Package org.lealone.command

Examples of org.lealone.command.CommandInterface

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                // database setting are only used when opening the database
                continue;
            }
            String value = ci.getProperty(setting);
            try {
                CommandInterface command = session.prepareLocal("SET " + Parser.quoteIdentifier(setting) + " " + value);
                command.executeUpdate();
            } catch (DbException e) {
                if (!ignoreUnknownSetting) {
                    session.close();
                    throw e;
                }
            }
        }
        if (init != null) {
            try {
                CommandInterface command = session.prepareCommand(init, Integer.MAX_VALUE);
                command.executeUpdate();
            } catch (DbException e) {
                if (!ignoreUnknownSetting) {
                    session.close();
                    throw e;
                }
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        int size = commands.size();
        List<Future<ResultInterface>> futures = New.arrayList(size);
        List<ResultInterface> results = New.arrayList(size);
        for (int i = 0; i < size; i++) {
            final CommandInterface c = commands.get(i);
            futures.add(pool.submit(new Callable<ResultInterface>() {
                public ResultInterface call() throws Exception {
                    return c.executeQuery(maxRows, scrollable);
                }
            }));
        }
        try {
            for (int i = 0; i < size; i++) {
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        return new HBaseMergedResult(results, newSelect, select);
    }

    public static int executeUpdate(List<CommandInterface> commands) {
        if (commands.size() == 1) {
            CommandInterface c = commands.get(0);
            return c.executeUpdate();
        }
        int updateCount = 0;
        int size = commands.size();
        List<Future<Integer>> futures = New.arrayList(size);
        for (int i = 0; i < size; i++) {
            final CommandInterface c = commands.get(i);
            futures.add(pool.submit(new Callable<Integer>() {
                public Integer call() throws Exception {
                    return c.executeUpdate();
                }
            }));
        }
        try {
            for (int i = 0; i < size; i++) {
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        List<CommandRemote> commands = sqlRoutingInfo.remoteCommands;
        int size = commands.size() + 1;
        List<Future<Integer>> futures = New.arrayList(size);
        futures.add(pool.submit(call));
        for (int i = 0; i < size - 1; i++) {
            final CommandInterface c = commands.get(i);
            futures.add(pool.submit(new Callable<Integer>() {
                public Integer call() throws Exception {
                    return c.executeUpdate();
                }
            }));
        }
        try {
            for (int i = 0; i < size; i++) {
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            }
            synchronized (session) {
                checkClosed();
                closeOldResultSet();
                sql = JdbcConnection.translateSQL(sql, escapeProcessing);
                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(); //关闭结果集时再关闭
                resultSet = new JdbcResultSet(conn, this, result, id, closedByResultSet, scrollable, updatable);
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    private int executeUpdateInternal(String sql) throws SQLException {
        checkClosedForWrite();
        try {
            closeOldResultSet();
            sql = JdbcConnection.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 = JdbcConnection.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);
                }
            }
            if (returnsResultSet)
                resultSet.setCommand(command);
            else
                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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            if (table.isColumnsModified()) {
                table.setColumnsModified(false);
                SessionInterface si = SessionRemotePool.getMasterSessionRemote(session.getOriginalProperties());
                for (Column c : alterColumns) {
                    CommandInterface ci = si.prepareCommand(alterTable + c.getCreateSQL(true), 1);
                    ci.executeUpdate();
                }
            }
            if (isTopTransaction)
                session.commit(false);
            return updateCount;
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    }

    private void checkClusterDisableAutoCommit(String serverList) {
        if (autoCommit && transferList.size() > 1) {
            setAutoCommitSend(false);
            CommandInterface c = prepareCommand("SET CLUSTER " + serverList, Integer.MAX_VALUE);
            // this will set autoCommit to false
            c.executeUpdate();
            // so we need to switch it on
            autoCommit = true;
            cluster = true;
        }
    }
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Related Classes of org.lealone.command.CommandInterface

  • org.lealone.engine.DatabaseEngineBase
  • org.lealone.engine.SessionRemote
  • org.lealone.engine.SessionWithState
  • org.lealone.hbase.command.CommandParallel
  • org.lealone.hbase.command.dml.InsertOrMergeSupport
  • org.lealone.jdbc.JdbcConnection
  • org.lealone.jdbc.JdbcStatement
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