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https://issues.apache.org/jira/browse/FLINK-8630?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16365569#comment-16365569
]
ASF GitHub Bot commented on FLINK-8630:
---------------------------------------
Github user twalthr commented on a diff in the pull request:
https://github.com/apache/flink/pull/5491#discussion_r168485513
--- 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 --
The framework takes care of thread safety. Same as `MapFunction` etc.
> To support JSON schema to TypeInformation conversion
> -----------------------------------------------------
>
> Key: FLINK-8630
> URL: https://issues.apache.org/jira/browse/FLINK-8630
> Project: Flink
> Issue Type: Sub-task
> Components: Streaming Connectors
> Reporter: Xingcan Cui
> Assignee: Timo Walther
> Priority: Blocker
> Fix For: 1.5.0
>
>
> To support (FLINK-8558), we need to generate a \{{TypeInformation}} from a
> standard [JSON schema|http://json-schema.org/] (and maybe vice verse). There
> are some problems to be discussed, e.g., how to handle JSON {{Number}} type.
> One option would be we always return a specific type, which can be configured
> to be double or BigDecimal, for it.
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