public static XDDFNumericalDataSource fromDataSource()

in poi-ooxml/src/main/java/org/apache/poi/xddf/usermodel/chart/XDDFDataSourcesFactory.java [197:309]
94 lines of code
7 McCabe index (conditional complexity)

    public static XDDFNumericalDataSource<Double> fromDataSource(final CTNumDataSource valuesDS) {
        if (valuesDS == null) {
            return null;
        }
        if (valuesDS.getNumRef() != null && valuesDS.getNumRef().getNumCache() != null) {
            return new XDDFNumericalDataSource<Double>() {
                private final CTNumData values = (CTNumData) valuesDS.getNumRef().getNumCache().copy();
                private String formatCode = values.isSetFormatCode() ? values.getFormatCode() : null;

                @Override
                public String getFormatCode() {
                    return formatCode;
                }

                @Override
                public void setFormatCode(String formatCode) {
                    this.formatCode = formatCode;
                }

                @Override
                public boolean isCellRange() {
                    return true;
                }

                @Override
                public boolean isNumeric() {
                    return true;
                }

                @Override
                public boolean isReference() {
                    return true;
                }

                @Override
                public int getPointCount() {
                    return (int) values.getPtCount().getVal();
                }

                @Override
                public Double getPointAt(int index) {
                    return Double.valueOf(values.getPtArray(index).getV());
                }

                @Override
                public String getDataRangeReference() {
                    return valuesDS.getNumRef().getF();
                }

                @Override
                public int getColIndex() {
                    return 0;
                }
            };
        } else if (valuesDS.getNumLit() != null) {
            return new XDDFNumericalDataSource<Double>() {
                private final CTNumData values = (CTNumData) valuesDS.getNumLit().copy();
                private String formatCode = values.isSetFormatCode() ? values.getFormatCode() : null;

                @Override
                public String getFormatCode() {
                    return formatCode;
                }

                @Override
                public void setFormatCode(String formatCode) {
                    this.formatCode = formatCode;
                }

                @Override
                public boolean isCellRange() {
                    return false;
                }

                @Override
                public boolean isLiteral() {
                    return true;
                }

                @Override
                public boolean isNumeric() {
                    return true;
                }

                @Override
                public boolean isReference() {
                    return false;
                }

                @Override
                public int getPointCount() {
                    return (int) values.getPtCount().getVal();
                }

                @Override
                public Double getPointAt(int index) {
                    return Double.valueOf(values.getPtArray(index).getV());
                }

                @Override
                public String getDataRangeReference() {
                    return null;
                }

                @Override
                public int getColIndex() {
                    return 0;
                }
            };
        } else {
            return null; // in some weird cases the element is empty
        }
    }