1 files changed, 81 insertions, 0 deletions
diff --git a/sql/hive-thriftserver/src/main/java/org/apache/hive/service/cli/operation/GetCatalogsOperation.java b/sql/hive-thriftserver/src/main/java/org/apache/hive/service/cli/operation/GetCatalogsOperation.java
new file mode 100644
index 0000000000..8868ec18e0
--- /dev/null
+++ b/sql/hive-thriftserver/src/main/java/org/apache/hive/service/cli/operation/GetCatalogsOperation.java
@@ -0,0 +1,81 @@
+/**
+ * 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.operation;
+
+import org.apache.hadoop.hive.ql.security.authorization.plugin.HiveOperationType;
+import org.apache.hive.service.cli.FetchOrientation;
+import org.apache.hive.service.cli.HiveSQLException;
+import org.apache.hive.service.cli.OperationState;
+import org.apache.hive.service.cli.OperationType;
+import org.apache.hive.service.cli.RowSet;
+import org.apache.hive.service.cli.RowSetFactory;
+import org.apache.hive.service.cli.TableSchema;
+import org.apache.hive.service.cli.session.HiveSession;
+
+/**
+ * GetCatalogsOperation.
+ *
+ */
+public class GetCatalogsOperation extends MetadataOperation {
+  private static final TableSchema RESULT_SET_SCHEMA = new TableSchema()
+  .addStringColumn("TABLE_CAT", "Catalog name. NULL if not applicable.");
+
+  private final RowSet rowSet;
+
+  protected GetCatalogsOperation(HiveSession parentSession) {
+    super(parentSession, OperationType.GET_CATALOGS);
+    rowSet = RowSetFactory.create(RESULT_SET_SCHEMA, getProtocolVersion());
+  }
+
+  @Override
+  public void runInternal() throws HiveSQLException {
+    setState(OperationState.RUNNING);
+    try {
+      if (isAuthV2Enabled()) {
+        authorizeMetaGets(HiveOperationType.GET_CATALOGS, null);
+      }
+      setState(OperationState.FINISHED);
+    } catch (HiveSQLException e) {
+      setState(OperationState.ERROR);
+      throw e;
+    }
+
+  }
+
+  /* (non-Javadoc)
+   * @see org.apache.hive.service.cli.Operation#getResultSetSchema()
+   */
+  @Override
+  public TableSchema getResultSetSchema() throws HiveSQLException {
+    return RESULT_SET_SCHEMA;
+  }
+
+  /* (non-Javadoc)
+   * @see org.apache.hive.service.cli.Operation#getNextRowSet(org.apache.hive.service.cli.FetchOrientation, long)
+   */
+  @Override
+  public RowSet getNextRowSet(FetchOrientation orientation, long maxRows) throws HiveSQLException {
+    assertState(OperationState.FINISHED);
+    validateDefaultFetchOrientation(orientation);
+    if (orientation.equals(FetchOrientation.FETCH_FIRST)) {
+      rowSet.setStartOffset(0);
+    }
+    return rowSet.extractSubset((int)maxRows);
+  }
+}