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Cassandra support for Spring Data
/*
* Copyright 2020-2022 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.mapping;
import org.springframework.data.util.ParsingUtils;
import org.springframework.util.Assert;
/**
* Naming strategy that renders {@literal CamelCase} name parts to {@literal snake_case}.
*
* @author Mark Paluch
* @since 3.0
*/
public class SnakeCaseNamingStrategy implements NamingStrategy {
public SnakeCaseNamingStrategy() {}
/**
* Uses {@link Class#getSimpleName()} and separates camel case parts with '_'.
*/
public String getTableName(CassandraPersistentEntity entity) {
Assert.notNull(entity, "CassandraPersistentEntity must not be null");
return ParsingUtils.reconcatenateCamelCase(entity.getType().getSimpleName(), "_");
}
/**
* Uses {@link Class#getSimpleName()} and separates camel case parts with '_'.
*/
public String getUserDefinedTypeName(CassandraPersistentEntity entity) {
Assert.notNull(entity, "CassandraPersistentEntity must not be null");
return ParsingUtils.reconcatenateCamelCase(entity.getType().getSimpleName(), "_");
}
/**
* Uses {@link CassandraPersistentProperty#getName()} and separates camel case parts with '_'.
*/
public String getColumnName(CassandraPersistentProperty property) {
Assert.notNull(property, "CassandraPersistentProperty must not be null");
return ParsingUtils.reconcatenateCamelCase(property.getName(), "_");
}
}