/**
* (C) Copyright IBM Corp. 2010, 2015
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package com.ibm.bi.dml.hops.cost;
/**
*
*
*/
public class VarStats
{
long _rlen = -1;
long _clen = -1;
long _brlen = -1;
long _bclen = -1;
double _nnz = -1;
boolean _inmem = false;
public VarStats( long rlen, long clen, long brlen, long bclen, long nnz, boolean inmem )
{
_rlen = rlen;
_clen = clen;
_brlen = brlen;
_bclen = bclen;
_nnz = nnz;
_inmem = inmem;
}
/**
*
* @return
*/
public double getSparsity()
{
return (_nnz<0) ? 1.0 : (double)_nnz/_rlen/_clen;
}
@Override
public String toString()
{
StringBuilder sb = new StringBuilder();
sb.append("VarStats: [");
sb.append("rlen = ");
sb.append(_rlen);
sb.append(", clen = ");
sb.append(_clen);
sb.append(", nnz = ");
sb.append(_nnz);
sb.append(", inmem = ");
sb.append(_inmem);
sb.append("]");
return sb.toString();
}
@Override
public Object clone()
{
return new VarStats(_rlen, _clen, _brlen, _bclen,(long)_nnz, _inmem );
}
}