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;
/**
* Allows AND-composing several filters.
*
* @author Mircea Markus
* @since 6.0
*/
public class CompositeKeyFilter<K> implements KeyFilter<K> {
private final KeyFilter<? super K>[] filters;
public CompositeKeyFilter(KeyFilter<? super K>... filters) {
this.filters = filters;
}
@Override
public boolean accept(K key) {
for (KeyFilter<? super K> k : filters)
if (!k.accept(key)) return false;
return true;
}
@Inject
protected void injectDependencies(ComponentRegistry cr) {
for (KeyFilter<? super K> f : filters) {
cr.wireDependencies(f);
}
}
public static class Externalizer extends AbstractExternalizer<CompositeKeyFilter> {
@Override
public Set<Class<? extends CompositeKeyFilter>> getTypeClasses() {
return Collections.singleton(CompositeKeyFilter.class);
}
@Override
public void writeObject(ObjectOutput output, CompositeKeyFilter object) throws IOException {
UnsignedNumeric.writeUnsignedInt(output, object.filters.length);
for (KeyFilter filter : object.filters) {
output.writeObject(filter);
}
}
@Override
public CompositeKeyFilter readObject(ObjectInput input) throws IOException, ClassNotFoundException {
int filtersSize = UnsignedNumeric.readUnsignedInt(input);
KeyFilter[] filters = new KeyFilter[filtersSize];
for (int i = 0; i < filtersSize; ++i) {
filters[i] = (KeyFilter)input.readObject();
}
return new CompositeKeyFilter(filters);
}
@Override
public Integer getId() {
return Ids.COMPOSITE_KEY_FILTER;
}
}
}