com.jn.sqlhelper.common.er.EntityTableRegistry Maven / Gradle / Ivy
/*
* Copyright 2020 the original author or authors.
*
* Licensed under the LGPL, Version 3.0 (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.gnu.org/licenses/lgpl-3.0.html
*
* 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.jn.sqlhelper.common.er;
import com.jn.langx.annotation.Singleton;
import com.jn.langx.util.Preconditions;
import com.jn.langx.util.collection.ConcurrentReferenceHashMap;
import com.jn.langx.util.reflect.reference.ReferenceType;
@Singleton
public class EntityTableRegistry {
private EntityTableParser entityTableParser = new DefaultEntityTableMappingParser();
/**
* Key: entity class
* Value：Entity Table Mapping
*/
private ConcurrentReferenceHashMap, EntityTableMapping> map = new ConcurrentReferenceHashMap, EntityTableMapping>(1000, 0.95f, Runtime.getRuntime().availableProcessors(), ReferenceType.SOFT, ReferenceType.STRONG);
public EntityTableMapping getEntityTableMapping(Class entityClass) {
Preconditions.checkNotNull(entityClass);
EntityTableMapping mapping = map.get(entityClass);
if (mapping == null) {
mapping = entityTableParser.parse(entityClass);
map.putIfAbsent(entityClass, mapping);
}
EntityTableMapping mapping0 = map.get(entityClass);
if (mapping0 != null) {
mapping = mapping0;
}
return mapping;
}
}