org.eclipse.xtext.resource.containers
Class StateBasedContainer

java.lang.Object
  org.eclipse.xtext.resource.impl.AbstractCompoundSelectable
      org.eclipse.xtext.resource.impl.AbstractContainer
          org.eclipse.xtext.resource.impl.ResourceDescriptionsBasedContainer
              org.eclipse.xtext.resource.containers.StateBasedContainer

All Implemented Interfaces:

IContainer, IResourceDescription.Event.Listener, ISelectable

public class StateBasedContainer
extends ResourceDescriptionsBasedContainer

A specialized container which is based on some long living lightweight state. A container state is used to decide about the actually contained resource descriptions.

Author:

Sebastian Zarnekow - Initial contribution and API

Nested Class Summary

Nested classes/interfaces inherited from interface org.eclipse.xtext.resource.IContainer

IContainer.Manager

Field Summary

Fields inherited from interface org.eclipse.xtext.resource.IContainer

NULL_CONTAINER

Constructor Summary

StateBasedContainer(IResourceDescriptions descriptions, IContainerState state)

Method Summary

protected java.util.Map<org.eclipse.emf.common.util.URI,IResourceDescription>	doGetUriToDescription()
protected java.lang.Iterable<IEObjectDescription>	filterByURI(java.lang.Iterable<IEObjectDescription> unfiltered)
java.lang.Iterable<IEObjectDescription>	getExportedObjects()
java.lang.Iterable<IEObjectDescription>	getExportedObjects(org.eclipse.emf.ecore.EClass type, QualifiedName qualifiedName, boolean ignoreCase)
java.lang.Iterable<IEObjectDescription>	getExportedObjectsByObject(org.eclipse.emf.ecore.EObject object)
java.lang.Iterable<IEObjectDescription>	getExportedObjectsByType(org.eclipse.emf.ecore.EClass type)
IResourceDescription	getResourceDescription(org.eclipse.emf.common.util.URI uri)
int	getResourceDescriptionCount()
java.lang.Iterable<IResourceDescription>	getResourceDescriptions()
boolean	hasResourceDescription(org.eclipse.emf.common.util.URI uri)
boolean	isEmpty() Clients may want to check the selectable to skip its processing in case it is empty.

Methods inherited from class org.eclipse.xtext.resource.impl.ResourceDescriptionsBasedContainer

contains, descriptionsChanged, getDescriptions, getUriToDescription, isUriToDescriptionCacheEnabled, setUriToDescriptionCacheEnabled

Methods inherited from class org.eclipse.xtext.resource.impl.AbstractContainer

getSelectables

Methods inherited from class java.lang.Object

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

Constructor Detail

StateBasedContainer

public StateBasedContainer(IResourceDescriptions descriptions,
                           IContainerState state)

Method Detail

filterByURI

protected java.lang.Iterable<IEObjectDescription> filterByURI(java.lang.Iterable<IEObjectDescription> unfiltered)

Overrides:

filterByURI in class ResourceDescriptionsBasedContainer

hasResourceDescription

public boolean hasResourceDescription(org.eclipse.emf.common.util.URI uri)

Specified by:

hasResourceDescription in interface IContainer

Overrides:

hasResourceDescription in class ResourceDescriptionsBasedContainer

Returns:

true if the container can provide a resource description with the given uri.

getResourceDescriptionCount

public int getResourceDescriptionCount()

Specified by:

getResourceDescriptionCount in interface IContainer

Overrides:

getResourceDescriptionCount in class ResourceDescriptionsBasedContainer

Returns:

the total number of resource descriptions returned by IContainer.getResourceDescriptions()

isEmpty

public boolean isEmpty()

Description copied from interface: ISelectable

Clients may want to check the selectable to skip its processing in case it is empty. Implementations should be fast and not require expensive precalculation. Selectable may return false if it is too expensive to compute the actual result.

Specified by:

isEmpty in interface ISelectable

Overrides:

isEmpty in class AbstractCompoundSelectable

Returns:

true if the selectable does not provide any descriptions.

getResourceDescription

public IResourceDescription getResourceDescription(org.eclipse.emf.common.util.URI uri)

Specified by:

getResourceDescription in interface IContainer

Overrides:

getResourceDescription in class ResourceDescriptionsBasedContainer

Returns:

the IResourceDescription for the given URI, or null is this container does not contain such an IResourceDescription. The result may be a cached view on the actual content of the underlying resource.

getResourceDescriptions

public java.lang.Iterable<IResourceDescription> getResourceDescriptions()

Specified by:

getResourceDescriptions in interface IContainer

Overrides:

getResourceDescriptions in class ResourceDescriptionsBasedContainer

Returns:

the IResourceDescription contained in this container. The result is never null. The result may be a cached view on the actual content of the underlying resources.

doGetUriToDescription

protected java.util.Map<org.eclipse.emf.common.util.URI,IResourceDescription> doGetUriToDescription()

Overrides:

doGetUriToDescription in class ResourceDescriptionsBasedContainer

getExportedObjects

public java.lang.Iterable<IEObjectDescription> getExportedObjects()

Specified by:

getExportedObjects in interface ISelectable

Overrides:

getExportedObjects in class AbstractCompoundSelectable

Returns:

all exported elements. May not be null.

getExportedObjectsByType

public java.lang.Iterable<IEObjectDescription> getExportedObjectsByType(org.eclipse.emf.ecore.EClass type)

Specified by:

getExportedObjectsByType in interface ISelectable

Overrides:

getExportedObjectsByType in class ResourceDescriptionsBasedContainer

Returns:

all elements which match the given type. May not be null.

getExportedObjectsByObject

public java.lang.Iterable<IEObjectDescription> getExportedObjectsByObject(org.eclipse.emf.ecore.EObject object)

Specified by:

getExportedObjectsByObject in interface ISelectable

Overrides:

getExportedObjectsByObject in class AbstractContainer

Returns:

all elements which match the given instance. May not be null.

getExportedObjects

public java.lang.Iterable<IEObjectDescription> getExportedObjects(org.eclipse.emf.ecore.EClass type,
                                                                  QualifiedName qualifiedName,
                                                                  boolean ignoreCase)

Specified by:

getExportedObjects in interface ISelectable

Overrides:

getExportedObjects in class ResourceDescriptionsBasedContainer

Returns:

all elements which match the given qualified name and type. May not be null.