Branch for 2.0 Milestone M5

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@948800 13f79535-47bb-0310-9956-ffa450edef68

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diff --git a/sca-java-2.x/branches/sca-java-2.0-M5/modules/sca-api/src/main/java/org/oasisopen/sca/ServiceUnavailableException.java b/sca-java-2.x/branches/sca-java-2.0-M5/modules/sca-api/src/main/java/org/oasisopen/sca/ServiceUnavailableException.java
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--- /dev/null
+++ b/sca-java-2.x/branches/sca-java-2.0-M5/modules/sca-api/src/main/java/org/oasisopen/sca/ServiceUnavailableException.java
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+/*
+ * Copyright(C) OASIS(R) 2005,2010. All Rights Reserved.
+ * OASIS trademark, IPR and other policies apply.
+ */
+package org.oasisopen.sca;
+
+/**
+ * This exception signals problems in the interaction with remote
+ * services.
+ *
+ * These are exceptions that can be transient, so retrying is
+ * appropriate.  Any exception that is a ServiceRuntimeException
+ * that is not a ServiceUnavailableException is unlikely to be
+ * resolved by retrying the operation, since it most likely
+ * requires human intervention.
+ */
+public class ServiceUnavailableException extends ServiceRuntimeException {
+    /**
+     * Constructs a ServiceUnavailableException with no detail message. 
+     */
+    public ServiceUnavailableException() {
+        super();
+    }
+
+    /**
+     * Constructs a ServiceUnavailableException with the specified detail
+     * message. 
+     *
+     * @param     message the detail message
+     */
+    public ServiceUnavailableException(String message) {
+        super(message);
+    }
+
+    /**
+     * Constructs a ServiceUnavailableException with the specified detail
+     * message and cause.
+     *
+     * The detail message associated with <code>cause</code> is not
+     * automatically incorporated in this exception's detail message.
+     *
+     * @param     message the detail message
+     * @param     cause the cause, or null if the cause is nonexistent
+     *            or unknown
+     */
+    public ServiceUnavailableException(String message, Throwable cause) {
+        super(message, cause);
+    }
+ 
+    /**
+     * Constructs a ServiceUnavailableException with the specified cause and
+     * a detail message of <tt>(cause==null ? null : cause.toString())</tt>.
+     *
+     * @param     cause the cause, or null if the cause is nonexistent
+     *            or unknown
+     */
+    public ServiceUnavailableException(Throwable cause) {
+        super(cause);
+    }
+
+    private static final long serialVersionUID = 5750303470949048271L;
+}