145 lines
3.8 KiB
C++
145 lines
3.8 KiB
C++
/**************************************************************************
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**
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** This file is part of Nut project.
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** https://github.com/HamedMasafi/Nut
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**
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** Nut is free software: you can redistribute it and/or modify
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** it under the terms of the GNU Lesser General Public License as published by
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** the Free Software Foundation, either version 3 of the License, or
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** (at your option) any later version.
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**
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** Nut is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU Lesser General Public License for more details.
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**
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** You should have received a copy of the GNU Lesser General Public License
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** along with Nut. If not, see <http://www.gnu.org/licenses/>.
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**
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**************************************************************************/
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#include "sqlservergenerator.h"
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#include "../table.h"
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#include "../tablemodel.h"
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#include <QPoint>
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#include <QRegularExpression>
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NUT_BEGIN_NAMESPACE
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SqlServerGenerator::SqlServerGenerator(Database *parent)
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: SqlGeneratorBase(parent)
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{
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}
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QString SqlServerGenerator::masterDatabaseName(QString databaseName)
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{
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return databaseName.replace(
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QRegularExpression("DATABASE\\=(\\w+)",
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QRegularExpression::CaseInsensitiveOption),
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"DATABASE=");
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}
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QString SqlServerGenerator::fieldType(FieldModel *field)
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{
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QString dbType;
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switch (field->type) {
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case QVariant::Bool:
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dbType = "BIT";
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break;
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case QVariant::ByteArray:
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dbType = "VARBINARY";
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if (field->length)
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dbType.append(" (" + QString::number(field->length) + ")");
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else
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dbType.append(" (MAX)");
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break;
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case QVariant::Date:
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dbType = "DATE";
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break;
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case QVariant::DateTime:
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dbType = "DATETIME";
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break;
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case QVariant::Time:
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dbType = "TIME";
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break;
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case QVariant::Double:
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dbType = "REAL";
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break;
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case QVariant::Int:
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dbType = "INT";
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if (field->isAutoIncrement)
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dbType += " IDENTITY(1,1)";
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break;
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case QVariant::Point:
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case QVariant::PointF:
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dbType = "GEOMETRY";
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break;
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case QVariant::String:
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if (field->length)
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dbType = QString("NVARCHAR(%1)").arg(field->length);
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else
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dbType = "NVARCHAR(MAX)";
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break;
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case QVariant::Uuid:
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dbType = "UNIQUEIDENTIFIER";
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break;
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default:
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Q_UNREACHABLE();
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dbType = "";
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}
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return dbType;
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}
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QString SqlServerGenerator::diff(FieldModel *oldField, FieldModel *newField)
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{
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QString sql = "";
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if (oldField && newField)
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if (*oldField == *newField)
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return QString::null;
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if (!newField) {
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sql = "DROP COLUMN " + oldField->name;
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} else {
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if (oldField)
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sql = "MODIFY COLUMN ";
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else
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sql = "ADD ";
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sql.append(fieldDeclare(newField));
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}
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return sql;
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}
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QString SqlServerGenerator::escapeValue(const QVariant &v) const
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{
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if (v.type() == QVariant::String || v.type() == QVariant::Char)
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return "N'" + v.toString() + "'";
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else if (v.type() == QVariant::Point) {
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QPoint pt = v.toPoint();
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return QString("geography::POINT(%1, %2, 4326)").arg(pt.x()).arg(
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pt.y());
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} else if (v.type() == QVariant::Point) {
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QPointF pt = v.toPointF();
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return QString("geography::POINT(%1, %2, 4326)").arg(pt.x()).arg(
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pt.y());
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}
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return SqlGeneratorBase::escapeValue(v);
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}
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void SqlServerGenerator::appendSkipTake(QString &sql, int skip, int take)
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{
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if (take != -1 && skip != -1)
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sql.append(QString(" OFFSET %1 ROWS FETCH NEXT %2 ROWS ONLY")
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.arg(skip).arg(take));
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}
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NUT_END_NAMESPACE
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