Package org.h2.command

Examples of org.h2.command.CommandInterface

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            int id = getNextId(TraceObject.SAVEPOINT);
            if (isDebugEnabled()) {
                debugCodeAssign("Savepoint", TraceObject.SAVEPOINT, id, "setSavepoint(" + quote(name) + ")");
            }
            checkClosed();
            CommandInterface set = prepareCommand("SAVEPOINT " + JdbcSavepoint.getName(name, 0), Integer.MAX_VALUE);
            set.executeUpdate();
            JdbcSavepoint savepoint = new JdbcSavepoint(this, 0, name, trace, id);
            return savepoint;
        } catch (Exception e) {
            throw logAndConvert(e);
        }
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            }
            checkClosed();
            closeOldResultSet();
            sql = conn.translateSQL(sql, escapeProcessing);
            synchronized (session) {
                CommandInterface command = conn.prepareCommand(sql, fetchSize);
                ResultInterface result;
                boolean scrollable = resultSetType != ResultSet.TYPE_FORWARD_ONLY;
                boolean updatable = resultSetConcurrency == ResultSet.CONCUR_UPDATABLE;
                setExecutingStatement(command);
                try {
                    result = command.executeQuery(maxRows, scrollable);
                } finally {
                    setExecutingStatement(null);
                }
                command.close();
                resultSet = new JdbcResultSet(conn, this, result, id, closedByResultSet, scrollable, updatable);
            }
            return resultSet;
        } catch (Exception e) {
            throw logAndConvert(e);
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    private int executeUpdateInternal(String sql) throws SQLException {
        checkClosedForWrite();
        try {
            closeOldResultSet();
            sql = conn.translateSQL(sql, escapeProcessing);
            CommandInterface command = conn.prepareCommand(sql, fetchSize);
            synchronized (session) {
                setExecutingStatement(command);
                try {
                    updateCount = command.executeUpdate();
                } finally {
                    setExecutingStatement(null);
                }
            }
            command.close();
            return updateCount;
        } finally {
            afterWriting();
        }
    }
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        int id = getNextId(TraceObject.RESULT_SET);
        checkClosedForWrite();
        try {
            closeOldResultSet();
            sql = conn.translateSQL(sql, escapeProcessing);
            CommandInterface command = conn.prepareCommand(sql, fetchSize);
            boolean returnsResultSet;
            synchronized (session) {
                setExecutingStatement(command);
                try {
                    if (command.isQuery()) {
                        returnsResultSet = true;
                        boolean scrollable = resultSetType != ResultSet.TYPE_FORWARD_ONLY;
                        boolean updatable = resultSetConcurrency == ResultSet.CONCUR_UPDATABLE;
                        ResultInterface result = command.executeQuery(maxRows, scrollable);
                        resultSet = new JdbcResultSet(conn, this, result, id, closedByResultSet, scrollable, updatable);
                    } else {
                        returnsResultSet = false;
                        updateCount = command.executeUpdate();
                    }
                } finally {
                    setExecutingStatement(null);
                }
            }
            command.close();
            return returnsResultSet;
        } finally {
            afterWriting();
        }
    }
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    public void cancel() throws SQLException {
        try {
            debugCodeCall("cancel");
            checkClosed();
            // executingCommand can be reset  by another thread
            CommandInterface c = executingCommand;
            try {
                if (c != null) {
                    c.cancel();
                }
            } finally {
                setExecutingStatement(null);
            }
        } catch (Exception e) {
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    public String getCatalog() throws SQLException {
        try {
            debugCodeCall("getCatalog");
            checkClosed();
            if (catalog == null) {
                CommandInterface cat = prepareCommand("CALL DATABASE()", Integer.MAX_VALUE);
                ResultInterface result = cat.executeQuery(0, false);
                result.next();
                catalog = result.currentRow()[0].getString();
                cat.close();
            }
            return catalog;
        } catch (Exception e) {
            throw logAndConvert(e);
        }
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            int id = getNextId(TraceObject.SAVEPOINT);
            if (isDebugEnabled()) {
                debugCodeAssign("Savepoint", TraceObject.SAVEPOINT, id, "setSavepoint()");
            }
            checkClosed();
            CommandInterface set = prepareCommand("SAVEPOINT " + JdbcSavepoint.getName(null, savepointId), Integer.MAX_VALUE);
            set.executeUpdate();
            JdbcSavepoint savepoint = new JdbcSavepoint(this, savepointId, null, trace, id);
            savepointId++;
            return savepoint;
        } catch (Exception e) {
            throw logAndConvert(e);
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            int id = getNextId(TraceObject.SAVEPOINT);
            if (isDebugEnabled()) {
                debugCodeAssign("Savepoint", TraceObject.SAVEPOINT, id, "setSavepoint(" + quote(name) + ")");
            }
            checkClosed();
            CommandInterface set = prepareCommand("SAVEPOINT " + JdbcSavepoint.getName(name, 0), Integer.MAX_VALUE);
            set.executeUpdate();
            JdbcSavepoint savepoint = new JdbcSavepoint(this, 0, name, trace, id);
            return savepoint;
        } catch (Exception e) {
            throw logAndConvert(e);
        }
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    protected void recreateSessionState() {
        if (sessionState != null && sessionState.size() > 0) {
            sessionStateUpdating = true;
            try {
                for (String sql : sessionState) {
                    CommandInterface ci = prepareCommand(sql, Integer.MAX_VALUE);
                    ci.executeUpdate();
                }
            } finally {
                sessionStateUpdating = false;
                sessionStateChanged = false;
            }
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        if (!sessionStateChanged || sessionStateUpdating) {
            return;
        }
        sessionStateChanged = false;
        sessionState = New.arrayList();
        CommandInterface ci = prepareCommand("SELECT * FROM INFORMATION_SCHEMA.SESSION_STATE", Integer.MAX_VALUE);
        ResultInterface result = ci.executeQuery(0, false);
        while (result.next()) {
            Value[] row = result.currentRow();
            sessionState.add(row[1].getString());
        }
    }
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