X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.browsing.ui.common%2Fsrc%2Forg%2Fsimantics%2Fbrowsing%2Fui%2Fcommon%2Fproperty%2FPropertyComparable.java;fp=bundles%2Forg.simantics.browsing.ui.common%2Fsrc%2Forg%2Fsimantics%2Fbrowsing%2Fui%2Fcommon%2Fproperty%2FPropertyComparable.java;h=db64306544abc36cc052049d33b7e8eeb899646f;hp=0000000000000000000000000000000000000000;hb=969bd23cab98a79ca9101af33334000879fb60c5;hpb=866dba5cd5a3929bbeae85991796acb212338a08

diff --git a/bundles/org.simantics.browsing.ui.common/src/org/simantics/browsing/ui/common/property/PropertyComparable.java b/bundles/org.simantics.browsing.ui.common/src/org/simantics/browsing/ui/common/property/PropertyComparable.java
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index 000000000..db6430654
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+++ b/bundles/org.simantics.browsing.ui.common/src/org/simantics/browsing/ui/common/property/PropertyComparable.java
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+/*******************************************************************************
+ * Copyright (c) 2007, 2011 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * 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:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.browsing.ui.common.property;
+
+/**
+ * @author Tuukka Lehtonen
+ */
+public interface PropertyComparable {
+
+    /**
+     * @return a hash code calculated from the data parts that identify the
+     *         subject and the property, not the value of the property
+     */
+    int propertyHashCode();
+
+    /**
+     * Tells whether this property represents the exact same property of the
+     * same subject, regardless of the value of the property.
+     * 
+     * @param o another object (property)
+     * @return <code>true</code> if both represent the same property of the same
+     *         subject
+     */
+    boolean propertyEquals(Object o);
+
+}
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