URI uri = URI.createFileURI("tmp/dir");
Resource resource = new XMIResourceFactoryImpl().createResource(uri);
resource.getContents().add(myEntity);
try {
     resource.save(Collections.EMPTY_MAP);
} catch (IOException e) {
     System.out.println(e.getMessage());
}

ModelPackageImpl.init();

package org.domain.model.impl;

import org.domain.model.Komponente;
import org.domain.model.ModelPackage;

import org.eclipse.emf.common.notify.Notification;

import org.eclipse.emf.ecore.EClass;

import org.eclipse.emf.ecore.impl.ENotificationImpl;
import org.eclipse.emf.ecore.impl.EObjectImpl;

/**
 * <!-- begin-user-doc -->
 * An implementation of the model object '<em><b>Komponente</b></em>'.
 * <!-- end-user-doc -->
 * <p>
 * The following features are implemented:
 * <ul>
 *   <li>{@link org.domain.model.impl.KomponenteImpl#getName <em>Name</em>}</li>
 *   <li>{@link org.domain.model.impl.KomponenteImpl#getIndex <em>Index</em>}</li>
 * </ul>
 * </p>
 *
 * @generated
 */
public abstract class KomponenteImpl extends EObjectImpl implements Komponente {
	/**
	 * The default value of the '{@link #getName() <em>Name</em>}' attribute.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getName()
	 * @generated
	 * @ordered
	 */
	protected static final String NAME_EDEFAULT = null;

	/**
	 * The cached value of the '{@link #getName() <em>Name</em>}' attribute.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getName()
	 * @generated
	 * @ordered
	 */
	protected String name = NAME_EDEFAULT;

	/**
	 * The default value of the '{@link #getIndex() <em>Index</em>}' attribute.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getIndex()
	 * @generated
	 * @ordered
	 */
	protected static final int INDEX_EDEFAULT = 0;

	/**
	 * The cached value of the '{@link #getIndex() <em>Index</em>}' attribute.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getIndex()
	 * @generated
	 * @ordered
	 */
	protected int index = INDEX_EDEFAULT;

	/**
	 * This is true if the Index attribute has been set.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 * @ordered
	 */
	protected boolean indexESet;

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	protected KomponenteImpl() {
		super();
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	protected EClass eStaticClass() {
		return ModelPackage.Literals.KOMPONENTE;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public String getName() {
		return name;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setName(String newName) {
		String oldName = name;
		name = newName;
		if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, ModelPackage.KOMPONENTE__NAME, oldName, name));
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public int getIndex() {
		return index;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setIndex(int newIndex) {
		int oldIndex = index;
		index = newIndex;
		boolean oldIndexESet = indexESet;
		indexESet = true;
		if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, ModelPackage.KOMPONENTE__INDEX, oldIndex, index, !oldIndexESet));
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void unsetIndex() {
		int oldIndex = index;
		boolean oldIndexESet = indexESet;
		index = INDEX_EDEFAULT;
		indexESet = false;
		if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.UNSET, ModelPackage.KOMPONENTE__INDEX, oldIndex, INDEX_EDEFAULT, oldIndexESet));
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public boolean isSetIndex() {
		return indexESet;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public Object eGet(int featureID, boolean resolve, boolean coreType) {
		switch (featureID) {
			case ModelPackage.KOMPONENTE__NAME:
				return getName();
			case ModelPackage.KOMPONENTE__INDEX:
				return new Integer(getIndex());
		}
		return super.eGet(featureID, resolve, coreType);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public void eSet(int featureID, Object newValue) {
		switch (featureID) {
			case ModelPackage.KOMPONENTE__NAME:
				setName((String)newValue);
				return;
			case ModelPackage.KOMPONENTE__INDEX:
				setIndex(((Integer)newValue).intValue());
				return;
		}
		super.eSet(featureID, newValue);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public void eUnset(int featureID) {
		switch (featureID) {
			case ModelPackage.KOMPONENTE__NAME:
				setName(NAME_EDEFAULT);
				return;
			case ModelPackage.KOMPONENTE__INDEX:
				unsetIndex();
				return;
		}
		super.eUnset(featureID);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public boolean eIsSet(int featureID) {
		switch (featureID) {
			case ModelPackage.KOMPONENTE__NAME:
				return NAME_EDEFAULT == null ? name != null : !NAME_EDEFAULT.equals(name);
			case ModelPackage.KOMPONENTE__INDEX:
				return isSetIndex();
		}
		return super.eIsSet(featureID);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public String toString() {
		if (eIsProxy()) return super.toString();

		StringBuffer result = new StringBuffer(super.toString());
		result.append(" (name: ");
		result.append(name);
		result.append(", index: ");
		if (indexESet) result.append(index); else result.append("<unset>");
		result.append(')');
		return result.toString();
	}

} //KomponenteImpl