Java DataRow类代码示例

import org.knime.core.data.DataRow; //导入依赖的package包/类
/**
 *
 */
protected ActiveLearnLoopEndNodeModel() {
    super(new PortType[] { BufferedDataTable.TYPE,
            BufferedDataTable.TYPE_OPTIONAL, },
            new PortType[] { BufferedDataTable.TYPE });

    m_isExecuting = false;
    m_isTerminated = false;

    // empty row map if no input data is present, yet.
    m_rowMap = new HashMap<RowKey, DataRow>();

    m_classModel = new ClassModel();

    m_curIterationIndex = 0;
}
 

import org.knime.core.data.DataRow; //导入依赖的package包/类
/**
 * {@inheritDoc}
 */
@Override
public Object getValueAt(final int row, final int col) {
    if (m_rows.size() == 0) { // this will probably not be called if,
        // but making sure anyway
        return null;
    }

    if (col == 0) {
        return getRowKeyOf(row);
    } else if (col == m_classColumnIndex) {
        return m_listener.m_classMap.get(getRowKeyOf(row));
    }

    final DataRow data = m_rows.get(row); // get the row
    return data.getCell(col - 1); // return the column (<-1> because
    // first column is RowID and is not
    // contained in data)
}
 

import org.knime.core.data.DataRow; //导入依赖的package包/类
/**
 * Reads the classes from the ground truth table and adds them to the class
 * map.
 *
 * @param inData
 * @throws InvalidSettingsException
 */
private void initializeClassMap(final BufferedDataTable[] inData)
        throws InvalidSettingsException {
    final int classColIdxLabeledTable = NodeUtils.autoColumnSelection(
            inData[LABELED_PORT].getDataTableSpec(),
            m_groundTruthColumnModel, StringValue.class, this.getClass());

    // initialize all classes map
    m_allClassesMap = new HashMap<>((int)inData[LABELED_PORT].size());

    for (final DataRow row : inData[LABELED_PORT]) {
        m_allClassesMap.put(row.getKey(),
                ((StringCell) row.getCell(classColIdxLabeledTable))
                        .getStringValue());
    }
}
 

import org.knime.core.data.DataRow; //导入依赖的package包/类
/**
 * Creates a CellFactory for the class column.
 *
 * @param colName
 *            the name of the class column
 * @return CellFactory for the class column.
 */
private CellFactory createCellFactory(final String colName) {
    return new CellFactory() {

        @Override
        public void setProgress(final int curRowNr, final int rowCount,
                final RowKey lastKey, final ExecutionMonitor exec) {
            exec.setProgress((double) curRowNr / rowCount);
        }

        @Override
        public DataColumnSpec[] getColumnSpecs() {
            return new DataColumnSpec[] {
                    new DataColumnSpecCreator(colName, StringCell.TYPE)
                            .createSpec() };
        }

        @Override
        public DataCell[] getCells(final DataRow row) {
            throw new IllegalStateException(
                    new IllegalAccessException("This shouldn't be called"));
        }
    };
}
 

import org.knime.core.data.DataRow; //导入依赖的package包/类
/**
 * {@inheritDoc} Variance based score.
 */
@Override
protected ColumnRearranger createResRearranger(final DataTableSpec inSpec)
        throws InvalidSettingsException {
    final ColumnRearranger rearranger = new ColumnRearranger(inSpec);
    final DataColumnSpec newColSpec =
            new DataColumnSpecCreator("Variance Score", DoubleCell.TYPE)
                    .createSpec();

    // utility object that performs the calculation
    rearranger.append(new SingleCellFactory(newColSpec) {
        final List<Integer> m_selectedIndicies =
                NodeTools.getIndicesFromFilter(inSpec, m_columnFilterModel,
                        DoubleValue.class, VarianceScorerNodeModel.class);

        @Override
        public DataCell getCell(final DataRow row) {
            return new DoubleCell(MathUtils.variance(
                    NodeTools.toDoubleArray(row, m_selectedIndicies)));
        }
    });
    return rearranger;
}
 

import org.knime.core.data.DataRow; //导入依赖的package包/类
private ColumnRearranger createResRearranger(final DataTableSpec inSpec) {
    final ColumnRearranger rearranger = new ColumnRearranger(inSpec);
    rearranger.append(new CellFactory() {

        @Override
        public void setProgress(final int curRowNr, final int rowCount,
                final RowKey lastKey, final ExecutionMonitor exec) {
            exec.setProgress((double) curRowNr / rowCount);

        }

        @Override
        public DataColumnSpec[] getColumnSpecs() {
            return new DataColumnSpec[] {
                    new DataColumnSpecCreator("Graph Density Score",
                            DoubleCell.TYPE).createSpec() };
        }

        @Override
        public DataCell[] getCells(final DataRow row) {
            return new DataCell[] { new DoubleCell(
                    m_dataPoints.get(row.getKey()).getDensity()) };
        }
    });
    return rearranger;
}
 

import org.knime.core.data.DataRow; //导入依赖的package包/类
@Override
public DataCell[] getCells(final DataRow row) {

    final NoveltyScores noveltyScores = m_model.scoreTestData(row);
    final double score = noveltyScores.getScores()[0] / m_normalizer;
    final double[] nullspaceCoordinates =
            noveltyScores.getCoordinates().getRow(0);

    final ArrayList<DataCell> cells = new ArrayList<DataCell>();
    if (m_appendNoveltyScore) {
        cells.add(new DoubleCell(score));
    }
    if (m_appendNullspaceCoordinates) {
        for (final double coord : nullspaceCoordinates) {
            cells.add(new DoubleCell(coord));
        }
    }

    if (cells.isEmpty()) {
        return new DataCell[] {};
    }

    return cells.toArray(new DataCell[cells.size()]);

}
 

import org.knime.core.data.DataRow; //导入依赖的package包/类
private double[] readDataRow(final DataRow row) {
    final double[] data = new double[row.getNumCells()];
    for (int i = 0; i < row.getNumCells(); i++) {
        final DataCell cell = row.getCell(i);
        if (cell.isMissing()) {
            throw new IllegalArgumentException(
                    "Missing values are not supported.");
        } else if (!cell.getType().isCompatible(DoubleValue.class)) {
            throw new IllegalArgumentException(
                    "Only numerical data types are currently supported.");
        } else {
            data[i] = ((DoubleValue) cell).getDoubleValue();
        }
    }
    return data;
}
 

import org.knime.core.data.DataRow; //导入依赖的package包/类
/**
 * Check if table contain JavaPairRDD object. Only for RddTables. Other
 * tables will throw a ClassCastException.
 * 
 * @param table
 *            <code>BufferedDataTable</code>
 * @throws IndexOutOfBoundsException
 *             If <code>table</code> contains more than one cell
 * @throws ClassCastException
 *             If <code>table</code> isn't a RddTable
 * @return
 */
public static Boolean isPairRDD(BufferedDataTable table) {
	String[] names = table.getSpec().getColumnNames();
	if (names.length != 1) {
		throw new IndexOutOfBoundsException(
				"table should contain only one cells");
	}
	CloseableRowIterator it = table.iterator();
	DataRow firstRow = it.next();
	try {
		RddCell rddCell = (RddCell) firstRow.getCell(0);
		return false;
	} catch (ClassCastException e) {
		PairRddCell pairRddCell = (PairRddCell) firstRow.getCell(0);
		return true;
	}
}
 

import org.knime.core.data.DataRow; //导入依赖的package包/类
/**
 * Check if table contains JavaRDDLike object
 * 
 * @param table
 *            <code>BufferedDataTable</code>
 * @return
 */
public static Boolean isRDDTable(BufferedDataTable table) {
	String[] names = table.getSpec().getColumnNames();
	if (names.length != 1) {
		// RDD table should contain just one column
		return false;
	}
	CloseableRowIterator it = table.iterator();
	DataRow firstRow = it.next();
	if (it.hasNext()) {
		// RDD table should contain just one row
		return false;
	}
	try {
		RddCell rddCell = (RddCell) firstRow.getCell(0);
		return true;
	} catch (Exception e) {
		try {
			PairRddCell pairRddCell = (PairRddCell) firstRow.getCell(0);
			return true;
		} catch (Exception ee) {
			return false;
		}
	}
}
 

import org.knime.core.data.DataRow; //导入依赖的package包/类
/**
 * Execute the snippet.
 * 
 * @param table
 *            the data table at the inport
 * @param flowVariableRepository
 *            the flow variables at the inport
 * @param exec
 *            the execution context to report progress
 * @return the table for the output
 * @throws InvalidSettingsException
 *             when settings are inconsistent with the table or the flow
 *             variables at the input
 * @throws CanceledExecutionException
 *             when execution is canceled by the user
 */
public BufferedDataTable execute(final BufferedDataTable table,
		final FlowVariableRepository flowVariableRepository,
		final ExecutionContext exec) throws CanceledExecutionException,
		InvalidSettingsException {
	OutColList outFields = m_fields.getOutColFields();
	if (outFields.size() > 0) {
		ColumnRearranger rearranger = createRearranger(
				table.getDataTableSpec(), flowVariableRepository,
				table.getRowCount());

		return exec.createColumnRearrangeTable(table, rearranger, exec);
	} else {
		CellFactory factory = new JavaSnippetCellFactory(this,
				table.getDataTableSpec(), flowVariableRepository,
				table.getRowCount());
		for (DataRow row : table) {
			factory.getCells(row);
		}
		return table;
	}
}
 

import org.knime.core.data.DataRow; //导入依赖的package包/类
/**
 * Creates JavaRDD from BufferedDataTable
 * 
 * @param data
 *            <code>BufferedDataTable</code> to parallelize
 * @param colIndices
 *            selected columns
 * @return <code>JavaRDD</code>
 */
@SuppressWarnings({ "rawtypes", "unchecked" })
private JavaRDD createRDD(BufferedDataTable data, int[] colIndices) {
	// make a copy of data
	ArrayList copyOfData = new ArrayList(data.getRowCount());
	CloseableRowIterator rowIt = data.iterator();
	while (rowIt.hasNext()) {
		DataRow nextRow = rowIt.next();
		copyOfData.add(getCellValue(nextRow.getCell(colIndices[0])));
	}

	// create sparkContext and parallelize collection
	JavaSparkContext sparkContext = SparkContexter.getSparkContext(m_master
			.getStringValue());
	return sparkContext.parallelize(copyOfData);
}
 

import org.knime.core.data.DataRow; //导入依赖的package包/类
/**
 * Creates JavaPairRDD from BufferedDataTable
 * 
 * @param data
 *            <code>BufferedDataTable</code> to parallelize
 * @param colIndices
 *            selected columns
 * @return <code>JavaPairRDD</code>
 */
@SuppressWarnings({ "rawtypes", "unchecked" })
private JavaPairRDD createPairRDD(BufferedDataTable data, int[] colIndices) {
	// make a copy of data
	ArrayList copyOfData = new ArrayList(data.getRowCount());
	CloseableRowIterator rowIt = data.iterator();
	while (rowIt.hasNext()) {
		DataRow nextRow = rowIt.next();
		// Scala Tuple2 as key-value pair
		copyOfData.add(new Tuple2(getCellValue(nextRow
				.getCell(colIndices[0])), getCellValue(nextRow
				.getCell(colIndices[1]))));
	}
	
	// create sparkContext and parallelize collection
	JavaSparkContext sparkContext = SparkContexter.getSparkContext(m_master
			.getStringValue());
	return JavaPairRDD.fromJavaRDD(sparkContext.parallelize(copyOfData));
}
 

import org.knime.core.data.DataRow; //导入依赖的package包/类
@Override
public void endElement(java.lang.String uri, java.lang.String localName, java.lang.String qName)
		throws SAXException
	{
	if(builder!=null)
		{
		DataRow row=new DefaultRow(RowKey.createRowKey(++rowOut),new IntCell(Integer.parseInt(builder.toString())));
		container.addRowToTable(row);
		exec.setProgress("ESearch "+(rowOut));
      		try {
			exec.checkCanceled();
		} catch (CanceledExecutionException e) {
			throw new SAXException(e);
		}
		}
	builder=null;
	}
 

import org.knime.core.data.DataRow; //导入依赖的package包/类
public  Mutation getMutation(DataRow row)
{
String ref="A";
String alt="A";

if(useRefAlt)
	{
	ref= StringCell.class.cast(row.getCell(this.refColumn)).getStringValue();
	alt= StringCell.class.cast(row.getCell(this.altColumn)).getStringValue();
	}

return new Mutation(
	new Position(
		StringCell.class.cast(row.getCell(this.chromColumn)).getStringValue(),
		IntCell.class.cast(row.getCell(this.positionColumn)).getIntValue()
		),
	ref, alt
	);
}