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Cassandra support for Spring Data
/*
* Copyright 2013-2018 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
*
* 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.springframework.data.cassandra.core.mapping;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import org.springframework.data.annotation.Id;
/**
* Identifies the primary key field of the entity, which may be of a basic type or of a type that represents a composite
* primary key class. This field corresponds to the {@code PRIMARY KEY} of the corresponding Cassandra table. Only one
* field in a given type hierarchy may be annotated with this annotation.
*
* Remember, if the Cassandra table has multiple primary key columns, then you must define a class annotated with
* {@link PrimaryKeyClass} to represent the primary key!
*
* @author Alex Shvid
* @author Matthew T. Adams
*/
@Retention(value = RetentionPolicy.RUNTIME)
@Target(value = { ElementType.ANNOTATION_TYPE, ElementType.FIELD, ElementType.METHOD })
@Id
public @interface PrimaryKey {
/**
* The column name for the primary key if it is of a simple type, else ignored.
*/
String value() default "";
/**
* Whether to cause the column name to be force-quoted if the primary key is of a simple type, else ignored.
*/
boolean forceQuote() default false;
}