I raised an issue on Gradle jira the other day – so I thought I would fix it.
It is a groovy script that takes a pom.xml in the current directory, reads the dependencies and outputs Gradle formatted dependencies.
The Jira issue is here:
http://jira.codehaus.org/browse/GRADLE-154
It’s a work in progress, but it’s looking pretty good so I thought I’d post it here. Groovy rocks btw!
(btw, I gave up trying to get wordpress to stop trying to insert smiley faces. if you want the actual code, go to the jira issue)
Basically it works in a few steps.
- First step is to read in the pom.xml file and get it’s text into a string – easy.
- Next is to use the Groovy XmlSlurper library to parse the text string and get a reference to the outer project element.
- Then we can use GPath to navigate the object hierarchy and retrieve the collection of dependency nodes.
- Then using Groovy Looping and mapping a Groovy Closure to each element, we collect together all the dependency nodes into corresponding collections depending on their scope value.
- Next we define some utility functions that I will go over soon.
- Then for each collection, one at a time, we take each element and call our print function.
- The print function then checks the exclusions node to see if it exists, if so it branches off, otherwise we call our simple print function.
- Both print functions use GStrings to construct the print statements.
- The complex print statement does one extra task which is iterate over each ‘exclusion’ node and print out the artifact id.
/*
* Copyright 2007 the original author or authors.
*
* Licensed 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.
*/
/**
* This script takes the pom.xml in the current directory, reads the from it dependencies
* and outputs Gradle formatted dependencies.
*
* It currently is quite simplistic and does not perform any checks on inherited
* dependencies or retreive version numbers from variables deplared in the pom.
*
* @author Antony Stubbs <antony.stubbs@gmail.com>
*/
// debug - print out our current working directory
println "Working path:" + new File(".").getAbsolutePath()
// read in the pom.xml file and get it’s text into a string
pomContent = new File("pom.xml").text
// use the Groovy XmlSlurper library to parse the text string and get a reference to the outer project element.
def project = new XmlSlurper().parseText(pomContent)
// use GPath to navigate the object hierarchy and retrieve the collection of dependency nodes.
def dependencies = project.dependencies.dependency
def compileTimeScope = []
def runTimeScope = []
def testScope = []
def providedScope = []
def systemScope = []
// using Groovy Looping and mapping a Groovy Closure to each element, we collect together all
// the dependency nodes into corresponding collections depending on their scope value.
dependencies.each() {
def scope = (elementHasText(it.scope)) ? it.scope : "compile"
switch (scope) {
case "compile":
compileTimeScope.add(it)
break
case "test":
testScope.add(it)
break
case "provided":
providedScope.add(it)
break
case "runtime":
runTimeScope.add(it)
break
case "system":
systemScope.add(it)
break
}
}
/**
* print function then checks the exclusions node to see if it exists, if
* so it branches off, otherwise we call our simple print function
*/
def printGradleDep = {String scope, it ->
def exclusions = it.exclusions.exclusion
if (exclusions.size() > 0) {
printComplexDependency(it, scope)
} else {
printBasicDependency(it, scope)
}
}
/**
* complex print statement does one extra task which is iterate over each
* ‘exclusion’ node and print out the artifact id.
*/
private def printComplexDependency(it, scope) {
println "addDependency(['${scope}'], \"${contructSignature(it)}\" ) {"
it.exclusions.exclusion.each() {
println " exclude(module: '${it.artifactId}')"
}
println "}"
}
/**
* Print out the basic form og gradle dependency
*/
private def printBasicDependency(it, String scope) {
def classifier = contructSignature(it)
println "${scope}: \"${classifier}\""
}
/**
* Construct and return the signature of a dependency, including it's version and
* classifier if it exists
*/
private def contructSignature(it) {
def gradelDep = "${it.groupId.text()}:${it.artifactId.text()}:${it?.version?.text()}"
def classifier = elementHasText(it.classifier) ? gradelDep + ":" + it.classifier.text().trim() : gradelDep
return classifier
}
/**
* Check to see if the selected node has content
*/
private boolean elementHasText(it) {
return it.text().length() != 0
}
// for each collection, one at a time, we take each element and call our print function
compileTimeScope.each() { printGradleDep("compile", it) }
runTimeScope.each() { printGradleDep("runtime", it) }
testScope.each() { printGradleDep("testCompile", it) }
providedScope.each() { printGradleDep("provided", it) }
systemScope.each() { printGradleDep("system", it) }
Which converts this:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>asdfsafd</groupId>
<artifactId>asdfsafd</artifactId>
<version>asdfsadf</version>
<relativePath>../pom.xml</relativePath>
</parent>
<groupId>awf3</groupId>
<artifactId>asf</artifactId>
<packaging>asfe</packaging>
<name>asfeasef</name>
<profiles>
<profile>
<id>jetty</id>
<activation>
<property>
<name>jetty</name>
</property>
</activation>
<dependencies>
<!-- For local data source -->
<dependency>
<groupId>oracle.jdbc.driver</groupId>
<artifactId>OracleDriver</artifactId>
<version>10.2.0.3</version>
<!-- <version>11.1.0.6</version> -->
<scope>compile</scope>
</dependency>
<dependency>
<groupId>javax.jms</groupId>
<artifactId>jms</artifactId>
<version>1.1</version>
<scope>compile</scope>
</dependency>
</dependencies>
</profile>
</profiles>
<!-- All the commons logging exclusions can be removed now -->
<dependencies>
<!-- Used in JUnit tests -->
<dependency>
<groupId>org.easymock</groupId>
<artifactId>easymock</artifactId>
<version>2.3</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.easymock</groupId>
<artifactId>easymockclassextension</artifactId>
<version>2.2.2</version>
<scope>test</scope>
<classifier>jdk14</classifier>
</dependency>
<!-- WebSphere library. Compile time dependency from OracleUtils in order to
unwrap connections to call Oracle's setSessionTimezone for
TIMESTAMP WITH LOCAL TIME ZONE data type. -->
<dependency>
<groupId>com.ibm</groupId>
<artifactId>WebSphere-Runtime</artifactId>
<version>6.1.0.13</version>
<scope>system</scope>
<!-- the following path must be on on one line-->
<systemPath>
c:/progra~1/IBM/SDP70/runtimes/base_v61/plugins/com.ibm.ws.runtime_6.1.0.jar
</systemPath>
</dependency>
<!-- Connection pooling and testing (keep-alive) -->
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.2</version>
<scope>compile</scope>
</dependency>
<!-- JaxB Message classes -->
<dependency>
<groupId>com.fonterra.tams</groupId>
<artifactId>msg-classes</artifactId>
<version>1.0.0</version>
</dependency>
<!-- Compile dependency and used for testing. Is provided in WS environment -->
<dependency>
<groupId>oracle.jdbc.driver</groupId>
<artifactId>OracleDriver</artifactId>
<version>10.2.0.3</version>
<!-- <version>11.1.0.6</version> -->
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts-core</artifactId>
<version>1.3.8</version>
<exclusions>
<exclusion>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts-extras</artifactId>
<version>1.3.8</version>
<exclusions>
<exclusion>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts-taglib</artifactId>
<version>1.3.8</version>
<exclusions>
<exclusion>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.apache.ibatis</groupId>
<artifactId>ibatis-sqlmap</artifactId>
<version>2.3.0</version>
<exclusions>
<exclusion>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>2.5</version>
<exclusions>
<exclusion>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>2.5</version>
<exclusions>
<exclusion>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>2.5</version>
<exclusions>
<exclusion>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>2.5</version>
<exclusions>
<exclusion>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate</artifactId>
<!-- <version>3.3.0-SNAPSHOT-TAMS-CUSTOM</version> -->
<version>3.2.5.ga</version>
<scope>compile</scope>
<exclusions>
<exclusion>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>2.3</version>
</dependency>
<!-- Not used by application - only used by jax bean generator -->
<!--
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-xjc</artifactId>
<version>2.0.3</version>
</dependency>
-->
<!-- Used at com.fonterra.tams.util.SchemaUtil.init(SchemaUtil.java:65) -->
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<version>2.0.3</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.1</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>opensymphony</groupId>
<artifactId>sitemesh</artifactId>
<version>2.3</version>
</dependency>
<dependency>
<groupId>displaytag</groupId>
<artifactId>displaytag</artifactId>
<version>1.1</version>
<exclusions>
<exclusion>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>javax.jms</groupId>
<artifactId>jms</artifactId>
<version>1.1</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.dbunit</groupId>
<artifactId>dbunit</artifactId>
<version>2.2</version>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.4</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.openqa.selenium.client-drivers</groupId>
<artifactId>selenium-java-client-driver</artifactId>
<version>${selenium-version}</version>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
</exclusion>
<exclusion>
<groupId>org.openqa.selenium.server</groupId>
<artifactId>selenium-server</artifactId>
</exclusion>
<exclusion>
<groupId>org.openqa.selenium.server</groupId>
<artifactId>selenium-server-coreless</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.openqa.selenium.server</groupId>
<artifactId>selenium-server</artifactId>
<version>${selenium-version}</version>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>
<version>1.5</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.4.3</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.4.3</version>
</dependency>
<!-- work around for jetty commons logging issue -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jcl104-over-slf4j</artifactId>
<version>1.4.3</version>
</dependency>
<!--
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.1.1</version>
</dependency>
-->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.14</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-io</artifactId>
<version>1.3.2</version>
</dependency>
<dependency>
<groupId>jscience</groupId>
<artifactId>jscience</artifactId>
<version>4.3.1</version>
</dependency>
<dependency>
<groupId>org.google</groupId>
<artifactId>google-collect</artifactId>
<!-- version represents Google's snapshot release date
(we don't want to use SNAPSHOT qualifier because there
isn't anything to qualify it to yet. -->
<version>0.20071022-BETA</version>
</dependency>
<!-- Hibernate optional dependency -->
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>2.1_3</version>
<scope>runtime</scope>
</dependency>
<!-- Used by JSP pages -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.1.2</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jsp-api</artifactId>
<version>2.0</version>
<scope>provided</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>99.0-does-not-exist</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging-api</artifactId>
<version>99.0-does-not-exist</version>
</dependency>
</dependencies>
</dependencyManagement>
<properties>
<l2>[2,)</l2>
<l1>[1,)</l1>
<selenium-version>0.9.2</selenium-version>
<basedir>/</basedir>
</properties>
<repositories>
<repository>
<id>no-commons-logging</id>
<name>No-commons-logging Maven Repository</name>
<layout>default</layout>
<url>http://no-commons-logging.zapto.org/mvn2</url>
</repository>
<repository>
<releases />
<id>local</id>
<name>local</name>
<url>file:///${basedir}/m2Repository</url>
</repository>
<repository>
<id>openqa-repository</id>
<name>OpenQA Repository</name>
<url>http://maven.openqa.org/</url>
</repository>
</repositories>
</project>
To output which looks like this:
Working path:C:\workspaces\mavenDepConvert\src\.
compile: "c3p0:c3p0:0.9.1.2"
compile: "com.fonterra.tams:msg-classes:1.0.0"
compile: "oracle.jdbc.driver:OracleDriver:10.2.0.3"
addDependency(['compile'], "org.apache.struts:struts-core:1.3.8" ) {
exclude(module: 'commons-logging' )
}
addDependency(['compile'], "org.apache.struts:struts-extras:1.3.8" ) {
exclude(module: 'commons-logging' )
}
addDependency(['compile'], "org.apache.struts:struts-taglib:1.3.8" ) {
exclude(module: 'commons-logging' )
}
addDependency(['compile'], "org.apache.ibatis:ibatis-sqlmap:2.3.0" ) {
exclude(module: 'commons-logging' )
}
addDependency(['compile'], "org.springframework:spring-web:2.5" ) {
exclude(module: 'commons-logging' )
}
addDependency(['compile'], "org.springframework:spring-beans:2.5" ) {
exclude(module: 'commons-logging' )
}
addDependency(['compile'], "org.springframework:spring-jdbc:2.5" ) {
exclude(module: 'commons-logging' )
}
addDependency(['compile'], "org.springframework:spring-orm:2.5" ) {
exclude(module: 'commons-logging' )
}
addDependency(['compile'], "org.hibernate:hibernate:3.2.5.ga" ) {
exclude(module: 'commons-logging' )
}
compile: "commons-lang:commons-lang:2.3"
compile: "javax.xml.bind:jaxb-api:2.1"
compile: "opensymphony:sitemesh:2.3"
addDependency(['compile'], "displaytag:displaytag:1.1" ) {
exclude(module: 'commons-logging' )
}
compile: "javax.jms:jms:1.1"
compile: "joda-time:joda-time:1.5"
compile: "org.slf4j:slf4j-api:1.4.3"
compile: "org.slf4j:slf4j-log4j12:1.4.3"
compile: "org.slf4j:jcl104-over-slf4j:1.4.3"
compile: "log4j:log4j:1.2.14"
compile: "org.apache.commons:commons-io:1.3.2"
compile: "jscience:jscience:4.3.1"
compile: "org.google:google-collect:0.20071022-BETA"
compile: "taglibs:standard:1.1.2"
runtime: "com.sun.xml.bind:jaxb-impl:2.0.3"
runtime: "cglib:cglib:2.1_3"
testCompile: "org.easymock:easymock:2.3"
testCompile: "org.easymock:easymockclassextension:2.2.2:jdk14"
addDependency(['testCompile'], "org.dbunit:dbunit:2.2" ) {
exclude(module: 'commons-logging' )
}
testCompile: "junit:junit:4.4"
addDependency(['testCompile'], "org.openqa.selenium.client-drivers:selenium-java-client-driver:${selenium-version}" ) {
exclude(module: 'commons-logging' )
exclude(module: 'selenium-server' )
exclude(module: 'selenium-server-coreless' )
}
addDependency(['testCompile'], "org.openqa.selenium.server:selenium-server:${selenium-version}" ) {
exclude(module: 'commons-logging' )
}
provided: "javax.servlet:jstl:1.1.2"
provided: "javax.servlet:servlet-api:2.5"
provided: "javax.servlet:jsp-api:2.0"
system: "com.ibm:WebSphere-Runtime:6.1.0.13"}}
Stubbisms - Tony's Weblog 
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