as data.
 */
public interface Cache {
    /**
     * Retrieves an entry from the cache.
     * @param key Cache key
     * @return An {@link Entry} or null in the event of a cache miss
     */
    public Entry get(String key);

    /**
     * Adds or replaces an entry to the cache.
     * @param key Cache key
     * @param entry Data to store and metadata for cache coherency, TTL, etc.
     */
    public void put(String key, Entry entry);

    /**
     * Performs any potentially long-running actions needed to initialize the cache;
     * will be called from a worker thread.
     */
    public void initialize();

    /**
     * Invalidates an entry in the cache.
     * @param key Cache key
     * @param fullExpire True to fully expire the entry, false to soft expire
     */
    public void invalidate(String key, boolean fullExpire);

    /**
     * Removes an entry from the cache.
     * @param key Cache key
     */
    public void remove(String key);

    /**
     * Empties the cache.
     */
    public void clear();

    /**
     * Data and metadata for an entry returned by the cache.
     */
    public static class Entry {
        /** The data returned from cache. */
        public byte[] data;

        /** ETag for cache coherency. */
        public String etag;

        /** Date of this response as reported by the server. */
        public long serverDate;

        /** TTL for this record. */
        public long ttl;

        /** Soft TTL for this record. */
        public long softTtl;

        /** Immutable response headers as received from server; must be non-null. */
        public Map<String, String> responseHeaders = Collections.emptyMap();

        /** True if the entry is expired. */
        public boolean isExpired() {
            return this.ttl < System.currentTimeMillis();
        }

        /** True if a refresh is needed from the original data source. */
        public boolean refreshNeeded() {
            return this.softTtl < System.currentTimeMillis();
        }
    }

}




Java Source Code List

com.android.volley.AuthFailureError.java
com.android.volley.CacheDispatcher.java
com.android.volley.Cache.java
com.android.volley.DefaultRetryPolicy.java
com.android.volley.ExecutorDelivery.java
com.android.volley.NetworkDispatcher.java
com.android.volley.NetworkError.java
com.android.volley.NetworkResponse.java
com.android.volley.Network.java
com.android.volley.NoConnectionError.java
com.android.volley.ParseError.java
com.android.volley.RequestQueue.java
com.android.volley.Request.java
com.android.volley.ResponseDelivery.java
com.android.volley.Response.java
com.android.volley.RetryPolicy.java
com.android.volley.ServerError.java
com.android.volley.TimeoutError.java
com.android.volley.VolleyError.java
com.android.volley.VolleyLog.java
com.android.volley.toolbox.AndroidAuthenticator.java
com.android.volley.toolbox.Authenticator.java
com.android.volley.toolbox.BasicNetwork.java
com.android.volley.toolbox.ByteArrayPool.java
com.android.volley.toolbox.ClearCacheRequest.java
com.android.volley.toolbox.DiskBasedCache.java
com.android.volley.toolbox.HttpClientStack.java
com.android.volley.toolbox.HttpHeaderParser.java
com.android.volley.toolbox.HttpStack.java
com.android.volley.toolbox.HurlStack.java
com.android.volley.toolbox.ImageLoader.java
com.android.volley.toolbox.ImageRequest.java
com.android.volley.toolbox.JsonArrayRequest.java
com.android.volley.toolbox.JsonObjectRequest.java
com.android.volley.toolbox.JsonRequest.java
com.android.volley.toolbox.NetworkImageView.java
com.android.volley.toolbox.NoCache.java
com.android.volley.toolbox.PoolingByteArrayOutputStream.java
com.android.volley.toolbox.RequestFuture.java
com.android.volley.toolbox.StringRequest.java
com.android.volley.toolbox.Volley.java
org.kevinmrohr.android_blog.activity.BlogViewActivity$$ViewInjector.java
org.kevinmrohr.android_blog.activity.BlogViewActivity.java
org.kevinmrohr.android_blog.activity.ListBlogsActivity$$InjectAdapter.java
org.kevinmrohr.android_blog.activity.ListBlogsActivity$$ViewInjector.java
org.kevinmrohr.android_blog.activity.ListBlogsActivity.java
org.kevinmrohr.android_blog.adapter.BindingAdapter.java
org.kevinmrohr.android_blog.adapter.BlogListAdapter.java
org.kevinmrohr.android_blog.async.BlogPostLoader.java
org.kevinmrohr.android_blog.fragments.BlogDetailFragment.java
org.kevinmrohr.android_blog.fragments.BlogListFragment.java
org.kevinmrohr.android_blog.model.BlogPost.java
org.kevinmrohr.android_blog.module.ListBlogsModule$$ModuleAdapter.java
org.kevinmrohr.android_blog.module.ObjectMappingModule.java
org.kevinmrohr.android_blog.serialization.CustomDateDeserializer.java
org.kevinmrohr.android_blog.serialization.CustomDateSerializer.java
org.kevinmrohr.android_blog.service.BlogPostService.java