package org.infinispan.notifications.cachelistener.filter;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.util.Collections;
import java.util.Objects;
import java.util.Set;
import org.infinispan.commons.marshall.AbstractExternalizer;
import org.infinispan.factories.ComponentRegistry;
import org.infinispan.factories.annotations.Inject;
import org.infinispan.filter.KeyFilter;
import org.infinispan.marshall.core.Ids;
import org.infinispan.metadata.Metadata;
/**
* CacheEventFilter that implements it's filtering solely on the use of the provided KeyFilter
*
* @author wburns
* @since 7.0
*/
public class KeyFilterAsCacheEventFilter<K> implements CacheEventFilter<K, Object> {
private final KeyFilter<? super K> filter;
public KeyFilterAsCacheEventFilter(KeyFilter<? super K> filter) {
this.filter = Objects.requireNonNull(filter);
}
@Override
public boolean accept(K key, Object oldValue, Metadata oldMetadata, Object newValue, Metadata newMetadata, EventType eventType) {
return filter.accept(key);
}
@Inject
protected void injectDependencies(ComponentRegistry cr) {
cr.wireDependencies(filter);
}
public static class Externalizer extends AbstractExternalizer<KeyFilterAsCacheEventFilter> {
@Override
public Set<Class<? extends KeyFilterAsCacheEventFilter>> getTypeClasses() {
return Collections.singleton(KeyFilterAsCacheEventFilter.class);
}
@Override
public void writeObject(ObjectOutput output, KeyFilterAsCacheEventFilter object) throws IOException {
output.writeObject(object.filter);
}
@Override
public KeyFilterAsCacheEventFilter readObject(ObjectInput input) throws IOException, ClassNotFoundException {
return new KeyFilterAsCacheEventFilter((KeyFilter)input.readObject());
}
@Override
public Integer getId() {
return Ids.KEY_FILTER_AS_CACHE_EVENT_FILTER;
}
}
}