Examples of org.hsqldb_voltpatches.result.Result

org.hsqldb_voltpatches.result.Result
The primary unit of communication between Connection, Server and Session objects. An HSQLDB Result object encapsulates all requests (such as to alter or query session settings, to allocate and execute statements, etc.) and all responses (such as exception indications, update counts, result sets and result set metadata). It also implements the HSQL wire protocol for comunicating all such requests and responses across the network. Uses a navigator for data. @author Campbell Boucher-Burnett (boucherb@users dot sourceforge.net) @author Fred Toussi (fredt@users dot sourceforge.net) @version 1.9.0 @since 1.9.0

        this.condition = condition;
    }


    public Result execute(Session session) {


        Result result;


        switch (type) {


            case StatementTypes.BEGIN_END : {
                initialiseVariables(session);


                result = executeBlock(session);


                break;
            }
            case StatementTypes.LOOP :
            case StatementTypes.WHILE :
            case StatementTypes.REPEAT : {
                result = executeLoop(session);


                break;
            }
            case StatementTypes.IF : {
                result = executeIf(session);


                break;
            }
            default :
                throw Error.runtimeError(ErrorCode.U_S0500, "");
        }


        if (result.isError()) {
            result.getException().setStatementType(group, type);
        }


        return result;
    }

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        return result;
    }


    private Result executeBlock(Session session) {


        Result result = Result.updateZeroResult;
        int    i      = 0;


        session.sessionContext.push();


        for (; i < statements.length; i++) {
            result = statements[i].execute(session);
            result = handleCondition(session, result);


            if (result.isError()) {
                break;
            }


            if (result.getType() == ResultConstants.VALUE) {
                break;
            }
        }


        if (result.getType() == ResultConstants.VALUE) {
            if (result.getErrorCode() == StatementTypes.LEAVE) {
                if (result.getMainString() == null) {
                    result = Result.updateZeroResult;
                } else if (label != null
                           && label.name.equals(result.getMainString())) {
                    result = Result.updateZeroResult;
                }
            }
        }

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                            result = Result.newPSMResult(StatementTypes.LEAVE,
                                                         null, null);
                            break;
                    }


                    Result actionResult = handler.statement.execute(session);


                    if (actionResult.isError()) {
                        result = actionResult;


                        handleCondition(session, result);
                    } else {
                        return result;

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        return result;
    }


    private Result executeLoop(Session session) {


        Result result = Result.updateZeroResult;


        while (true) {
            if (type == StatementTypes.WHILE) {
                result = condition.execute(session);


                if (result.isError()) {
                    break;
                }


                if (!Boolean.TRUE.equals(result.getValueObject())) {
                    result = Result.updateZeroResult;


                    break;
                }
            }


            for (int i = 0; i < statements.length; i++) {
                result = statements[i].execute(session);


                if (result.isError()) {
                    break;
                }


                if (result.getType() == ResultConstants.VALUE) {
                    break;
                }
            }


            if (result.isError()) {
                break;
            }


            if (result.getType() == ResultConstants.VALUE) {
                if (result.getErrorCode() == StatementTypes.ITERATE) {
                    if (result.getMainString() == null) {
                        continue;
                    }


                    if (label != null
                            && label.name.equals(result.getMainString())) {
                        continue;
                    }


                    break;
                }


                if (result.getErrorCode() == StatementTypes.LEAVE) {
                    if (result.getMainString() == null) {
                        result = Result.updateZeroResult;
                    }


                    if (label != null
                            && label.name.equals(result.getMainString())) {
                        result = Result.updateZeroResult;
                    }


                    break;
                }


                if (result.getErrorCode() == StatementTypes.RETURN) {
                    break;
                }
            }


            if (type == StatementTypes.REPEAT) {
                result = condition.execute(session);


                if (result.isError()) {
                    break;
                }


                if (Boolean.TRUE.equals(result.getValueObject())) {
                    result = Result.updateZeroResult;


                    break;
                }
            }

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        return result;
    }


    private Result executeIf(Session session) {


        Result  result  = Result.updateZeroResult;
        boolean execute = false;


        for (int i = 0; i < statements.length; i++) {
            if (statements[i].getType() == StatementTypes.CONDITION) {
                if (execute) {
                    break;
                }


                result = statements[i].execute(session);


                if (result.isError()) {
                    break;
                }


                Object value = result.getValueObject();


                execute = Boolean.TRUE.equals(value);


                i++;
            }


            result = Result.updateZeroResult;


            if (!execute) {
                continue;
            }


            result = statements[i].execute(session);


            if (result.isError()) {
                break;
            }


            if (result.getType() == ResultConstants.VALUE) {
                break;
            }
        }


        return result;

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    public char[] getChars(SessionInterface session, long position,
                           int length) {


        ResultLob resultOut = ResultLob.newLobGetCharsRequest(id, position,
            length);
        Result resultIn = session.execute(resultOut);


        if (resultIn.isError()) {
            throw resultIn.getException();
        }


        return ((ResultLob) resultIn).getCharArray();
    }

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    }


    public long length(SessionInterface session) {


        ResultLob resultOut = ResultLob.newLobGetLengthRequest(id);
        Result    resultIn  = session.execute(resultOut);


        if (resultIn.isError()) {
            throw resultIn.getException();
        }


        return ((ResultLob) resultIn).getBlockLength();
    }

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    public ClobData getClob(SessionInterface session, long position,
                            long length) {


        ResultLob resultOut = ResultLob.newLobGetRequest(id, position, length);
        Result    resultIn  = session.execute(resultOut);


        if (resultIn.isError()) {
            throw resultIn.getException();
        }


        return new ClobDataID(((ResultLob) resultIn).getLobID());
    }

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    public int setString(SessionInterface session, long pos, String str) {


        ResultLob resultOut = ResultLob.newLobSetCharsRequest(id, pos,
            str.toCharArray());
        Result resultIn = session.execute(resultOut);


        if (resultIn.isError()) {
            throw resultIn.getException();
        }


        return str.length();
    }

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            throw Error.error(ErrorCode.X_22001);
        }


        ResultLob resultOut = ResultLob.newLobSetCharsRequest(id, pos,
            str.substring(offset, len).toCharArray());
        Result resultIn = session.execute(resultOut);


        if (resultIn.isError()) {
            throw resultIn.getException();
        }


        return str.length();
    }

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Related Classes of org.hsqldb_voltpatches.result.Result

org.hsqldb_voltpatches.ColumnBase

org.hsqldb_voltpatches.Constraint

org.hsqldb_voltpatches.Database

org.hsqldb_voltpatches.dbinfo.DatabaseInformationFull

org.hsqldb_voltpatches.dbinfo.DatabaseInformationMain

org.hsqldb_voltpatches.FunctionSQLInvoked

org.hsqldb_voltpatches.HSQLInterface

org.hsqldb_voltpatches.jdbc.JDBCConnection

org.hsqldb_voltpatches.jdbc.JDBCPreparedStatement

org.hsqldb_voltpatches.jdbc.JDBCStatementBase

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