org.eclipse.incquery.runtime.emf

Class EMFBaseIndexWrapper

java.lang.Object

org.eclipse.incquery.runtime.emf.EMFBaseIndexWrapper

All Implemented Interfaces:

IBaseIndex

public class EMFBaseIndexWrapper
extends java.lang.Object
implements IBaseIndex

Wraps the EMF base index into the IBaseIndex interface.

Author:

Bergmann Gabor

Constructor Summary

Constructors

Constructor and Description
EMFBaseIndexWrapper(NavigationHelper navigationHelper)

Method Summary

Modifier and Type	Method and Description
void	addBaseIndexChangeListener(IncQueryBaseIndexChangeListener listener) Adds a coarse-grained listener that will be invoked after the NavigationHelper index or the underlying model is changed.
boolean	addIndexingErrorListener(IIndexingErrorListener listener) Adds a listener for internal errors in the index.
boolean	addInstanceObserver(IInstanceObserver observer, java.lang.Object observedObject) Register a lightweight observer that is notified if any edge starting at the given Object changes.
<V> V	coalesceTraversals(java.util.concurrent.Callable<V> callable) The given callback will be executed, and all model traversals and index registrations will be delayed until the execution is done.
NavigationHelper	getNavigationHelper()
void	removeBaseIndexChangeListener(IncQueryBaseIndexChangeListener listener) Removes a registered listener.
boolean	removeIndexingErrorListener(IIndexingErrorListener listener) Removes a listener for internal errors in the index
boolean	removeInstanceObserver(IInstanceObserver observer, java.lang.Object observedObject) Unregisters a lightweight observer for the given Object.
void	resampleDerivedFeatures() Updates the value of indexed derived features that are not well-behaving.

Methods inherited from class java.lang.Object

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

Constructor Detail

EMFBaseIndexWrapper

public EMFBaseIndexWrapper(NavigationHelper navigationHelper)

Parameters:

navigationHelper -

Method Detail

getNavigationHelper

public NavigationHelper getNavigationHelper()

Returns:

the underlying index object

resampleDerivedFeatures

public void resampleDerivedFeatures()

Description copied from interface: IBaseIndex

Updates the value of indexed derived features that are not well-behaving.

Specified by:

resampleDerivedFeatures in interface IBaseIndex

coalesceTraversals

public <V> V coalesceTraversals(java.util.concurrent.Callable<V> callable)
                         throws java.lang.reflect.InvocationTargetException

Description copied from interface: IBaseIndex

The given callback will be executed, and all model traversals and index registrations will be delayed until the execution is done. If there are any outstanding feature, class or datatype registrations, a single coalesced model traversal will initialize the caches and deliver the notifications.

Specified by:

coalesceTraversals in interface IBaseIndex

Throws:

java.lang.reflect.InvocationTargetException

addIndexingErrorListener

public boolean addIndexingErrorListener(IIndexingErrorListener listener)

Description copied from interface: IBaseIndex

Adds a listener for internal errors in the index. A listener can only be added once.

Specified by:

addIndexingErrorListener in interface IBaseIndex

removeIndexingErrorListener

public boolean removeIndexingErrorListener(IIndexingErrorListener listener)

Description copied from interface: IBaseIndex

Removes a listener for internal errors in the index

Specified by:

removeIndexingErrorListener in interface IBaseIndex

addBaseIndexChangeListener

public void addBaseIndexChangeListener(IncQueryBaseIndexChangeListener listener)

Description copied from interface: IBaseIndex

Adds a coarse-grained listener that will be invoked after the NavigationHelper index or the underlying model is changed. Can be used e.g. to check model contents. Not intended for general use.

See IBaseIndex.removeBaseIndexChangeListener(IncQueryBaseIndexChangeListener)

Specified by:

addBaseIndexChangeListener in interface IBaseIndex

removeBaseIndexChangeListener

public void removeBaseIndexChangeListener(IncQueryBaseIndexChangeListener listener)

Description copied from interface: IBaseIndex

Removes a registered listener.

See IBaseIndex.addBaseIndexChangeListener(IncQueryBaseIndexChangeListener)

Specified by:

removeBaseIndexChangeListener in interface IBaseIndex

addInstanceObserver

public boolean addInstanceObserver(IInstanceObserver observer,
                                   java.lang.Object observedObject)

Description copied from interface: IBaseIndex

Register a lightweight observer that is notified if any edge starting at the given Object changes.

Specified by:

addInstanceObserver in interface IBaseIndex

Parameters:

observer - the listener instance

observedObject - the observed instance object

Returns:

false if no observer can be registered for the given instance (e.g. it is a primitive), or observer was already registered (call has no effect)

removeInstanceObserver

public boolean removeInstanceObserver(IInstanceObserver observer,
                                      java.lang.Object observedObject)

Description copied from interface: IBaseIndex

Unregisters a lightweight observer for the given Object.

Specified by:

removeInstanceObserver in interface IBaseIndex

Parameters:

observer - the listener instance

observedObject - the observed instance object

Returns:

false if no observer can be registered for the given instance (e.g. it is a primitive), or no observer was registered previously (call has no effect)