InstanceRefImpl.java

/**
 * <copyright>
 * </copyright>
 *
 * $Id$
 */
package tefkat.engine.runtime.impl;

import java.util.Arrays;
import java.util.List;

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

import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.InternalEObject;

import org.eclipse.emf.ecore.impl.ENotificationImpl;
import org.eclipse.emf.ecore.resource.Resource;

import tefkat.engine.runtime.Binding;
import tefkat.engine.runtime.Context;
import tefkat.engine.runtime.InstanceRef;
import tefkat.engine.runtime.NotGroundException;
import tefkat.engine.runtime.ResolutionException;
import tefkat.engine.runtime.RuntimePackage;

/**
 * <!-- begin-user-doc -->
 * An implementation of the model object '<em><b>Instance Ref</b></em>'.
 * <!-- end-user-doc -->
 * <p>
 * The following features are implemented:
 * <ul>
 *   <li>{@link tefkat.engine.runtime.impl.InstanceRefImpl#getObject <em>Object</em>}</li>
 * </ul>
 * </p>
 *
 * @generated
 */
public class InstanceRefImpl extends ExpressionImpl implements InstanceRef {
    /**
     * <!-- begin-user-doc -->
     * <!-- end-user-doc -->
     * @generated
     */
    public static final String copyright = "Copyright michael lawley 2004";

    /**
     * The cached value of the '{@link #getObject() <em>Object</em>}' reference.
     * <!-- begin-user-doc -->
     * <!-- end-user-doc -->
     * @see #getObject()
     * @generated
     * @ordered
     */
    protected EObject object = null;

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

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

    /**
     * <!-- begin-user-doc -->
     * <!-- end-user-doc -->
     * @generated
     */
    public EObject getObject() {
        if (object != null && object.eIsProxy()) {
            InternalEObject oldObject = (InternalEObject)object;
            object = eResolveProxy(oldObject);
            if (object != oldObject) {
                if (eNotificationRequired())
                    eNotify(new ENotificationImpl(this, Notification.RESOLVE, RuntimePackage.INSTANCE_REF__OBJECT, oldObject, object));
            }
        }
        return object;
    }

    /**
     * <!-- begin-user-doc -->
     * <!-- end-user-doc -->
     * @generated
     */
    public EObject basicGetObject() {
        return object;
    }

    /**
     * <!-- begin-user-doc -->
     * <!-- end-user-doc -->
     * @generated
     */
    public void setObject(EObject newObject) {
        EObject oldObject = object;
        object = newObject;
        if (eNotificationRequired())
            eNotify(new ENotificationImpl(this, Notification.SET, RuntimePackage.INSTANCE_REF__OBJECT, oldObject, object));
    }

    /**
     * <!-- begin-user-doc -->
     * <!-- end-user-doc -->
     * @generated
     */
    public Object eGet(int featureID, boolean resolve, boolean coreType) {
        switch (featureID) {
            case RuntimePackage.INSTANCE_REF__OBJECT:
                if (resolve) return getObject();
                return basicGetObject();
        }
        return super.eGet(featureID, resolve, coreType);
    }

    /**
     * <!-- begin-user-doc -->
     * <!-- end-user-doc -->
     * @generated
     */
    public void eSet(int featureID, Object newValue) {
        switch (featureID) {
            case RuntimePackage.INSTANCE_REF__OBJECT:
                setObject((EObject)newValue);
                return;
        }
        super.eSet(featureID, newValue);
    }

    /**
     * <!-- begin-user-doc -->
     * <!-- end-user-doc -->
     * @generated
     */
    public void eUnset(int featureID) {
        switch (featureID) {
            case RuntimePackage.INSTANCE_REF__OBJECT:
                setObject((EObject)null);
                return;
        }
        super.eUnset(featureID);
    }

    /**
     * <!-- begin-user-doc -->
     * <!-- end-user-doc -->
     * @generated
     */
    public boolean eIsSet(int featureID) {
        switch (featureID) {
            case RuntimePackage.INSTANCE_REF__OBJECT:
                return object != null;
        }
        return super.eIsSet(featureID);
    }

    public List eval(Context context, Binding binding) throws ResolutionException, NotGroundException {
        return Arrays.asList(new EObject[] {getObject()});
    }
    
    public String toString() {
        if (null == getObject()) {
            return "<null>";
        }
        final Resource resource = getObject().eResource();
        return '<' + resource.getURI().toString() + "#" + resource.getURIFragment(getObject()) + '>';
    }

} //InstanceRefImpl