package org.infinispan.filter;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.util.Collections;
import java.util.Set;
import org.infinispan.commons.io.UnsignedNumeric;
import org.infinispan.commons.marshall.AbstractExternalizer;
import org.infinispan.factories.ComponentRegistry;
import org.infinispan.factories.annotations.Inject;
import org.infinispan.marshall.core.Ids;
import org.infinispan.metadata.Metadata;
/**
* Allows AND-composing several key/value filters.
*
* @author wburns
* @since 7.0
*/
public class CompositeKeyValueFilter<K, V> implements KeyValueFilter<K, V> {
private final KeyValueFilter<? super K, ? super V> filters[];
public CompositeKeyValueFilter(KeyValueFilter<? super K, ? super V>... filters) {
this.filters = filters;
}
@Override
public boolean accept(K key, V value, Metadata metadata) {
for (KeyValueFilter<? super K, ? super V> filter : filters) {
if (!filter.accept(key, value, metadata)) {
return false;
}
}
return true;
}
@Inject
protected void injectDependencies(ComponentRegistry cr) {
for (KeyValueFilter<? super K, ? super V> f : filters) {
cr.wireDependencies(f);
}
}
public static class Externalizer extends AbstractExternalizer<CompositeKeyValueFilter> {
@Override
public Set<Class<? extends CompositeKeyValueFilter>> getTypeClasses() {
return Collections.singleton(CompositeKeyValueFilter.class);
}
@Override
public void writeObject(ObjectOutput output, CompositeKeyValueFilter object) throws IOException {
UnsignedNumeric.writeUnsignedInt(output, object.filters.length);
for (KeyValueFilter filter : object.filters) {
output.writeObject(filter);
}
}
@Override
public CompositeKeyValueFilter readObject(ObjectInput input) throws IOException, ClassNotFoundException {
int filtersSize = UnsignedNumeric.readUnsignedInt(input);
KeyValueFilter[] filters = new KeyValueFilter[filtersSize];
for (int i = 0; i < filtersSize; ++i) {
filters[i] = (KeyValueFilter)input.readObject();
}
return new CompositeKeyValueFilter(filters);
}
@Override
public Integer getId() {
return Ids.COMPOSITE_KEY_VALUE_FILTER;
}
}
}