1 files changed, 61 insertions, 0 deletions
diff --git a/bundles/org.eclipse.equinox.p2.engine/src/org/eclipse/equinox/prov/engine/Phase.java b/bundles/org.eclipse.equinox.p2.engine/src/org/eclipse/equinox/prov/engine/Phase.java
new file mode 100644
index 000000000..19729096f
--- /dev/null
+++ b/bundles/org.eclipse.equinox.p2.engine/src/org/eclipse/equinox/prov/engine/Phase.java
@@ -0,0 +1,61 @@
+/*******************************************************************************
+ * Copyright (c) 2007 IBM Corporation 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:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.equinox.prov.engine;
+
+import org.eclipse.core.runtime.IProgressMonitor;
+import org.eclipse.core.runtime.IStatus;
+import org.eclipse.equinox.internal.prov.engine.Messages;
+import org.eclipse.equinox.prov.core.helpers.MultiStatus;
+import org.eclipse.osgi.util.NLS;
+
+public abstract class Phase {
+	protected final String phaseId;
+	protected final int weight;
+	protected final String phaseName;
+
+	protected Phase(String phaseId, int weight, String phaseName) {
+		if (phaseId == null || phaseId.length() == 0) {
+			throw new IllegalArgumentException("Phase id must be set.");
+		}
+
+		if (weight <= 0) {
+			throw new IllegalArgumentException("Phase weight must be positive.");
+		}
+
+		if (phaseName == null || phaseName.length() == 0) {
+			throw new IllegalArgumentException("Phase name must be set.");
+		}
+
+		this.weight = weight;
+		this.phaseName = phaseName;
+		this.phaseId = phaseId;
+	}
+
+	public String toString() {
+		return "Phase: " + this.phaseName + " - " + this.weight; //$NON-NLS-1$ //$NON-NLS-2$
+	}
+
+	protected MultiStatus perform(EngineSession session, Profile profile, Operand[] deltas, IProgressMonitor monitor) {
+		MultiStatus status = new MultiStatus();
+		//			log.start(log.info(Messages2.Engine_Performing_Phase, this.phaseName));
+		perform(status, session, profile, deltas, monitor);
+		//			log.stop();
+		if (status.matches(IStatus.CANCEL)) {
+			status.setMessage(Messages.Engine_Operation_Canceled_By_User);
+		} else if (status.matches(IStatus.ERROR)) {
+			status.setMessage(NLS.bind(Messages.Engine_Error_During_Phase, this.phaseName));
+		}
+		return status;
+	}
+
+	protected abstract void perform(MultiStatus status, EngineSession session, Profile profile, Operand[] deltas, IProgressMonitor monitor);
+
+}
+\ No newline at end of file