com.hazelcast.org.apache.calcite.adapter.java.Map Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to you 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 com.hazelcast.org.apache.calcite.adapter.java;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import static java.lang.annotation.ElementType.FIELD;
/**
* Annotation that indicates that a field is a map type.
*/
@Target({FIELD })
@Retention(RetentionPolicy.RUNTIME)
public @interface Map {
/** Key type. */
Class key();
/** Value type. */
Class value();
/** Whether keys may be null. */
boolean keyIsNullable() default true;
/** Whether values may be null. */
boolean valueIsNullable() default true;
}