diff options
Diffstat (limited to 'sql/hive-thriftserver/src/main/java/org/apache/hive/service/cli/operation/GetTypeInfoOperation.java')
-rw-r--r-- | sql/hive-thriftserver/src/main/java/org/apache/hive/service/cli/operation/GetTypeInfoOperation.java | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/sql/hive-thriftserver/src/main/java/org/apache/hive/service/cli/operation/GetTypeInfoOperation.java b/sql/hive-thriftserver/src/main/java/org/apache/hive/service/cli/operation/GetTypeInfoOperation.java new file mode 100644 index 0000000000..2a0fec2771 --- /dev/null +++ b/sql/hive-thriftserver/src/main/java/org/apache/hive/service/cli/operation/GetTypeInfoOperation.java @@ -0,0 +1,142 @@ +/** + * 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.Type; +import org.apache.hive.service.cli.session.HiveSession; + +/** + * GetTypeInfoOperation. + * + */ +public class GetTypeInfoOperation extends MetadataOperation { + + private final static TableSchema RESULT_SET_SCHEMA = new TableSchema() + .addPrimitiveColumn("TYPE_NAME", Type.STRING_TYPE, + "Type name") + .addPrimitiveColumn("DATA_TYPE", Type.INT_TYPE, + "SQL data type from java.sql.Types") + .addPrimitiveColumn("PRECISION", Type.INT_TYPE, + "Maximum precision") + .addPrimitiveColumn("LITERAL_PREFIX", Type.STRING_TYPE, + "Prefix used to quote a literal (may be null)") + .addPrimitiveColumn("LITERAL_SUFFIX", Type.STRING_TYPE, + "Suffix used to quote a literal (may be null)") + .addPrimitiveColumn("CREATE_PARAMS", Type.STRING_TYPE, + "Parameters used in creating the type (may be null)") + .addPrimitiveColumn("NULLABLE", Type.SMALLINT_TYPE, + "Can you use NULL for this type") + .addPrimitiveColumn("CASE_SENSITIVE", Type.BOOLEAN_TYPE, + "Is it case sensitive") + .addPrimitiveColumn("SEARCHABLE", Type.SMALLINT_TYPE, + "Can you use \"WHERE\" based on this type") + .addPrimitiveColumn("UNSIGNED_ATTRIBUTE", Type.BOOLEAN_TYPE, + "Is it unsigned") + .addPrimitiveColumn("FIXED_PREC_SCALE", Type.BOOLEAN_TYPE, + "Can it be a money value") + .addPrimitiveColumn("AUTO_INCREMENT", Type.BOOLEAN_TYPE, + "Can it be used for an auto-increment value") + .addPrimitiveColumn("LOCAL_TYPE_NAME", Type.STRING_TYPE, + "Localized version of type name (may be null)") + .addPrimitiveColumn("MINIMUM_SCALE", Type.SMALLINT_TYPE, + "Minimum scale supported") + .addPrimitiveColumn("MAXIMUM_SCALE", Type.SMALLINT_TYPE, + "Maximum scale supported") + .addPrimitiveColumn("SQL_DATA_TYPE", Type.INT_TYPE, + "Unused") + .addPrimitiveColumn("SQL_DATETIME_SUB", Type.INT_TYPE, + "Unused") + .addPrimitiveColumn("NUM_PREC_RADIX", Type.INT_TYPE, + "Usually 2 or 10"); + + private final RowSet rowSet; + + protected GetTypeInfoOperation(HiveSession parentSession) { + super(parentSession, OperationType.GET_TYPE_INFO); + rowSet = RowSetFactory.create(RESULT_SET_SCHEMA, getProtocolVersion()); + } + + @Override + public void runInternal() throws HiveSQLException { + setState(OperationState.RUNNING); + if (isAuthV2Enabled()) { + authorizeMetaGets(HiveOperationType.GET_TYPEINFO, null); + } + try { + for (Type type : Type.values()) { + Object[] rowData = new Object[] { + type.getName(), // TYPE_NAME + type.toJavaSQLType(), // DATA_TYPE + type.getMaxPrecision(), // PRECISION + type.getLiteralPrefix(), // LITERAL_PREFIX + type.getLiteralSuffix(), // LITERAL_SUFFIX + type.getCreateParams(), // CREATE_PARAMS + type.getNullable(), // NULLABLE + type.isCaseSensitive(), // CASE_SENSITIVE + type.getSearchable(), // SEARCHABLE + type.isUnsignedAttribute(), // UNSIGNED_ATTRIBUTE + type.isFixedPrecScale(), // FIXED_PREC_SCALE + type.isAutoIncrement(), // AUTO_INCREMENT + type.getLocalizedName(), // LOCAL_TYPE_NAME + type.getMinimumScale(), // MINIMUM_SCALE + type.getMaximumScale(), // MAXIMUM_SCALE + null, // SQL_DATA_TYPE, unused + null, // SQL_DATETIME_SUB, unused + type.getNumPrecRadix() //NUM_PREC_RADIX + }; + rowSet.addRow(rowData); + } + 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); + } +} |