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.apache.avro.util.Utf8;
26 import org.onap.policy.apex.context.ContextRuntimeException;
27 import org.onap.policy.apex.model.basicmodel.concepts.AxKey;
28 import org.slf4j.ext.XLogger;
29 import org.slf4j.ext.XLoggerFactory;
32 * This class does string mapping from the Avro Utf8 class to the Java String class.
34 * @author Liam Fallon (liam.fallon@ericsson.com)
36 public class AvroStringObjectMapper implements AvroObjectMapper {
37 // Get a reference to the logger
38 private static final XLogger LOGGER = XLoggerFactory.getXLogger(AvroStringObjectMapper.class);
40 // The user keyAvro type for direct mapping
41 private AxKey userKey;
42 private Type avroType;
44 // The Apex compatible class
45 private static final Class<String> schemaClass = String.class;
51 public Class<?> getJavaClass() {
59 public void init(final AxKey initUserKey, final Type initAvroType) {
60 this.userKey = initUserKey;
61 this.avroType = initAvroType;
68 public Object createNewInstance(final Schema avroSchema) {
69 // By default, we do not create an instance, normal Java object creation for strings is
78 public Type getAvroType() {
86 public Object mapFromAvro(final Object avroObject) {
87 // The Avro object should be a Utf8 object
88 if (!(avroObject instanceof Utf8)) {
89 final String returnString =
90 userKey.getId() + ": object \"" + avroObject + "\" of class \"" + avroObject.getClass()
91 + "\" cannot be decoded to an object of class \"" + schemaClass.getCanonicalName() + "\"";
92 LOGGER.warn(returnString);
93 throw new ContextRuntimeException(returnString);
96 return avroObject.toString();
103 public Object mapToAvro(final Object object) {
104 if (object == null) {
105 final String returnString = userKey.getId() + ": cannot encode a null object of class \""
106 + schemaClass.getCanonicalName() + "\"";
107 LOGGER.warn(returnString);
108 throw new ContextRuntimeException(returnString);