1 files changed, 107 insertions, 0 deletions
diff --git a/sql/hive-thriftserver/src/main/java/org/apache/hive/service/cli/OperationState.java b/sql/hive-thriftserver/src/main/java/org/apache/hive/service/cli/OperationState.java
new file mode 100644
index 0000000000..51ffb40369
--- /dev/null
+++ b/sql/hive-thriftserver/src/main/java/org/apache/hive/service/cli/OperationState.java
@@ -0,0 +1,107 @@
+/**
+ * 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.hive.service.cli;
+
+import org.apache.hive.service.cli.thrift.TOperationState;
+
+/**
+ * OperationState.
+ *
+ */
+public enum OperationState {
+  INITIALIZED(TOperationState.INITIALIZED_STATE, false),
+  RUNNING(TOperationState.RUNNING_STATE, false),
+  FINISHED(TOperationState.FINISHED_STATE, true),
+  CANCELED(TOperationState.CANCELED_STATE, true),
+  CLOSED(TOperationState.CLOSED_STATE, true),
+  ERROR(TOperationState.ERROR_STATE, true),
+  UNKNOWN(TOperationState.UKNOWN_STATE, false),
+  PENDING(TOperationState.PENDING_STATE, false);
+
+  private final TOperationState tOperationState;
+  private final boolean terminal;
+
+  OperationState(TOperationState tOperationState, boolean terminal) {
+    this.tOperationState = tOperationState;
+    this.terminal = terminal;
+  }
+
+  // must be sync with TOperationState in order
+  public static OperationState getOperationState(TOperationState tOperationState) {
+    return OperationState.values()[tOperationState.getValue()];
+  }
+
+  public static void validateTransition(OperationState oldState,
+      OperationState newState)
+          throws HiveSQLException {
+    switch (oldState) {
+    case INITIALIZED:
+      switch (newState) {
+      case PENDING:
+      case RUNNING:
+      case CANCELED:
+      case CLOSED:
+        return;
+      }
+      break;
+    case PENDING:
+      switch (newState) {
+      case RUNNING:
+      case FINISHED:
+      case CANCELED:
+      case ERROR:
+      case CLOSED:
+        return;
+      }
+      break;
+    case RUNNING:
+      switch (newState) {
+      case FINISHED:
+      case CANCELED:
+      case ERROR:
+      case CLOSED:
+        return;
+      }
+      break;
+    case FINISHED:
+    case CANCELED:
+    case ERROR:
+      if (OperationState.CLOSED.equals(newState)) {
+        return;
+      }
+    default:
+      // fall-through
+    }
+    throw new HiveSQLException("Illegal Operation state transition " +
+        "from " + oldState + " to " + newState);
+  }
+
+  public void validateTransition(OperationState newState)
+      throws HiveSQLException {
+    validateTransition(this, newState);
+  }
+
+  public TOperationState toTOperationState() {
+    return tOperationState;
+  }
+
+  public boolean isTerminal() {
+    return terminal;
+  }
+}