GrailsPluginManager

All Known Implementing Classes:

AbstractGrailsPluginManager, DefaultGrailsPluginManager, MockGrailsPluginManager, ProfilingGrailsPluginManager
```
public interface GrailsPluginManager
```
Handles the loading and management of plug-ins in the Grails system. A plugin a just like a normal Grails application except that it contains a file ending in *Plugin.groovy in the root of the directory.
A Plugin class is a Groovy class that has a version and optionally closures called doWithSpring, doWithContext and doWithWebDescriptor
The doWithSpring closure uses the BeanBuilder syntax (@see grails.spring.BeanBuilder) to provide runtime configuration of Grails via Spring
The doWithContext closure is called after the Spring ApplicationContext is built and accepts a single argument (the ApplicationContext)
The doWithWebDescriptor uses mark-up building to provide additional functionality to the web.xml file
Example:
```
 class ClassEditorGrailsPlugin {
      def version = 1.1
      def doWithSpring = { application ->
          classEditor(org.springframework.beans.propertyeditors.ClassEditor, application.classLoader)
      }
 }
 
```
A plugin can also define "dependsOn" and "evict" properties that specify what plugins the plugin depends on and which ones it is incompatable with and should evict
Since:

0.4

Author:

Graeme Rocher

Field Summary

Fields
Modifier and Type Field and Description

static java.lang.String BEAN_NAME

Fields
Modifier and Type	Field and Description
`static java.lang.String`	`BEAN_NAME`

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`void`	`checkForChanges()` Checks all the plugins to see whether they have any changes
`void`	`doArtefactConfiguration()` Called prior to the initialisation of the GrailsApplication object to allow registration of additional ArtefactHandler objects
`void`	`doDynamicMethods()` Called on all plugins so that they can add new methods/properties/constructors etc.
`void`	`doPostProcessing(ApplicationContext applicationContext)` Performs post initialization configuration for each plug-in, passing the built application context
`void`	`doRuntimeConfiguration(RuntimeSpringConfiguration springConfig)` Executes the runtime configuration phase of plug-ins
`void`	`doRuntimeConfiguration(java.lang.String pluginName, RuntimeSpringConfiguration springConfig)` Executes the runtime configuration for a specific plugin AND all its dependencies
`void`	`doWebDescriptor(Resource descriptor, java.io.Writer target)` Takes the specified web descriptor reference and configures it with all the plugins outputting the result to the target Writer instance
`GrailsPlugin[]`	`getAllPlugins()` Returns an array of all the loaded plug-ins
`GrailsPlugin[]`	`getFailedLoadPlugins()`
`GrailsPlugin`	`getFailedPlugin(java.lang.String name)` Retrieves a plug-in that failed to load, or null if it doesn't exist
`GrailsPlugin`	`getGrailsPlugin(java.lang.String name)` Retrieves a name Grails plugin instance
`GrailsPlugin`	`getGrailsPlugin(java.lang.String name, java.lang.Object version)` Retrieves a plug-in for its name and version
`GrailsPlugin`	`getGrailsPluginForClassName(java.lang.String name)` Obtains a GrailsPlugin for the given classname
`GrailsPlugin`	`getPluginForClass(java.lang.Class<?> theClass)` Obtains the GrailsPlugin for the given class
`GrailsPlugin`	`getPluginForInstance(java.lang.Object instance)` Looks up the plugin that defined the given instance.
`java.util.Collection`	`getPluginObservers(GrailsPlugin plugin)` Retrieves a collection of plugins that are observing the specified plugin
`java.lang.String`	`getPluginPath(java.lang.String name)` Returns the pluginContextPath for the given plugin
`java.lang.String`	`getPluginPathForClass(java.lang.Class<? extends java.lang.Object> theClass)` Returns the plugin path for the given class
`java.lang.String`	`getPluginPathForInstance(java.lang.Object instance)` Returns the pluginContextPath for the given instance
`java.lang.String`	`getPluginViewsPathForClass(java.lang.Class<? extends java.lang.Object> theClass)` Returns the plugin views directory path for the given class
`java.lang.String`	`getPluginViewsPathForInstance(java.lang.Object instance)` Returns the plugin views directory for the given instance
`java.util.List<TypeFilter>`	`getTypeFilters()` Get all of the TypeFilter definitions defined by the plugins
`GrailsPlugin[]`	`getUserPlugins()` Gets plugin installed by the user and not provided by the framework
`boolean`	`hasGrailsPlugin(java.lang.String name)`
`void`	`informObservers(java.lang.String pluginName, java.util.Map event)` inform the specified plugins observers of the event specified by the passed Map instance
`void`	`informOfClassChange(java.lang.Class<?> aClass)` Method for handling changes to a class and triggering on change events etc.
`void`	`informOfClassChange(java.io.File file, java.lang.Class cls)`
`void`	`informOfFileChange(java.io.File file)` Fire to inform the PluginManager that a particular file changes
`boolean`	`isInitialised()`
`void`	`loadPlugins()` Performs the initial load of plug-ins throwing an exception if any dependencies don't resolve
`void`	`refreshPlugin(java.lang.String name)` Refreshes the specified plugin.
`void`	`registerProvidedArtefacts(GrailsApplication application)` Registers pre-compiled artefacts with the GrailsApplication instance, only overriding if the application doesn't already provide an artefact of the same name.
`void`	`setApplication(GrailsApplication application)` Sets the GrailsApplication used be this plugin manager
`void`	`setLoadCorePlugins(boolean shouldLoadCorePlugins)` Set whether the core plugins should be loaded
`void`	`shutdown()` Shuts down the PluginManager
`boolean`	`supportsCurrentBuildScope(java.lang.String pluginName)` Returns true if the given plugin supports the current BuildScope

- Field Detail
  - BEAN_NAME
```
static final java.lang.String BEAN_NAME
```
    See Also:
    
    Constant Field Values
- Method Detail
  - getAllPlugins
```
GrailsPlugin[] getAllPlugins()
```
    Returns an array of all the loaded plug-ins
    
    Returns:
    
    An array of plug-ins
  - getUserPlugins
```
GrailsPlugin[] getUserPlugins()
```
    Gets plugin installed by the user and not provided by the framework
    
    Returns:
    
    A list of user plugins
  - getFailedLoadPlugins
```
GrailsPlugin[] getFailedLoadPlugins()
```
    Returns:
    
    An array of plugins that failed to load due to dependency resolution errors
  - loadPlugins
```
void loadPlugins()
          throws PluginException
```
    Performs the initial load of plug-ins throwing an exception if any dependencies don't resolve
    
    Throws:
    
    PluginException - Thrown when an error occurs loading the plugins
  - doRuntimeConfiguration
```
void doRuntimeConfiguration(RuntimeSpringConfiguration springConfig)
```
    Executes the runtime configuration phase of plug-ins
    
    Parameters:
    
    springConfig - The RuntimeSpringConfiguration instance
  - doPostProcessing
```
void doPostProcessing(ApplicationContext applicationContext)
```
    Performs post initialization configuration for each plug-in, passing the built application context
    
    Parameters:
    
    applicationContext - The ApplicationContext instance
  - doWebDescriptor
```
void doWebDescriptor(Resource descriptor,
                     java.io.Writer target)
```
    Takes the specified web descriptor reference and configures it with all the plugins outputting the result to the target Writer instance
    
    Parameters:
    
    descriptor - The Resource of the descriptor
    
    target - The Writer to write the result to
  - doDynamicMethods
```
void doDynamicMethods()
```
    Called on all plugins so that they can add new methods/properties/constructors etc.
  - getGrailsPlugin
```
GrailsPlugin getGrailsPlugin(java.lang.String name)
```
    Retrieves a name Grails plugin instance
    
    Parameters:
    
    name - The name of the plugin
    
    Returns:
    
    The GrailsPlugin instance or null if it doesn't exist
  - getGrailsPluginForClassName
```
GrailsPlugin getGrailsPluginForClassName(java.lang.String name)
```
    Obtains a GrailsPlugin for the given classname
    
    Parameters:
    
    name - The name of the plugin
    
    Returns:
    
    The instance
  - hasGrailsPlugin
```
boolean hasGrailsPlugin(java.lang.String name)
```
    Parameters:
    
    name - The name of the plugin
    
    Returns:
    
    True if the the manager has a loaded plugin with the given name
  - getFailedPlugin
```
GrailsPlugin getFailedPlugin(java.lang.String name)
```
    Retrieves a plug-in that failed to load, or null if it doesn't exist
    
    Parameters:
    
    name - The name of the plugin
    
    Returns:
    
    A GrailsPlugin or null
  - getGrailsPlugin
```
GrailsPlugin getGrailsPlugin(java.lang.String name,
                             java.lang.Object version)
```
    Retrieves a plug-in for its name and version
    
    Parameters:
    
    name - The name of the plugin
    
    version - The version of the plugin
    
    Returns:
    
    The GrailsPlugin instance or null if it doesn't exist
  - doRuntimeConfiguration
```
void doRuntimeConfiguration(java.lang.String pluginName,
                            RuntimeSpringConfiguration springConfig)
```
    Executes the runtime configuration for a specific plugin AND all its dependencies
    
    Parameters:
    
    pluginName - The name of he plugin
    
    springConfig - The runtime spring config instance
  - checkForChanges
```
void checkForChanges()
```
    Checks all the plugins to see whether they have any changes
  - setApplication
```
void setApplication(GrailsApplication application)
```
    Sets the GrailsApplication used be this plugin manager
    
    Parameters:
    
    application - The GrailsApplication instance
  - isInitialised
```
boolean isInitialised()
```
    Returns:
    
    the initialised
  - refreshPlugin
```
void refreshPlugin(java.lang.String name)
```
    Refreshes the specified plugin. A refresh will force to plugin to "touch" each of its watched resources and fire modified events for each
    
    Parameters:
    
    name - The name of the plugin to refresh
  - getPluginObservers
```
java.util.Collection getPluginObservers(GrailsPlugin plugin)
```
    Retrieves a collection of plugins that are observing the specified plugin
    
    Parameters:
    
    plugin - The plugin to retrieve observers for
    
    Returns:
    
    A collection of observers
  - informObservers
```
void informObservers(java.lang.String pluginName,
                     java.util.Map event)
```
    inform the specified plugins observers of the event specified by the passed Map instance
    
    Parameters:
    
    pluginName - The name of the plugin
    
    event - The event
  - doArtefactConfiguration
```
void doArtefactConfiguration()
```
    Called prior to the initialisation of the GrailsApplication object to allow registration of additional ArtefactHandler objects
    
    See Also:
    
    ArtefactHandler
  - registerProvidedArtefacts
```
void registerProvidedArtefacts(GrailsApplication application)
```
    Registers pre-compiled artefacts with the GrailsApplication instance, only overriding if the application doesn't already provide an artefact of the same name.
    
    Parameters:
    
    application - The GrailsApplication object
  - shutdown
```
void shutdown()
```
    Shuts down the PluginManager
  - supportsCurrentBuildScope
```
boolean supportsCurrentBuildScope(java.lang.String pluginName)
```
    Returns true if the given plugin supports the current BuildScope
    
    Parameters:
    
    pluginName - The name of the plugin
    
    Returns:
    
    True if the plugin supports the current build scope
    
    See Also:
    
    grails.util.BuildScope#getCurrent()
  - setLoadCorePlugins
```
void setLoadCorePlugins(boolean shouldLoadCorePlugins)
```
    Set whether the core plugins should be loaded
    
    Parameters:
    
    shouldLoadCorePlugins - True if they should
  - informOfClassChange
```
void informOfClassChange(java.lang.Class<?> aClass)
```
    Method for handling changes to a class and triggering on change events etc.
    
    Parameters:
    
    aClass - The class
  - getTypeFilters
```
java.util.List<TypeFilter> getTypeFilters()
```
    Get all of the TypeFilter definitions defined by the plugins
    
    Returns:
    
    A list of TypeFilter definitions
  - getPluginPath
```
java.lang.String getPluginPath(java.lang.String name)
```
    Returns the pluginContextPath for the given plugin
    
    Parameters:
    
    name - The plugin name
    
    Returns:
    
    the context path
  - getPluginForInstance
```
GrailsPlugin getPluginForInstance(java.lang.Object instance)
```
    Looks up the plugin that defined the given instance. If no plugin defined the instance then null is returned.
    
    Parameters:
    
    instance - The instance
    
    Returns:
    
    The plugin that defined the instance or null
  - getPluginPathForInstance
```
java.lang.String getPluginPathForInstance(java.lang.Object instance)
```
    Returns the pluginContextPath for the given instance
    
    Parameters:
    
    instance - The instance
    
    Returns:
    
    The pluginContextPath
  - getPluginPathForClass
```
java.lang.String getPluginPathForClass(java.lang.Class<? extends java.lang.Object> theClass)
```
    Returns the plugin path for the given class
    
    Parameters:
    
    theClass - The class
    
    Returns:
    
    The pluginContextPath
  - getPluginViewsPathForInstance
```
java.lang.String getPluginViewsPathForInstance(java.lang.Object instance)
```
    Returns the plugin views directory for the given instance
    
    Parameters:
    
    instance - The instance
    
    Returns:
    
    The pluginContextPath
  - getPluginViewsPathForClass
```
java.lang.String getPluginViewsPathForClass(java.lang.Class<? extends java.lang.Object> theClass)
```
    Returns the plugin views directory path for the given class
    
    Parameters:
    
    theClass - The class
    
    Returns:
    
    The pluginContextPath
  - getPluginForClass
```
GrailsPlugin getPluginForClass(java.lang.Class<?> theClass)
```
    Obtains the GrailsPlugin for the given class
    
    Parameters:
    
    theClass - The class
    
    Returns:
    
    The GrailsPlugin for the given class or null if not related to any plugin
  - informOfFileChange
```
void informOfFileChange(java.io.File file)
```
    Fire to inform the PluginManager that a particular file changes
    
    Parameters:
    
    file - The file that changed
    
    Since:
    
    2.0
  - informOfClassChange
```
void informOfClassChange(java.io.File file,
                         java.lang.Class cls)
```

Interface GrailsPluginManager

Field Summary

Method Summary

Field Detail

BEAN_NAME

Method Detail

getAllPlugins

getUserPlugins

getFailedLoadPlugins

loadPlugins

doRuntimeConfiguration

doPostProcessing

doWebDescriptor

doDynamicMethods

getGrailsPlugin

getGrailsPluginForClassName

hasGrailsPlugin

getFailedPlugin

getGrailsPlugin

doRuntimeConfiguration

checkForChanges

setApplication

isInitialised

refreshPlugin

getPluginObservers

informObservers

doArtefactConfiguration

registerProvidedArtefacts

shutdown

supportsCurrentBuildScope

setLoadCorePlugins

informOfClassChange

getTypeFilters

getPluginPath

getPluginForInstance

getPluginPathForInstance

getPluginPathForClass

getPluginViewsPathForInstance

getPluginViewsPathForClass

getPluginForClass

informOfFileChange

informOfClassChange