Class SuppressionSingleFilter

  • All Implemented Interfaces:
    Configurable, Contextualizable, Filter

    public class SuppressionSingleFilter
    extends AutomaticBean
    implements Filter

    Filter SuppressionSingleFilter suppresses audit events for Checks violations in the specified file, class, checks, message, module id, lines, and columns.

    Rationale: To allow users use suppressions configured in the same config with other modules. SuppressionFilter and SuppressionXpathFilter are require separate file.

    Advice: If checkstyle configuration is used for several projects, single suppressions on common files/folders is better to put in checkstyle configuration as common rule. All suppression that are for specific file names is better to keep in project specific config file.

    Attention: This filter only supports single suppression, and will need multiple instances if users wants to suppress multiple violations.

    SuppressionSingleFilter can suppress Checks that have Treewalker or Checker as parent module.

    • Property files - Define the RegExp for matching against the file name associated with an audit event. Type is java.util.regex.Pattern. Default value is null.
    • Property checks - Define the RegExp for matching against the name of the check associated with an audit event. Type is java.util.regex.Pattern. Default value is null.
    • Property message - Define the RegExp for matching against the message of the check associated with an audit event. Type is java.util.regex.Pattern. Default value is null.
    • Property id - Specify a string matched against the ID of the check associated with an audit event. Type is java.lang.String. Default value is null.
    • Property lines - Specify a comma-separated list of values, where each value is an integer or a range of integers denoted by integer-integer. Type is java.lang.String. Default value is null.
    • Property columns - Specify a comma-separated list of values, where each value is an integer or a range of integers denoted by integer-integer. Type is java.lang.String. Default value is null.

    The following suppressions directs a SuppressionSingleFilter to reject JavadocStyleCheck violations for lines 82 and 108 to 122 of file AbstractComplexityCheck.java, and MagicNumberCheck violations for line 221 of file JavadocStyleCheck.java, and 'Missing a Javadoc comment' violations for all lines and files:

     <module name="SuppressionSingleFilter">
       <property name="checks" value="JavadocStyleCheck"/>
       <property name="files" value="AbstractComplexityCheck.java"/>
       <property name="lines" value="82,108-122"/>
     </module>
     <module name="SuppressionSingleFilter">
       <property name="checks" value="MagicNumberCheck"/>
       <property name="files" value="JavadocStyleCheck.java"/>
       <property name="lines" value="221"/>
     </module>
     <module name="SuppressionSingleFilter">
       <property name="message" value="Missing a Javadoc comment"/>
     </module>
     

    Suppress check by module id when config have two instances on the same check:

     <module name="SuppressionSingleFilter">
       <property name="id" value="stringEqual"/>
       <property name="files" value="SomeTestCode.java"/>
     </module>
     

    Suppress all checks for hidden files and folders:

     <module name="SuppressionSingleFilter">
       <property name="files" value="[/\\]\..+"/>
       <property name="checks" value=".*"/>
     </module>
     

    Suppress all checks for Maven-generated code:

     <module name="SuppressionSingleFilter">
       <property name="files" value="[/\\]target[/\\]"/>
       <property name="checks" value=".*"/>
     </module>
     

    Suppress all checks for archives, classes and other binary files:

     <module name="SuppressionSingleFilter">
       <property name="files" value=".+\.(?:jar|zip|war|class|tar|bin)$"/>
       <property name="checks" value=".*"/>
     </module>
     

    Suppress all checks for image files:

     <module name="SuppressionSingleFilter">
       <property name="files" value=".+\.(?:png|gif|jpg|jpeg)$"/>
       <property name="checks" value=".*"/>
     </module>
     

    Suppress all checks for non-java files:

     <module name="SuppressionSingleFilter">
       <property name="files"
         value=".+\.(?:txt|xml|csv|sh|thrift|html|sql|eot|ttf|woff|css|png)$"/>
       <property name="checks" value=".*"/>
     </module>
     

    Suppress all checks in generated sources:

     <module name="SuppressionSingleFilter">
       <property name="files" value="com[\\/]mycompany[\\/]app[\\/]gen[\\/]"/>
       <property name="checks" value=".*"/>
     </module>
     

    Suppress FileLength check on integration tests in certain folder:

     <module name="SuppressionSingleFilter">
       <property name="files" value="com[\\/]mycompany[\\/]app[\\/].*IT.java"/>
       <property name="checks" value="FileLength"/>
     </module>
     

    Suppress naming violations on variable named 'log' in all files:

     <module name="SuppressionSingleFilter">
       <property name="message" value="Name 'log' must match pattern"/>
     </module>
     

    Parent is com.puppycrawl.tools.checkstyle.Checker

    Since:
    8.23
    • Field Summary

      Fields 
      Modifier and Type Field Description
      private Pattern checks
      Define the RegExp for matching against the name of the check associated with an audit event.
      private String columns
      Specify a comma-separated list of values, where each value is an integer or a range of integers denoted by integer-integer.
      private Pattern files
      Define the RegExp for matching against the file name associated with an audit event.
      private SuppressFilterElement filter
      SuppressFilterElement instance.
      private String id
      Specify a string matched against the ID of the check associated with an audit event.
      private String lines
      Specify a comma-separated list of values, where each value is an integer or a range of integers denoted by integer-integer.
      private Pattern message
      Define the RegExp for matching against the message of the check associated with an audit event.
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean accept​(AuditEvent event)
      Determines whether or not a filtered AuditEvent is accepted.
      protected void finishLocalSetup()
      Provides a hook to finish the part of this component's setup that was not handled by the bean introspection.
      void setChecks​(String checks)
      Setter to define the RegExp for matching against the name of the check associated with an audit event.
      void setColumns​(String columns)
      Setter to specify a comma-separated list of values, where each value is an integer or a range of integers denoted by integer-integer.
      void setFiles​(Pattern files)
      Setter to define the RegExp for matching against the file name associated with an audit event.
      void setId​(String id)
      Setter to specify a string matched against the ID of the check associated with an audit event.
      void setLines​(String lines)
      Setter to specify a comma-separated list of values, where each value is an integer or a range of integers denoted by integer-integer.
      void setMessage​(Pattern message)
      Setter to define the RegExp for matching against the message of the check associated with an audit event.
    • Field Detail

      • files

        private Pattern files
        Define the RegExp for matching against the file name associated with an audit event.
      • checks

        private Pattern checks
        Define the RegExp for matching against the name of the check associated with an audit event.
      • message

        private Pattern message
        Define the RegExp for matching against the message of the check associated with an audit event.
      • id

        private String id
        Specify a string matched against the ID of the check associated with an audit event.
      • lines

        private String lines
        Specify a comma-separated list of values, where each value is an integer or a range of integers denoted by integer-integer.
      • columns

        private String columns
        Specify a comma-separated list of values, where each value is an integer or a range of integers denoted by integer-integer.
    • Method Detail

      • setFiles

        public void setFiles​(Pattern files)
        Setter to define the RegExp for matching against the file name associated with an audit event.
        Parameters:
        files - regular expression for filtered file names
      • setChecks

        public void setChecks​(String checks)
        Setter to define the RegExp for matching against the name of the check associated with an audit event.
        Parameters:
        checks - the name of the check
      • setMessage

        public void setMessage​(Pattern message)
        Setter to define the RegExp for matching against the message of the check associated with an audit event.
        Parameters:
        message - the message of the check
      • setId

        public void setId​(String id)
        Setter to specify a string matched against the ID of the check associated with an audit event.
        Parameters:
        id - the ID of the check
      • setLines

        public void setLines​(String lines)
        Setter to specify a comma-separated list of values, where each value is an integer or a range of integers denoted by integer-integer.
        Parameters:
        lines - the lines of the check
      • setColumns

        public void setColumns​(String columns)
        Setter to specify a comma-separated list of values, where each value is an integer or a range of integers denoted by integer-integer.
        Parameters:
        columns - the columns of the check
      • finishLocalSetup

        protected void finishLocalSetup()
        Description copied from class: AutomaticBean
        Provides a hook to finish the part of this component's setup that was not handled by the bean introspection.

        The default implementation does nothing.

        Specified by:
        finishLocalSetup in class AutomaticBean
      • accept

        public boolean accept​(AuditEvent event)
        Description copied from interface: Filter
        Determines whether or not a filtered AuditEvent is accepted.
        Specified by:
        accept in interface Filter
        Parameters:
        event - the AuditEvent to filter.
        Returns:
        true if the event is accepted.