Conditonally set property in maven

user_4461537 0
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I want to set a property conditionally in maven depending on whether it is a snapshot build or not. The pseudocode looks as follows

if ${project.version} ends with "-SNAPSHOT"     
then
   deployFileUrl = ${project.distributionManagement.snapshotRepository.url}
else
   deployFileUrl = ${project.distributionManagement.repository.url}

How can I implement this in maven?

I tried it with the build-helper-maven-plugin as follows

 <plugin>
    <groupId>org.codehaus.mojo</groupId>
     <artifactId>build-helper-maven-plugin</artifactId>
        <executions>
            <execution>
                <id>regex-properties</id>
                <goals>
                    <goal>regex-properties</goal>
                </goals>
                    <configuration>
                        <regexPropertySettings>
                            <regexPropertySetting>
                                <name>deployFileUrl</name>
                                <value>${project.version}</value>
                                <regex>.*-SNAPSHOT</regex>
                                <replacement>${project.distributionManagement.snapshotRepository.url}</replacement>
                                <failIfNoMatch>false</failIfNoMatch>
                            </regexPropertySetting>
                        </regexPropertySettings>
                    </configuration>
                </execution>
            </executions>
        </plugin>

The problem with this approach is that I can not implement the else-condition.

maven java
3 Answers

To set the property to two different values depends on a snapshot build (or another condition) you can use the following: 

            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>build-helper-maven-plugin</artifactId>
                <version>3.0.0</version>
                <executions>
                    <execution>
                        <!-- sets the only.when.is.snapshot.used property to true
                        if SNAPSHOT was used, to the project version otherwise -->
                        <id>build-helper-regex-is-snapshot-used</id>
                        <goals>
                            <goal>regex-property</goal>
                        </goals>
                        <configuration>
                            <name>dockerTag</name>
                            <value>${project.version} dev latest</value>
                            <regex>(?=.*SNAPSHOT).*(dev).*|.*(latest).*</regex>
                            <replacement>$1$2</replacement>
                            <failIfNoMatch>false</failIfNoMatch>
                        </configuration>
                    </execution>
                </executions>
            </plugin>

It set dockerTag property to dev or latest depends on build type.

If you wants to change property values is should change it in two places.For example for true and false use <value>${project.version} true false</value> and <regex>(?=.*SNAPSHOT).*(true).*|.*(false).*</regex>.

user_2730430
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