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Cassandra support for Spring Data
/*
* Copyright 2013-2020 the original author or authors.
*
* 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
*
* https://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.springframework.data.cassandra.core.cql;
import java.util.Collection;
import java.util.stream.Collectors;
import java.util.stream.StreamSupport;
import org.springframework.util.Assert;
import com.datastax.driver.core.Host;
import com.datastax.driver.core.exceptions.DriverException;
/**
* {@link HostMapper} to to map hosts into {@link RingMember} objects.
*
* @author David Webb
* @author Mark Paluch
*/
public enum RingMemberHostMapper implements HostMapper {
INSTANCE;
/* (non-Javadoc)
* @see org.springframework.data.cassandra.core.cql.HostMapper#mapHosts(java.util.Iterable)
*/
@Override
public Collection mapHosts(Iterable hosts) throws DriverException {
Assert.notNull(hosts, "Hosts must not be null");
return StreamSupport.stream(hosts.spliterator(), false).map(RingMember::from).collect(Collectors.toList());
}
}