Mercurial > hg > orthanc-databases
annotate Framework/SQLite/SQLiteResult.cpp @ 522:c49136b34891 large-queries tip
use a prepared statement for InsertOrUpdateMetadata
| author | Alain Mazy <am@orthanc.team> |
|---|---|
| date | Fri, 05 Jul 2024 09:15:54 +0200 |
| parents | 54d518dcd74a |
| children |
| rev | line source |
|---|---|
| 0 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
|
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5 * Copyright (C) 2017-2023 Osimis S.A., Belgium |
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6 * Copyright (C) 2024-2024 Orthanc Team SRL, Belgium |
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7 * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
| 0 | 8 * |
| 9 * This program is free software: you can redistribute it and/or | |
| 10 * modify it under the terms of the GNU Affero General Public License | |
| 11 * as published by the Free Software Foundation, either version 3 of | |
| 12 * the License, or (at your option) any later version. | |
| 13 * | |
| 14 * This program is distributed in the hope that it will be useful, but | |
| 15 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 17 * Affero General Public License for more details. | |
| 18 * | |
| 19 * You should have received a copy of the GNU Affero General Public License | |
| 20 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 21 **/ | |
| 22 | |
| 23 | |
| 24 #include "SQLiteResult.h" | |
| 25 | |
| 26 #include "../Common/BinaryStringValue.h" | |
| 27 #include "../Common/Integer64Value.h" | |
| 28 #include "../Common/NullValue.h" | |
| 29 #include "../Common/Utf8StringValue.h" | |
| 30 | |
| 152 | 31 #include <OrthancException.h> |
| 0 | 32 |
| 33 namespace OrthancDatabases | |
| 34 { | |
| 35 SQLiteResult::SQLiteResult(SQLiteStatement& statement) : | |
| 36 statement_(statement) | |
| 37 { | |
| 38 if (statement_.GetObject().ColumnCount() < 0) | |
| 39 { | |
| 40 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 41 } | |
| 42 else | |
| 43 { | |
| 44 SetFieldsCount(statement_.GetObject().ColumnCount()); | |
| 45 } | |
| 46 | |
| 47 done_ = !statement_.GetObject().Step(); | |
| 48 FetchFields(); | |
| 49 } | |
| 50 | |
| 51 | |
| 52 IValue* SQLiteResult::FetchField(size_t index) | |
| 53 { | |
| 54 switch (statement_.GetObject().GetColumnType(index)) | |
| 55 { | |
| 56 case Orthanc::SQLite::COLUMN_TYPE_INTEGER: | |
| 57 return new Integer64Value(statement_.GetObject().ColumnInt64(index)); | |
| 58 | |
| 59 case Orthanc::SQLite::COLUMN_TYPE_TEXT: | |
| 60 return new Utf8StringValue(statement_.GetObject().ColumnString(index)); | |
| 61 | |
| 62 case Orthanc::SQLite::COLUMN_TYPE_BLOB: | |
| 63 return new BinaryStringValue(statement_.GetObject().ColumnString(index)); | |
| 64 | |
| 65 case Orthanc::SQLite::COLUMN_TYPE_NULL: | |
| 66 return new NullValue; | |
| 67 | |
| 68 case Orthanc::SQLite::COLUMN_TYPE_FLOAT: | |
| 69 default: | |
| 70 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 71 } | |
| 72 } | |
| 73 | |
| 74 | |
| 75 void SQLiteResult::Next() | |
| 76 { | |
| 77 if (done_) | |
| 78 { | |
| 79 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
| 80 } | |
| 81 else | |
| 82 { | |
| 83 done_ = !statement_.GetObject().Step(); | |
| 84 FetchFields(); | |
| 85 } | |
| 86 } | |
| 87 } |