public long Property <TProperty>(Expression <Func <TEntity, TProperty> > predicate, string columnName)
{
var visitor = new MapVisitor(_map);
visitor.Visit(predicate);
var key = visitor.ExposeMap().FullColumnKey;
return(GetTs($"{key}{columnName}"));
}
public IDeleteCommand <TEntity> ExplicitColumn(Expression <Func <TEntity, object> > predicate)
{
var visitor = new MapVisitor(_map);
visitor.Visit(predicate);
//var maps = visitor.ExposeMap().Select(x => x.FullColumnKey);
_descriptors.Add(visitor.ExposeMap().FullColumnKey);
return(this);
}
public IScanCommand <TEntity> FetchColumns <T>(params Expression <Func <TEntity, T> >[] predicates)
{
foreach (var predicate in predicates)
{
var visitor = new MapVisitor(_map);
visitor.Visit(predicate);
_columns.Add(visitor.ExposeMap().FullColumnKey);
}
return(this);
}
public IGetCommand <TEntity> Column(Expression <Func <TEntity, object> > predicate)
{
var visitor = new MapVisitor(_map);
visitor.Visit(predicate);
//var maps = visitor.ExposeMap();
//foreach (var map in maps) _columns.Add(map.FullColumnKey);
_columns.Add(visitor.ExposeMap().FullColumnKey);
return(this);
}
public IScanCommand <TEntity> FetchColumns <T>(Expression <Func <TEntity, IEnumerable <T> > > predicate,
params string[] columns)
{
var visitor = new MapVisitor(_map);
visitor.Visit(predicate);
var map = visitor.ExposeMap();
_columns.AddRange(columns.Select(x => $"{map.ColumnFamily}:{x}"));
return(this);
}
public QualifierFilter <TEntity> Column(Expression <Func <TEntity, object> > predicate)
{
var visitor = new MapVisitor(_map);
visitor.Visit(predicate);
var map = visitor.ExposeMap();
//if (maps.Count > 1)
// throw new FilterException($"[ColumnPrefixFilter] Expected 1 column from predicate, got {maps.Count}");
//var map = maps.FirstOrDefault();
_columnName = map?.ColumnName;
return(this);
}
public void ColumnName(Expression <Func <TEntity, object> > predicate)
{
//todo: rework this as the visitor will always expose 1 map associated to the property
var visitor = new MapVisitor(_map);
visitor.Visit(predicate);
var map = visitor.ExposeMap();
//if (maps.Count > 1)
// throw new FilterException($"[ColumnPrefixFilter] Expected 1 column from predicate, got {maps.Count}");
//var map = maps.FirstOrDefault();
_columnName = map?.ColumnName;
}
public SingleColumnValueFilter <TEntity> Column <TSub>(Expression <Func <TEntity, TSub> > predicate)
{
var visitor = new MapVisitor(_map);
visitor.Visit(predicate);
var map = visitor.ExposeMap();
//if (maps.Count > 1)
// throw new FilterException($"[ColumnPrefixFilter] Expected 1 column from predicate, got {maps.Count}");
//var map = maps.FirstOrDefault();
_columnName = map?.ColumnName;
_columnFamily = map?.ColumnFamily;
return(this);
}
