Examples with ColumnType tech.tablesaw.api.ColumnType used on opensource projects

Example 1 with ColumnType

use of tech.tablesaw.api.ColumnType in project symja_android_library by axkr.

the class ASTDataset method getColumnValue.

private IExpr getColumnValue(int rowPosition, int columnPosition) {
    Column<?> column = fTable.column(columnPosition);
    ColumnType t = column.type();
    Object obj = fTable.get(rowPosition, columnPosition);
    if (t.equals(ColumnType.BOOLEAN)) {
        Boolean b = (Boolean) obj;
        if (b) {
            return S.True;
        } else {
            return S.False;
        }
    } else if (t.equals(ColumnType.SHORT)) {
        short sValue = (Short) obj;
        return F.ZZ(sValue);
    } else if (t.equals(ColumnType.INTEGER)) {
        int iValue = (Integer) obj;
        return F.ZZ(iValue);
    } else if (t.equals(ColumnType.LONG)) {
        long lValue = (Long) obj;
        return F.ZZ(lValue);
    } else if (t.equals(ColumnType.FLOAT)) {
        float fValue = (Float) obj;
        return F.num(fValue);
    } else if (t.equals(ColumnType.DOUBLE)) {
        double dValue = (Double) obj;
        return F.num(dValue);
    } else if (t.equals(ColumnType.STRING)) {
        return F.stringx((String) obj);
    } else if (t.equals(ColumnType.EXPR)) {
        return (IExpr) obj;
    // } else if (t.equals(ColumnType.SKIP)) {
    // ruleCache(cache, assoc, F.Rule(colName, F.Missing));
    }
    IExpr valueStr = F.stringx(obj.toString());
    return valueStr;
}

Example 2 with ColumnType

use of tech.tablesaw.api.ColumnType in project symja_android_library by axkr.

the class Summarizer method getAggregateFunctionMultimap.

private ArrayListMultimap<String, AggregateFunction<?, ?>> getAggregateFunctionMultimap() {
    ArrayListMultimap<String, AggregateFunction<?, ?>> reductionMultimap = ArrayListMultimap.create();
    for (String name : summarizedColumns) {
        Column<?> column = temp.column(name);
        ColumnType type = column.type();
        for (AggregateFunction<?, ?> reduction : reductions) {
            if (reduction.isCompatibleColumn(type)) {
                reductionMultimap.put(name, reduction);
            }
        }
    }
    if (reductionMultimap.isEmpty()) {
        throw new IllegalArgumentException("None of the aggregate functions provided apply to the summarized column type(s).");
    }
    return reductionMultimap;
}

Example 3 with ColumnType

use of tech.tablesaw.api.ColumnType in project symja_android_library by axkr.

the class ArgumentList method createEmptyDestinationColumns.

/**
 * @return an ordered list of new columns this analytic query will generate.
 */
List<Column<?>> createEmptyDestinationColumns(int rowCount) {
    List<Column<?>> newColumns = new ArrayList<>();
    for (String toColumn : newColumnNames) {
        FunctionCall<? extends FunctionMetaData> functionCall = Stream.of(aggregateFunctions.get(toColumn), numberingFunctions.get(toColumn)).filter(java.util.Objects::nonNull).findFirst().get();
        ColumnType type = functionCall.function.returnType();
        Column<?> resultColumn = type.create(toColumn);
        newColumns.add(resultColumn);
        for (int i = 0; i < rowCount; i++) {
            resultColumn.appendMissing();
        }
    }
    return newColumns;
}

Example 4 with ColumnType

use of tech.tablesaw.api.ColumnType in project symja_android_library by axkr.

the class CsvReader method getReaderAndColumnTypes.

/**
 * Determines column types if not provided by the user Reads all input into memory unless File was
 * provided
 */
private Pair<Reader, ReadOptions.ColumnTypeReadOptions> getReaderAndColumnTypes(Source source, CsvReadOptions options) throws IOException {
    ReadOptions.ColumnTypeReadOptions columnTypeReadOptions = options.columnTypeReadOptions();
    byte[] bytesCache = null;
    boolean need2ParseFile = !columnTypeReadOptions.hasColumnTypeForAllColumns() && (!options.header() || !columnTypeReadOptions.hasColumnTypeForAllColumnsIfHavingColumnNames());
    if (need2ParseFile) {
        Reader reader = source.createReader(null);
        if (source.file() == null) {
            String s = CharStreams.toString(reader);
            bytesCache = source.getCharset() != null ? s.getBytes(source.getCharset()) : s.getBytes();
            // create a new reader since we just exhausted the existing one
            reader = source.createReader(bytesCache);
        }
        ColumnType[] detectedColumnTypes = detectColumnTypes(reader, options);
        // for only header present)
        if (detectedColumnTypes.length > 0) {
            columnTypeReadOptions = ReadOptions.ColumnTypeReadOptions.of(detectedColumnTypes);
        }
    }
    return Pair.create(source.createReader(bytesCache), columnTypeReadOptions);
}

Example 5 with ColumnType

use of tech.tablesaw.api.ColumnType in project symja_android_library by axkr.

the class CsvWriter method writeValues.

private void writeValues(Table table, CsvWriteOptions options, int r, String[] entries, int c) {
    DateTimeFormatter dateFormatter = options.dateFormatter();
    DateTimeFormatter dateTimeFormatter = options.dateTimeFormatter();
    ColumnType columnType = table.column(c).type();
    if (dateFormatter != null && columnType.equals(ColumnType.LOCAL_DATE)) {
        DateColumn dc = (DateColumn) table.column(c);
        entries[c] = options.dateFormatter().format(dc.get(r));
    } else if (dateTimeFormatter != null && columnType.equals(ColumnType.LOCAL_DATE_TIME)) {
        DateTimeColumn dc = (DateTimeColumn) table.column(c);
        entries[c] = options.dateTimeFormatter().format(dc.get(r));
    } else {
        if (options.usePrintFormatters()) {
            entries[c] = table.getString(r, c);
        } else {
            entries[c] = table.getUnformatted(r, c);
        }
    }
}