| <?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"> |
| |
| <!-- This is a checkstyle configuration file. For descriptions of |
| what the following rules do, please see the checkstyle configuration |
| page at http://checkstyle.sourceforge.net/config.html --> |
| |
| <module name="Checker"> |
| <property name="severity" value="error"/> |
| |
| <module name="Header"> |
| <property name="headerFile" value="${checkstyle.config.base.path}/checkstyle-header.txt" default="tools/maven/checkstyle-header.txt"/> |
| <property name="fileExtensions" value="java"/> |
| </module> |
| |
| <module name="FileTabCharacter"> |
| <!-- Checks that there are no tab characters in the file. --> |
| </module> |
| |
| <module name="RegexpSingleline"> |
| <!-- Checks that TODOs don't have stuff in parenthesis, e.g., username. --> |
| <property name="format" value="((//.*)|(\*.*))TODO\(" /> |
| <property name="message" value="TODO comments must not include usernames." /> |
| <property name="severity" value="error" /> |
| </module> |
| |
| <module name="RegexpSingleline"> |
| <property name="format" value="\s+$"/> |
| <property name="message" value="Trailing whitespace"/> |
| <property name="severity" value="error"/> |
| </module> |
| |
| <module name="RegexpSingleline"> |
| <property name="format" value="Throwables.propagate\("/> |
| <property name="message" value="Throwables.propagate is deprecated"/> |
| <property name="severity" value="error"/> |
| </module> |
| |
| <!-- Prevent *Tests.java as tools may not pick them up --> |
| <module name="RegexpOnFilename"> |
| <property name="fileNamePattern" value=".*Tests\.java$" /> |
| </module> |
| |
| <!-- |
| LENGTH and CODING CHECKS |
| --> |
| |
| <module name="LineLength"> |
| <!-- Checks if a line is too long. --> |
| <property name="max" value="120"/> |
| <property name="severity" value="error"/> |
| |
| <!-- |
| The default ignore pattern exempts the following elements: |
| - import statements |
| - long URLs inside comments |
| --> |
| |
| <property name="ignorePattern" |
| value="^(package .*;\s*)|(import .*;\s*)|( *\* .*https?://.*)$"/> |
| </module> |
| |
| <module name="SuppressWarningsFilter"/> |
| |
| <!-- Check that every module has a package-info.java --> |
| <!--<module name="JavadocPackage"/>--> |
| |
| <!-- All Java AST specific tests live under TreeWalker module. --> |
| <module name="TreeWalker"> |
| |
| <module name="SuppressWarningsHolder" /> |
| |
| <module name="TodoComment"> |
| <!-- Checks that disallowed strings are not used in comments. --> |
| <property name="format" value="(FIXME)|(XXX)|(@author)" /> |
| </module> |
| |
| <!-- |
| ANNOTATIONS CHECKS |
| --> |
| |
| <module name="MissingDeprecated" /> |
| |
| <!-- |
| IMPORT CHECKS |
| --> |
| |
| <module name="RedundantImport"> |
| <!-- Checks for redundant import statements. --> |
| <property name="severity" value="error"/> |
| <message key="import.redundancy" |
| value="Redundant import {0}."/> |
| </module> |
| |
| <module name="ImportOrder"> |
| <!-- Checks for out of order import statements. --> |
| <property name="severity" value="error"/> |
| <property name="groups" value="org.apache.streampipes,*,jakarta,javax,java,scala"/> |
| <property name="separated" value="true"/> |
| <property name="sortStaticImportsAlphabetically" value="true"/> |
| <property name="option" value="bottom"/> |
| <property name="tokens" value="STATIC_IMPORT, IMPORT"/> |
| <message key="import.ordering" |
| value="Import {0} appears after other imports that it should precede"/> |
| </module> |
| |
| <module name="AvoidStarImport"> |
| <property name="severity" value="error"/> |
| </module> |
| |
| <module name="IllegalImport"> |
| <property name="illegalPkgs" value="autovalue.shaded, avro.shaded, com.google.api.client.repackaged, com.google.appengine.repackaged, io.netty.util.internal"/> |
| </module> |
| |
| <module name="RedundantModifier"> |
| <!-- Checks for redundant modifiers on various symbol definitions. |
| See: http://checkstyle.sourceforge.net/config_modifier.html#RedundantModifier |
| --> |
| <property name="tokens" value="METHOD_DEF, VARIABLE_DEF, ANNOTATION_FIELD_DEF, INTERFACE_DEF, CLASS_DEF, ENUM_DEF"/> |
| </module> |
| |
| <!-- |
| IllegalImport cannot blacklist classes, and c.g.api.client.util is used for some shaded |
| code and some useful code. So we need to fall back to Regexp. |
| --> |
| <module name="RegexpSinglelineJava"> |
| <property name="format" value="com\.google\.api\.client\.util\.(ByteStreams|Charsets|Collections2|Joiner|Lists|Maps|Objects|Preconditions|Sets|Strings|Throwables)"/> |
| </module> |
| |
| <!-- |
| Require static importing from Preconditions. |
| --> |
| <module name="RegexpSinglelineJava"> |
| <property name="format" value="^import com.google.common.base.Preconditions;$"/> |
| <property name="message" value="Static import functions from Guava Preconditions"/> |
| </module> |
| |
| <module name="UnusedImports"> |
| <property name="severity" value="error"/> |
| <property name="processJavadoc" value="true"/> |
| <message key="import.unused" |
| value="Unused import: {0}."/> |
| </module> |
| |
| <!-- |
| JAVADOC CHECKS |
| --> |
| |
| <!-- Checks for Javadoc comments. --> |
| <!-- See http://checkstyle.sf.net/config_javadoc.html --> |
| <!--<module name="JavadocMethod">--> |
| <!--<property name="scope" value="protected"/>--> |
| <!--<property name="severity" value="error"/>--> |
| <!--<property name="allowMissingJavadoc" value="true"/>--> |
| <!--<property name="allowMissingParamTags" value="true"/>--> |
| <!--<property name="allowMissingReturnTag" value="true"/>--> |
| <!--<property name="allowMissingThrowsTags" value="true"/>--> |
| <!--<property name="allowThrowsTagsForSubclasses" value="true"/>--> |
| <!--<property name="allowUndeclaredRTE" value="true"/>--> |
| <!--</module>--> |
| |
| <!-- Check that paragraph tags are used correctly in Javadoc. --> |
| <!--<module name="JavadocParagraph"/>--> |
| |
| <!--<module name="JavadocType">--> |
| <!--<property name="scope" value="protected"/>--> |
| <!--<property name="severity" value="error"/>--> |
| <!--<property name="allowMissingParamTags" value="true"/>--> |
| <!--</module>--> |
| |
| <!--<module name="JavadocStyle">--> |
| <!--<property name="severity" value="error"/>--> |
| <!--<property name="checkHtml" value="true"/>--> |
| <!--</module>--> |
| |
| <!-- |
| NAMING CHECKS |
| --> |
| |
| <!-- Item 38 - Adhere to generally accepted naming conventions --> |
| |
| <module name="PackageName"> |
| <!-- Validates identifiers for package names against the |
| supplied expression. --> |
| <!-- Here the default checkstyle rule restricts package name parts to |
| seven characters, this is not in line with common practice at Google. |
| --> |
| <property name="format" value="^[a-z]+(\.[a-z][a-z0-9]{1,})*$"/> |
| <property name="severity" value="error"/> |
| </module> |
| |
| <module name="TypeNameCheck"> |
| <!-- Validates static, final fields against the |
| expression "^[A-Z][a-zA-Z0-9]*$". --> |
| <metadata name="altname" value="TypeName"/> |
| <property name="severity" value="error"/> |
| </module> |
| |
| <module name="ConstantNameCheck"> |
| <!-- Validates non-private, static, final fields against the supplied |
| public/package final fields "^[A-Z][A-Z0-9]*(_[A-Z0-9]+)*$". --> |
| <metadata name="altname" value="ConstantName"/> |
| <property name="applyToPublic" value="true"/> |
| <property name="applyToProtected" value="true"/> |
| <property name="applyToPackage" value="true"/> |
| <property name="applyToPrivate" value="false"/> |
| <property name="format" value="^([A-Z][A-Z0-9]*(_[A-Z0-9]+)*|FLAG_.*)$"/> |
| <message key="name.invalidPattern" |
| value="Variable ''{0}'' should be in ALL_CAPS (if it is a constant) or be private (otherwise)."/> |
| <property name="severity" value="error"/> |
| </module> |
| |
| <module name="StaticVariableNameCheck"> |
| <!-- Validates static, non-final fields against the supplied |
| expression "^[a-z][a-zA-Z0-9]*_?$". --> |
| <metadata name="altname" value="StaticVariableName"/> |
| <property name="applyToPublic" value="true"/> |
| <property name="applyToProtected" value="true"/> |
| <property name="applyToPackage" value="true"/> |
| <property name="applyToPrivate" value="true"/> |
| <property name="format" value="^[a-z][a-zA-Z0-9]*_?$"/> |
| <property name="severity" value="error"/> |
| </module> |
| |
| <module name="MemberNameCheck"> |
| <!-- Validates non-static members against the supplied expression. --> |
| <metadata name="altname" value="MemberName"/> |
| <property name="applyToPublic" value="true"/> |
| <property name="applyToProtected" value="true"/> |
| <property name="applyToPackage" value="true"/> |
| <property name="applyToPrivate" value="true"/> |
| <property name="format" value="^[a-z][a-zA-Z0-9]*$"/> |
| <property name="severity" value="error"/> |
| </module> |
| |
| <module name="MethodNameCheck"> |
| <!-- Validates identifiers for method names. --> |
| <metadata name="altname" value="MethodName"/> |
| <property name="format" value="^[a-z][a-zA-Z0-9]*(_[a-zA-Z0-9]+)*$"/> |
| <property name="severity" value="error"/> |
| </module> |
| |
| <module name="ParameterName"> |
| <!-- Validates identifiers for method parameters against the |
| expression "^[a-z][a-zA-Z0-9]*$". --> |
| <property name="severity" value="error"/> |
| </module> |
| |
| <module name="LocalFinalVariableName"> |
| <!-- Validates identifiers for local final variables against the |
| expression "^[a-z][a-zA-Z0-9]*$". --> |
| <property name="severity" value="error"/> |
| </module> |
| |
| <module name="LocalVariableName"> |
| <!-- Validates identifiers for local variables against the |
| expression "^[a-z][a-zA-Z0-9]*$". --> |
| <property name="severity" value="error"/> |
| </module> |
| |
| <!-- Type parameters must be either one of the four blessed letters |
| T, K, V, W, X or else be capital-case terminated with a T, |
| such as MyGenericParameterT --> |
| <module name="ClassTypeParameterName"> |
| <property name="format" value="^(((T|K|V|W|X)[0-9]*)|([A-Z][a-z][a-zA-Z]*T))$"/> |
| <property name="severity" value="error"/> |
| </module> |
| |
| <module name="MethodTypeParameterName"> |
| <property name="format" value="^(((T|K|V|W|X)[0-9]*)|([A-Z][a-z][a-zA-Z]*T))$"/> |
| <property name="severity" value="error"/> |
| </module> |
| |
| <module name="InterfaceTypeParameterName"> |
| <property name="format" value="^(((T|K|V|W|X)[0-9]*)|([A-Z][a-z][a-zA-Z]*T))$"/> |
| <property name="severity" value="error"/> |
| </module> |
| |
| <module name="LeftCurly"> |
| <!-- Checks for placement of the left curly brace ('{'). --> |
| <property name="severity" value="error"/> |
| </module> |
| |
| <module name="RightCurly"> |
| <!-- Checks right curlies on CATCH, ELSE, and TRY blocks are on |
| the same line. e.g., the following example is fine: |
| <pre> |
| if { |
| ... |
| } else |
| </pre> |
| --> |
| <!-- This next example is not fine: |
| <pre> |
| if { |
| ... |
| } |
| else |
| </pre> |
| --> |
| <property name="option" value="same"/> |
| <property name="severity" value="error"/> |
| </module> |
| |
| <!-- Checks for braces around if and else blocks --> |
| <module name="NeedBraces"> |
| <property name="severity" value="error"/> |
| <property name="tokens" value="LITERAL_IF, LITERAL_ELSE, LITERAL_FOR, LITERAL_WHILE, LITERAL_DO"/> |
| </module> |
| |
| <module name="UpperEll"> |
| <!-- Checks that long constants are defined with an upper ell.--> |
| <property name="severity" value="error"/> |
| </module> |
| |
| <module name="FallThrough"> |
| <!-- Warn about falling through to the next case statement. Similar to |
| javac -Xlint:fallthrough, but the check is suppressed if a single-line comment |
| on the last non-blank line preceding the fallen-into case contains 'fall through' (or |
| some other variants that we don't publicized to promote consistency). |
| --> |
| <property name="reliefPattern" |
| value="fall through|Fall through|fallthru|Fallthru|falls through|Falls through|fallthrough|Fallthrough|No break|NO break|no break|continue on"/> |
| <property name="severity" value="error"/> |
| </module> |
| |
| <!-- Checks for over-complicated boolean expressions. --> |
| <module name="SimplifyBooleanExpression"/> |
| |
| <!-- Detects empty statements (standalone ";" semicolon). --> |
| <module name="EmptyStatement"/> |
| |
| <!-- |
| MODIFIERS CHECKS |
| --> |
| |
| <module name="ModifierOrder"> |
| <!-- Warn if modifier order is inconsistent with JLS3 8.1.1, 8.3.1, and |
| 8.4.3. The prescribed order is: |
| public, protected, private, abstract, static, final, transient, volatile, |
| synchronized, native, strictfp |
| --> |
| <property name="severity" value="error"/> |
| </module> |
| |
| |
| <!-- |
| WHITESPACE CHECKS |
| --> |
| <module name="EmptyLineSeparator"> |
| <property name="allowNoEmptyLineBetweenFields" value="false"/> |
| <property name="allowMultipleEmptyLines" value="true"/> |
| <property name="allowMultipleEmptyLinesInsideClassMembers" value="true"/> |
| <property name="tokens" value="IMPORT,CLASS_DEF,INTERFACE_DEF,STATIC_INIT, |
| INSTANCE_INIT,ENUM_DEF,CTOR_DEF" /> |
| <!-- we don't want blank lines between member variables, so don't use VARIABLE_DEF --> |
| <!-- eventually add: METHOD_DEF --> |
| </module> |
| |
| <module name="WhitespaceAround"> |
| <!-- Checks that various tokens are surrounded by whitespace. |
| This includes most binary operators and keywords followed |
| by regular or curly braces. |
| --> |
| <property name="tokens" value="ASSIGN, BAND, BAND_ASSIGN, BOR, |
| BOR_ASSIGN, BSR, BSR_ASSIGN, BXOR, BXOR_ASSIGN, COLON, DIV, DIV_ASSIGN, |
| EQUAL, GE, GT, LAND, LE, LITERAL_CATCH, LITERAL_DO, LITERAL_ELSE, |
| LITERAL_FINALLY, LITERAL_FOR, LITERAL_IF, LITERAL_RETURN, |
| LITERAL_SYNCHRONIZED, LITERAL_TRY, LITERAL_WHILE, LOR, LT, MINUS, |
| MINUS_ASSIGN, MOD, MOD_ASSIGN, NOT_EQUAL, PLUS, PLUS_ASSIGN, QUESTION, |
| SL, SL_ASSIGN, SR_ASSIGN, STAR, STAR_ASSIGN"/> |
| <property name="severity" value="error"/> |
| </module> |
| |
| <module name="WhitespaceAfter"> |
| <!-- Checks that commas, semicolons and typecasts are followed by |
| whitespace. |
| --> |
| <property name="tokens" value="COMMA, SEMI, TYPECAST"/> |
| </module> |
| |
| <module name="NoWhitespaceAfter"> |
| <!-- Checks that there is no whitespace after various unary operators. |
| Linebreaks are allowed. |
| --> |
| <property name="tokens" value="BNOT, DEC, DOT, INC, LNOT, UNARY_MINUS, |
| UNARY_PLUS"/> |
| <property name="allowLineBreaks" value="true"/> |
| <property name="severity" value="error"/> |
| </module> |
| |
| <module name="NoWhitespaceBefore"> |
| <!-- Checks that there is no whitespace before various unary operators. |
| Linebreaks are allowed. |
| --> |
| <property name="tokens" value="SEMI, DOT, POST_DEC, POST_INC"/> |
| <property name="allowLineBreaks" value="true"/> |
| <property name="severity" value="error"/> |
| </module> |
| |
| <module name="OperatorWrap"> |
| <!-- Checks that operators like + and ? appear at newlines rather than |
| at the end of the previous line. |
| --> |
| <property name="option" value="NL"/> |
| <property name="tokens" value="BAND, BOR, BSR, BXOR, DIV, EQUAL, |
| GE, GT, LAND, LE, LITERAL_INSTANCEOF, LOR, LT, MINUS, MOD, |
| NOT_EQUAL, PLUS, QUESTION, SL, SR, STAR "/> |
| </module> |
| |
| <module name="OperatorWrap"> |
| <!-- Checks that assignment operators are at the end of the line. --> |
| <property name="option" value="eol"/> |
| <property name="tokens" value="ASSIGN"/> |
| </module> |
| |
| <module name="ParenPad"> |
| <!-- Checks that there is no whitespace before close parens or after |
| open parens. |
| --> |
| <property name="severity" value="error"/> |
| </module> |
| |
| <module name="Indentation"> |
| <property name="basicOffset" value="2"/> |
| <property name="braceAdjustment" value="2"/> |
| <property name="caseIndent" value="2"/> |
| <property name="throwsIndent" value="4"/> |
| <property name="lineWrappingIndentation" value="4"/> |
| <property name="arrayInitIndent" value="2"/> |
| </module> |
| </module> |
| </module> |