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Add JsonRecordBuilder implementation (apache#10052)
Provide a JSON GenericRecord builder allowing to produce JsonGenericRecord from the GenericJsonSchema. Add a new class org.apache.pulsar.client.impl.schema.generic.JsonRecordBuilderImpl Modify the org.apache.pulsar.client.impl.schema.generic.GenericJsonSchema.newRecordBuilder() Add a unit test in org.apache.pulsar.client.impl.schema.JSONSchemaTest (cherry picked from commit 08cbdc7)
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108 changes: 108 additions & 0 deletions
108
...ent/src/main/java/org/apache/pulsar/client/impl/schema/generic/JsonRecordBuilderImpl.java
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| /** | ||
| * 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 org.apache.pulsar.client.impl.schema.generic; | ||
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| import com.fasterxml.jackson.databind.JsonNode; | ||
| import com.fasterxml.jackson.databind.ObjectMapper; | ||
| import org.apache.pulsar.client.api.schema.Field; | ||
| import org.apache.pulsar.client.api.schema.GenericRecord; | ||
| import org.apache.pulsar.client.api.schema.GenericRecordBuilder; | ||
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| import java.util.HashMap; | ||
| import java.util.Map; | ||
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| public class JsonRecordBuilderImpl implements GenericRecordBuilder { | ||
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| private static ObjectMapper objectMapper = new ObjectMapper(); | ||
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| private final GenericSchemaImpl genericSchema; | ||
| private Map<String, Object> map = new HashMap<>(); | ||
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| public JsonRecordBuilderImpl(GenericSchemaImpl genericSchema) { | ||
| this.genericSchema = genericSchema; | ||
| } | ||
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| /** | ||
| * Sets the value of a field. | ||
| * | ||
| * @param fieldName the name of the field to set. | ||
| * @param value the value to set. | ||
| * @return a reference to the RecordBuilder. | ||
| */ | ||
| @Override | ||
| public GenericRecordBuilder set(String fieldName, Object value) { | ||
| if (value instanceof GenericRecord) { | ||
| if (!(value instanceof GenericJsonRecord)) | ||
| throw new IllegalArgumentException("JSON Record Builder doesn't support non-JSON record as a field"); | ||
| GenericJsonRecord genericJsonRecord = (GenericJsonRecord) value; | ||
| value = genericJsonRecord.getJsonNode(); | ||
| } | ||
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| map.put(fieldName, value); | ||
| return this; | ||
| } | ||
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| /** | ||
| * Sets the value of a field. | ||
| * | ||
| * @param field the field to set. | ||
| * @param value the value to set. | ||
| * @return a reference to the RecordBuilder. | ||
| */ | ||
| @Override | ||
| public GenericRecordBuilder set(Field field, Object value) { | ||
| set(field.getName(), value); | ||
| return this; | ||
| } | ||
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| /** | ||
| * Clears the value of the given field. | ||
| * | ||
| * @param fieldName the name of the field to clear. | ||
| * @return a reference to the RecordBuilder. | ||
| */ | ||
| @Override | ||
| public GenericRecordBuilder clear(String fieldName) { | ||
| map.remove(fieldName); | ||
| return this; | ||
| } | ||
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| /** | ||
| * Clears the value of the given field. | ||
| * | ||
| * @param field the field to clear. | ||
| * @return a reference to the RecordBuilder. | ||
| */ | ||
| @Override | ||
| public GenericRecordBuilder clear(Field field) { | ||
| clear(field.getName()); | ||
| return this; | ||
| } | ||
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| @Override | ||
| public GenericRecord build() { | ||
| JsonNode jn = objectMapper.valueToTree(map); | ||
| return new GenericJsonRecord( | ||
| null, | ||
| genericSchema.getFields(), | ||
| jn, | ||
| null | ||
| ); | ||
| } | ||
| } |
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