checkstyle-rules.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE module PUBLIC "-//Puppy Crawl//DTD Check Configuration 1.3//EN"
        "http://www.puppycrawl.com/dtds/configuration_1_3.dtd">
<module name="Checker">
    <property name="severity" value="warning"/>
    <property name="charset" value="UTF-8"/>

    <!-- TreeWalker module checks -->
    <module name="TreeWalker">
        <property name="tabWidth" value="4"/>
        <module name="NonEmptyAtclauseDescription">
            <property name="severity" value="error"/>
        </module>
        <module name="JavadocMethod">
            <property name="scope" value="protected"/>
            <property name="severity" value="error"/>
            <property name="tokens" value="METHOD_DEF, ANNOTATION_FIELD_DEF"/>
            <property name="allowUndeclaredRTE" value="true"/>
            <property name="allowMissingPropertyJavadoc" value="true"/>
            <property name="allowThrowsTagsForSubclasses" value="true"/>
        </module>
        <module name="JavadocType">
            <property name="severity" value="error"/>
            <property name="scope" value="public"/>
            <property name="authorFormat" value="\w+"/>
            <property name="allowMissingParamTags" value="true"/>
        </module>
        <module name="JavadocVariable">
            <property name="severity" value="error"/>
            <property name="scope" value="protected"/>
            <property name="ignoreNamePattern" value="log|logger|LOG|LOGGER"/>
        </module>
        <module name="JavadocStyle">
            <property name="severity" value="error"/>
        </module>
        <module name="ClassFanOutComplexity">
            <property name="max" value="120"/>
            <property name="severity" value="error"/>
        </module>
        <module name="CommentsIndentation">
            <property name="severity" value="error"/>
        </module>
        <module name="CyclomaticComplexity">
            <property name="max" value="20"/>
            <property name="severity" value="error"/>
        </module>
        <module name="DefaultComesLast">
            <property name="severity" value="error"/>
        </module>
        <!--
        <module name="MissingCtorCheck">
            <property name="severity" value="error"/>
        </module>
        -->
        <module name="AnnotationLocation">
            <property name="severity" value="error"/>
            <property name="allowSamelineSingleParameterlessAnnotation" value="false"/>
        </module>
        <module name="ConstantName">
            <property name="severity" value="error"/>
        </module>
        <module name="GenericWhitespaceCheck">
            <property name="severity" value="error"/>
        </module>
        <module name="ModifiedControlVariable">
            <property name="severity" value="error"/>
        </module>
        <module name="MagicNumber">
            <property name="ignoreAnnotation" value="true"/>
            <property name="ignoreHashCodeMethod" value="true"/>
            <property name="ignoreFieldDeclaration" value="true"/>
            <property name="severity" value="error"/>
            <property name="ignoreNumbers" value="-1, 0, 1, 2, 1000"/>
        </module>
        <module name="LocalFinalVariableName">
            <property name="severity" value="error"/>
        </module>
        <module name="LocalVariableName">
            <property name="severity" value="error"/>
        </module>
        <module name="AbstractClassName">
            <property name="ignoreModifier" value="true"/>
            <property name="severity" value="error"/>
            <property name="format" value="^Abstract.*$|^.*Factory$|^Base.*$|^Root.*$"/>
        </module>
        <module name="MemberName">
            <property name="severity" value="error"/>
        </module>
        <module name="MethodName">
            <property name="severity" value="error"/>
        </module>
        <module name="GenericWhitespace">
            <property name="severity" value="error"/>
        </module>
        <module name="PackageName">
            <property name="severity" value="error"/>
        </module>
        <module name="UnnecessaryParentheses">
            <property name="severity" value="error"/>
        </module>
        <module name="ParameterName">
            <property name="severity" value="error"/>
            <property name="ignoreOverridden" value="true"/>
        </module>
        <module name="StaticVariableName">
            <property name="severity" value="error"/>
            <property name="format" value="(^[A-Z][A-Z0-9]*(_[A-Z0-9]+)*$)"/>
        </module>
        <module name="SingleSpaceSeparator">
            <property name="validateComments" value="true"/>
            <property name="severity" value="error"/>
        </module>
        <module name="AbbreviationAsWordInName"/>
        <module name="TypeName">
            <property name="severity" value="error"/>
        </module>
        <module name="AvoidStarImport">
            <property name="severity" value="error"/>
            <property name="excludes"
                      value="java.io,
                      java.net,
                      java.lang.Math,
                      org.junit.Assert,
                      org.mockito.Mockito,
                      org.mockito.Matchers,
                      org.springframework.test.web.servlet.request.MockMvcRequestBuilders,
                      org.springframework.test.web.servlet.result.MockMvcResultMatchers,
                      org.springframework.test.web.client.ExpectedCount,
                      org.springframework.test.web.client.match.MockRestRequestMatchers,
                      org.springframework.test.web.client.response.MockRestResponseCreators,
                      java.nio.file.StandardWatchEventKinds"/>
            <property name="allowStaticMemberImports" value="true"/>
        </module>
        <module name="SingleLineJavadoc">
            <property name="severity" value="warning"/>
        </module>
        <module name="IllegalImport">
            <property name="severity" value="error"/>
        </module>
        <module name="RedundantImport">
            <property name="severity" value="error"/>
        </module>

        <!--
        This check insofar is unable to ignore constants and logger fields.
        <module name="RequireThis">
            <property name="severity" value="error"/>
            <property name="checkMethods" value="false" />
            <property name="validateOnlyOverlapping" value="false" />
        </module>
        -->

        <module name="UnusedImports">
            <property name="severity" value="error"/>
        </module>
        <module name="UnnecessaryParentheses">
            <property name="severity" value="error"/>
        </module>
        <module name="SuperClone">
            <property name="severity" value="info"/>
        </module>
        <module name="SuperFinalize">
            <property name="severity" value="error"/>
        </module>
        <module name="MethodLength"/>
        <module name="ParameterNumber">
            <property name="max" value="10"/>
            <property name="severity" value="error"/>
            <property name="tokens" value="METHOD_DEF"/>
        </module>
        <module name="LineLength">
            <property name="max" value="160"/>
            <property name="tabWidth" value="4"/>
            <property name="severity" value="error"/>
        </module>
        <module name="EmptyForIteratorPad"/>
        <module name="MethodParamPad">
            <property name="severity" value="error"/>
        </module>
        <module name="NoWhitespaceAfter">
            <property name="severity" value="error"/>
        </module>
        <module name="NoWhitespaceBefore">
            <property name="severity" value="error"/>
        </module>
        <module name="OperatorWrap">
            <property name="severity" value="error"/>
        </module>
        <module name="ParenPad">
            <property name="severity" value="error"/>
        </module>
        <module name="TypecastParenPad"/>
        <module name="WhitespaceAfter">
            <property name="severity" value="error"/>
        </module>
        <module name="ModifierOrder">
            <property name="severity" value="error"/>
        </module>
        <module name="RedundantModifier">
            <property name="severity" value="error"/>
        </module>
        <module name="AvoidNestedBlocks"/>
        <module name="EmptyBlock">
            <property name="severity" value="error"/>
        </module>
        <module name="FallThrough">
            <property name="severity" value="error"/>
        </module>
        <module name="DeclarationOrder">
            <property name="severity" value="error"/>
        </module>
        <module name="CovariantEquals">
            <property name="severity" value="error"/>
        </module>
        <module name="ExplicitInitialization">
            <property name="severity" value="error"/>
        </module>
        <module name="LeftCurly">
            <property name="severity" value="error"/>
        </module>
        <module name="NeedBraces">
            <property name="severity" value="error"/>
        </module>
        <module name="EqualsAvoidNull">
            <property name="severity" value="error"/>
        </module>
        <module name="MultipleVariableDeclarations">
            <property name="severity" value="error"/>
        </module>
        <module name="OneTopLevelClass">
            <property name="severity" value="error"/>
        </module>
        <module name="StringLiteralEquality">
            <property name="severity" value="error"/>
        </module>

        <!--
        <module name="MissingCtor">
            <property name="severity" value="error" />
        </module>
        -->

        <module name="OuterTypeFilename">
            <property name="severity" value="error"/>
        </module>
        <module name="OuterTypeNumber">
            <property name="severity" value="error"/>
        </module>
        <module name="AnnotationUseStyle">
            <property name="severity" value="error"/>
        </module>
        <module name="CatchParameterName">
            <property name="severity" value="error"/>
        </module>
        <module name="AnonInnerLength">
            <property name="max" value="40"/>
            <property name="severity" value="error"/>
        </module>
        <module name="RightCurly">
            <property name="severity" value="error"/>
        </module>
        <module name="NoFinalizer">
            <property name="severity" value="error"/>
        </module>
        <module name="EmptyStatement"/>
        <module name="EqualsHashCode">
            <property name="severity" value="info"/>
        </module>
        <module name="IllegalInstantiation"/>
        <module name="InnerAssignment"/>
        <module name="MissingSwitchDefault">
            <property name="severity" value="info"/>
        </module>
        <module name="SimplifyBooleanExpression">
            <property name="severity" value="error"/>
        </module>
        <module name="SimplifyBooleanReturn">
            <property name="severity" value="error"/>
        </module>
        <module name="FinalClass">
            <property name="severity" value="error"/>
        </module>
        <module name="HideUtilityClassConstructor">
            <property name="severity" value="error"/>
        </module>
        <!--
        <module name="InterfaceIsType">
            <property name="severity" value="info"/>
        </module>
        <module name="MultipleStringLiterals">
            <property name="severity" value="info"/>
            <property name="ignoreStringsRegexp" 
                      value="(^&quot;&quot;$)|(^&quot;(no|false|\/|true|//|yes|default|\.|,|=|&amp;|\?|UTF-8|\*|\\|//)&quot;$)" />
        </module>
         -->

        <module name="VisibilityModifier">
            <property name="severity" value="error"/>
            <property name="protectedAllowed" value="true"/>
        </module>
        <module name="AtclauseOrder">
            <property name="severity" value="error"/>
        </module>
        <module name="BooleanExpressionComplexity">
            <property name="severity" value="error"/>
            <property name="max" value="4"/>
        </module>
        <module name="ArrayTypeStyle">
            <property name="severity" value="error"/>
        </module>
        <module name="FinalParameters">
            <property name="severity" value="error"/>
            <property name="tokens" value="METHOD_DEF, CTOR_DEF, LITERAL_CATCH"/>
        </module>
        <module name="FinalLocalVariable">
            <property name="severity" value="error"/>
            <property name="tokens" value="PARAMETER_DEF, VARIABLE_DEF"/>
            <property name="validateEnhancedForLoopVariable" value="true"/>
        </module>
        <module name="TodoComment">
            <property name="severity" value="error"/>
        </module>
        <module name="MutableException">
            <property name="severity" value="error"/>
        </module>
        <module name="UpperEll"/>
        <module name="MissingOverride">
            <property name="severity" value="error"/>
        </module>
        <module name="MissingDeprecated">
            <property name="severity" value="error"/>
        </module>

        <!-- Custom checks based on regular expressions -->
        <module name="RegexpSinglelineJava">
            <property name="id" value="namedAnnotations"/>
            <metadata name="net.sf.eclipsecs.core.comment" value="Component/Controller/Configuration annotations must be named"/>
            <property name="severity" value="error"/>
            <property name="format" value="@(Configuration|Component|Controller)(\(\))*$"/>
            <property name="message"
                      value="It's better to name controller/component/configuration annotations to avoid implicit configuration"/>
        </module>

        <module name="RegexpSinglelineJava">
            <metadata name="net.sf.eclipsecs.core.comment" value="Parameteric log messages"/>
            <property name="severity" value="error"/>
            <property name="format" value="log\.\w+\(((\&quot;.+\&quot;\s*\+)|(.*\s*\+\s*\&quot;))"/>
            <property name="message"
                      value="Avoid string concatenation for constructing log messages. Use parametric messages instead"/>
        </module>
        <module name="RegexpSinglelineJava">
            <metadata name="net.sf.eclipsecs.core.comment" value="JavaDoc @version tag"/>
            <property name="severity" value="error"/>
            <property name="format" value="@version\s+(.+)*(\$Revision|\$Date)"/>
            <property name="message" value="Invalid JavaDoc @version tag."/>
        </module>
        <module name="RegexpSinglelineJava">
            <metadata name="net.sf.eclipsecs.core.comment" value="Logging framework selection"/>
            <property name="severity" value="error"/>
            <property name="format" value="LogFactory\.getLog"/>
            <property name="message" value="CAS uses the slf4j logging framework."/>
        </module>
        <module name="RegexpSinglelineJava">
            <metadata name="net.sf.eclipsecs.core.comment" value="Logger as non-transient"/>
            <property name="severity" value="error"/>
            <property name="format" value="(protected|public)\s+(final\s)*Logger"/>
            <property name="message" value="Non-static logger must be declared as transient to avoid serialization issues."/>
        </module>
        <module name="RegexpSinglelineJava">
            <property name="id" value="sysOutConsoleLogs"/>
            <metadata name="net.sf.eclipsecs.core.comment" value="Console output messages"/>
            <property name="severity" value="error"/>
            <property name="format" value="System\.(out|err)"/>
            <property name="message"
                      value="Avoid sending messages to the console directly. Use a logger object instead"/>
        </module>
        <module name="RegexpSinglelineJava">
            <property name="id" value="stackTraceConsoleLogs"/>
            <metadata name="net.sf.eclipsecs.core.comment" value="Printing stack traces to the console"/>
            <property name="severity" value="error"/>
            <property name="format" value="\.printStackTrace\(\)"/>
            <property name="message"
                      value="Avoid sending stack traces to the console directly. Use a logger object instead"/>
        </module>
        <module name="RegexpSinglelineJava">
            <property name="id" value="junitTestMethodName"/>
            <metadata name="net.sf.eclipsecs.core.comment" value="Using 'test' prefix for JUnit Tests"/>
            <property name="severity" value="error"/>
            <property name="format" value="(public|protected)\s+void\s+test\w+\(.+\{$"/>
            <property name="message"
                      value="JUnit test methods should not begin with the 'test' prefix. Use annotations instead and/or rename the method"/>
        </module>
        <module name="RegexpSinglelineJava">
            <property name="id" value="commonslang3"/>
            <metadata name="net.sf.eclipsecs.core.comment" value="Force using commons-lang v3"/>
            <property name="severity" value="error"/>
            <property name="format" value="org\.apache\.commons\.lang\."/>
            <property name="message" value="Use 'org.apache.commons.lang3' instead."/>
        </module>
        <module name="RegexpSinglelineJava">
            <metadata name="net.sf.eclipsecs.core.comment" value="The logger object must be named &quot;logger&quot;"/>
            <property name="severity" value="error"/>
            <property name="format" value="\s+(static\s)*(final\s)*(static\s)*Logger\s+(log|LOG)\b"/>
            <property name="message"
                      value="The Logger object must only be called &quot;logger&quot; or &quot;LOGGER&quot;"/>
        </module>
        <module name="RegexpSinglelineJava">
            <property name="id" value="finalNonUtilClass"/>
            <metadata name="net.sf.eclipsecs.core.comment" value="final non-utility classes"/>
            <property name="severity" value="error"/>
            <property name="format" value="(public\s)*(static\s)*final\s+class\s+\w+"/>
            <property name="message" value="Non-utility class should not be marked as final"/>
        </module>
        <module name="RegexpSinglelineJava">
            <metadata name="net.sf.eclipsecs.core.comment" value="Qualifying logger with the &quot;this&quot; keyword"/>
            <property name="severity" value="error"/>
            <property name="format" value="((this\.logger)|(super\.logger))\.\w+\("/>
            <property name="message" value="The Logger object need not be qualified with the &quot;this&quot; keyword"/>
        </module>
        <module name="RegexpSinglelineJava">
            <metadata name="net.sf.eclipsecs.core.comment" value="Using @Test instead of extending TestCase"/>
            <property name="severity" value="error"/>
            <property name="format" value="class\s+\w+\s+extends\s+(junit\.framework\.)*TestCase"/>
            <property name="message"
                      value="All testcase must use annotations (@Test) instead of extending junit.framework.TestCase"/>
        </module>
        <module name="RegexpSinglelineJava">
            <metadata name="net.sf.eclipsecs.core.comment" value="Using the junit.framework package"/>
            <property name="severity" value="error"/>
            <property name="format" value="junit.framework"/>
            <property name="message" value="The package junit.framework belongs to JUnit v3. Use org.junit instead."/>
        </module>
        <module name="RegexpSinglelineJava">
            <metadata name="net.sf.eclipsecs.core.comment" value="Checking for logging level"/>
            <property name="severity" value="error"/>
            <property name="format" value="log\.is\w+Enabled\("/>
            <property name="message"
                      value="Consider not checking for logging levels. Let the logging framework handle that."/>
        </module>
        <module name="RegexpSinglelineJava">
            <metadata name="net.sf.eclipsecs.core.comment" value="Using PostConstruct annotation"/>
            <property name="severity" value="error"/>
            <property name="format" value=".+InitializingBean.+"/>
            <property name="message"
                      value="Use the @PostConstruct annotation instead of implementing InitializingBean"/>
        </module>
    </module>

    <!-- Checker module checks -->
    <module name="UniqueProperties">
        <property name="severity" value="error"/>
    </module>
    <module name="NewlineAtEndOfFile">
        <property name="fileExtensions" value="java, xml, properties, txt"/>
        <property name="lineSeparator" value="lf"/>
        <property name="severity" value="error"/>
    </module>
    <module name="Translation">
        <property name="severity" value="ignore"/>
    </module>
    <module name="FileLength"/>
    <module name="FileTabCharacter">
        <property name="severity" value="error"/>
    </module>


    <!-- Custom checks based on regular expressions -->
    <module name="RegexpSingleline">
        <metadata name="net.sf.eclipsecs.core.comment" value="Trailing spaces"/>
        <property name="severity" value="error"/>
        <property name="format" value="\w+\s+$"/>
        <property name="message" value="Line has trailing spaces."/>
    </module>
    <module name="RegexpSingleline">
        <metadata name="net.sf.eclipsecs.core.comment" value="Forbidden annotations"/>
        <property name="severity" value="error"/>
        <property name="format" value="@Component|@Value"/>
        <property name="message" value="Avoid using the indicated annotations."/>
    </module>
    <module name="RegexpSingleline">
        <metadata name="net.sf.eclipsecs.core.comment" value="Use Java streams"/>
        <property name="severity" value="error"/>
        <property name="format" value="new .+(Set|List).+\(Arrays\.asList"/>
        <property name="message" value="Avoid chaining collections. Shoot for immutability. Try Stream.of() and collect."/>
    </module>
    <module name="RegexpSingleline">
        <metadata name="net.sf.eclipsecs.core.comment" value="Space instead of tabs"/>
        <property name="severity" value="error"/>
        <property name="format" value="^\t+"/>
        <property name="message" value="Tabs should never be used for indentation. Use spaces instead"/>
    </module>
    <module name="RegexpSingleline">
        <metadata name="net.sf.eclipsecs.core.comment" value="Space after cast"/>
        <property name="severity" value="error"/>
        <property name="format" value="\(\w+\)\w+"/>
        <property name="message" value="There are no spaces after cast."/>
    </module>
    <module name="RegexpSingleline">
        <metadata name="net.sf.eclipsecs.core.comment" value="Usage of java.util.Random"/>
        <property name="severity" value="error"/>
        <property name="format" value="(java.util.Random)|(new Random\()"/>
        <property name="message" value="For security purposes, use 'java.security.SecureRandom' instead"/>
    </module>
    <module name="RegexpSingleline">
        <metadata name="net.sf.eclipsecs.core.comment" value="JUnit Assert static import"/>
        <property name="severity" value="error"/>
        <property name="format" value="import\s+static\s+org\.junit\.Assert\.\w+"/>
        <property name="message" value="JUnit Assert methods MUST be imported statically with a *"/>
    </module>

    <module name="RegexpSingleline">
        <metadata name="net.sf.eclipsecs.core.comment" value="Arrays.asList() method call"/>
        <property name="severity" value="error"/>
        <property name="format" value="Lists\.newArrayList\(.+"/>
        <property name="message" value="Use Arrays.asList() or Collections.singletonList() instead."/>
    </module>

    <module name="RegexpSingleline">
        <metadata name="net.sf.eclipsecs.core.comment" value="Mockito static import"/>
        <property name="severity" value="error"/>
        <property name="format" value="import\s+static\s+org\.mockito\.Mockito\.\w+"/>
        <property name="message" value="Mockito methods MUST be imported statically with a *"/>
    </module>
    <module name="RegexpSingleline">
        <metadata name="net.sf.eclipsecs.core.comment" value="Test class is named incorrectly"/>
        <property name="severity" value="error"/>
        <property name="format" value="public\s+(abstract\s+)*class\s+.+Test\s*\{"/>
        <property name="message" value="Name of the test class MUST end in 'Tests'"/>
    </module>
    <module name="RegexpSingleline">
        <metadata name="net.sf.eclipsecs.core.comment" value="Use @Rule instead of expect an exception"/>
        <property name="severity" value="error"/>
        <property name="format" value="@Test\(expect"/>
        <property name="message" value="Use @Rule ExpectedException instead of expecting an exception"/>
    </module>
    <module name="RegexpSingleline">
        <metadata name="net.sf.eclipsecs.core.comment" value="Use Collections.singleton instead"/>
        <property name="severity" value="info"/>
        <property name="format" value="new.*Set&lt;&gt;\((Arrays\.asList\([^,]+\)|Collections\.singletonList\(.*\))\)"/>
        <property name="message" value="Consider using Collections.singleton instead"/>
    </module>

    <module name="RegexpSingleline">
        <metadata name="net.sf.eclipsecs.core.comment" value="Use specific request annotation"/>
        <property name="severity" value="error"/>
        <property name="format" value="method = RequestMethod\."/>
        <property name="fileExtensions" value="java"/>
        <property name="message" value="Use specific request annotation from org.springframework.web.bind.annotation package"/>
    </module>
    <module name="RegexpSingleline">
        <metadata name="net.sf.eclipsecs.core.comment" value="Missing @since tag"/>
        <property name="severity" value="error"/>
        <property name="format" value="\s+\*+\s+@since\s+\d+\.\d+.*"/>
        <property name="maximum" value="200"/>
        <property name="minimum" value="1"/>
        <property name="fileExtensions" value="java,groovy"/>
        <property name="message" value="There are no @since tags defined for this component's Javadocs."/>
    </module>
    <module name="SuppressionFilter">
        <property name="file" value="${checkstyle.suppressions.file}"/>
    </module>
</module>