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https://github.com/sqlitebrowser/sqlitebrowser.git
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cf631a0222
Make sure the updating of the database structure always happens in the main thread so it is in sync with the GUI updates. This way we know for sure that the list of tables has been completely updated before we try to (re-)select a table in the Browse Data tab after the DB structure changed. See issue #1701.
90 lines
2.4 KiB
C++
90 lines
2.4 KiB
C++
#ifndef RUNSQL_H
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#define RUNSQL_H
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#include <memory>
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#include <mutex>
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#include <condition_variable>
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#include <QThread>
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class DBBrowserDB;
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struct sqlite3;
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class RunSql : public QThread
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{
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Q_OBJECT
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void run() override;
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public:
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/**
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* @param db Reference to the database connection to execute the statements with
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* @param query The query to execute
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* @param execute_from_position The index of the first character to execute in the query parameter
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* @param execute_to_position The index of the last character to execute in the query parameter (see exact_execute_to_position)
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* @param interrupt_after_statements Set to true to stop execution after each statement until startNextStatement() is called. Set to false to execute all statements
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* in one go.
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*/
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RunSql(DBBrowserDB& db, QString query, int execute_from_position, int execute_to_position, bool interrupt_after_statements = false);
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~RunSql() override = default;
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enum StatementType
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{
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SelectStatement,
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AlterStatement,
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DropStatement,
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RollbackStatement,
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PragmaStatement,
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VacuumStatement,
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InsertStatement,
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UpdateStatement,
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DeleteStatement,
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CreateStatement,
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AttachStatement,
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DetachStatement,
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OtherStatement,
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};
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static StatementType getQueryType(const QString& query);
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void startNextStatement();
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void stop();
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signals:
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void statementErrored(QString message, int from_position, int to_position);
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void statementExecuted(QString message, int from_position, int to_position);
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void statementReturnsRows(QString query, int from_position, int to_position, qint64 time_in_ms);
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void structureUpdated();
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/**
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* This signal must be connected with a Qt::BlockingQueuedConnection in order to work as expected!
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*/
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void confirmSaveBeforePragmaOrVacuum();
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private:
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DBBrowserDB& db;
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std::shared_ptr<sqlite3> pDb;
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mutable std::mutex m;
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mutable std::condition_variable cv;
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bool may_continue_with_execution;
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bool interrupt_after_statements;
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QByteArray queries_left_to_execute;
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int execute_current_position;
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int execute_to_position;
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bool structure_updated;
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bool savepoint_created;
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bool was_dirty;
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bool modified;
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void stopExecution();
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bool executeNextStatement();
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void acquireDbAccess();
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void releaseDbAccess();
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};
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#endif
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