package org.aksw.sparqlify.algebra.sql.exprs2;
import org.aksw.sparqlify.core.TypeToken;
import org.apache.jena.atlas.io.IndentedWriter;
public interface SqlAggregator {
SqlExpr getExpr();
/**
* This method must always return the same result
*
* @return
*/
TypeToken getDatatype();
void asString(IndentedWriter writer);
SqlAggregator copy(SqlExpr arg);
}