org.apache.maven.plugin
Interface MavenPluginManager

All Known Implementing Classes:

DefaultMavenPluginManager

public interface MavenPluginManager

Provides basic services to manage Maven plugins and their mojos. This component is kept general in its design such that the plugins/mojos can be used in arbitrary contexts. In particular, the mojos can be used for ordinary build plugins as well as special purpose plugins like reports.

Since:

3.0

Author:

Benjamin Bentmann

Method Summary

void	checkRequiredMavenVersion(PluginDescriptor pluginDescriptor) Verifies the specified plugin is compatible with the current Maven runtime.
<T> T	getConfiguredMojo(Class<T> mojoInterface, MavenSession session, MojoExecution mojoExecution) Looks up the mojo for the specified mojo execution and populates its parameters from the configuration given by the mojo execution.
MojoDescriptor	getMojoDescriptor(Plugin plugin, String goal, List<RemoteRepository> repositories, RepositorySystemSession session) Retrieves the descriptor for the specified plugin goal from the plugin's main artifact.
PluginDescriptor	getPluginDescriptor(Plugin plugin, List<RemoteRepository> repositories, RepositorySystemSession session) Retrieves the descriptor for the specified plugin from its main artifact.
void	releaseMojo(Object mojo, MojoExecution mojoExecution) Releases the specified mojo back to the container.
void	setupPluginRealm(PluginDescriptor pluginDescriptor, MavenSession session, ClassLoader parent, List<String> imports, DependencyFilter filter) Sets up the class realm for the specified plugin.

Method Detail

getPluginDescriptor

PluginDescriptor getPluginDescriptor(Plugin plugin,
                                     List<RemoteRepository> repositories,
                                     RepositorySystemSession session)
                                     throws PluginResolutionException,
                                            PluginDescriptorParsingException,
                                            InvalidPluginDescriptorException

Retrieves the descriptor for the specified plugin from its main artifact.

Parameters:

plugin - The plugin whose descriptor should be retrieved, must not be null.

repositories - The plugin repositories to use for resolving the plugin's main artifact, must not be null.

session - The repository session to use for resolving the plugin's main artifact, must not be null.

Returns:

The plugin descriptor, never null.

Throws:

PluginResolutionException

PluginDescriptorParsingException

InvalidPluginDescriptorException

getMojoDescriptor

MojoDescriptor getMojoDescriptor(Plugin plugin,
                                 String goal,
                                 List<RemoteRepository> repositories,
                                 RepositorySystemSession session)
                                 throws MojoNotFoundException,
                                        PluginResolutionException,
                                        PluginDescriptorParsingException,
                                        InvalidPluginDescriptorException

Retrieves the descriptor for the specified plugin goal from the plugin's main artifact.

Parameters:

plugin - The plugin whose mojo descriptor should be retrieved, must not be null.

goal - The simple name of the mojo whose descriptor should be retrieved, must not be null.

repositories - The plugin repositories to use for resolving the plugin's main artifact, must not be null.

session - The repository session to use for resolving the plugin's main artifact, must not be null.

Returns:

The mojo descriptor, never null.

Throws:

MojoNotFoundException

PluginResolutionException

PluginDescriptorParsingException

InvalidPluginDescriptorException

checkRequiredMavenVersion

void checkRequiredMavenVersion(PluginDescriptor pluginDescriptor)
                               throws PluginIncompatibleException

Verifies the specified plugin is compatible with the current Maven runtime.

Parameters:

pluginDescriptor - The descriptor of the plugin to check, must not be null.

Throws:

PluginIncompatibleException

setupPluginRealm

void setupPluginRealm(PluginDescriptor pluginDescriptor,
                      MavenSession session,
                      ClassLoader parent,
                      List<String> imports,
                      DependencyFilter filter)
                      throws PluginResolutionException,
                             PluginContainerException

Sets up the class realm for the specified plugin. Both the class realm and the plugin artifacts that constitute it will be stored in the plugin descriptor.

Parameters:

pluginDescriptor - The plugin descriptor in which to save the class realm and the plugin artifacts, must not be null.

session - The build session from which to pick the current project and repository settings, must not be null.

parent - The parent class realm for the plugin, may be null to use the Maven core realm.

imports - The packages/types to import from the parent realm, may be null.

filter - The filter used to exclude certain plugin dependencies, may be null.

Throws:

PluginResolutionException

PluginContainerException

getConfiguredMojo

<T> T getConfiguredMojo(Class<T> mojoInterface,
                        MavenSession session,
                        MojoExecution mojoExecution)
                    throws PluginConfigurationException,
                           PluginContainerException

Looks up the mojo for the specified mojo execution and populates its parameters from the configuration given by the mojo execution. The mojo/plugin descriptor associated with the mojo execution provides the class realm to lookup the mojo from. Warning: The returned mojo instance must be released via releaseMojo(Object, MojoExecution) when the mojo is no longer needed to free any resources allocated for it.

Parameters:

mojoInterface - The component role of the mojo, must not be null.

session - The build session in whose context the mojo will be used, must not be null.

mojoExecution - The mojo execution to retrieve the mojo for, must not be null.

Returns:

The ready-to-execute mojo, never null.

Throws:

PluginConfigurationException

PluginContainerException

releaseMojo

void releaseMojo(Object mojo,
                 MojoExecution mojoExecution)

Releases the specified mojo back to the container.

Parameters:

mojo - The mojo to release, may be null.

mojoExecution - The mojo execution the mojo was originally retrieved for, must not be null.