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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.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import com.datastax.driver.core.DataType;
/**
* Specifies the Cassandra type of the annotated property or parameter when used in query methods.
*
* @author Alex Shvid
* @author Matthew T. Adams
* @author Mark Paluch
* @see com.datastax.driver.core.DataType
*/
@Documented
@Retention(RetentionPolicy.RUNTIME)
public @interface CassandraType {
/**
* The {@link DataType.Name} of the property.
*/
DataType.Name type();
/**
* If the property is {@link java.util.Collection Collection-like}, then this attribute holds
* a single {@link DataType.Name DataType Name} representing the element type of the {@link java.util.Collection}.
*
* If the property is a {@link java.util.Map}, then this attribute holds exactly
* two {@link DataType.Name DataType Names}; the first is the key type and the second is the value type.
*
* If the property is neither {@link java.util.Collection Collection-like} nor a {@link java.util.Map},
* then this attribute is ignored.
*
* @return an array of {@link DataType.Name} objects.
* @see com.datastax.driver.core.DataType.Name
*/
DataType.Name[] typeArguments() default {};
/**
* If the property maps to a User-Defined Type (UDT) then this attribute holds the user type name.
*
* For {@link java.util.Collection Collection-like} properties the user type name applies to the component type.
* The user type name is only required if the UDT does not map to a class annotated with {@link UserDefinedType}.
*
* @return {@link String name} of the user type
* @since 1.5
*/
String userTypeName() default "";
}