content: /*
   * 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
   *
   *     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.apache.avro.reflect;
  
  import java.lang.annotation.Documented;
  import java.lang.annotation.ElementType;
  import java.lang.annotation.Retention;
  import java.lang.annotation.RetentionPolicy;
  import java.lang.annotation.Target;
  
  /**
   * Declares that a Java type should have a specified Avro schema, overriding the
   * normally inferred schema. May be used for classes, parameters, fields and
   * method return types.
   * <p>
   * This is useful for slight alterations to the schema that would be
   * automatically inferred. For example, a <code>List&lt;Integer&gt;</code>whose
   * elements may be null might use the annotation
   * 
   * <pre>
   * &#64;AvroSchema("{\"type\":\"array\",\"items\":[\"null\",\"int\"]}")
   * </pre>
   * 
   * since the {@link Nullable} annotation could not be used here.
   */
  @Retention(RetentionPolicy.RUNTIME)
  @Target({ ElementType.TYPE, ElementType.PARAMETER, ElementType.METHOD, ElementType.FIELD })
  @Documented
  public @interface AvroSchema {
    /** The schema to use for this value. */
    String value();
  }
  