5 Reasons Why Maven Sux

5 Reasons Why

Maven Sux

Carlos Sanchez

CommunityOne @ JavaOne

May 5, 2008

About Me

During the day

Director at Exist Global

At night

Member of Apache Maven PMC

Committer at the Eclipse Foundation

#1 Losing control

<project> <modelVersion> 4.0.0 </modelVersion> <groupId> org.acme </groupId> <artifactId> acmeapp </artifactId> <version> 1.0-SNAPSHOT </version> <dependencies> <dependency> <groupId> org.hibernate </groupId> <artifactId> hibernate </artifactId> <version> 3.2.6.ga </version> </dependency> <dependency> <groupId> junit </groupId> <artifactId> junit </artifactId> <version> 3.8.1 </version> <scope> test </scope> </dependency> </dependencies> </project>

section .text global _start ;must be declared for linker (ld) _start: ;tell linker entry point mov edx,len ;message length mov ecx,msg ;message to write mov ebx,1 ;file descriptor (stdout) mov eax,4 ;system call number (sys_write) int 0x80 ;call kernel mov eax,1 ;system call number (sys_exit) int 0x80 ;call kernel section .data msg db 'Hello, world!',0xa ;our dear string len equ $ - msg ;length of our dear string

#2 Repository madness

<project> <modelVersion> 4.0.0 </modelVersion> <groupId> org.acme </groupId> <artifactId> acmeapp </artifactId> <version> 1.0-SNAPSHOT </version> <dependencies> <dependency> <groupId> org.hibernate </groupId> <artifactId> hibernate </artifactId> <version> 3.2.6.ga 3.2.7 </version> </dependency> <dependency> <groupId> junit </groupId> <artifactId> junit </artifactId> <version> 3.8.1 </version> <scope> test </scope> </dependency> </dependencies> </project>

myproject/lib hibernate.jar myotherproject/lib hibernate.jar

upgrading is so easy

productivity!

Oh, you forgot ASM or CGLIB or

#3 Snapshot downloads

<project> <modelVersion> 4.0.0 </modelVersion> <groupId> org.acme </groupId> <artifactId> acmeapp </artifactId> <version> 1.0-SNAPSHOT </version> <dependencies> <dependency> <groupId> org.acme </groupId> <artifactId> mylib </artifactId> <version> 1.0-SNAPSHOT </version> </dependency> </dependencies> </project>

Build mylib.jar

Send mylib.jar by email

Receive mylib.jar

Copy mylib.jar to myproject/lib

Copy mylib.jar to myotherproject/lib

Fix a bug ... shit happens

Build mylib.jar ... don't use versions, waste of time

Send mylib.jar by email

Receive mylib.jar

Copy mylib.jar to myproject/lib

you screwed mylib myotherproject doesn't work

#4 Reports

mvn checkstyle:checkstyle

New things to worry about

Real men write perfect code

any resemblance to existing persons is based on experience

Thanks

[email_address]

http://www.carlossanchez.eu

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