Github user xccui commented on a diff in the pull request: https://github.com/apache/flink/pull/5491#discussion_r168438157 --- Diff: flink-formats/flink-json/src/main/java/org/apache/flink/formats/json/JsonNodeDeserializationSchema.java --- @@ -0,0 +1,53 @@ +/* + * 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.flink.formats.json; + +import org.apache.flink.annotation.PublicEvolving; +import org.apache.flink.api.common.serialization.AbstractDeserializationSchema; + +import org.apache.flink.shaded.jackson2.com.fasterxml.jackson.databind.ObjectMapper; +import org.apache.flink.shaded.jackson2.com.fasterxml.jackson.databind.node.ObjectNode; + +import java.io.IOException; + +/** + * DeserializationSchema that deserializes a JSON String into an ObjectNode. + * + * <p>Fields can be accessed by calling objectNode.get(<name>).as(<type>) + */ +@PublicEvolving +public class JsonNodeDeserializationSchema extends AbstractDeserializationSchema<ObjectNode> { + + private static final long serialVersionUID = -1699854177598621044L; + + private ObjectMapper mapper; + + @Override + public ObjectNode deserialize(byte[] message) throws IOException { --- End diff -- IMO, this method should be thread-safe.
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