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AbstractCache.javaAPI DocAndroid 1.5 API3191Wed May 06 22:41:56 BST 2009com.google.android.mms.util

AbstractCache

public abstract class AbstractCache extends Object

Fields Summary
private static final String
TAG
private static final boolean
DEBUG
private static final boolean
LOCAL_LOGV
private static final int
MAX_CACHED_ITEMS
private final HashMap
mCacheMap
Constructors Summary
protected AbstractCache()


      
        mCacheMap = new HashMap<K, CacheEntry<V>>();
Methods Summary
public Vget(K key)

        if (LOCAL_LOGV) {
            Log.v(TAG, "Trying to get " + key + " from cache.");
        }

        if (key != null) {
            CacheEntry<V> cacheEntry = mCacheMap.get(key);
            if (cacheEntry != null) {
                cacheEntry.hit++;
                if (LOCAL_LOGV) {
                    Log.v(TAG, key + " hit " + cacheEntry.hit + " times.");
                }
                return cacheEntry.value;
            }
        }
        return null;
public Vpurge(K key)

        if (LOCAL_LOGV) {
            Log.v(TAG, "Trying to purge " + key);
        }

        CacheEntry<V> v = mCacheMap.remove(key);

        if (LOCAL_LOGV) {
            Log.v(TAG, mCacheMap.size() + " items cached.");
        }

        return v != null ? v.value : null;
public voidpurgeAll()

        if (LOCAL_LOGV) {
            Log.v(TAG, "Purging cache, " + mCacheMap.size()
                    + " items dropped.");
        }
        mCacheMap.clear();
public booleanput(K key, V value)

        if (LOCAL_LOGV) {
            Log.v(TAG, "Trying to put " + key + " into cache.");
        }

        if (mCacheMap.size() >= MAX_CACHED_ITEMS) {
            // TODO Should remove the oldest or least hit cached entry
            // and then cache the new one.
            if (LOCAL_LOGV) {
                Log.v(TAG, "Failed! size limitation reached.");
            }
            return false;
        }

        if (key != null) {
            CacheEntry<V> cacheEntry = new CacheEntry<V>();
            cacheEntry.value = value;
            mCacheMap.put(key, cacheEntry);

            if (LOCAL_LOGV) {
                Log.v(TAG, key + " cached, " + mCacheMap.size() + " items total.");
            }
            return true;
        }
        return false;
public intsize()

        return mCacheMap.size();