org.apache.maven.plugin.compiler
Class AbstractCompilerMojo

java.lang.Object
  org.apache.maven.plugin.AbstractMojo
      org.apache.maven.plugin.compiler.AbstractCompilerMojo

All Implemented Interfaces:

ContextEnabled, Mojo

Direct Known Subclasses:

AbstractCompilerMojo, CompilerMojo, TestCompilerMojo

public abstract class AbstractCompilerMojo
extends AbstractMojo

TODO: At least one step could be optimized, currently the plugin will do two scans of all the source code if the compiler has to have the entire set of sources. This is currently the case for at least the C# compiler and most likely all the other .NET compilers too.

Since:

2.0

Version:

$Id: AbstractCompilerMojo.java 1410034 2012-11-15 21:40:58Z olamy $

Author:

others, Trygve Laugstøl

Field Summary

protected String	compilerArgument Sets the unformatted single argument string to be passed to the compiler if fork is set to true.
protected Map<String,String>	compilerArguments Sets the arguments to be passed to the compiler (prepending a dash) if fork is set to true.
protected MavenSession	mavenSession We need this to determine the start timestamp of the build.
protected String	source The -source argument for the Java compiler.
protected String	target The -target argument for the Java compiler.

Fields inherited from interface org.apache.maven.plugin.Mojo

ROLE

Constructor Summary

AbstractCompilerMojo()

Method Summary

protected CompilerResult	convertToCompilerResult(List<CompilerError> compilerErrors)
void	execute()
protected Date	getBuildStartTime()
protected abstract List<String>	getClasspathElements()
protected abstract String	getCompilerArgument()
protected abstract Map<String,String>	getCompilerArguments()
protected abstract List<String>	getCompileSourceRoots()
protected abstract File	getGeneratedSourcesDirectory()
protected abstract File	getOutputDirectory()
protected int	getRequestThreadCount() try to get thread count if a Maven 3 build, using reflection as the plugin must not be maven3 api dependant
protected abstract String	getSource()
protected abstract SourceInclusionScanner	getSourceInclusionScanner(int staleMillis)
protected abstract SourceInclusionScanner	getSourceInclusionScanner(String inputFileEnding)
protected abstract String	getTarget()
protected boolean	isDependencyChanged() We just compare the timestamps of all local dependency files (inter-module dependency classpath) and the own generated classes and if we got a file which is >= the buid-started timestamp, then we catched a file which got changed during this build.

Methods inherited from class org.apache.maven.plugin.AbstractMojo

getLog, getPluginContext, setLog, setPluginContext

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

source

@Parameter(property="maven.compiler.source",
           defaultValue="1.5")
protected String source

The -source argument for the Java compiler.

target

@Parameter(property="maven.compiler.target",
           defaultValue="1.5")
protected String target

The -target argument for the Java compiler.

compilerArguments

@Parameter
protected Map<String,String> compilerArguments

Sets the arguments to be passed to the compiler (prepending a dash) if fork is set to true.

This is because the list of valid arguments passed to a Java compiler varies based on the compiler version.

To pass -Xmaxerrs 1000 -Xlint -Xlint:-path -Averbose=true you should include the following:

 <compilerArguments>
   <Xmaxerrs>1000</Xmaxerrs>
   <Xlint/>
   <Xlint:-path/>
   <Averbose>true</Averbose>
 </compilerArguments>
 

Since:

2.0.1

compilerArgument

@Parameter
protected String compilerArgument

Sets the unformatted single argument string to be passed to the compiler if fork is set to true. To pass multiple arguments such as -Xmaxerrs 1000 (which are actually two arguments) you have to use compilerArguments.

This is because the list of valid arguments passed to a Java compiler varies based on the compiler version.

mavenSession

@Component
protected MavenSession mavenSession

We need this to determine the start timestamp of the build.

Since:

2.6

Constructor Detail

AbstractCompilerMojo

public AbstractCompilerMojo()

Method Detail

getSourceInclusionScanner

protected abstract SourceInclusionScanner getSourceInclusionScanner(int staleMillis)

getSourceInclusionScanner

protected abstract SourceInclusionScanner getSourceInclusionScanner(String inputFileEnding)

getClasspathElements

protected abstract List<String> getClasspathElements()

getCompileSourceRoots

protected abstract List<String> getCompileSourceRoots()

getOutputDirectory

protected abstract File getOutputDirectory()

getSource

protected abstract String getSource()

getTarget

protected abstract String getTarget()

getCompilerArgument

protected abstract String getCompilerArgument()

getCompilerArguments

protected abstract Map<String,String> getCompilerArguments()

getGeneratedSourcesDirectory

protected abstract File getGeneratedSourcesDirectory()

execute

public void execute()
             throws MojoExecutionException,
                    CompilationFailureException

Throws:

MojoExecutionException

CompilationFailureException

convertToCompilerResult

protected CompilerResult convertToCompilerResult(List<CompilerError> compilerErrors)

getRequestThreadCount

protected int getRequestThreadCount()

try to get thread count if a Maven 3 build, using reflection as the plugin must not be maven3 api dependant

Returns:

number of thread for this build or 1 if not multi-thread build

getBuildStartTime

protected Date getBuildStartTime()

isDependencyChanged

protected boolean isDependencyChanged()

We just compare the timestamps of all local dependency files (inter-module dependency classpath) and the own generated classes and if we got a file which is >= the buid-started timestamp, then we catched a file which got changed during this build.

Returns:

true if at least one single dependency has changed.