import jalview.bin.Cache;
-import java.util.Arrays;
import java.util.Hashtable;
import java.util.LinkedHashSet;
-import java.util.List;
/**
* A singleton class used for querying and persisting cache items.
*/
public class AppCache
{
- private static AppCache instance = null;
+ public static final String DEFAULT_LIMIT = "99";
- private Hashtable<String, LinkedHashSet<String>> cacheItems;
+ public static final String CACHE_DELIMITER = ";";
+
+ private static AppCache instance = null;
private static final String DEFAULT_LIMIT_KEY = ".DEFAULT_LIMIT";
- private static final String DEFAULT_LIMIT = "99";
- private static final String CACHE_DELIMITER = ";";
+
+ private Hashtable<String, LinkedHashSet<String>> cacheItems;
private AppCache()
{
/**
- * Returns an singleton instance of AppCache
+ * Returns a singleton instance of AppCache
*
* @return
*/
return instance;
}
- /**
- * Method for initialising cache items for a given cache key
- *
- * @param cacheKey
- */
- public void initCache(String cacheKey)
- {
- String separatedStr = Cache.getProperty(cacheKey);
- if (separatedStr == null || separatedStr.isEmpty())
- {
- return;
- }
- List<String> persistedCacheItems = Arrays.asList(separatedStr.split(CACHE_DELIMITER));
-
- LinkedHashSet<String> foundCacheItems = cacheItems.get(cacheKey);
- if (foundCacheItems == null)
- {
- foundCacheItems = new LinkedHashSet<String>();
- }
-
- for (String cacheItem : persistedCacheItems)
- {
- foundCacheItems.add(cacheItem);
- }
- cacheItems.put(cacheKey, foundCacheItems);
- }
/**
* Method for persisting cache items for a given cache key
}
/**
- * Method for deleted cached items for a given cache key
+ * Method for deleting cached items for a given cache key
*
* @param cacheKey
+ * the cache key
*/
public void deleteCacheItems(String cacheKey)
{
* Method for obtaining the preset maximum cache limit for a given cache key
*
* @param cacheKey
- * @return
+ * the cache key
+ * @return the max number of items that could be cached
*/
- public String getCacheLmit(String cacheKey)
+ public String getCacheLimit(String cacheKey)
{
String uniqueKey = cacheKey + DEFAULT_LIMIT_KEY;
return Cache.getDefault(uniqueKey, DEFAULT_LIMIT);
* Method for updating the preset maximum cache limit for a given cache key
*
* @param cacheKey
+ * the cache key
* @param newLimit
+ * the max number of items that could be cached for the given cache
+ * key
* @return
*/
- public int updateCacheLimit(String cacheKey, String newLimit)
+ public int updateCacheLimit(String cacheKey, int newUserLimit)
{
+ String newLimit = String.valueOf(newUserLimit);
String uniqueKey = cacheKey + DEFAULT_LIMIT_KEY;
- String formerLimit = getCacheLmit(cacheKey);
+ String formerLimit = getCacheLimit(cacheKey);
if (newLimit != null && !newLimit.isEmpty()
&& !formerLimit.equals(newLimit))
{
* structure
*
* @param cacheKey
+ * the cache key
* @param cacheItems
+ * the items to add to the cache
*/
- public void putCache(String cacheKey, LinkedHashSet<String> cacheItems)
+ public void putCache(String cacheKey, LinkedHashSet<String> newCacheItems)
{
- getCacheItems().put(cacheKey, cacheItems);
+ cacheItems.put(cacheKey, newCacheItems);
}
- /**
- * Getter method for obtaining cache data structure
- *
- * @return
- */
- Hashtable<String, LinkedHashSet<String>> getCacheItems()
- {
- return cacheItems;
- }
}