org.drools.core.common.RuleBasePartitionId Maven / Gradle / Ivy
/*
* Copyright 2010 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.drools.core.common;
import org.kie.api.concurrent.KieExecutors;
import java.io.Serializable;
import java.util.concurrent.atomic.AtomicInteger;
/**
* A class to identify RuleBase partitions
*/
public final class RuleBasePartitionId implements Serializable {
private static final long serialVersionUID = 510l;
public static final int PARALLEL_PARTITIONS_NUMBER = KieExecutors.Pool.SIZE;
public static final RuleBasePartitionId MAIN_PARTITION = new RuleBasePartitionId( 0 );
private static final AtomicInteger PARTITION_COUNTER = new AtomicInteger( 1 );
private final int id;
private RuleBasePartitionId( int id ) {
this.id = id;
}
public int getId() {
return id;
}
public int getParallelEvaluationSlot() {
return id % PARALLEL_PARTITIONS_NUMBER;
}
@Override
public int hashCode() {
return id;
}
@Override
public boolean equals(Object obj) {
return this == obj || (obj instanceof RuleBasePartitionId && id == ((RuleBasePartitionId)obj).id);
}
public String toString() {
return "Partition(" + (id == 0 ? "MAIN" : id) + ")";
}
public static RuleBasePartitionId createPartition() {
return new RuleBasePartitionId( PARTITION_COUNTER.getAndIncrement() );
}
}