Examples of org.hsqldb.result.Result

org.hsqldb.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

    public synchronized void prepareCommit() {


        resultOut.setAsTransactionEndRequest(ResultConstants.PREPARECOMMIT,
                                             null);


        Result in = execute(resultOut);


        if (in.isError()) {
            throw Error.error(in);
        }
    }

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    public synchronized void commit(boolean chain) {


        resultOut.setAsTransactionEndRequest(ResultConstants.TX_COMMIT, null);


        Result in = execute(resultOut);


        if (in.isError()) {
            throw Error.error(in);
        }
    }

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    public synchronized void rollback(boolean chain) {


        resultOut.setAsTransactionEndRequest(ResultConstants.TX_ROLLBACK,
                                             null);


        Result in = execute(resultOut);


        if (in.isError()) {
            throw Error.error(in);
        }
    }

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    public synchronized void rollbackToSavepoint(String name) {


        resultOut.setAsTransactionEndRequest(
            ResultConstants.TX_SAVEPOINT_NAME_ROLLBACK, name);


        Result in = execute(resultOut);


        if (in.isError()) {
            throw Error.error(in);
        }
    }

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        }
    }


    public synchronized void savepoint(String name) {


        Result result = Result.newSetSavepointRequest(name);
        Result in     = execute(result);


        if (in.isError()) {
            throw Error.error(in);
        }
    }

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    public synchronized void releaseSavepoint(String name) {


        resultOut.setAsTransactionEndRequest(
            ResultConstants.TX_SAVEPOINT_NAME_RELEASE, name);


        Result in = execute(resultOut);


        if (in.isError()) {
            throw Error.error(in);
        }
    }

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     * reuse the HSQLClientConnection object with no further initialisation.
     *
     */
    public synchronized void resetSession() {


        Result login    = Result.newResetSessionRequest();
        Result resultIn = execute(login);


        if (resultIn.isError()) {
            isClosed = true;


            closeConnection();


            throw Error.error(resultIn);
        }


        sessionID  = resultIn.getSessionId();
        databaseID = resultIn.getDatabaseId();
    }

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        r.write(dataOutput, rowOut);
    }


    protected Result read() throws IOException, HsqlException {


        Result result = Result.newResult(dataInput, rowIn);


        result.readAdditionalResults(this, dataInput, rowIn);
        rowOut.setBuffer(mainBuffer);
        rowIn.resetRow(mainBuffer.length);


        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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org.hsqldb.Expression

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