2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2016-2018 Ericsson. All rights reserved.
4 * ================================================================================
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
17 * SPDX-License-Identifier: Apache-2.0
18 * ============LICENSE_END=========================================================
21 package org.onap.policy.apex.plugins.context.schema.avro;
23 import org.apache.avro.Schema;
24 import org.apache.avro.Schema.Type;
25 import org.onap.policy.apex.model.basicmodel.concepts.AxKey;
28 * This interface is used to allow mapping of Avro object to and from Java objects.
30 * @author Liam Fallon (liam.fallon@ericsson.com)
32 public interface AvroObjectMapper {
34 * Get the Java class produced and consumed by this mapper.
36 * @return the Java class
38 Class<?> getJavaClass();
41 * Initialize the mapper is working with.
43 * @param userKey the user key
44 * @param avroType the avro type
46 void init(AxKey userKey, Type avroType);
49 * Create a new instance of the java object the Avro schema maps to.
51 * @param avroSchema the Avro schema to use to create the new instance
52 * @return a new instance of the object
54 Object createNewInstance(Schema avroSchema);
57 * Set the Avro type the mapper is working with.
59 * @return the avro type
64 * Map the Avro object to an object Apex can handler.
66 * @param avroObject the Avro object to map
67 * @return the Apex-compatible object
69 Object mapFromAvro(Object avroObject);
72 * Map the Apex object to an Avro object.
74 * @param object the Apex-compatible object
75 * @return the Avro object
77 Object mapToAvro(Object object);