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https://issues.apache.org/jira/browse/HAWQ-178?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15132100#comment-15132100
]
ASF GitHub Bot commented on HAWQ-178:
-------------------------------------
Github user tzolov commented on a diff in the pull request:
https://github.com/apache/incubator-hawq/pull/302#discussion_r51853867
--- Diff:
pxf/pxf-json/src/main/java/org/apache/hawq/pxf/plugins/json/ColumnDescriptorCache.java
---
@@ -0,0 +1,165 @@
+package org.apache.hawq.pxf.plugins.json;
+
+/*
+ * 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.
+ */
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.apache.hawq.pxf.api.io.DataType;
+import org.apache.hawq.pxf.api.utilities.ColumnDescriptor;
+
+/**
+ * Helper class used to retrieve all column details relevant for the json
processing.
+ */
+public class ColumnDescriptorCache {
+
+ private static Pattern ARRAY_PROJECTION_PATTERN =
Pattern.compile("(.*)\\[([0-9]+)\\]");
--- End diff --
+1
> Add JSON plugin support in code base
> ------------------------------------
>
> Key: HAWQ-178
> URL: https://issues.apache.org/jira/browse/HAWQ-178
> Project: Apache HAWQ
> Issue Type: New Feature
> Components: PXF
> Reporter: Goden Yao
> Assignee: Christian Tzolov
> Fix For: backlog
>
> Attachments: PXFJSONPluginforHAWQ2.0andPXF3.0.0.pdf,
> PXFJSONPluginforHAWQ2.0andPXF3.0.0v.2.pdf,
> PXFJSONPluginforHAWQ2.0andPXF3.0.0v.3.pdf
>
>
> JSON has been a popular format used in HDFS as well as in the community,
> there has been a few JSON PXF plugins developed by the community and we'd
> like to see it being incorporated into the code base as an optional package.
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