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/*
* Copyright 2015 Open Networking Laboratory
*
* 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.onosproject.persistence.impl;
import org.mapdb.DB;
import org.onosproject.persistence.PersistentMapBuilder;
import org.onosproject.store.service.Serializer;
import java.util.Map;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;
/**
* Default builder for persistent maps stored in the mapDB local database via the persistence service.
*/
public class DefaultPersistentMapBuilder<K, V> implements PersistentMapBuilder<K, V> {
private final DB localDB;
private String name = null;
private Serializer serializer = null;
public DefaultPersistentMapBuilder(DB localDB) {
checkNotNull(localDB, "The local database cannot be null.");
this.localDB = localDB;
}
public PersistentMapBuilder<K, V> withName(String name) {
this.name = PersistenceManager.MAP_PREFIX + checkNotNull(name);
return this;
}
public PersistentMapBuilder<K, V> withSerializer(Serializer serializer) {
checkArgument(this.serializer == null);
checkNotNull(serializer);
this.serializer = serializer;
return this;
}
public Map<K, V> build() {
checkNotNull(name, "The name must be assigned.");
checkNotNull(serializer, "The key serializer must be assigned.");
return new PersistentMap<K, V>(serializer, localDB, name);
}
}
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