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Diffstat (limited to 'sql/hive-thriftserver/src/main/java/org/apache/hive/service/cli/operation/GetSchemasOperation.java')
-rw-r--r-- | sql/hive-thriftserver/src/main/java/org/apache/hive/service/cli/operation/GetSchemasOperation.java | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/sql/hive-thriftserver/src/main/java/org/apache/hive/service/cli/operation/GetSchemasOperation.java b/sql/hive-thriftserver/src/main/java/org/apache/hive/service/cli/operation/GetSchemasOperation.java new file mode 100644 index 0000000000..e56686abb7 --- /dev/null +++ b/sql/hive-thriftserver/src/main/java/org/apache/hive/service/cli/operation/GetSchemasOperation.java @@ -0,0 +1,104 @@ +/** + * 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 java.util.ArrayList; +import java.util.List; + +import org.apache.hadoop.hive.metastore.IMetaStoreClient; +import org.apache.hadoop.hive.ql.security.authorization.plugin.HiveAccessControlException; +import org.apache.hadoop.hive.ql.security.authorization.plugin.HiveAuthzContext; +import org.apache.hadoop.hive.ql.security.authorization.plugin.HiveAuthzPluginException; +import org.apache.hadoop.hive.ql.security.authorization.plugin.HiveOperationType; +import org.apache.hadoop.hive.ql.security.authorization.plugin.HivePrivilegeObject; +import org.apache.hadoop.hive.ql.session.SessionState; +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; + +/** + * GetSchemasOperation. + * + */ +public class GetSchemasOperation extends MetadataOperation { + private final String catalogName; + private final String schemaName; + + private static final TableSchema RESULT_SET_SCHEMA = new TableSchema() + .addStringColumn("TABLE_SCHEM", "Schema name.") + .addStringColumn("TABLE_CATALOG", "Catalog name."); + + private RowSet rowSet; + + protected GetSchemasOperation(HiveSession parentSession, + String catalogName, String schemaName) { + super(parentSession, OperationType.GET_SCHEMAS); + this.catalogName = catalogName; + this.schemaName = schemaName; + this.rowSet = RowSetFactory.create(RESULT_SET_SCHEMA, getProtocolVersion()); + } + + @Override + public void runInternal() throws HiveSQLException { + setState(OperationState.RUNNING); + if (isAuthV2Enabled()) { + String cmdStr = "catalog : " + catalogName + ", schemaPattern : " + schemaName; + authorizeMetaGets(HiveOperationType.GET_SCHEMAS, null, cmdStr); + } + try { + IMetaStoreClient metastoreClient = getParentSession().getMetaStoreClient(); + String schemaPattern = convertSchemaPattern(schemaName); + for (String dbName : metastoreClient.getDatabases(schemaPattern)) { + rowSet.addRow(new Object[] {dbName, DEFAULT_HIVE_CATALOG}); + } + setState(OperationState.FINISHED); + } catch (Exception e) { + setState(OperationState.ERROR); + throw new HiveSQLException(e); + } + } + + + /* (non-Javadoc) + * @see org.apache.hive.service.cli.Operation#getResultSetSchema() + */ + @Override + public TableSchema getResultSetSchema() throws HiveSQLException { + assertState(OperationState.FINISHED); + 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); + } +} |