build-support/checkstyle/coding_style.xml

<?xml version="1.0"?>

<!--
    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.
-->

<!DOCTYPE module PUBLIC
        "-//Puppy Crawl//DTD Check Configuration 1.3//EN"
        "http://www.puppycrawl.com/dtds/configuration_1_3.dtd">

<!-- Checkstyle rules required by HCatalog.

Rules defined here are required, and enforced during the build process.
Code consistency is important, but please show restraint with the rules
imposed on others.
-->

<module name="Checker">

    <!-- Checks whether files end with a new line.                        -->
    <!-- See http://checkstyle.sf.net/config_misc.html#NewlineAtEndOfFile -->
    <module name="NewlineAtEndOfFile"/>

    <!-- Checks for Size Violations.                    -->
    <!-- See http://checkstyle.sf.net/config_sizes.html -->
    <module name="FileLength"/>

    <!-- Ensure files contain the Apache source file headers -->
    <!-- http://www.apache.org/legal/src-headers.html -->
    <module name="RegexpHeader">
        <property name="headerFile" value="build-support/checkstyle/apache_header.txt"/>
        <property name="multiLines" value="1,2,3,4"/>
    </module>

    <module name="TreeWalker">

        <!-- Checks for imports                              -->
        <!-- See http://checkstyle.sf.net/config_import.html -->
        <module name="AvoidStarImport"/>
        <module name="IllegalImport"/> <!-- defaults to sun.* packages -->
        <module name="RedundantImport"/>
        <module name="UnusedImports"/>

        <module name="Indentation">
            <property name="caseIndent" value="0"/>
        </module>

    </module>

</module>