com.hazelcast.cluster.memberselector.MemberSelectors Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2016, Hazelcast, Inc. All Rights Reserved.
*
* 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 com.hazelcast.cluster.memberselector;
import com.hazelcast.core.Member;
import com.hazelcast.core.MemberSelector;
/**
* A utility class to get {@link com.hazelcast.core.MemberSelector} instances.
*/
public final class MemberSelectors {
/**
* A {@link com.hazelcast.core.MemberSelector} instance that selects only lite members that own no partition
*/
public static final MemberSelector LITE_MEMBER_SELECTOR = new MemberSelector() {
@Override
public boolean select(Member member) {
return member.isLiteMember();
}
};
/**
* A {@link com.hazelcast.core.MemberSelector} instance that selects only data members that own a partition
*/
public static final MemberSelector DATA_MEMBER_SELECTOR = new MemberSelector() {
@Override
public boolean select(Member member) {
return !member.isLiteMember();
}
};
/**
* A {@link com.hazelcast.core.MemberSelector} instance that selects only local members
*/
public static final MemberSelector LOCAL_MEMBER_SELECTOR = new MemberSelector() {
@Override
public boolean select(Member member) {
return member.localMember();
}
};
/**
* A {@link com.hazelcast.core.MemberSelector} instance that selects only remote members
*/
public static final MemberSelector NON_LOCAL_MEMBER_SELECTOR = new MemberSelector() {
@Override
public boolean select(Member member) {
return !member.localMember();
}
};
private MemberSelectors() {
}
/**
* Selects a member when one of the selectors succeed
* @param selectors {@link com.hazelcast.core.MemberSelector} instances to iterate
* @return a {@link com.hazelcast.core.MemberSelector} that selects a member when one of the sub-selectors succeed
*/
public static MemberSelector or(MemberSelector... selectors) {
return new OrMemberSelector(selectors);
}
/**
* Selects a member when all of the selectors succeed
* @param selectors {@link com.hazelcast.core.MemberSelector} instances to iterate
* @return a {@link com.hazelcast.core.MemberSelector} that selects a member when all of the sub-selectors succeed
*/
public static MemberSelector and(MemberSelector... selectors) {
return new AndMemberSelector(selectors);
}
}