package water.fvec;
import water.parser.BufferedString;
import water.util.UnsafeUtils;
import java.util.UUID;
/**
* The constant 'double' column.
*/
public class C0DChunk extends Chunk {
private static final int _OFF=8+4;
private double _con;
public C0DChunk(double con, int len) {
_start = -1;
set_len(len);
_mem=new byte[_OFF];
_con = con;
UnsafeUtils.set8d(_mem, 0, con);
UnsafeUtils.set4(_mem,8,len);
}
@Override public boolean hasFloat() { return true; }
@Override protected final long at8_impl( int i ) {
if( Double.isNaN(_con) ) throw new IllegalArgumentException("at8_abs but value is missing");
return (long)_con; // Possible silent truncation
}
long at16h_impl(int idx) { throw wrongType(UUID.class, Object.class); }
@Override protected final double atd_impl( int i ) {return _con;}
@Override protected final boolean isNA_impl( int i ) { return Double.isNaN(_con); }
@Override boolean set_impl(int idx, long l) { return l==_con; }
@Override boolean set_impl(int i, double d) { return d==_con; }
@Override boolean set_impl(int i, float f ) { return f==_con; }
@Override boolean setNA_impl(int i) { return Double.isNaN(_con); }
@Override double min() { return _con; }
@Override double max() { return _con; }
BufferedString atStr_impl(BufferedString bStr, int idx) {
if(Double.isNaN(_con)) return null; // speciall all missing case
return super.atStr_impl(bStr,idx);
}
// 3.3333333e33
// public int pformat_len0() { return 22; }
// public String pformat0() { return "% 21.15e"; }
// Custom serializers: the _mem field contains ALL the fields already.
// Init _start to -1, so we know we have not filled in other fields.
// Leave _vec & _chk2 null, leave _len unknown.
@Override final public void initFromBytes() {
_start = -1; _cidx = -1;
_con = UnsafeUtils.get8d(_mem,0);
set_len(UnsafeUtils.get4(_mem,8));
}
@Override public boolean isSparseZero(){return _con == 0;}
@Override public int sparseLenZero() {return _con ==0?0:_len;}
@Override public int nextNZ(int rid) {return _con==0?_len:rid+1;}
@Override public int nonzeros(int [] arr) {
if (_con == 0) return 0;
for (int i = 0; i < _len; ++i) arr[i] = i;
return _len;
}
@Override public boolean isSparseNA(){return Double.isNaN(_con);}
@Override public int sparseLenNA() {return Double.isNaN(_con)?0:_len;}
@Override public int nextNNA(int rid) {return Double.isNaN(_con)?_len:rid+1;}
@Override public int nonnas(int [] arr) {
if (Double.isNaN(_con)) return 0;
for (int i = 0; i < _len; ++i) arr[i] = i;
return _len;
}
@Override public int getSparseDoubles(double [] vals, int [] ids, double NA){
if(_con == 0) return 0;
double con = Double.isNaN(_con)?NA:_con;
for(int i = 0; i < _len; ++i) {
vals[i] = con;
ids[i] = i;
}
return _len;
}
@Override
public <T extends ChunkVisitor> T processRows(T v, int from, int to){
if(_con == 0)
v.addZeros(to-from);
else if(Double.isNaN(_con))
v.addNAs(to-from);
else for(int i = from; i < to; i++)
v.addValue(_con);
return v;
}
@Override
public <T extends ChunkVisitor> T processRows(T v, int [] ids){
if(_con == 0)
v.addZeros(ids.length);
else if(Double.isNaN(_con))
v.addNAs(ids.length);
else for(int i = 0; i < ids.length; i++)
v.addValue(_con);
return v;
}
}