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## org.codehaus.groovy.grails.commons
Class DefaultGrailsApplication

    java.lang.Object
      groovy.lang.GroovyObjectSupport
          org.codehaus.groovy.grails.commons.DefaultGrailsApplication

All Implemented Interfaces:
  groovy.lang.GroovyObject, GrailsApplication, BeanClassLoaderAware, ApplicationContextAware

    public class DefaultGrailsApplication

extends groovy.lang.GroovyObjectSupport
implements GrailsApplication, BeanClassLoaderAware

Default implementation of the GrailsApplication interface that manages application loading, state, and artefact instances.

Upon loading this GrailsApplication will inspect each class using its registered ArtefactHandler instances. Each ArtefactHandler provides knowledge about the conventions used to establish its artefact type. For example controllers use the ControllerArtefactHandler to establish this knowledge.

New ArtefactHandler instances can be registered with the GrailsApplication thus allowing application extensibility.

Since:
  0.1

  Created: Jul 2, 2005
Author:
  Marc Palmer, Steven Devijver, Graeme Rocher
See Also:
  `GrailsPluginManager`, `DefaultGrailsPluginManager`, `ArtefactHandler`, `ArtefactInfo`

Field Summary

Fields inherited from interface org.codehaus.groovy.grails.commons.GrailsApplication
`APPLICATION_ID, CONFIG_CLASS, DATA_SOURCE_CLASS, ENV_APPLICATION, ENV_DEVELOPMENT, ENV_PRODUCTION, ENV_TEST, ENVIRONMENT, ENVIRONMENT_DEFAULT, GLOBAL_PLUGINS_DIR, PLUGINS_DIR, PROJECT_CLASSES_DIR, PROJECT_META_FILE, PROJECT_RESOURCES_DIR, PROJECT_TEST_CLASSES_DIR, PROJECT_WORK_DIR, WORK_DIR`

Constructor Summary
`DefaultGrailsApplication()` Creates a new empty Grails application
`DefaultGrailsApplication(Class[] classes, ClassLoader classLoader)` Creates a new GrailsApplication instance using the given classes and GroovyClassLoader
`DefaultGrailsApplication(GrailsResourceLoader resourceLoader)`
`DefaultGrailsApplication(Resource[] resources)` Constructs a GrailsApplication with the given set of groovy sources specified as Spring Resource instances

Method Summary
`void` | `addArtefact(Class artefact)` Adds the given artefact, attempting to determine type from
`GrailsClass` | `addArtefact(String artefactType, Class artefactClass)` Adds an artefact of the given type for the given Class.
`GrailsClass` | `addArtefact(String artefactType, GrailsClass artefactGrailsClass)` Adds an artefact of the given type for the given GrailsClass.
`void` | `addOverridableArtefact(Class artefact)` Adds an artefact that can be overriden by user defined classes
`GrailsClass` | `addOverridableArtefact(String artefactType, Class artefactClass)` Adds an artefact of the given type for the given Class.
`void` | `configChanged()` Fired to inform the application when the Config.groovy file changes
`Class[]` | `getAllArtefacts()` Returns all the classes identified as artefacts by ArtefactHandler instances
`Class[]` | `getAllClasses()` Retrieves all classes loaded by the GrailsApplication
`GrailsClass` | `getArtefact(String artefactType, String name)` Retrieves an artefact for the given type and nam
`GrailsClass` | `getArtefactByLogicalPropertyName(String type, String logicalName)` Retrieves an artefact by its logical property name.
`GrailsClass` | `getArtefactForFeature(String artefactType, Object featureID)` Get an artefact GrailsClass by a "feature" which depending on the artefact may be a URI or tag name for example
`ArtefactHandler` | `getArtefactHandler(String type)` Returns the ArtefactHandler for the given type
`ArtefactHandler[]` | `getArtefactHandlers()` Obtain a list of all the artefact handlers
`ArtefactInfo` | `getArtefactInfo(String artefactType)` Get the cache of classes for the specified artefact type
`GrailsClass[]` | `getArtefacts(String artefactType)` Returns all of the GrailsClass instances for the given artefactType as defined by the ArtefactHandler
`ArtefactHandler` | `getArtefactType(Class theClass)` Returns the ArtefactHandler for the given class or null
`Class` | `getClassForName(String className)` Retrieves a class from the GrailsApplication for the given name
`ClassLoader` | `getClassLoader()` Returns the class loader instance for the Grails application
`groovy.util.ConfigObject` | `getConfig()` Returns the ConfigObject instance
`Map` | `getFlatConfig()` Returns the flatten ConfigObject for use from Java classes
`ApplicationContext` | `getMainContext()` Returns the Spring context for this application.
`Map` | `getMetadata()` Get access to the project's metadata, specified in application.properties This provides access to information like required grails version, application name, version etc but NOT general application settings.
`ApplicationContext` | `getParentContext()` Retrieves the parent ApplicationContext for this GrailsApplication
`Object` | `getProperty(String propertyName)` Override property access and hit on xxxxClasses to return class arrays of artefacts
`Resource` | `getResourceForClass(Class theClazz)` Retrieves the Spring Resource that was used to load the given Class
`GrailsResourceLoader` | `getResourceLoader()`
`boolean` | `hasArtefactHandler(String type)` Test whether an artefact handler exists for a given type
`void` | `initialise()` Initialise this GrailsApplication
`Object` | `invokeMethod(String methodName, Object args)` Overrides method invocation to return dynamic artefact methods We will support getXXXXClasses() and isXXXXClass(class)
`boolean` | `isArtefact(Class theClazz)` Returns true if the given class is an artefact identified by one of the registered ArtefactHandler instances.
`boolean` | `isArtefactOfType(String artefactType, Class theClazz)` Returns true if the specified class is of the given artefact type as defined by the ArtefactHandler
`boolean` | `isArtefactOfType(String artefactType, String className)` Returns true if the specified class name is of the given artefact type as defined by the ArtefactHandler
`boolean` | `isInitialised()` Returns whether this GrailsApplication has been initialised or not
`boolean` | `isWarDeployed()` Returns true if this application has been deployed as a WAR file
`void` | `rebuild()` Rebuilds this Application throwing away the class loader and re-constructing it from the loaded resources again.
`void` | `refresh()` Refreshes this GrailsApplication, rebuilding all of the artefact definitions as defined by the registered ArtefactHandler instances
`void` | `refreshConstraints()` Refreshes constraints defined by the DomainClassArtefactHandler
`void` | `registerArtefactHandler(ArtefactHandler handler)` Registers a new ArtefactHandler that is responsible for identifying and managing an particular artefact type that is defined by some convention
`void` | `setApplicationContext(ApplicationContext applicationContext)` Sets the parent ApplicationContext for the GrailsApplication
`void` | `setBeanClassLoader(ClassLoader classLoader)`
`void` | `setMainContext(ApplicationContext context)` Sets the main Spring context for this application.

Methods inherited from class groovy.lang.GroovyObjectSupport
`getMetaClass, setMetaClass, setProperty`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### DefaultGrailsApplication

    public DefaultGrailsApplication()

  Creates a new empty Grails application

### DefaultGrailsApplication

    public DefaultGrailsApplication(Class[] classes,
                                    ClassLoader classLoader)

  Creates a new GrailsApplication instance using the given classes and GroovyClassLoader

  Parameters:
    `classes` - The classes that make up the GrailsApplication
    `classLoader` - The GroovyClassLoader to use

### DefaultGrailsApplication

    public DefaultGrailsApplication(Resource[] resources)
                             throws IOException

  Constructs a GrailsApplication with the given set of groovy sources specified as Spring Resource instances

  Parameters:
    `resources` - An array or Groovy sources provides by Spring Resource instances
  Throws:
    `IOException` - Thrown when an error occurs reading a Groovy source

### DefaultGrailsApplication

    public DefaultGrailsApplication(GrailsResourceLoader resourceLoader)

Method Detail

### getAllArtefacts

    public Class[] getAllArtefacts()

  Returns all the classes identified as artefacts by ArtefactHandler instances

  Specified by:
    `getAllArtefacts` in interface `GrailsApplication`
  Returns:
    An array of classes

### getResourceLoader

    public GrailsResourceLoader getResourceLoader()

### getClassLoader

    public ClassLoader getClassLoader()

  Description copied from interface: `GrailsApplication`

  Returns the class loader instance for the Grails application

  Specified by:
    `getClassLoader` in interface `GrailsApplication`
  Returns:
    The ClassLoader instance

### getConfig

    public groovy.util.ConfigObject getConfig()

  Description copied from interface: `GrailsApplication`
  Returns the ConfigObject instance

  Specified by:
    `getConfig` in interface `GrailsApplication`
  Returns:
    The ConfigObject instance

### getFlatConfig

    public Map getFlatConfig()

  Description copied from interface: `GrailsApplication`
  Returns the flatten ConfigObject for use from Java classes

  Specified by:
    `getFlatConfig` in interface `GrailsApplication`
  Returns:
    The flattened config

### getAllClasses

    public Class[] getAllClasses()

  Retrieves all classes loaded by the GrailsApplication

  Specified by:
    `getAllClasses` in interface `GrailsApplication`
  Returns:
    All classes loaded by the GrailsApplication

### getMainContext

    public ApplicationContext getMainContext()

  Description copied from interface: `GrailsApplication`
  Returns the Spring context for this application. Note that this will return `null` until the application is fully initialised. This context contains all the application artifacts, plugin beans, the works.

  Specified by:
    `getMainContext` in interface `GrailsApplication`

### setMainContext

    public void setMainContext(ApplicationContext context)

  Description copied from interface: `GrailsApplication`
  Sets the main Spring context for this application.

  Specified by:
    `setMainContext` in interface `GrailsApplication`

### setApplicationContext

    public void setApplicationContext(ApplicationContext applicationContext)
                               throws BeansException

  Sets the parent ApplicationContext for the GrailsApplication

  Specified by:
    `setApplicationContext` in interface `ApplicationContextAware`
  Parameters:
    `applicationContext` - The ApplicationContext
  Throws:
    `BeansException` - Thrown when an error occurs setting the ApplicationContext

### getParentContext

    public ApplicationContext getParentContext()

  Retrieves the parent ApplicationContext for this GrailsApplication

  Specified by:
    `getParentContext` in interface `GrailsApplication`
  Returns:
    The parent ApplicationContext

### getClassForName

    public Class getClassForName(String className)

  Retrieves a class from the GrailsApplication for the given name

  Specified by:
    `getClassForName` in interface `GrailsApplication`
  Parameters:
    `className` - The class name
  Returns:
    Either the java.lang.Class instance or null if it doesn't exist

### refreshConstraints

    public void refreshConstraints()

  Refreshes constraints defined by the DomainClassArtefactHandler

  Specified by:
    `refreshConstraints` in interface `GrailsApplication`
  To do:
    Move this out of GrailsApplication

### refresh

    public void refresh()

  Refreshes this GrailsApplication, rebuilding all of the artefact definitions as defined by the registered ArtefactHandler instances

  Specified by:
    `refresh` in interface `GrailsApplication`

### rebuild

    public void rebuild()

  Description copied from interface: `GrailsApplication`
  Rebuilds this Application throwing away the class loader and re-constructing it from the loaded resources again. This method can only be called in development mode and an error will be thrown if called in a different enivronment

  Specified by:
    `rebuild` in interface `GrailsApplication`

### getResourceForClass

    public Resource getResourceForClass(Class theClazz)

  Retrieves the Spring Resource that was used to load the given Class

  Specified by:
    `getResourceForClass` in interface `GrailsApplication`
  Parameters:
    `theClazz` - The class
  Returns:
    Either a Spring Resource or null if no Resource was found for the given class

### isArtefact

    public boolean isArtefact(Class theClazz)

  Returns true if the given class is an artefact identified by one of the registered ArtefactHandler instances. Uses class name equality to handle class reloading

  Specified by:
    `isArtefact` in interface `GrailsApplication`
  Parameters:
    `theClazz` - The class to check
  Returns:
    True if it is an artefact

### isArtefactOfType

    public boolean isArtefactOfType(String artefactType,
                                    Class theClazz)

  Returns true if the specified class is of the given artefact type as defined by the ArtefactHandler

  Specified by:
    `isArtefactOfType` in interface `GrailsApplication`
  Parameters:
    `artefactType` - The type of the artefact
    `theClazz` - The class
  Returns:
    True if it is of the specified artefactType
  See Also:
    `ArtefactHandler`

### isArtefactOfType

    public boolean isArtefactOfType(String artefactType,
                                    String className)

  Returns true if the specified class name is of the given artefact type as defined by the ArtefactHandler

  Specified by:
    `isArtefactOfType` in interface `GrailsApplication`
  Parameters:
    `artefactType` - The type of the artefact
    `className` - The class name
  Returns:
    True if it is of the specified artefactType
  See Also:
    `ArtefactHandler`

### getArtefact

    public GrailsClass getArtefact(String artefactType,
                                   String name)

  Retrieves an artefact for the given type and nam

  Specified by:
    `getArtefact` in interface `GrailsApplication`
  Parameters:
    `artefactType` - The artefact type as defined by a registered ArtefactHandler
    `name` - The name of the class
  Returns:
    A GrailsClass instance or null if none could be found for the given artefactType and name

### getArtefactType

    public ArtefactHandler getArtefactType(Class theClass)

  Description copied from interface: `GrailsApplication`
  Returns the ArtefactHandler for the given class or null

  Specified by:
    `getArtefactType` in interface `GrailsApplication`
  Parameters:
    `theClass` - The class
  Returns:
    The ArtefactHandler

### getArtefacts

    public GrailsClass[] getArtefacts(String artefactType)

  Returns all of the GrailsClass instances for the given artefactType as defined by the ArtefactHandler

  Specified by:
    `getArtefacts` in interface `GrailsApplication`
  Parameters:
    `artefactType` - The type of the artefact defined by the ArtefactHandler
  Returns:
    An array of classes for the given artefact

### getArtefactForFeature

    public GrailsClass getArtefactForFeature(String artefactType,
                                             Object featureID)

  Description copied from interface: `GrailsApplication`

  Get an artefact GrailsClass by a "feature" which depending on the artefact may be a URI or tag name for example

  Specified by:
    `getArtefactForFeature` in interface `GrailsApplication`
  Parameters:
    `artefactType` - The type ID of the artefact, i.e. "TagLib"
    `featureID` - The "feature" ID, say a URL or tag name
  Returns:
    The grails class or null if none is found

### addArtefact

    public GrailsClass addArtefact(String artefactType,
                                   Class artefactClass)

  Adds an artefact of the given type for the given Class.

  Specified by:
    `addArtefact` in interface `GrailsApplication`
  Parameters:
    `artefactType` - The type of the artefact as defined by a ArtefactHandler instance
    `artefactClass` - A Class instance that matches the type defined by the ArtefactHandler
  Returns:
    The GrailsClass if successful or null if it couldn't be added
  Throws:
    `GrailsConfigurationException` - If the specified Class is not the same as the type defined by the ArtefactHandler
  See Also:
    `ArtefactHandler`

### addArtefact

    public GrailsClass addArtefact(String artefactType,
                                   GrailsClass artefactGrailsClass)

  Adds an artefact of the given type for the given GrailsClass.

  Specified by:
    `addArtefact` in interface `GrailsApplication`
  Parameters:
    `artefactType` - The type of the artefact as defined by a ArtefactHandler instance
    `artefactGrailsClass` - A GrailsClass instance that matches the type defined by the ArtefactHandler
  Returns:
    The GrailsClass if successful or null if it couldn't be added
  Throws:
    `GrailsConfigurationException` - If the specified GrailsClass is not the same as the type defined by the ArtefactHandler
  See Also:
    `ArtefactHandler`

### registerArtefactHandler

    public void registerArtefactHandler(ArtefactHandler handler)

  Registers a new ArtefactHandler that is responsible for identifying and managing an particular artefact type that is defined by some convention

  Specified by:
    `registerArtefactHandler` in interface `GrailsApplication`
  Parameters:
    `handler` - The ArtefactHandler to regster

### hasArtefactHandler

    public boolean hasArtefactHandler(String type)

  Description copied from interface: `GrailsApplication`

  Test whether an artefact handler exists for a given type

  Specified by:
    `hasArtefactHandler` in interface `GrailsApplication`
  Parameters:
    `type` - The type of the handler
  Returns:
    True if it does

### getArtefactHandlers

    public ArtefactHandler[] getArtefactHandlers()

  Description copied from interface: `GrailsApplication`

  Obtain a list of all the artefact handlers

  Specified by:
    `getArtefactHandlers` in interface `GrailsApplication`
  Returns:
    The list, possible empty but not null, of all currently registered handlers

### getArtefactHandler

    public ArtefactHandler getArtefactHandler(String type)

  Description copied from interface: `GrailsApplication`
  Returns the ArtefactHandler for the given type

  Specified by:
    `getArtefactHandler` in interface `GrailsApplication`
  Parameters:
    `type` - The artefact handler type
  Returns:
    The artefact handler

### getArtefactInfo

    public ArtefactInfo getArtefactInfo(String artefactType)

  Get the cache of classes for the specified artefact type

  Specified by:
    `getArtefactInfo` in interface `GrailsApplication`
  Parameters:
    `artefactType` - The name of an artefact type
  Returns:
    The cache of classes for the type, or null if no cache exists

### invokeMethod

    public Object invokeMethod(String methodName,
                               Object args)

  Overrides method invocation to return dynamic artefact methods

  We will support getXXXXClasses() and isXXXXClass(class)

  Specified by:
    `invokeMethod` in interface `groovy.lang.GroovyObject`
  Overrides:
    `invokeMethod` in class `groovy.lang.GroovyObjectSupport`
  Parameters:
    `methodName` - The name of the method
    `args` - The arguments to the method
  Returns:
    The return value of the method
  To do:
    Need to add matches for addClass(java.lang.Class) and addClass(GrailsClass)

### getProperty

    public Object getProperty(String propertyName)

  Override property access and hit on xxxxClasses to return class arrays of artefacts

  Specified by:
    `getProperty` in interface `groovy.lang.GroovyObject`
  Overrides:
    `getProperty` in class `groovy.lang.GroovyObjectSupport`
  Parameters:
    `propertyName` - The name of the property, if it ends in *Classes then match and invoke internal ArtefactHandler
  Returns:
    All the artifacts or delegate to super.getProperty

### initialise

    public void initialise()

  Description copied from interface: `GrailsApplication`
  Initialise this GrailsApplication

  Specified by:
    `initialise` in interface `GrailsApplication`

### isInitialised

    public boolean isInitialised()

  Description copied from interface: `GrailsApplication`
  Returns whether this GrailsApplication has been initialised or not

  Specified by:
    `isInitialised` in interface `GrailsApplication`
  Returns:
    True if it has been initialised

### getMetadata

    public Map getMetadata()

  Description copied from interface: `GrailsApplication`

  Get access to the project's metadata, specified in application.properties

  This provides access to information like required grails version, application name, version etc but NOT general application settings.

  Specified by:
    `getMetadata` in interface `GrailsApplication`
  Returns:
    A read-only Map of data about the application, not environment specific

### getArtefactByLogicalPropertyName

    public GrailsClass getArtefactByLogicalPropertyName(String type,
                                                        String logicalName)

  Description copied from interface: `GrailsApplication`
  Retrieves an artefact by its logical property name. For example the logical property name of BookController would be book

  Specified by:
    `getArtefactByLogicalPropertyName` in interface `GrailsApplication`
  Parameters:
    `type` - The artefact type
    `logicalName` - The logical name
  Returns:
    The GrailsClass or null if it doesn't exist

### addArtefact

    public void addArtefact(Class artefact)

  Description copied from interface: `GrailsApplication`
  Adds the given artefact, attempting to determine type from

  Specified by:
    `addArtefact` in interface `GrailsApplication`
  Parameters:
    `artefact` - The artefact to add

### isWarDeployed

    public boolean isWarDeployed()

  Description copied from interface: `GrailsApplication`
  Returns true if this application has been deployed as a WAR file

  Specified by:
    `isWarDeployed` in interface `GrailsApplication`
  Returns:
    True if the application is WAR deployed

### setBeanClassLoader

    public void setBeanClassLoader(ClassLoader classLoader)

  Specified by:
    `setBeanClassLoader` in interface `BeanClassLoaderAware`

### addOverridableArtefact

    public void addOverridableArtefact(Class artefact)

  Description copied from interface: `GrailsApplication`
  Adds an artefact that can be overriden by user defined classes

  Specified by:
    `addOverridableArtefact` in interface `GrailsApplication`
  Parameters:
    `artefact` - An overridable artefact

### configChanged

    public void configChanged()

  Description copied from interface: `GrailsApplication`
  Fired to inform the application when the Config.groovy file changes

  Specified by:
    `configChanged` in interface `GrailsApplication`

### addOverridableArtefact

    public GrailsClass addOverridableArtefact(String artefactType,
                                              Class artefactClass)

  Adds an artefact of the given type for the given Class.

  Parameters:
    `artefactType` - The type of the artefact as defined by a ArtefactHandler instance
    `artefactClass` - A Class instance that matches the type defined by the ArtefactHandler
  Returns:
    The GrailsClass if successful or null if it couldn't be added
  Throws:
    `GrailsConfigurationException` - If the specified Class is not the same as the type defined by the ArtefactHandler
  See Also:
    `ArtefactHandler`

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