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https://issues.apache.org/jira/browse/MNG-8286?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Guillaume Nodet closed MNG-8286.
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Resolution: Fixed
> Add a condition profile based on a simple expressions
> -----------------------------------------------------
>
> Key: MNG-8286
> URL: https://issues.apache.org/jira/browse/MNG-8286
> Project: Maven
> Issue Type: Sub-task
> Components: Profiles
> Reporter: Guillaume Nodet
> Assignee: Guillaume Nodet
> Priority: Major
> Fix For: 4.0.0-rc-1
>
>
> GitHub Pull Request: [https://github.com/apache/maven/pull/1771]
> h1. Condition-Based Profile Activation in Maven
> In addition to the traditional activation mechanisms (JDK version, OS
> properties, file existence, etc.), Maven now supports a powerful
> condition-based activation through the condition field. This new mechanism
> allows for more flexible and expressive profile activation rules.
> h2. Condition Syntax
> The condition is specified as a string expression that can include various
> functions, comparisons, and logical operators.
> Some key features include:
> Property access: {{{}$\{property.name{}}}}
> Comparison operators: {{{}=={}}}, {{{}!={}}}, {{{}<{}}}, {{{}>{}}},
> {{{}<={}}}, {{>=}}
> Logical operators: {{&&}} (AND), {{||}} (OR), {{not(...)}}
> Functions: {{{}exists(...){}}}, {{{}missing(...){}}}, {{{}matches(...){}}},
> {{{}inrange(...){}}}, and more
> h2. Supported Functions
> The following functions are supported in condition expressions:
> * {{{}length(string){}}}: Returns the length of the given string.
> * {{{}upper(string){}}}: Converts the string to uppercase.
> * {{{}lower(string){}}}: Converts the string to lowercase.
> * {{{}substring(string, start, [end]){}}}: Returns a substring of the given
> string.
> * {{{}indexOf(string, substring){}}}: Returns the index of the first
> occurrence of substring in string, or -1 if not found.
> * {{{}contains(string, substring){}}}: Checks if the string contains the
> substring.
> * {{{}matches(string, regex){}}}: Checks if the string matches the given
> regular expression.
> * {{{}not(condition){}}}: Negates the given condition.
> * {{{}if(condition, trueValue, falseValue){}}}: Returns trueValue if the
> condition is true, falseValue otherwise.
> * {{{}exists(path){}}}: Checks if a file matching the given glob pattern
> exists.
> * {{{}missing(path){}}}: Checks if a file matching the given glob pattern
> does not exist.
> * {{{}inrange(version, range){}}}: Checks if the given version is within the
> specified version range.
> h2. Supported properties
> The following properties are supported in expressions:
> * {{{}project.basedir{}}}: The project directory
> * {{{}project.rootDirectory{}}}: The root directory of the project
> * {{{}project.artifactId{}}}: The artifactId of the project
> * {{{}project.packaging{}}}: The packaging of the project
> * user properties
> * system properties (including environment variables prefixed with env.)
> h2. Examples
> * JDK version range: {{inrange(${java.version}, '[11,)')}} (JDK 11 or higher)
> * OS check: {{${os.name} == 'windows'}}
> * File existence: {{exists('${project.basedir}/src/** /*.xsd')}}
> * Property check: {{${my.property} != 'some-value'}}
> * Regex matching: {{matches(${os.version}, '.*aws')}}
> * Complex condition: {{${os.name} == 'windows' && ${os.arch} != 'amd64' &&
> inrange(${os.version}, '[10,)')}}
> * String length check: {{length(${user.name}) > 5}}
> * Substring with version: {{substring(${java.version}, 0, 3) == '1.8'}}
> * Using indexOf: {{indexOf(${java.version}, '-') > 0}}
> * Conditional logic: {{if(contains(${java.version}, '-'),
> substring(${java.version}, 0, indexOf(${java.version}, '-')),
> ${java.version})}}
> This flexible condition mechanism allows for more precise control over
> profile activation, enabling developers to create profiles that respond to a
> wide range of environmental factors and project states.
> This will be triggered using a new profile activation in the 4.1.0 model:
> {code:xml}
> <profile>
> <activation>
> <condition>inrange(${maven.version}, '[4,)')</condition>
> </activation>
> </profile>
> {code}
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