org.springframework.data.relational.core.mapping.CachingNamingStrategy Maven / Gradle / Ivy
/*
* Copyright 2019-2023 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.relational.core.mapping;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.springframework.data.util.Lazy;
import org.springframework.util.Assert;
import org.springframework.util.ConcurrentReferenceHashMap;
/**
* A {@link NamingStrategy} to cache the results of the target one.
*
* @author Oliver Drotbohm
* @since 1.1
*/
class CachingNamingStrategy implements NamingStrategy {
private final NamingStrategy delegate;
private final Map columnNames = new ConcurrentHashMap<>();
private final Map keyColumns = new ConcurrentHashMap<>();
private final Map, String> qualifiedTableNames = new ConcurrentReferenceHashMap<>();
private final Map, String> tableNames = new ConcurrentReferenceHashMap<>();
private final Lazy schema;
/**
* Creates a new {@link CachingNamingStrategy} with the given delegate {@link NamingStrategy}.
*
* @param delegate must not be {@literal null}.
*/
CachingNamingStrategy(NamingStrategy delegate) {
Assert.notNull(delegate, "Delegate must not be null!");
this.delegate = delegate;
this.schema = Lazy.of(delegate::getSchema);
}
/*
* (non-Javadoc)
* @see org.springframework.data.relational.core.mapping.NamingStrategy#getKeyColumn(org.springframework.data.relational.core.mapping.RelationalPersistentProperty)
*/
@Override
public String getKeyColumn(RelationalPersistentProperty property) {
return keyColumns.computeIfAbsent(property, delegate::getKeyColumn);
}
/*
* (non-Javadoc)
* @see org.springframework.data.relational.core.mapping.NamingStrategy#getQualifiedTableName(java.lang.Class)
*/
@Override
@Deprecated
public String getQualifiedTableName(Class type) {
return qualifiedTableNames.computeIfAbsent(type, delegate::getQualifiedTableName);
}
/*
* (non-Javadoc)
* @see org.springframework.data.relational.core.mapping.NamingStrategy#getTableName(java.lang.Class)
*/
@Override
public String getTableName(Class type) {
return tableNames.computeIfAbsent(type, delegate::getTableName);
}
/*
* (non-Javadoc)
* @see org.springframework.data.relational.core.mapping.NamingStrategy#getReverseColumnName(org.springframework.data.relational.core.mapping.PersistentPropertyPathExtension)
*/
@Override
public String getReverseColumnName(PersistentPropertyPathExtension path) {
return delegate.getReverseColumnName(path);
}
/*
* (non-Javadoc)
* @see org.springframework.data.relational.core.mapping.NamingStrategy#getReverseColumnName(org.springframework.data.relational.core.mapping.RelationalPersistentProperty)
*/
@Override
public String getReverseColumnName(RelationalPersistentProperty property) {
return delegate.getReverseColumnName(property);
}
/*
* (non-Javadoc)
* @see org.springframework.data.relational.core.mapping.NamingStrategy#getSchema()
*/
@Override
public String getSchema() {
return schema.get();
}
/*
* (non-Javadoc)
* @see org.springframework.data.relational.core.mapping.NamingStrategy#getColumnName(org.springframework.data.relational.core.mapping.RelationalPersistentProperty)
*/
@Override
public String getColumnName(RelationalPersistentProperty property) {
return columnNames.computeIfAbsent(property, delegate::getColumnName);
}
}