1 files changed, 54 insertions, 0 deletions
diff --git a/bundles/org.eclipse.equinox.p2.metadata/src/org/eclipse/equinox/p2/metadata/ITouchpointType.java b/bundles/org.eclipse.equinox.p2.metadata/src/org/eclipse/equinox/p2/metadata/ITouchpointType.java
new file mode 100644
index 000000000..02218f760
--- /dev/null
+++ b/bundles/org.eclipse.equinox.p2.metadata/src/org/eclipse/equinox/p2/metadata/ITouchpointType.java
@@ -0,0 +1,54 @@
+/******************************************************************************* 
+* Copyright (c) 2008, 2009 EclipseSource 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:
+*   EclipseSource - initial API and implementation
+******************************************************************************/
+package org.eclipse.equinox.p2.metadata;
+
+
+/**
+ * Identifies a particular touchpoint. A touchpoint is identified by an id 
+ * and a version.
+ * 
+ * @noimplement This interface is not intended to be implemented by clients.
+ * @noextend This interface is not intended to be extended by clients.
+ * @since 2.0
+ */
+public interface ITouchpointType {
+
+	/**
+	 * A touchpoint type indicating an undefined touchpoint type. Identity (==)
+	 * must be used to test for the <code>NONE</code> type.
+	 */
+	public static final ITouchpointType NONE = new ITouchpointType() {
+
+		public String getId() {
+			return "null"; //$NON-NLS-1$
+		}
+
+		public Version getVersion() {
+			return Version.emptyVersion;
+		}
+	};
+
+	public String getId();
+
+	public Version getVersion();
+
+	/**
+	 * Returns whether this TouchpointInstruction is equal to the given object.
+	 * 
+	 * This method returns <i>true</i> if:
+	 * <ul>
+	 *  <li> Both this object and the given object are of type ITouchpointType
+	 *  <li> The result of <b>getId()</b> on both objects are equal
+	 *  <li> The result of <b>getVersion()</b> on both objects are equal
+	 * </ul> 
+	 */
+	public boolean equals(Object obj);
+
+}
+\ No newline at end of file