org.codehaus.mojo.jaxb2

Class AbstractJaxbMojo

java.lang.Object

org.apache.maven.plugin.AbstractMojo

org.codehaus.mojo.jaxb2.AbstractJaxbMojo

All Implemented Interfaces:

org.apache.maven.plugin.ContextEnabled, org.apache.maven.plugin.Mojo

Direct Known Subclasses:

AbstractJavaGeneratorMojo, AbstractXsdGeneratorMojo

public abstract class AbstractJaxbMojo
extends org.apache.maven.plugin.AbstractMojo

Abstract Mojo which collects common infrastructure, required and needed by all subclass Mojos in the JAXB2 maven plugin codebase.

Author:

Lennart Jörelid

Field Summary

Fields

Modifier and Type	Field and Description
static Pattern	CONTAINS_WHITESPACE Pattern matching strings containing whitespace (or consisting only of whitespace).
static String	NEWLINE Platform-independent newline control string.
protected File	staleFileDirectory The directory where the staleFile is found.
static String	STANDARD_EPISODE_FILENAME Standard name of the generated JAXB episode file.
static List<Filter<File>>	STANDARD_EXCLUDE_FILTERS Standard excludes Filters for all Java generator Mojos.

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

ROLE

Constructor Summary

Constructors

Constructor and Description
AbstractJaxbMojo()

Method Summary

Methods

Modifier and Type	Method and Description
void	execute()
protected org.sonatype.plexus.build.incremental.BuildContext	getBuildContext() The Plexus BuildContext is used to identify files or directories modified since last build, implying functionality used to define if java generation must be performed again.
protected abstract List<String>	getClasspath() Retrieves the configured List of paths from which this AbstractJaxbMojo and its internal toolset (XJC or SchemaGen) should read bytecode classes.
protected String	getEncoding(boolean warnIfConfiguredEncodingDiffersFromFileEncoding) The algorithm for finding the encoding to use is as follows (where the first non-null value found is used for encoding):
protected File	getEpisodeFile(String customEpisodeFileName) Retrieves the JAXB episode File, and ensures that the parent directory where it exists is created.
org.apache.maven.plugin.MojoExecution	getExecution()
protected abstract File	getOutputDirectory() Retrieves the directory where the generated files should be written to.
protected org.apache.maven.project.MavenProject	getProject()
protected abstract List<URL>	getSources() Override this method to acquire a List holding all URLs to the sources which this AbstractJaxbMojo should use to produce its output (XSDs files for AbstractXsdGeneratorMojos and Java Source Code for AbstractJavaGeneratorMojos).
protected File	getStaleFile() Acquires the staleFile for this execution
protected abstract String	getStaleFileName() Retrieves the last name part of the stale file.
protected abstract boolean	isReGenerationRequired()
protected String[]	logAndReturnToolArguments(String[] arguments, String toolName)
protected void	logSystemPropertiesAndBasedir() Prints out the system properties to the Maven Log at Debug level.
protected abstract boolean	performExecution() Implement this method to perform this Mojo's execution.
protected abstract boolean	shouldExecutionBeSkipped() Implement this method to check if this AbstractJaxbMojo should skip executing altogether.
protected void	warnAboutIncorrectPluginConfiguration(String propertyName, String description) Convenience method to invoke when some plugin configuration is incorrect.

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

STANDARD_EPISODE_FILENAME

public static final String STANDARD_EPISODE_FILENAME

Standard name of the generated JAXB episode file.

See Also:

Constant Field Values

NEWLINE

public static final String NEWLINE

Platform-independent newline control string.

CONTAINS_WHITESPACE

public static final Pattern CONTAINS_WHITESPACE

Pattern matching strings containing whitespace (or consisting only of whitespace).

STANDARD_EXCLUDE_FILTERS

public static final List<Filter<File>> STANDARD_EXCLUDE_FILTERS

Standard excludes Filters for all Java generator Mojos. The List is unmodifiable.

staleFileDirectory

@Parameter(defaultValue="${project.build.directory}/jaxb2",
           readonly=true,
           required=true)
protected File staleFileDirectory

The directory where the staleFile is found. The staleFile assists in determining if re-generation of JAXB build products is required.

While it is permitted to re-define the staleFileDirectory, it is recommended to keep it below the ${project.build.directory}, to ensure that JAXB code or XSD re-generation occurs after cleaning the project.

Since:

2.0

Constructor Detail

AbstractJaxbMojo

public AbstractJaxbMojo()

Method Detail

getBuildContext

protected final org.sonatype.plexus.build.incremental.BuildContext getBuildContext()

The Plexus BuildContext is used to identify files or directories modified since last build, implying functionality used to define if java generation must be performed again.

Returns:

the active Plexus BuildContext.

getProject

protected final org.apache.maven.project.MavenProject getProject()

Returns:

The active MavenProject.

getExecution

public org.apache.maven.plugin.MojoExecution getExecution()

Returns:

The active MojoExecution.

execute

public final void execute()
                   throws org.apache.maven.plugin.MojoExecutionException,
                          org.apache.maven.plugin.MojoFailureException

Throws:

org.apache.maven.plugin.MojoExecutionException

org.apache.maven.plugin.MojoFailureException

shouldExecutionBeSkipped

protected abstract boolean shouldExecutionBeSkipped()

Implement this method to check if this AbstractJaxbMojo should skip executing altogether.

Returns:

true to indicate that this AbstractJaxbMojo should bail out of its execute method.

isReGenerationRequired

protected abstract boolean isReGenerationRequired()

Returns:

true to indicate that this AbstractJaxbMojo should be run since its generated files were either stale or not present, and false otherwise.

performExecution

protected abstract boolean performExecution()
                                     throws org.apache.maven.plugin.MojoExecutionException,
                                            org.apache.maven.plugin.MojoFailureException

Implement this method to perform this Mojo's execution. This method will only be called if !shouldExecutionBeSkipped() && isReGenerationRequired().

Returns:

true if the timestamp of the stale file should be updated.

Throws:

org.apache.maven.plugin.MojoExecutionException - if an unexpected problem occurs. Throwing this exception causes a "BUILD ERROR" message to be displayed.

org.apache.maven.plugin.MojoFailureException - if an expected problem (such as a compilation failure) occurs. Throwing this exception causes a "BUILD FAILURE" message to be displayed.

getSources

protected abstract List<URL> getSources()

Override this method to acquire a List holding all URLs to the sources which this AbstractJaxbMojo should use to produce its output (XSDs files for AbstractXsdGeneratorMojos and Java Source Code for AbstractJavaGeneratorMojos).

Returns:

A non-null List holding URLs to sources used by this AbstractJaxbMojo to produce its output.

getOutputDirectory

protected abstract File getOutputDirectory()

Retrieves the directory where the generated files should be written to.

Returns:

the directory where the generated files should be written to.

getClasspath

protected abstract List<String> getClasspath()
                                      throws org.apache.maven.plugin.MojoExecutionException

Retrieves the configured List of paths from which this AbstractJaxbMojo and its internal toolset (XJC or SchemaGen) should read bytecode classes.

Returns:

the configured List of paths from which this AbstractJaxbMojo and its internal toolset (XJC or SchemaGen) should read classes.

Throws:

org.apache.maven.plugin.MojoExecutionException - if the classpath could not be retrieved.

warnAboutIncorrectPluginConfiguration

protected void warnAboutIncorrectPluginConfiguration(String propertyName,
                                         String description)

Convenience method to invoke when some plugin configuration is incorrect. Will output the problem as a warning with some degree of log formatting.

Parameters:

propertyName - The name of the problematic property.

description - The problem description.

logAndReturnToolArguments

protected final String[] logAndReturnToolArguments(String[] arguments,
                                 String toolName)

Parameters:

arguments - The final arguments to be passed to a JAXB tool (XJC or SchemaGen).

toolName - The name of the tool.

Returns:

the arguments, untouched.

getStaleFileName

protected abstract String getStaleFileName()

Retrieves the last name part of the stale file. The full name of the stale file will be generated by pre-pending "." + getExecution().getExecutionId() before this staleFileName.

Returns:

The name of the stale file used by this AbstractJavaGeneratorMojo to detect staleness amongst its generated files.

getStaleFile

protected final File getStaleFile()

Acquires the staleFile for this execution

Returns:

the staleFile (used to define where) for this execution

getEncoding

protected final String getEncoding(boolean warnIfConfiguredEncodingDiffersFromFileEncoding)

The algorithm for finding the encoding to use is as follows (where the first non-null value found is used for encoding):

1. If the configuration property is explicitly given within the plugin's configuration, use that value.
2. If the Maven property project.build.sourceEncoding is defined, use its value.
3. Otherwise use the value from the system property file.encoding.

Parameters:

warnIfConfiguredEncodingDiffersFromFileEncoding - Defines if the configured encoding is not equal to the system property file.encoding, emit a warning on the Maven Log (implies that the Maven log has to be warnEnabled).

Returns:

The encoding to be used by this AbstractJaxbMojo and its tools.

See Also:

encoding

getEpisodeFile

protected File getEpisodeFile(String customEpisodeFileName)
                       throws org.apache.maven.plugin.MojoExecutionException

Retrieves the JAXB episode File, and ensures that the parent directory where it exists is created.

Parameters:

customEpisodeFileName - null to indicate that the standard episode file name ("sun-jaxb.episode") should be used, and otherwise a non-empty name which should be used as the episode file name.

Returns:

A non-null File where the JAXB episode file should be written.

Throws:

org.apache.maven.plugin.MojoExecutionException - if the parent directory of the episode file could not be created.

logSystemPropertiesAndBasedir

protected void logSystemPropertiesAndBasedir()

Prints out the system properties to the Maven Log at Debug level.