本文整理汇总了Java中java.util.concurrent.ConcurrentHashMap.clear方法的典型用法代码示例。如果您正苦于以下问题：Java ConcurrentHashMap.clear方法的具体用法？Java ConcurrentHashMap.clear怎么用？Java ConcurrentHashMap.clear使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类java.util.concurrent.ConcurrentHashMap的用法示例。
在下文中一共展示了ConcurrentHashMap.clear方法的9个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: testEquals
import java.util.concurrent.ConcurrentHashMap; //导入方法依赖的package包/类
/**
* Maps with same contents are equal
*/
public void testEquals() {
ConcurrentHashMap map1 = map5();
ConcurrentHashMap map2 = map5();
assertEquals(map1, map2);
assertEquals(map2, map1);
map1.clear();
assertFalse(map1.equals(map2));
assertFalse(map2.equals(map1));
}
示例2: getCache
import java.util.concurrent.ConcurrentHashMap; //导入方法依赖的package包/类
/**
* 获取缓存数据
* @param key
* @return
* 未设置或缓存有效时间已过都会返回null
*/
public static Object getCache(String key) {
synchronized (key.intern()){
if (StringUtils.isNotEmpty(key)){
ConcurrentHashMap<Long,CacheValue> cache = CATCH.get(key);
if (cache != null){
Optional<Long> cacheTime = cache.keySet().stream().findFirst();
if (cacheTime.isPresent()){
CacheValue cacheValue = cache.get(cacheTime.get());
long now = System.currentTimeMillis();
if ((now - cacheTime.get()) < (cacheValue.getValidTime() * 1000)){
return cacheValue.getValue();
}else {
//缓存失效
cache.clear();
CATCH.put(key,cache);
}
}
}
}
return null;
}
}
示例3: clear
import java.util.concurrent.ConcurrentHashMap; //导入方法依赖的package包/类
public void clear() {
if (k1_k2V_map.size() > 0) {
for (ConcurrentHashMap<K2, V> k2V_map : k1_k2V_map.values()) {
k2V_map.clear();
}
k1_k2V_map.clear();
}
}
示例4: setCache
import java.util.concurrent.ConcurrentHashMap; //导入方法依赖的package包/类
/**
* 设置缓存（指定缓存有效时间）
* @param key
* @param value
* @param validTime
*/
public static void setCache(String key,Object value,int validTime) {
synchronized (key.intern()){
if (StringUtils.isNotEmpty(key) && value != null){
ConcurrentHashMap<Long,CacheValue> cache = CATCH.get(key);
if (cache == null){
cache = new ConcurrentHashMap<>();
}
cache.clear();
cache.put(System.currentTimeMillis(),new CacheValue(validTime,value));
CATCH.put(key,cache);
}
}
}
示例5: disconnected
import java.util.concurrent.ConcurrentHashMap; //导入方法依赖的package包/类
@Override
public void disconnected(ConnectionPool parent, PooledConnection con, boolean finalizing) {
@SuppressWarnings("unchecked")
ConcurrentHashMap<CacheKey,CachedStatement> statements =
(ConcurrentHashMap<CacheKey,CachedStatement>)con.getAttributes().get(STATEMENT_CACHE_ATTR);
if (statements!=null) {
for (Map.Entry<CacheKey, CachedStatement> p : statements.entrySet()) {
closeStatement(p.getValue());
}
statements.clear();
}
super.disconnected(parent, con, finalizing);
}
示例6: manageCache
import java.util.concurrent.ConcurrentHashMap; //导入方法依赖的package包/类
private <T> T manageCache(ConcurrentHashMap<Integer, WithUseCount<T>> cache, Accessor<T> accessor, int n, FieldSelector fieldSelector, int limit) throws IOException
{
Integer key = Integer.valueOf(n);
WithUseCount<T> value = cache.get(key);
if (value == null)
{
T made = accessor.get(n, fieldSelector);
value = new WithUseCount<T>(made, n);
cache.put(key, value);
// resize
if (limit >= 0)
{
if (cache.size() >= limit)
{
HashMap<Integer, WithUseCount<T>> keep = new HashMap<Integer, WithUseCount<T>>();
WithUseCount<T>[] existing = new WithUseCount[0];
synchronized (cache)
{
existing = cache.values().toArray(existing);
cache.clear();
}
Arrays.sort(existing);
for (WithUseCount<T> current : existing)
{
keep.put(Integer.valueOf(current.doc), current);
if ((current.count.get() == 0) || (keep.size() > (limit / 4)))
{
break;
}
}
keep.put(key, value);
cache.putAll(keep);
}
}
}
else
{
value.count.getAndIncrement();
}
return value.object;
}
开发者ID:Alfresco，项目名称:alfresco-repository，代码行数:45，代码来源:ReferenceCountingReadOnlyIndexReaderFactory.java
示例7: removeCachedCalls
import java.util.concurrent.ConcurrentHashMap; //导入方法依赖的package包/类
public void removeCachedCalls(String cacheName) {
ConcurrentHashMap<UUID, CacheCallData> cachedCalls = mTaggedCacheCalls.get(cacheName);
if (cachedCalls != null) cachedCalls.clear();
}
示例8: testClear
import java.util.concurrent.ConcurrentHashMap; //导入方法依赖的package包/类
/**
* clear removes all pairs
*/
public void testClear() {
ConcurrentHashMap map = map5();
map.clear();
assertEquals(0, map.size());
}
示例9: process
import java.util.concurrent.ConcurrentHashMap; //导入方法依赖的package包/类
@Override
public void process(ConcurrentHashMap<K, V> impl) {
impl.clear();
}