diff options
Diffstat (limited to 'sql/hive-thriftserver/src/main/java/org/apache/hive/service/cli/operation/GetCatalogsOperation.java')
-rw-r--r-- | sql/hive-thriftserver/src/main/java/org/apache/hive/service/cli/operation/GetCatalogsOperation.java | 81 |
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); + } +} |