package FlexibleEncoding.Parquet;
/*
* adapt from parquet
*/
import java.io.IOException;
/**
* encodes boolean for the plain encoding: one bit at a time (0 = false)
*
* @author Julien Le Dem
*
*/
public class BooleanPlainValuesReader extends ValuesReader {
private static final Log LOG = Log.getLog(BooleanPlainValuesReader.class);
private ByteBitPackingValuesReader in = new ByteBitPackingValuesReader(1, Packer.LITTLE_ENDIAN);
/**
*
* {@inheritDoc}
* @see parquet.column.values.ValuesReader#readBoolean()
*/
@Override
public boolean readBoolean() {
return in.readInteger() == 0 ? false : true;
}
/**
* {@inheritDoc}
* @see parquet.column.values.ValuesReader#skipBoolean()
*/
@Override
public void skip() {
in.readInteger();
}
/**
* {@inheritDoc}
* @see parquet.column.values.ValuesReader#initFromPage(byte[], int)
*/
@Override
public void initFromPage(int valueCount, byte[] in, int offset) throws IOException {
if (Log.DEBUG) LOG.debug("init from page at offset "+ offset + " for length " + (in.length - offset));
this.in.initFromPage(valueCount, in, offset);
}
@Override
public int getNextOffset() {
return this.in.getNextOffset();
}
}