ZBlankColumnParameter.java

package nom.tam.fits.compression.provider.param.quant;

/*
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 * nom.tam FITS library
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 * Copyright (C) 1996 - 2021 nom-tam-fits
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 * distribute this software, either in source code form or as a compiled
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import nom.tam.fits.compression.algorithm.quant.QuantizeOption;
import nom.tam.fits.compression.provider.param.base.CompressColumnParameter;
import nom.tam.fits.header.Compression;

public final class ZBlankColumnParameter extends CompressColumnParameter<int[], QuantizeOption> {

    public ZBlankColumnParameter(QuantizeOption quantizeOption) {
        super(Compression.ZBLANK_COLUMN, quantizeOption, int[].class);
    }

    private static boolean equals(Integer i1, Integer i2) {
        if (i1 == null) {
            return i2 == null;
        }
        return i1.equals(i2);
    }

    @Override
    public void getValueFromColumn(int index) {
        Integer bNull;
        if (this.original != null) {
            bNull = getOption().getOriginal().getBNull();
        } else {
            bNull = getOption().getBNull();
        }
        if (bNull == null) {
            int[] originalColumn = originalColumn();
            if (originalColumn != null) {
                bNull = originalColumn[index];
            }
        }
        if (bNull != null) {
            getOption().setBNull(bNull);
        }
    }

    @Override
    public void setValueInColumn(int index) {
        if (this.original != null && !equals(getOption().getBNull(), getOption().getOriginal().getBNull())) {
            initializedColumn()[index] = getOption().getBNull();
        }
    }
}