C8Chunk.java

package water.fvec;

import water.*;

/**
 * The empty-compression function, where data is in 'long's.
 */
public class C8Chunk extends Chunk {
  protected static final long _NA = Long.MIN_VALUE;
  C8Chunk( byte[] bs ) { _mem=bs; _start = -1; _len = _mem.length>>3; }
  @Override protected final long at8_impl( int i ) {
    long res = UDP.get8(_mem,i<<3);
    if( res == _NA ) throw new IllegalArgumentException("at8 but value is missing");
    return res;
  }
  @Override protected final double atd_impl( int i ) {
    long res = UDP.get8(_mem,i<<3);
    return res == _NA?Double.NaN:res;
  }
  @Override protected final boolean isNA_impl( int i ) { return UDP.get8(_mem,i<<3)==_NA; }
  @Override boolean set_impl(int idx, long l) { return false; }
  @Override boolean set_impl(int i, double d) { return false; }
  @Override boolean set_impl(int i, float f ) { return false; }
  @Override boolean setNA_impl(int idx) { UDP.set8(_mem,(idx<<3),_NA); return true; }
  @Override boolean hasFloat() { return false; }
  @Override public AutoBuffer write(AutoBuffer bb) { return bb.putA1(_mem,_mem.length); }
  @Override public C8Chunk read(AutoBuffer bb) {
    _mem = bb.bufClose();
    _start = -1;
    _len = _mem.length>>3;
    assert _mem.length == _len<<3;
    return this;
  }
  @Override NewChunk inflate_impl(NewChunk nc) {
    nc.set_len(nc.set_sparseLen(0));
    for( int i=0; i< len(); i++ )
      if(isNA0(i))nc.addNA();
      else nc.addNum(at80(i),0);
    return nc;
  }
}