bundles/org.eclipse.emfforms.core.services.databinding.index/src/org/eclipse/emfforms/internal/core/services/databinding/index/IndexDomainModelReferenceConverter.java - emfclient/org.eclipse.emf.ecp.core - Git at Google

 /*******************************************************************************
  * Copyright (c) 2011-2015 EclipseSource Muenchen GmbH and others.
  *
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * Lucas Koehler - initial API and implementation
  ******************************************************************************/
 package org.eclipse.emfforms.internal.core.services.databinding.index;

 import java.util.List;

 import org.eclipse.emf.common.util.EList;
 import org.eclipse.emf.databinding.IEMFListProperty;
 import org.eclipse.emf.databinding.IEMFValueProperty;
 import org.eclipse.emf.databinding.edit.EMFEditProperties;
 import org.eclipse.emf.databinding.internal.EMFValuePropertyDecorator;
 import org.eclipse.emf.ecore.EObject;
 import org.eclipse.emf.ecore.EReference;
 import org.eclipse.emf.ecore.EStructuralFeature;
 import org.eclipse.emf.ecore.EStructuralFeature.Setting;
 import org.eclipse.emf.ecp.view.spi.indexdmr.model.VIndexDomainModelReference;
 import org.eclipse.emf.ecp.view.spi.model.VDomainModelReference;
 import org.eclipse.emf.edit.domain.AdapterFactoryEditingDomain;
 import org.eclipse.emf.edit.domain.EditingDomain;
 import org.eclipse.emfforms.spi.core.services.databinding.DatabindingFailedException;
 import org.eclipse.emfforms.spi.core.services.databinding.emf.DomainModelReferenceConverterEMF;
 import org.eclipse.emfforms.spi.core.services.databinding.emf.EMFFormsDatabindingEMF;
 import org.osgi.framework.BundleContext;
 import org.osgi.framework.ServiceReference;

 /**
  * An implementation of {@link DomainModelReferenceConverterEMF} that converts {@link VIndexDomainModelReference
  * VIndexDomainModelReferences}.
  *
  * @author Lucas Koehler
  *
  */
 @SuppressWarnings("restriction")
 public class IndexDomainModelReferenceConverter implements DomainModelReferenceConverterEMF {
 	private EMFFormsDatabindingEMF emfFormsDatabinding;
 	private ServiceReference<EMFFormsDatabindingEMF> databindingServiceReference;

 	/**
 	 * Sets the {@link EMFFormsDatabindingEMF}.
 	 *
 	 * @param emfFormsDatabinding the emfFormsDatabinding to set
 	 */
 	void setEMFFormsDatabinding(EMFFormsDatabindingEMF emfFormsDatabinding) {
 		this.emfFormsDatabinding = emfFormsDatabinding;
 	}

 	/**
 	 * Unsets the {@link EMFFormsDatabindingEMF}.
 	 */
 	void unsetEMFFormsDatabinding() {
 		emfFormsDatabinding = null;
 	}

 	/**
 	 * This method is called by the OSGI framework when this {@link DomainModelReferenceConverterEMF} is activated. It
 	 * retrieves the {@link EMFFormsDatabindingEMF EMF Forms databinding service}.
 	 *
 	 * @param bundleContext The {@link BundleContext} of this classes bundle.
 	 */
 	protected final void activate(BundleContext bundleContext) {
 		databindingServiceReference = bundleContext.getServiceReference(EMFFormsDatabindingEMF.class);
 		if (databindingServiceReference == null) {
 			throw new IllegalStateException(
 				"The org.eclipse.emfforms.spi.core.services.databinding.emf.EMFFormsDatabindingEMF Service is not available!"); //$NON-NLS-1$
 		}
 		setEMFFormsDatabinding(bundleContext.getService(databindingServiceReference));

 	}

 	/**
 	 * This method is called by the OSGI framework when this {@link DomainModelReferenceConverterEMF} is deactivated.
 	 * It frees the {@link EMFFormsDatabindingEMF EMF Forms databinding service}.
 	 *
 	 * @param bundleContext The {@link BundleContext} of this classes bundle.
 	 */
 	protected final void deactivate(BundleContext bundleContext) {
 		unsetEMFFormsDatabinding();
 		bundleContext.ungetService(databindingServiceReference);
 	}

 	/**
 	 * {@inheritDoc}
 	 *
 	 * @see DomainModelReferenceConverterEMF#isApplicable(VDomainModelReference)
 	 */
 	@Override
 	public double isApplicable(VDomainModelReference domainModelReference) {
 		if (domainModelReference == null) {
 			throw new IllegalArgumentException("The given VDomainModelReference must not be null."); //$NON-NLS-1$
 		}
 		if (domainModelReference instanceof VIndexDomainModelReference) {
 			return 10d;
 		}
 		return NOT_APPLICABLE;
 	}

 	/**
 	 * {@inheritDoc}
 	 *
 	 * @see DomainModelReferenceConverterEMF#convertToValueProperty(VDomainModelReference,EObject)
 	 */
 	@Override
 	public IEMFValueProperty convertToValueProperty(VDomainModelReference domainModelReference, EObject object)
 		throws DatabindingFailedException {
 		if (domainModelReference == null) {
 			throw new IllegalArgumentException("The given VDomainModelReference must not be null."); //$NON-NLS-1$
 		}
 		if (!VIndexDomainModelReference.class.isInstance(domainModelReference)) {
 			throw new IllegalArgumentException(
 				"DomainModelReference must be an instance of VIndexDomainModelReference."); //$NON-NLS-1$
 		}

 		final VIndexDomainModelReference indexReference = VIndexDomainModelReference.class.cast(domainModelReference);

 		final IEMFValueProperty valueProperty;

 		if (indexReference.getPrefixDMR() != null) {
 			final IEMFValueProperty prefixProperty = emfFormsDatabinding.getValueProperty(indexReference.getPrefixDMR(),
 				object);
 			valueProperty = new EMFValuePropertyDecorator(new EMFIndexedValuePropertyDelegator(getEditingDomain(object),
 				indexReference.getIndex(), prefixProperty, prefixProperty.getStructuralFeature()),
 				prefixProperty.getStructuralFeature());
 		} else {
 			if (indexReference.getDomainModelEFeature() == null) {
 				throw new DatabindingFailedException(
 					"The field domainModelEFeature of the given VIndexDomainModelReference must not be null."); //$NON-NLS-1$
 			}

 			checkListType(indexReference.getDomainModelEFeature());

 			final List<EReference> referencePath = indexReference.getDomainModelEReferencePath();
 			final IEMFValueProperty indexedValueProperty = new EMFValuePropertyDecorator(new EMFIndexedValueProperty(
 				getEditingDomain(object),
 				indexReference.getIndex(),
 				indexReference.getDomainModelEFeature()), indexReference.getDomainModelEFeature());

 			if (referencePath.isEmpty()) {
 				valueProperty = indexedValueProperty;
 			} else {
 				IEMFValueProperty emfValueProperty = EMFEditProperties
 					.value(getEditingDomain(object), referencePath.get(0));
 				for (int i = 1; i < referencePath.size(); i++) {
 					emfValueProperty = emfValueProperty.value(referencePath.get(i));
 				}

 				valueProperty = emfValueProperty.value(indexedValueProperty);
 			}
 		}
 		return valueProperty.value(emfFormsDatabinding.getValueProperty(indexReference.getTargetDMR(), object));
 	}

 	/**
 	 * {@inheritDoc}
 	 *
 	 * @see DomainModelReferenceConverterEMF#convertToListProperty(VDomainModelReference,EObject)
 	 */
 	@Override
 	public IEMFListProperty convertToListProperty(VDomainModelReference domainModelReference, EObject object)
 		throws DatabindingFailedException {
 		if (domainModelReference == null) {
 			throw new IllegalArgumentException("The given VDomainModelReference must not be null."); //$NON-NLS-1$
 		}
 		if (!VIndexDomainModelReference.class.isInstance(domainModelReference)) {
 			throw new IllegalArgumentException(
 				"DomainModelReference must be an instance of VIndexDomainModelReference."); //$NON-NLS-1$
 		}

 		final VIndexDomainModelReference indexReference = VIndexDomainModelReference.class.cast(domainModelReference);

 		IEMFValueProperty valueProperty;

 		if (indexReference.getPrefixDMR() != null) {
 			final IEMFValueProperty prefixProperty = emfFormsDatabinding.getValueProperty(indexReference.getPrefixDMR(),
 				object);
 			valueProperty = new EMFValuePropertyDecorator(
 				new EMFIndexedValuePropertyDelegator(getEditingDomain(object), indexReference.getIndex(),
 					prefixProperty, prefixProperty.getStructuralFeature()),
 				prefixProperty.getStructuralFeature());
 		} else {
 			if (indexReference.getDomainModelEFeature() == null) {
 				throw new DatabindingFailedException(
 					"The field domainModelEFeature of the given VIndexDomainModelReference must not be null."); //$NON-NLS-1$
 			}

 			checkListType(indexReference.getDomainModelEFeature());

 			final List<EReference> referencePath = indexReference.getDomainModelEReferencePath();

 			final IEMFValueProperty indexedValueProperty = new EMFValuePropertyDecorator(new EMFIndexedValueProperty(
 				getEditingDomain(object),
 				indexReference.getIndex(),
 				indexReference.getDomainModelEFeature()), indexReference.getDomainModelEFeature());

 			if (referencePath.isEmpty()) {
 				valueProperty = indexedValueProperty;
 			} else {
 				IEMFValueProperty emfValueProperty = EMFEditProperties
 					.value(getEditingDomain(object), referencePath.get(0));
 				for (int i = 1; i < referencePath.size(); i++) {
 					emfValueProperty = emfValueProperty.value(referencePath.get(i));
 				}

 				valueProperty = emfValueProperty.value(indexedValueProperty);
 			}
 		}

 		return valueProperty.list(emfFormsDatabinding.getListProperty(indexReference.getTargetDMR(), object));
 	}

 	/**
 	 * Checks whether the given structural feature references a proper list to generate a value or list property.
 	 *
 	 * @param structuralFeature The feature to check
 	 * @throws IllegalListTypeException if the structural feature doesn't reference a proper list.
 	 */
 	private void checkListType(EStructuralFeature structuralFeature) throws IllegalListTypeException {
 		if (!structuralFeature.isMany()) {
 			throw new IllegalListTypeException(
 				"The VIndexDomainModelReference's domainModelEFeature must reference a list."); //$NON-NLS-1$
 		}
 		if (!EReference.class.isInstance(structuralFeature)) {
 			throw new IllegalListTypeException(
 				"The VIndexDomainModelReference's domainModelEFeature must reference a list of EObjects."); //$NON-NLS-1$
 		}
 	}

 	private EditingDomain getEditingDomain(EObject object) throws DatabindingFailedException {
 		return AdapterFactoryEditingDomain.getEditingDomainFor(object);
 	}

 	/**
 	 * {@inheritDoc}
 	 *
 	 * @see org.eclipse.emfforms.spi.core.services.databinding.emf.DomainModelReferenceConverterEMF#getSetting(org.eclipse.emf.ecp.view.spi.model.VDomainModelReference,
 	 *      org.eclipse.emf.ecore.EObject)
 	 */
 	@SuppressWarnings("unchecked")
 	@Override
 	public Setting getSetting(VDomainModelReference domainModelReference, EObject object)
 		throws DatabindingFailedException {
 		if (domainModelReference == null) {
 			throw new IllegalArgumentException("The given VDomainModelReference must not be null."); //$NON-NLS-1$
 		}
 		if (!VIndexDomainModelReference.class.isInstance(domainModelReference)) {
 			throw new IllegalArgumentException(
 				"DomainModelReference must be an instance of VIndexDomainModelReference."); //$NON-NLS-1$
 		}
 		final VIndexDomainModelReference indexDMR = VIndexDomainModelReference.class
 			.cast(domainModelReference);

 		EList<EObject> eList;
 		if (indexDMR.getPrefixDMR() == null) {
 			if (indexDMR.getDomainModelEFeature() == null) {
 				throw new DatabindingFailedException(
 					"The field domainModelEFeature of the given VIndexDomainModelReference must not be null."); //$NON-NLS-1$
 			}
 			checkListType(indexDMR.getDomainModelEFeature());

 			EObject currentObject = object;
 			for (final EReference eReference : indexDMR.getDomainModelEReferencePath()) {
 				currentObject = (EObject) currentObject.eGet(eReference);
 				if (currentObject == null) {
 					throw new DatabindingFailedException("The path is not fully resolved."); //$NON-NLS-1$
 				}
 			}
 			eList = (EList<EObject>) currentObject.eGet(indexDMR.getDomainModelEFeature());
 		} else {
 			final Setting setting = emfFormsDatabinding.getSetting(indexDMR.getPrefixDMR(), object);
 			eList = (EList<EObject>) setting.get(true);
 		}
 		if (eList.isEmpty()) {
 			throw new DatabindingFailedException(
 				"The list used by the index dmr mustr must not be empty."); //$NON-NLS-1$
 		}
 		final EObject eObject = eList.get(indexDMR.getIndex());
 		return emfFormsDatabinding.getSetting(indexDMR.getTargetDMR(), eObject);
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2011-2015 EclipseSource Muenchen GmbH and others.
	*
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* Lucas Koehler - initial API and implementation
	******************************************************************************/
	package org.eclipse.emfforms.internal.core.services.databinding.index;

	import java.util.List;

	import org.eclipse.emf.common.util.EList;
	import org.eclipse.emf.databinding.IEMFListProperty;
	import org.eclipse.emf.databinding.IEMFValueProperty;
	import org.eclipse.emf.databinding.edit.EMFEditProperties;
	import org.eclipse.emf.databinding.internal.EMFValuePropertyDecorator;
	import org.eclipse.emf.ecore.EObject;
	import org.eclipse.emf.ecore.EReference;
	import org.eclipse.emf.ecore.EStructuralFeature;
	import org.eclipse.emf.ecore.EStructuralFeature.Setting;
	import org.eclipse.emf.ecp.view.spi.indexdmr.model.VIndexDomainModelReference;
	import org.eclipse.emf.ecp.view.spi.model.VDomainModelReference;
	import org.eclipse.emf.edit.domain.AdapterFactoryEditingDomain;
	import org.eclipse.emf.edit.domain.EditingDomain;
	import org.eclipse.emfforms.spi.core.services.databinding.DatabindingFailedException;
	import org.eclipse.emfforms.spi.core.services.databinding.emf.DomainModelReferenceConverterEMF;
	import org.eclipse.emfforms.spi.core.services.databinding.emf.EMFFormsDatabindingEMF;
	import org.osgi.framework.BundleContext;
	import org.osgi.framework.ServiceReference;

	/**
	* An implementation of {@link DomainModelReferenceConverterEMF} that converts {@link VIndexDomainModelReference
	* VIndexDomainModelReferences}.
	*
	* @author Lucas Koehler
	*
	*/
	@SuppressWarnings("restriction")
	public class IndexDomainModelReferenceConverter implements DomainModelReferenceConverterEMF {
	private EMFFormsDatabindingEMF emfFormsDatabinding;
	private ServiceReference<EMFFormsDatabindingEMF> databindingServiceReference;

	/**
	* Sets the {@link EMFFormsDatabindingEMF}.
	*
	* @param emfFormsDatabinding the emfFormsDatabinding to set
	*/
	void setEMFFormsDatabinding(EMFFormsDatabindingEMF emfFormsDatabinding) {
	this.emfFormsDatabinding = emfFormsDatabinding;
	}

	/**
	* Unsets the {@link EMFFormsDatabindingEMF}.
	*/
	void unsetEMFFormsDatabinding() {
	emfFormsDatabinding = null;
	}

	/**
	* This method is called by the OSGI framework when this {@link DomainModelReferenceConverterEMF} is activated. It
	* retrieves the {@link EMFFormsDatabindingEMF EMF Forms databinding service}.
	*
	* @param bundleContext The {@link BundleContext} of this classes bundle.
	*/
	protected final void activate(BundleContext bundleContext) {
	databindingServiceReference = bundleContext.getServiceReference(EMFFormsDatabindingEMF.class);
	if (databindingServiceReference == null) {
	throw new IllegalStateException(
	"The org.eclipse.emfforms.spi.core.services.databinding.emf.EMFFormsDatabindingEMF Service is not available!"); //$NON-NLS-1$
	}
	setEMFFormsDatabinding(bundleContext.getService(databindingServiceReference));

	}

	/**
	* This method is called by the OSGI framework when this {@link DomainModelReferenceConverterEMF} is deactivated.
	* It frees the {@link EMFFormsDatabindingEMF EMF Forms databinding service}.
	*
	* @param bundleContext The {@link BundleContext} of this classes bundle.
	*/
	protected final void deactivate(BundleContext bundleContext) {
	unsetEMFFormsDatabinding();
	bundleContext.ungetService(databindingServiceReference);
	}

	/**
	* {@inheritDoc}
	*
	* @see DomainModelReferenceConverterEMF#isApplicable(VDomainModelReference)
	*/
	@Override
	public double isApplicable(VDomainModelReference domainModelReference) {
	if (domainModelReference == null) {
	throw new IllegalArgumentException("The given VDomainModelReference must not be null."); //$NON-NLS-1$
	}
	if (domainModelReference instanceof VIndexDomainModelReference) {
	return 10d;
	}
	return NOT_APPLICABLE;
	}

	/**
	* {@inheritDoc}
	*
	* @see DomainModelReferenceConverterEMF#convertToValueProperty(VDomainModelReference,EObject)
	*/
	@Override
	public IEMFValueProperty convertToValueProperty(VDomainModelReference domainModelReference, EObject object)
	throws DatabindingFailedException {
	if (domainModelReference == null) {
	throw new IllegalArgumentException("The given VDomainModelReference must not be null."); //$NON-NLS-1$
	}
	if (!VIndexDomainModelReference.class.isInstance(domainModelReference)) {
	throw new IllegalArgumentException(
	"DomainModelReference must be an instance of VIndexDomainModelReference."); //$NON-NLS-1$
	}

	final VIndexDomainModelReference indexReference = VIndexDomainModelReference.class.cast(domainModelReference);

	final IEMFValueProperty valueProperty;

	if (indexReference.getPrefixDMR() != null) {
	final IEMFValueProperty prefixProperty = emfFormsDatabinding.getValueProperty(indexReference.getPrefixDMR(),
	object);
	valueProperty = new EMFValuePropertyDecorator(new EMFIndexedValuePropertyDelegator(getEditingDomain(object),
	indexReference.getIndex(), prefixProperty, prefixProperty.getStructuralFeature()),
	prefixProperty.getStructuralFeature());
	} else {
	if (indexReference.getDomainModelEFeature() == null) {
	throw new DatabindingFailedException(
	"The field domainModelEFeature of the given VIndexDomainModelReference must not be null."); //$NON-NLS-1$
	}

	checkListType(indexReference.getDomainModelEFeature());

	final List<EReference> referencePath = indexReference.getDomainModelEReferencePath();
	final IEMFValueProperty indexedValueProperty = new EMFValuePropertyDecorator(new EMFIndexedValueProperty(
	getEditingDomain(object),
	indexReference.getIndex(),
	indexReference.getDomainModelEFeature()), indexReference.getDomainModelEFeature());

	if (referencePath.isEmpty()) {
	valueProperty = indexedValueProperty;
	} else {
	IEMFValueProperty emfValueProperty = EMFEditProperties
	.value(getEditingDomain(object), referencePath.get(0));
	for (int i = 1; i < referencePath.size(); i++) {
	emfValueProperty = emfValueProperty.value(referencePath.get(i));
	}

	valueProperty = emfValueProperty.value(indexedValueProperty);
	}
	}
	return valueProperty.value(emfFormsDatabinding.getValueProperty(indexReference.getTargetDMR(), object));
	}

	/**
	* {@inheritDoc}
	*
	* @see DomainModelReferenceConverterEMF#convertToListProperty(VDomainModelReference,EObject)
	*/
	@Override
	public IEMFListProperty convertToListProperty(VDomainModelReference domainModelReference, EObject object)
	throws DatabindingFailedException {
	if (domainModelReference == null) {
	throw new IllegalArgumentException("The given VDomainModelReference must not be null."); //$NON-NLS-1$
	}
	if (!VIndexDomainModelReference.class.isInstance(domainModelReference)) {
	throw new IllegalArgumentException(
	"DomainModelReference must be an instance of VIndexDomainModelReference."); //$NON-NLS-1$
	}

	final VIndexDomainModelReference indexReference = VIndexDomainModelReference.class.cast(domainModelReference);

	IEMFValueProperty valueProperty;

	if (indexReference.getPrefixDMR() != null) {
	final IEMFValueProperty prefixProperty = emfFormsDatabinding.getValueProperty(indexReference.getPrefixDMR(),
	object);
	valueProperty = new EMFValuePropertyDecorator(
	new EMFIndexedValuePropertyDelegator(getEditingDomain(object), indexReference.getIndex(),
	prefixProperty, prefixProperty.getStructuralFeature()),
	prefixProperty.getStructuralFeature());
	} else {
	if (indexReference.getDomainModelEFeature() == null) {
	throw new DatabindingFailedException(
	"The field domainModelEFeature of the given VIndexDomainModelReference must not be null."); //$NON-NLS-1$
	}

	checkListType(indexReference.getDomainModelEFeature());

	final List<EReference> referencePath = indexReference.getDomainModelEReferencePath();

	final IEMFValueProperty indexedValueProperty = new EMFValuePropertyDecorator(new EMFIndexedValueProperty(
	getEditingDomain(object),
	indexReference.getIndex(),
	indexReference.getDomainModelEFeature()), indexReference.getDomainModelEFeature());

	if (referencePath.isEmpty()) {
	valueProperty = indexedValueProperty;
	} else {
	IEMFValueProperty emfValueProperty = EMFEditProperties
	.value(getEditingDomain(object), referencePath.get(0));
	for (int i = 1; i < referencePath.size(); i++) {
	emfValueProperty = emfValueProperty.value(referencePath.get(i));
	}

	valueProperty = emfValueProperty.value(indexedValueProperty);
	}
	}

	return valueProperty.list(emfFormsDatabinding.getListProperty(indexReference.getTargetDMR(), object));
	}

	/**
	* Checks whether the given structural feature references a proper list to generate a value or list property.
	*
	* @param structuralFeature The feature to check
	* @throws IllegalListTypeException if the structural feature doesn't reference a proper list.
	*/
	private void checkListType(EStructuralFeature structuralFeature) throws IllegalListTypeException {
	if (!structuralFeature.isMany()) {
	throw new IllegalListTypeException(
	"The VIndexDomainModelReference's domainModelEFeature must reference a list."); //$NON-NLS-1$
	}
	if (!EReference.class.isInstance(structuralFeature)) {
	throw new IllegalListTypeException(
	"The VIndexDomainModelReference's domainModelEFeature must reference a list of EObjects."); //$NON-NLS-1$
	}
	}

	private EditingDomain getEditingDomain(EObject object) throws DatabindingFailedException {
	return AdapterFactoryEditingDomain.getEditingDomainFor(object);
	}

	/**
	* {@inheritDoc}
	*
	* @see org.eclipse.emfforms.spi.core.services.databinding.emf.DomainModelReferenceConverterEMF#getSetting(org.eclipse.emf.ecp.view.spi.model.VDomainModelReference,
	* org.eclipse.emf.ecore.EObject)
	*/
	@SuppressWarnings("unchecked")
	@Override
	public Setting getSetting(VDomainModelReference domainModelReference, EObject object)
	throws DatabindingFailedException {
	if (domainModelReference == null) {
	throw new IllegalArgumentException("The given VDomainModelReference must not be null."); //$NON-NLS-1$
	}
	if (!VIndexDomainModelReference.class.isInstance(domainModelReference)) {
	throw new IllegalArgumentException(
	"DomainModelReference must be an instance of VIndexDomainModelReference."); //$NON-NLS-1$
	}
	final VIndexDomainModelReference indexDMR = VIndexDomainModelReference.class
	.cast(domainModelReference);

	EList<EObject> eList;
	if (indexDMR.getPrefixDMR() == null) {
	if (indexDMR.getDomainModelEFeature() == null) {
	throw new DatabindingFailedException(
	"The field domainModelEFeature of the given VIndexDomainModelReference must not be null."); //$NON-NLS-1$
	}
	checkListType(indexDMR.getDomainModelEFeature());

	EObject currentObject = object;
	for (final EReference eReference : indexDMR.getDomainModelEReferencePath()) {
	currentObject = (EObject) currentObject.eGet(eReference);
	if (currentObject == null) {
	throw new DatabindingFailedException("The path is not fully resolved."); //$NON-NLS-1$
	}
	}
	eList = (EList<EObject>) currentObject.eGet(indexDMR.getDomainModelEFeature());
	} else {
	final Setting setting = emfFormsDatabinding.getSetting(indexDMR.getPrefixDMR(), object);
	eList = (EList<EObject>) setting.get(true);
	}
	if (eList.isEmpty()) {
	throw new DatabindingFailedException(
	"The list used by the index dmr mustr must not be empty."); //$NON-NLS-1$
	}
	final EObject eObject = eList.get(indexDMR.getIndex());
	return emfFormsDatabinding.getSetting(indexDMR.getTargetDMR(), eObject);
	}
	}