package org.infinispan.cache.impl;
import static java.util.concurrent.TimeUnit.MILLISECONDS;
import java.lang.ref.WeakReference;
import java.util.Arrays;
import java.util.Collection;
import java.util.EnumSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import org.infinispan.AdvancedCache;
import org.infinispan.commons.util.concurrent.NotifyingFuture;
import org.infinispan.container.entries.CacheEntry;
import org.infinispan.context.Flag;
import org.infinispan.filter.KeyValueFilter;
import org.infinispan.iteration.EntryIterable;
import org.infinispan.metadata.EmbeddedMetadata;
import org.infinispan.metadata.Metadata;
import org.infinispan.filter.KeyFilter;
/**
* A decorator to a cache, which can be built with a specific {@link ClassLoader} and a set of {@link Flag}s. This
* {@link ClassLoader} and set of {@link Flag}s will be applied to all cache invocations made via this decorator.
* <p/>
* In addition to cleaner and more readable code, this approach offers a performance benefit to using {@link
* AdvancedCache#with(ClassLoader)} or {@link AdvancedCache#withFlags(org.infinispan.context.Flag...)} APIs, thanks to
* internal optimizations that can be made when the {@link ClassLoader} and {@link Flag} set is unchanging.
*
* @author Manik Surtani
* @author Sanne Grinovero
* @author Tristan Tarrant
* @see AdvancedCache#with(ClassLoader)
* @see AdvancedCache#withFlags(org.infinispan.context.Flag...)
* @since 5.1
*/
public class DecoratedCache<K, V> extends AbstractDelegatingAdvancedCache<K, V> {
private final EnumSet<Flag> flags;
private final WeakReference<ClassLoader> classLoader;
private final CacheImpl<K, V> cacheImplementation;
public DecoratedCache(AdvancedCache<K, V> delegate, ClassLoader classLoader) {
this(delegate, classLoader, null);
}
public DecoratedCache(AdvancedCache<K, V> delegate, Flag... flags) {
this(delegate, null, flags);
}
public DecoratedCache(AdvancedCache<K, V> delegate, ClassLoader classLoader, Flag... flags) {
super(delegate);
if (flags == null || flags.length == 0)
this.flags = null;
else {
this.flags = EnumSet.noneOf(Flag.class);
this.flags.addAll(Arrays.asList(flags));
}
this.classLoader = new WeakReference<ClassLoader>(classLoader);
if (flags == null && classLoader == null)
throw new IllegalArgumentException("There is no point in using a DecoratedCache if neither a ClassLoader nor any Flags are set.");
// Yuk
cacheImplementation = (CacheImpl<K, V>) delegate;
}
private DecoratedCache(CacheImpl<K, V> delegate, ClassLoader classLoader, EnumSet<Flag> newFlags) {
//this constructor is private so we already checked for argument validity
super(delegate);
this.flags = newFlags;
this.classLoader = new WeakReference<ClassLoader>(classLoader);
this.cacheImplementation = delegate;
}
@Override
public AdvancedCache<K, V> with(final ClassLoader classLoader) {
if (classLoader == null) throw new IllegalArgumentException("ClassLoader cannot be null!");
return new DecoratedCache<K, V>(this.cacheImplementation, classLoader, flags);
}
@Override
public AdvancedCache<K, V> withFlags(final Flag... flags) {
if (flags == null || flags.length == 0)
return this;
else {
final List<Flag> flagsToAdd = Arrays.asList(flags);
if (this.flags != null && this.flags.containsAll(flagsToAdd)) {
//we already have all specified flags
return this;
}
else {
if (this.flags==null) {
return new DecoratedCache<K, V>(this.cacheImplementation, this.classLoader.get(), EnumSet.copyOf(flagsToAdd));
}
else {
EnumSet<Flag> newFlags = EnumSet.copyOf(this.flags);
newFlags.addAll(flagsToAdd);
return new DecoratedCache<K, V>(this.cacheImplementation, this.classLoader.get(), newFlags);
}
}
}
}
@Override
public ClassLoader getClassLoader() {
if (this.classLoader == null) {
return cacheImplementation.getClassLoader();
}
else {
return this.classLoader.get();
}
}
@Override
public void stop() {
cacheImplementation.stop(classLoader.get());
}
@Override
public boolean lock(K... keys) {
return cacheImplementation.lock(Arrays.asList(keys), flags, classLoader.get());
}
@Override
public boolean lock(Collection<? extends K> keys) {
return cacheImplementation.lock(keys, flags, classLoader.get());
}
@Override
public void putForExternalRead(K key, V value) {
cacheImplementation.putForExternalRead(key, value, flags, classLoader.get());
}
@Override
public void evict(K key) {
cacheImplementation.evict(key, flags, classLoader.get());
}
@Override
public V put(K key, V value, long lifespan, TimeUnit unit) {
Metadata metadata = new EmbeddedMetadata.Builder()
.lifespan(lifespan, unit)
.maxIdle(cacheImplementation.defaultMetadata.maxIdle(), MILLISECONDS)
.build();
return cacheImplementation.put(key, value, metadata, flags, classLoader.get());
}
@Override
public V putIfAbsent(K key, V value, long lifespan, TimeUnit unit) {
Metadata metadata = new EmbeddedMetadata.Builder()
.lifespan(lifespan, unit)
.maxIdle(cacheImplementation.defaultMetadata.maxIdle(), MILLISECONDS)
.build();
return cacheImplementation.putIfAbsent(key, value, metadata, flags, classLoader.get());
}
@Override
public void putAll(Map<? extends K, ? extends V> map, long lifespan, TimeUnit unit) {
Metadata metadata = new EmbeddedMetadata.Builder()
.lifespan(lifespan, unit)
.maxIdle(cacheImplementation.defaultMetadata.maxIdle(), MILLISECONDS)
.build();
cacheImplementation.putAll(map, metadata, flags, classLoader.get());
}
@Override
public V replace(K key, V value, long lifespan, TimeUnit unit) {
Metadata metadata = new EmbeddedMetadata.Builder()
.lifespan(lifespan, unit)
.maxIdle(cacheImplementation.defaultMetadata.maxIdle(), MILLISECONDS)
.build();
return cacheImplementation.replace(key, value, metadata, flags, classLoader.get());
}
@Override
public boolean replace(K key, V oldValue, V value, long lifespan, TimeUnit unit) {
Metadata metadata = new EmbeddedMetadata.Builder()
.lifespan(lifespan, unit)
.maxIdle(cacheImplementation.defaultMetadata.maxIdle(), MILLISECONDS)
.build();
return cacheImplementation.replace(key, oldValue, value, metadata, flags, classLoader.get());
}
@Override
public V put(K key, V value, long lifespan, TimeUnit lifespanUnit, long maxIdleTime, TimeUnit maxIdleTimeUnit) {
Metadata metadata = new EmbeddedMetadata.Builder()
.lifespan(lifespan, lifespanUnit)
.maxIdle(maxIdleTime, maxIdleTimeUnit)
.build();
return cacheImplementation.put(key, value, metadata, flags, classLoader.get());
}
@Override
public V putIfAbsent(K key, V value, long lifespan, TimeUnit lifespanUnit, long maxIdleTime, TimeUnit maxIdleTimeUnit) {
Metadata metadata = new EmbeddedMetadata.Builder()
.lifespan(lifespan, lifespanUnit)
.maxIdle(maxIdleTime, maxIdleTimeUnit)
.build();
return cacheImplementation.putIfAbsent(key, value, metadata, flags, classLoader.get());
}
@Override
public void putAll(Map<? extends K, ? extends V> map, long lifespan, TimeUnit lifespanUnit, long maxIdleTime, TimeUnit maxIdleTimeUnit) {
Metadata metadata = new EmbeddedMetadata.Builder()
.lifespan(lifespan, lifespanUnit)
.maxIdle(maxIdleTime, maxIdleTimeUnit)
.build();
cacheImplementation.putAll(map, metadata, flags, classLoader.get());
}
@Override
public V replace(K key, V value, long lifespan, TimeUnit lifespanUnit, long maxIdleTime, TimeUnit maxIdleTimeUnit) {
Metadata metadata = new EmbeddedMetadata.Builder()
.lifespan(lifespan, lifespanUnit)
.maxIdle(maxIdleTime, maxIdleTimeUnit)
.build();
return cacheImplementation.replace(key, value, metadata, flags, classLoader.get());
}
@Override
public boolean replace(K key, V oldValue, V value, long lifespan, TimeUnit lifespanUnit, long maxIdleTime, TimeUnit maxIdleTimeUnit) {
Metadata metadata = new EmbeddedMetadata.Builder()
.lifespan(lifespan, lifespanUnit)
.maxIdle(maxIdleTime, maxIdleTimeUnit)
.build();
return cacheImplementation.replace(key, oldValue, value, metadata, flags, classLoader.get());
}
@Override
public NotifyingFuture<V> putAsync(K key, V value) {
return cacheImplementation.putAsync(key, value, cacheImplementation.defaultMetadata, flags, classLoader.get());
}
@Override
public NotifyingFuture<V> putAsync(K key, V value, long lifespan, TimeUnit unit) {
Metadata metadata = new EmbeddedMetadata.Builder()
.lifespan(lifespan, unit)
.maxIdle(cacheImplementation.defaultMetadata.maxIdle(), MILLISECONDS)
.build();
return cacheImplementation.putAsync(key, value, metadata, flags, classLoader.get());
}
@Override
public NotifyingFuture<V> putAsync(K key, V value, long lifespan, TimeUnit lifespanUnit, long maxIdle, TimeUnit maxIdleUnit) {
Metadata metadata = new EmbeddedMetadata.Builder()
.lifespan(lifespan, lifespanUnit)
.maxIdle(maxIdle, maxIdleUnit)
.build();
return cacheImplementation.putAsync(key, value, metadata, flags, classLoader.get());
}
@Override
public NotifyingFuture<Void> putAllAsync(Map<? extends K, ? extends V> data) {
return cacheImplementation.putAllAsync(data, cacheImplementation.defaultMetadata, flags, classLoader.get());
}
@Override
public NotifyingFuture<Void> putAllAsync(Map<? extends K, ? extends V> data, long lifespan, TimeUnit unit) {
Metadata metadata = new EmbeddedMetadata.Builder()
.lifespan(lifespan, unit)
.maxIdle(cacheImplementation.defaultMetadata.maxIdle(), MILLISECONDS)
.build();
return cacheImplementation.putAllAsync(data, metadata, flags, classLoader.get());
}
@Override
public NotifyingFuture<Void> putAllAsync(Map<? extends K, ? extends V> data, long lifespan, TimeUnit lifespanUnit, long maxIdle, TimeUnit maxIdleUnit) {
Metadata metadata = new EmbeddedMetadata.Builder()
.lifespan(lifespan, lifespanUnit)
.maxIdle(maxIdle, maxIdleUnit)
.build();
return cacheImplementation.putAllAsync(data, metadata, flags, classLoader.get());
}
@Override
public NotifyingFuture<Void> clearAsync() {
return cacheImplementation.clearAsync(flags, classLoader.get());
}
@Override
public NotifyingFuture<V> putIfAbsentAsync(K key, V value) {
return cacheImplementation.putIfAbsentAsync(key, value, cacheImplementation.defaultMetadata, flags, classLoader.get());
}
@Override
public NotifyingFuture<V> putIfAbsentAsync(K key, V value, long lifespan, TimeUnit unit) {
Metadata metadata = new EmbeddedMetadata.Builder()
.lifespan(lifespan, unit)
.maxIdle(cacheImplementation.defaultMetadata.maxIdle(), MILLISECONDS)
.build();
return cacheImplementation.putIfAbsentAsync(key, value, metadata, flags, classLoader.get());
}
@Override
public NotifyingFuture<V> putIfAbsentAsync(K key, V value, long lifespan, TimeUnit lifespanUnit, long maxIdle, TimeUnit maxIdleUnit) {
Metadata metadata = new EmbeddedMetadata.Builder()
.lifespan(lifespan, lifespanUnit)
.maxIdle(maxIdle, maxIdleUnit)
.build();
return cacheImplementation.putIfAbsentAsync(key, value, metadata, flags, classLoader.get());
}
@Override
public NotifyingFuture<V> removeAsync(Object key) {
return cacheImplementation.removeAsync(key, flags, classLoader.get());
}
@Override
public NotifyingFuture<Boolean> removeAsync(Object key, Object value) {
return cacheImplementation.removeAsync(key, value, flags, classLoader.get());
}
@Override
public NotifyingFuture<V> replaceAsync(K key, V value) {
return cacheImplementation.replaceAsync(key, value, cacheImplementation.defaultMetadata, flags, classLoader.get());
}
@Override
public NotifyingFuture<V> replaceAsync(K key, V value, long lifespan, TimeUnit unit) {
Metadata metadata = new EmbeddedMetadata.Builder()
.lifespan(lifespan, unit)
.maxIdle(cacheImplementation.defaultMetadata.maxIdle(), MILLISECONDS)
.build();
return cacheImplementation.replaceAsync(key, value, metadata, flags, classLoader.get());
}
@Override
public NotifyingFuture<V> replaceAsync(K key, V value, long lifespan, TimeUnit lifespanUnit, long maxIdle, TimeUnit maxIdleUnit) {
Metadata metadata = new EmbeddedMetadata.Builder()
.lifespan(lifespan, lifespanUnit)
.maxIdle(maxIdle, maxIdleUnit)
.build();
return cacheImplementation.replaceAsync(key, value, metadata, flags, classLoader.get());
}
@Override
public NotifyingFuture<Boolean> replaceAsync(K key, V oldValue, V newValue) {
return cacheImplementation.replaceAsync(key, oldValue, newValue, cacheImplementation.defaultMetadata, flags, classLoader.get());
}
@Override
public NotifyingFuture<Boolean> replaceAsync(K key, V oldValue, V newValue, long lifespan, TimeUnit unit) {
Metadata metadata = new EmbeddedMetadata.Builder()
.lifespan(lifespan, unit)
.maxIdle(cacheImplementation.defaultMetadata.maxIdle(), MILLISECONDS)
.build();
return cacheImplementation.replaceAsync(key, oldValue, newValue, metadata, flags, classLoader.get());
}
@Override
public NotifyingFuture<Boolean> replaceAsync(K key, V oldValue, V newValue, long lifespan, TimeUnit lifespanUnit, long maxIdle, TimeUnit maxIdleUnit) {
Metadata metadata = new EmbeddedMetadata.Builder()
.lifespan(lifespan, lifespanUnit)
.maxIdle(maxIdle, maxIdleUnit)
.build();
return cacheImplementation.replaceAsync(key, oldValue, newValue, metadata, flags, classLoader.get());
}
@Override
public NotifyingFuture<V> getAsync(K key) {
return cacheImplementation.getAsync(key, flags, classLoader.get());
}
@Override
public int size() {
return cacheImplementation.size(flags, classLoader.get());
}
@Override
public boolean isEmpty() {
return cacheImplementation.isEmpty(flags, classLoader.get());
}
@Override
public boolean containsKey(Object key) {
return cacheImplementation.containsKey(key, flags, classLoader.get());
}
@Override
public V get(Object key) {
return cacheImplementation.get(key, flags, classLoader.get());
}
@Override
public V put(K key, V value) {
return cacheImplementation.put(key, value, cacheImplementation.defaultMetadata, flags, classLoader.get());
}
@Override
public V remove(Object key) {
return cacheImplementation.remove(key, flags, classLoader.get());
}
@Override
public void putAll(Map<? extends K, ? extends V> m) {
cacheImplementation.putAll(m, cacheImplementation.defaultMetadata, flags, classLoader.get());
}
@Override
public void clear() {
cacheImplementation.clear(flags, classLoader.get());
}
@Override
public Set<K> keySet() {
return cacheImplementation.keySet(flags, classLoader.get());
}
@Override
public Map<K, V> getGroup(String groupName) {
return cacheImplementation.getGroup(groupName, flags, getClassLoader());
}
@Override
public void removeGroup(String groupName) {
cacheImplementation.removeGroup(groupName, flags, getClassLoader());
}
@Override
public Collection<V> values() {
return cacheImplementation.values(flags, classLoader.get());
}
@Override
public Set<Entry<K, V>> entrySet() {
return cacheImplementation.entrySet(flags, classLoader.get());
}
@Override
public V putIfAbsent(K key, V value) {
return cacheImplementation.putIfAbsent(key, value, cacheImplementation.defaultMetadata, flags, classLoader.get());
}
@Override
public boolean remove(Object key, Object value) {
return cacheImplementation.remove(key, value, flags, classLoader.get());
}
@Override
public boolean replace(K key, V oldValue, V newValue) {
return cacheImplementation.replace(key, oldValue, newValue, cacheImplementation.defaultMetadata, flags, classLoader.get());
}
@Override
public V replace(K key, V value) {
return cacheImplementation.replace(key, value, cacheImplementation.defaultMetadata, flags, classLoader.get());
}
//Not exposed on interface
public EnumSet<Flag> getFlags() {
return flags;
}
@Override
public void addListener(Object listener) {
cacheImplementation.notifier.addListener(listener, classLoader.get());
}
@Override
public void addListener(Object listener, KeyFilter filter) {
cacheImplementation.notifier.addListener(listener, filter, classLoader.get());
}
@Override
public V put(K key, V value, Metadata metadata) {
return cacheImplementation.put(key, value, metadata, flags, classLoader.get());
}
@Override
public NotifyingFuture<V> putAsync(K key, V value, Metadata metadata) {
return cacheImplementation.putAsync(key, value, metadata, flags, classLoader.get());
}
@Override
public V putIfAbsent(K key, V value, Metadata metadata) {
return cacheImplementation.putIfAbsent(key, value, metadata, flags, classLoader.get());
}
@Override
public boolean replace(K key, V oldValue, V value, Metadata metadata) {
return cacheImplementation.replace(key, oldValue, value, metadata, flags, classLoader.get());
}
@Override
public V replace(K key, V value, Metadata metadata) {
return cacheImplementation.replace(key, value, metadata, flags, classLoader.get());
}
@Override
public CacheEntry getCacheEntry(K key) {
return cacheImplementation.getCacheEntry(key, flags, classLoader.get());
}
@Override
public EntryIterable<K, V> filterEntries(KeyValueFilter<? super K, ? super V> filter) {
return cacheImplementation.filterEntries(filter, flags);
}
}