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authorPhilip Langer2017-05-11 13:14:58 -0400
committerPhilip Langer2017-05-23 11:38:17 -0400
commit888d9a60c302d4519bf01f088d0c22b585cff675 (patch)
tree6804b1e7f841c3b9c446ce1bdf4454c960c4e121
parent47f29ed984d7c941aa33c035297fd0b56ca17b31 (diff)
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[516524] Use more efficient feature look-up in ReferenceUtil
ReferenceUtil could make use of an EClass.getFeatureID(feature) which returns -1 if the feature doesn't belong to the class. Only in that case do we need to try to look up the feature by name. Once we've computed the feature ID, we can use it directly to efficiently access the generated reflective methods. Bug: 516524 Change-Id: I6ff031ebc02dd10bf3b0d88c00f03f15c25cfb61 Signed-off-by: Philip Langer <planger@eclipsesource.com>
-rw-r--r--plugins/org.eclipse.emf.compare.tests/src/org/eclipse/emf/compare/tests/utils/MatchUtilFeatureContainsTest.java14
-rw-r--r--plugins/org.eclipse.emf.compare/src/org/eclipse/emf/compare/utils/ReferenceUtil.java58
2 files changed, 43 insertions, 29 deletions
diff --git a/plugins/org.eclipse.emf.compare.tests/src/org/eclipse/emf/compare/tests/utils/MatchUtilFeatureContainsTest.java b/plugins/org.eclipse.emf.compare.tests/src/org/eclipse/emf/compare/tests/utils/MatchUtilFeatureContainsTest.java
index f46559d4d..a905457db 100644
--- a/plugins/org.eclipse.emf.compare.tests/src/org/eclipse/emf/compare/tests/utils/MatchUtilFeatureContainsTest.java
+++ b/plugins/org.eclipse.emf.compare.tests/src/org/eclipse/emf/compare/tests/utils/MatchUtilFeatureContainsTest.java
@@ -1,5 +1,5 @@
/*******************************************************************************
- * Copyright (c) 2015 EclipseSource Muenchen GmbH.
+ * Copyright (c) 2015, 2017 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
@@ -7,6 +7,7 @@
*
* Contributors:
* Michael Borkowski - initial tests
+ * Philip Langer - bug 516524
*******************************************************************************/
package org.eclipse.emf.compare.tests.utils;
@@ -31,11 +32,13 @@ import org.junit.Test;
@SuppressWarnings({"boxing", "nls" })
public class MatchUtilFeatureContainsTest {
+ private static final int MOCK_FEATURE_ID = 1;
+
List<EObject> featureList;
InternalEObject value;
- EObject container;
+ InternalEObject container;
EClass eClass;
@@ -45,17 +48,20 @@ public class MatchUtilFeatureContainsTest {
public void setUp() {
EPackage ePackage = mock(EPackage.class);
- container = mock(EObject.class);
+ container = mock(InternalEObject.class);
+
feature = mock(EStructuralFeature.class);
+ when(feature.isMany()).thenReturn(true);
eClass = mock(EClass.class);
when(eClass.getEPackage()).thenReturn(ePackage);
+ when(eClass.getFeatureID(feature)).thenReturn(MOCK_FEATURE_ID);
when(container.eClass()).thenReturn(eClass);
when(feature.getEContainingClass()).thenReturn(eClass);
featureList = new LinkedList<EObject>();
- when(container.eGet(feature, false)).thenReturn(featureList);
+ when(container.eGet(MOCK_FEATURE_ID, false, true)).thenReturn(featureList);
value = mockInternalObject();
featureList.add(value);
diff --git a/plugins/org.eclipse.emf.compare/src/org/eclipse/emf/compare/utils/ReferenceUtil.java b/plugins/org.eclipse.emf.compare/src/org/eclipse/emf/compare/utils/ReferenceUtil.java
index 7fe6bd1b0..488b724a2 100644
--- a/plugins/org.eclipse.emf.compare/src/org/eclipse/emf/compare/utils/ReferenceUtil.java
+++ b/plugins/org.eclipse.emf.compare/src/org/eclipse/emf/compare/utils/ReferenceUtil.java
@@ -1,5 +1,5 @@
/*******************************************************************************
- * Copyright (c) 2012, 2014 Obeo.
+ * Copyright (c) 2012, 2017 Obeo 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
@@ -7,6 +7,7 @@
*
* Contributors:
* Obeo - initial API and implementation
+ * Philip Langer - bug 516524
*******************************************************************************/
package org.eclipse.emf.compare.utils;
@@ -21,6 +22,7 @@ import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.ecore.EcorePackage;
+import org.eclipse.emf.ecore.InternalEObject;
import org.eclipse.emf.ecore.util.EcoreUtil;
import org.eclipse.emf.ecore.util.ExtendedMetaData;
import org.eclipse.emf.ecore.util.FeatureMapUtil;
@@ -87,14 +89,8 @@ public final class ReferenceUtil {
* @return The value of the given {@code feature} for the given {@code object}.
*/
public static Object safeEGet(EObject object, EStructuralFeature feature) {
- final EClass clazz = object.eClass();
- // TODO profile. This "if" might be counter productive : accessing both packages is probably as long
- // as a direct lookup to the clazz.eGetEStructuralFeature...
- if (clazz.getEPackage() == feature.getEContainingClass().getEPackage()) {
- return object.eGet(feature, false);
- }
- // Assumes that the containing package is the same, let it fail otherwise
- return object.eGet(clazz.getEStructuralFeature(feature.getName()), false);
+ final int featureID = getFeatureID(feature, object.eClass());
+ return ((InternalEObject)object).eGet(featureID, false, true);
}
/**
@@ -109,14 +105,8 @@ public final class ReferenceUtil {
* @return whether the {@code feature} for the given {@code object} is set.
*/
public static boolean safeEIsSet(EObject object, EStructuralFeature feature) {
- final EClass clazz = object.eClass();
- // TODO profile. This "if" might be counter productive : accessing both packages is probably as long
- // as a direct lookup to the clazz.eGetEStructuralFeature...
- if (clazz.getEPackage() == feature.getEContainingClass().getEPackage()) {
- return object.eIsSet(feature);
- }
- // Assumes that the containing package is the same, let it fail otherwise
- return object.eIsSet(clazz.getEStructuralFeature(feature.getName()));
+ int featureID = getFeatureID(feature, object.eClass());
+ return ((InternalEObject)object).eIsSet(featureID);
}
/**
@@ -132,15 +122,33 @@ public final class ReferenceUtil {
* The value to set, can be <code>null</code>.
*/
public static void safeESet(EObject object, EStructuralFeature feature, Object newValue) {
- final EClass clazz = object.eClass();
- // TODO profile. This "if" might be counter productive : accessing both packages is probably as long
- // as a direct lookup to the clazz.eGetEStructuralFeature...
- if (clazz.getEPackage() == feature.getEContainingClass().getEPackage()) {
- object.eSet(feature, newValue);
- } else {
- // Assumes that the containing package is the same, let it fail otherwise
- object.eSet(clazz.getEStructuralFeature(feature.getName()), newValue);
+ int featureID = getFeatureID(feature, object.eClass());
+ ((InternalEObject)object).eSet(featureID, newValue);
+ }
+
+ /**
+ * Returns the ID of the given <code>feature</code> relative to the given <code>eClass</code>.
+ * <p>
+ * If the feature ID could not be found in <code>eClass</code> directly, this method will try find a
+ * feature in <code>eClass</code> with the same name as the given <code>feature</code> and return its
+ * feature ID. Otherwise, this method returns -1. , or -1 if the feature is not in this class.
+ * </p>
+ *
+ * @param feature
+ * The feature.
+ * @param eClass
+ * The class.
+ * @return The ID of the <code>feature</code> relative to <code>class</code>, or -1 if the feature or an
+ * equally named feature is not in <code>clazz</code>.
+ */
+ private static int getFeatureID(EStructuralFeature feature, final EClass eClass) {
+ int featureID = eClass.getFeatureID(feature);
+ if (featureID == -1) {
+ // We may have a different but equivalent EClass, so try find the feature with the same name and
+ // compute the feature ID for that.
+ featureID = eClass.getFeatureID(eClass.getEStructuralFeature(feature.getName()));
}
+ return featureID;
}
/**

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