/**
*
* Copyright (c) 2006-2017, Speedment, 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.speedment.runtime.config.identifier;
import com.speedment.runtime.config.identifier.trait.HasDbmsName;
import com.speedment.runtime.config.internal.identifier.DbmsIdentifierImpl;
import com.speedment.runtime.config.util.DocumentDbUtil;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
/**
* Identifies a particular Schema. The identifier is an immutable non-complex
* object that only contains the names of the nodes required to uniquely
* identify it in the database.
* <p>
* To find the actual documents referred to by the identifier, the following
* utility methods can be used:
* <ul>
*
* <li>DocumentDbUtil#referencedSchema(Project, Project, TableIdentifier)
* <li>DocumentDbUtil#referencedDbms(Project, TableIdentifier)
* </ul>
*
* @param <ENTITY> the entity type
*
* @author Per Minborg
* @since 3.0.1
* @see DocumentDbUtil
*/
public interface DbmsIdentifier<ENTITY> extends HasDbmsName {
class Hidden {
private static final Map<DbmsIdentifier<?>, DbmsIdentifier<?>> INTERNED = new ConcurrentHashMap<>();
}
static <ENTITY> DbmsIdentifier<ENTITY> of(String dbmsName) {
final DbmsIdentifier<ENTITY> newId = new DbmsIdentifierImpl<>(dbmsName);
Hidden.INTERNED.putIfAbsent(newId, newId);
@SuppressWarnings("unchecked")
final DbmsIdentifier<ENTITY> result = (DbmsIdentifier<ENTITY>) Hidden.INTERNED.get(newId);
return result;
}
}