1 files changed, 167 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/work/impl/WorkItem.java b/sca-java-2.x/tags/2.0.1-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/work/impl/WorkItem.java
new file mode 100644
index 0000000000..0fc104d0fc
--- /dev/null
+++ b/sca-java-2.x/tags/2.0.1-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/work/impl/WorkItem.java
@@ -0,0 +1,167 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.work.impl;
+
+import org.apache.tuscany.sca.work.WorkSchedulerException;
+
+/**
+ * An identity based immutable implementation of the <code>WorkItem</code>
+ * interface.
+ *
+ * @version $Rev$ $Date$
+ */
+class WorkItem {
+    
+    // Id scoped for the VM
+    private String id;
+
+    // Status
+    private int status = -1;
+
+    // Result
+    private Work<?> result;
+    
+    // Original work
+    private Work<?> originalWork;
+
+    // Exception
+    private WorkSchedulerException exception;
+
+    /**
+     * Instantiates an id for this item.
+     *
+     * @param id of this work event.
+     */
+    protected WorkItem(final String id, final Work<?> orginalWork) {
+        this.id = id;
+        this.originalWork = orginalWork;
+    }
+
+    /**
+     * Returns the id.
+     *
+     * @return Id of this item.
+     */
+    public String getId() {
+        return id;
+    }
+
+    /**
+     * Returns the original work.
+     *
+     * @return Original work.
+     */
+    public Work<?> getOriginalWork() {
+        return originalWork;
+    }
+
+    /**
+     * Returns the work result if the work completed.
+     *
+     * @return Work.
+     * @throws WorkException If the work completed with an exception.
+     */
+    public Work<?> getResult() {
+        return result;
+    }
+
+    /**
+     * Sets the result.
+     *
+     * @param result Result.
+     */
+    protected void setResult(final Work<?> result) {
+        this.result = result;
+    }
+
+    /**
+     * Returns the exception if work completed with an exception.
+     *
+     * @return Work exception.
+     */
+    protected WorkSchedulerException getException() {
+        return exception;
+    }
+
+    /**
+     * Sets the exception.
+     *
+     * @param exception Exception.
+     */
+    protected void setException(final WorkSchedulerException exception) {
+        this.exception = exception;
+    }
+
+    /**
+     * Returns the work type based on whether the work was accepted, started,
+     * rejected or completed.
+     *
+     * @return Work status.
+     */
+    public int getStatus() {
+        return status;
+    }
+
+    /**
+     * Sets the status.
+     *
+     * @param status Status.
+     */
+    protected void setStatus(final int status) {
+        this.status = status;
+    }
+
+    /**
+     * @see Object#hashCode() 
+     */
+    @Override
+    public int hashCode() {
+        return id.hashCode();
+    }
+
+    /**
+     * Indicates whether some other object is "equal to" this one.
+     *
+     * @param obj Object to be compared.
+     * @return true if this object is the same as the obj argument; false
+     *         otherwise..
+     */
+    @Override
+    public boolean equals(final Object obj) {
+        return (obj != null) && (obj.getClass() == WorkItem.class) && ((WorkItem) obj).id.equals(id);
+    }
+
+    /**
+     * Compares this object with the specified object for order. Returns a
+     * negative integer, zero, or a positive integer as this object is less
+     * than, equal to, or greater than the specified object.
+     *
+     * @param o Object to be compared.
+     * @return A negative integer, zero, or a positive integer as this object
+     *         is less than, equal to, or greater than the specified object.
+     * @throws ClassCastException needs better documentation.
+     */
+    public int compareTo(final Object o) {
+        if (o.getClass() != WorkItem.class) {
+            throw new ClassCastException(o.getClass().getName());
+        } else {
+            return ((WorkItem) o).getId().compareTo(getId());
+        }
+    }
+}