| /* |
| * 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. |
| */ |
| |
| #ifndef _IGNITE_ODBC_QUERY_QUERY |
| #define _IGNITE_ODBC_QUERY_QUERY |
| |
| #include <stdint.h> |
| |
| #include <map> |
| |
| #include "ignite/odbc/diagnostic/diagnosable_adapter.h" |
| #include "ignite/odbc/meta/column_meta.h" |
| #include "ignite/odbc/common_types.h" |
| #include "ignite/odbc/row.h" |
| |
| namespace ignite |
| { |
| namespace odbc |
| { |
| namespace query |
| { |
| /** Query type. */ |
| struct QueryType |
| { |
| enum Type |
| { |
| /** Column metadata query type. */ |
| COLUMN_METADATA, |
| |
| /** Data query type. */ |
| DATA, |
| |
| /** Batch query type. */ |
| BATCH, |
| |
| /** Streaming query type. */ |
| STREAMING, |
| |
| /** Foreign keys query type. */ |
| FOREIGN_KEYS, |
| |
| /** Primary keys query type. */ |
| PRIMARY_KEYS, |
| |
| /** Special columns query type. */ |
| SPECIAL_COLUMNS, |
| |
| /** Table metadata query type. */ |
| TABLE_METADATA, |
| |
| /** Type info query type. */ |
| TYPE_INFO, |
| |
| /** Internal query, that should be parsed by a driver itself. */ |
| INTERNAL |
| }; |
| }; |
| |
| /** |
| * Query. |
| */ |
| class Query |
| { |
| public: |
| /** |
| * Destructor. |
| */ |
| virtual ~Query() |
| { |
| // No-op. |
| } |
| |
| /** |
| * Execute query. |
| * |
| * @return True on success. |
| */ |
| virtual SqlResult::Type Execute() = 0; |
| |
| /** |
| * Fetch next result row to application buffers. |
| * |
| * @param columnBindings Application buffers to put data to. |
| * @return Operation result. |
| */ |
| virtual SqlResult::Type FetchNextRow(app::ColumnBindingMap& columnBindings) = 0; |
| |
| /** |
| * Get data of the specified column in the result set. |
| * |
| * @param columnIdx Column index. |
| * @param buffer Buffer to put column data to. |
| * @return Operation result. |
| */ |
| virtual SqlResult::Type GetColumn(uint16_t columnIdx, app::ApplicationDataBuffer& buffer) = 0; |
| |
| /** |
| * Close query. |
| * |
| * @return True on success. |
| */ |
| virtual SqlResult::Type Close() = 0; |
| |
| /** |
| * Get column metadata. |
| * |
| * @return Column metadata. |
| */ |
| virtual const meta::ColumnMetaVector* GetMeta() = 0; |
| |
| /** |
| * Check if data is available. |
| * |
| * @return True if data is available. |
| */ |
| virtual bool DataAvailable() const = 0; |
| |
| /** |
| * Get number of rows affected by the statement. |
| * |
| * @return Number of rows affected by the statement. |
| */ |
| virtual int64_t AffectedRows() const = 0; |
| |
| /** |
| * Move to the next result set. |
| * |
| * @return Operation result. |
| */ |
| virtual SqlResult::Type NextResultSet() = 0; |
| |
| /** |
| * Get query type. |
| * |
| * @return Query type. |
| */ |
| QueryType::Type GetType() const |
| { |
| return type; |
| } |
| |
| protected: |
| /** |
| * Constructor. |
| */ |
| Query(diagnostic::DiagnosableAdapter& diag, QueryType::Type type) : |
| diag(diag), |
| type(type) |
| { |
| // No-op. |
| } |
| |
| /** Diagnostics collector. */ |
| diagnostic::DiagnosableAdapter& diag; |
| |
| /** Query type. */ |
| QueryType::Type type; |
| }; |
| } |
| } |
| } |
| |
| #endif //_IGNITE_ODBC_QUERY_QUERY |