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ASF GitHub Bot commented on HAWQ-178: ------------------------------------- Github user hornn commented on a diff in the pull request: https://github.com/apache/incubator-hawq/pull/302#discussion_r51818210 --- 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 -- just to be safe, I think the first group should be `.+` and not `.*`. > 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. -- This message was sent by Atlassian JIRA (v6.3.4#6332)