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Use Maven in Right Way
Make build configurations effective with dependencyManagement,
pluginManagement and profiles
Monday, May 21, 12
<dependency> <groupId>my-group1</groupId> <artifactId>artifact</artifactId> <version>1.0</version></dependency>
Typical Dependency
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<dependency> <groupId>my-group1</groupId> <artifactId>artifact</artifactId> <version>1.0</version></dependency>
Typical Dependency
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Problem Set
20 dependencies chaotically distributed per 5 modules
Review all modules to make change in dependency
The worst case it takes 6 reviews
The worst case it takes 120 changes
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Version in property
<artifact.version>1.0</artifact.version>
<dependency> <groupId>my-group1</groupId> <artifactId>artifact</artifactId> <version>${artifact.version}</version></dependency>
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Extended Dependency
<dependency> <groupId>my-group1</groupId> <artifactId>artifact</artifactId> <version>${artifact.version}</version> <scope>provided</scope> <classifier>jdk15</classifier> <optional>true</optional> <packaging>zip</packaging></dependency>
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Exclusions<dependency> <groupId>my-group1</groupId> <artifactId>artifact</artifactId> ... <exclusions> <exclusion> <groupId>exclude-group</groupId> <groupId>exclude</groupId> </exclusion> </exclusions></dependency>
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Inject Management
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Solution 1
All dependency configuration in one place
The worst case it takes 1 review to change ANY property of ANY dependency
The worst case it takes 20 changes
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Typical Plugin<build> <plugins> <plugin> <groupId>plugin-group</groupId> <artifactId>plugin</artifactId> <version>1.0</version> <configuration>...</configuration> <executions>...</executions> </plugin> </plugins></build>
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Problem Set 2
10 plugins chaotically distributed per 5 modules
Duplicates
The worst case it takes 6 reviews to update plugins
The worst case it takes 240 changes
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Inject Management
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Solution 2
All plugins defines in one place
NO DUPLICATES
In the worst case it takes 1 review to update plugins
In the worst case it takes 40 changes
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One more thing...
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Problem Set 3
Separate unit tests and integration tests
Integration environment to run integration tests ONLY
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Solution 3
Integration profile
Common configuration in default pluginManagement
Executions & configuration customization in profile
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Thank you!
Anton Naumovemail: [email protected]
twitter: antonnaumovblog: http://antonnaumov.posterous.com
Monday, May 21, 12
