OpenBISScreeningML.java

        final List<String> featureCodeList = getFeatureCodes(last);
        final Object[][][] result = new Object[3][][];
        if (featureVectors.isEmpty())
        {
            return result;
        }
        int numberOfRows = 0;
        for (FeatureVectorDataset fvds : featureVectors)
        {
            numberOfRows += fvds.getFeatureVectors().size();
        }
        result[0] = new Object[numberOfRows][featureCodeList.size()];
        result[1] = new Object[numberOfRows][13];
        int resultIdx = 0;
        for (FeatureVectorDataset fvds : featureVectors)
        {
            final FeatureVectorDatasetReference datasetRef = fvds.getDataset();
            for (FeatureVector f : fvds.getFeatureVectors())
            {
                arraycopy(f.getValues(), result[0][resultIdx]);
                final Object[] annotations =
                        new Object[]
                            { createPlateWellDescription(datasetRef.getPlate(), f),
                                    datasetRef.getPlate().getAugmentedCode(),
                                    datasetRef.getPlate().getPermId(),
                                    datasetRef.getPlate().tryGetSpaceCode(),
                                    datasetRef.getPlate().getPlateCode(),
                                    f.getWellPosition().getWellRow(),
                                    f.getWellPosition().getWellColumn(),
                                    datasetRef.getExperimentIdentifier().getAugmentedCode(),
                                    datasetRef.getExperimentIdentifier().getPermId(),
                                    datasetRef.getExperimentIdentifier().getSpaceCode(),
                                    datasetRef.getExperimentIdentifier().getProjectCode(),
                                    datasetRef.getExperimentIdentifier().getExperimentCode(),
                                    datasetRef.getDatasetCode(), };
                System.arraycopy(annotations, 0, result[1][resultIdx], 0, annotations.length);
                resultIdx++;
            }
        }
        result[2] = new Object[featureCodeList.size()][1];
        for (int i = 0; i < featureCodeList.size(); ++i)
        {
            result[2][i][0] = featureCodeList.get(i);
        }
        return result;
    }

    @SuppressWarnings("deprecation")
    private static List<String> getFeatureCodes(FeatureVectorDataset last)
    {
        return last.getFeatureNames();
    }

    /**
     * Returns the gene mapping for the given <var>plateCodes</var> in <code>[0]</code> and location
     * annotations in <code>[1]</code>.
     * <p>
     * One row in the matrix corresponds to one well.
     * <p>
     * Matlab example:
     * 
     * <pre>
     * % Get feature matrix for features FEATURE1, FEATURE2 and FEATURE for PLATECODE
     * genes = getGeneMappingForPlate('PLATECODE');
     * % Get the plate well location description of the 10th wells
     * loc2 = genes(2,10,1)
     * % Get the gene ids that are in the 10th well
     * geneIds = genes(1,10,:)
     * </pre>
     * 
     * @param platesCodes The augmented codes of the plates to get the mapping for
     * @return <code>{ gene ids, annotations per well }</code> where <code>gene ids</code> can be 0,
     *         1 or more gene ids. <code>annotations per location</code> contain:
     *         <p>
     *         <code>{ plate well description, plate augmented code, plate perm id,
     *         plate space code, plate code, row, column }</code>
     */
    public static Object[][][] getGeneMappingForPlates(String[] platesCodes)
    {
        checkLoggedIn();
        final List<PlateWellMaterialMapping> mappingList =
                openbis
                        .listPlateMaterialMapping(toPlates(platesCodes),
                                MaterialTypeIdentifier.GENE);
        int size = 0;
        for (PlateWellMaterialMapping mapping : mappingList)
        {
            size +=
                    mapping.getPlateGeometry().getNumberOfRows()
                            * mapping.getPlateGeometry().getNumberOfColumns();
        }
        final Object[][][] result = new Object[2][size][];
        int resultIdx = 0;
        for (PlateWellMaterialMapping mapping : mappingList)
        {
            for (int row = 1; row <= mapping.getPlateGeometry().getNumberOfRows(); ++row)
            {
                for (int col = 1; col <= mapping.getPlateGeometry().getNumberOfColumns(); ++col)
                {
                    final List<MaterialIdentifier> genes = mapping.getMaterialsForWell(row, col);
                    result[0][resultIdx] = new Object[genes.size()];
                    for (int i = 0; i < genes.size(); ++i)
                    {
                        result[0][resultIdx][i] = genes.get(i).getMaterialCode();
                    }
                    final PlateIdentifier plate = mapping.getPlateIdentifier();
                    result[1][resultIdx] =
                            new Object[]
                                { createPlateWellDescription(plate, row, col),
                                        plate.getAugmentedCode(), plate.getPermId(),
                                        plate.tryGetSpaceCode(), plate.getPlateCode(), row, col, };
                    ++resultIdx;
                }
            }
        }
        return result;
    }

    //
    // Helper methods
    //

    private static List<PlateIdentifier> toPlates(String[] augmentedPlateCodes)
    {
        final List<PlateIdentifier> result =
                new ArrayList<PlateIdentifier>(augmentedPlateCodes.length);
        for (String plateCode : augmentedPlateCodes)
        {
            result.add(PlateIdentifier.createFromAugmentedCode(plateCode));
        }
        return result;
    }

    private static void arraycopy(double[] src, Object[] dest)
    {
        for (int i = 0; i < dest.length; ++i)
        {
            dest[i] = src[i];
        }
    }

    private static String createPlateWellDescription(FeatureVectorWithDescription f)
    {
        return createPlateWellDescription(f.getDatasetWellReference().getPlate(), f
                .getWellPosition().getWellRow(), f.getWellPosition().getWellColumn());
    }

    private static String createPlateWellDescription(PlateIdentifier p, FeatureVector f)
    {
        return createPlateWellDescription(p, f.getWellPosition().getWellRow(), f.getWellPosition()
                .getWellColumn());
    }

    private static String createPlateWellDescription(PlateIdentifier p, int row, int col)
    {
        return p.getPlateCode() + ":" + translateRowNumberIntoLetterCode(row) + col;
    }

    /**
     * Translates a row number into letter code. Thus, 1 -> A, 2 -> B, 26 -> Z, 27 -> AA, 28 -> AB,
     * etc.
     */
    private static String translateRowNumberIntoLetterCode(int rowNumber)
    {
        int rowIndex = rowNumber - 1;
        String code = "";
        while (rowIndex >= 0)
        {
            code = (char) (rowIndex % 26 + 'A') + code;
            rowIndex = rowIndex / 26 - 1;
        }
        return code;
    }

    private static void checkLoggedIn()
    {
        if (openbis == null)
        {
            if (Login.OPENBIS_TOKEN_FILE.exists())
            {
                BufferedReader br = null;
                try
                {
                    br = new BufferedReader(new FileReader(Login.OPENBIS_TOKEN_FILE));
                    final String token = br.readLine();
                    br.close();
                    br = new BufferedReader(new FileReader(Login.OPENBIS_SERVER_URL_FILE));
                    final String serverUrl = br.readLine();
                    br.close();
                    br = null;
                    openbis = ScreeningOpenbisServiceFacadeFactory.tryCreate(token, serverUrl);
                    if (openbis == null)
                    {
                        throw new RuntimeException("Login failed.");
                    }
                    init();
                } catch (IOException ex)
                {
                    if (openbis == null)
                    {
                        throw new RuntimeException("Login failed.", ex);
                    }
                } finally
                {
                    if (br != null)
                    {
                        try
                        {
                            br.close();
                        } catch (IOException ex)
                        {
                            // Silence this.
                        }
                    }
                }
            }
            if (openbis == null)
            {
                throw new RuntimeException("Not logged in.");
            }
        }
    }
}