public static DataTable Pivot(this IDataReader reader, PivotDef pivotDef, Comparison<PivotedColumn> pivotedColumnComparison)
{
if (reader == null) throw new ArgumentNullException("reader");
if (pivotDef == null) throw new ArgumentNullException("pivotDef");
if (pivotedColumnComparison == null) throw new ArgumentNullException("pivotedColumnComparison");
if (pivotDef.UnpivotedColumnNames == null) throw new ArgumentException("UnpivotedColumns must not be null");
if (pivotDef.PivotTransforms == null) throw new ArgumentException("PivotColumns must not be null");
if (pivotDef.PivotTransforms.Any(x => x == null)) throw new ArgumentException("All PivotColums mut be not null");
var builder = new SimplePivotBuilder(pivotDef, reader, pivotedColumnComparison);
return builder.Build();
}
public DataTable Pivot(Comparison <PivotedColumn> pivotedColumnComparison, params PivotTransform[] pivotTransforms)
{
var cmd = new CommandExecutor(this.DataService, true)
{
GetCommandFunc = GetSelectCommand,
CommandTimeout = this.CommandTimeout
};
var properties = this.EntityType.GetEntityMetadata().Properties;
IEnumerable <string> unpivotedPropertyNames = this.Sort
.Where(x => !pivotTransforms.Any(p => p.PivotColumnName == x.FieldName || p.ValueColumnName == x.FieldName))
.Select(x => x.FieldName);
using (var reader = cmd.ExecuteReader())
{
PivotDef pivotDef = new PivotDef
{
UnpivotedColumnNames = unpivotedPropertyNames.ToArray(),
PivotTransforms = pivotTransforms
};
return(reader.Pivot(pivotDef, pivotedColumnComparison));
}
}
public SimplePivotBuilder(PivotDef pivotDef, IDataReader reader, Comparison<PivotedColumn> pivotedColumnComparison)
{
this.PivotedColumnComparison = pivotedColumnComparison;
this.PivotDef = pivotDef;
this.Reader = reader;
}
public static DataTable Pivot(this IDataReader reader, PivotDef pivotDef)
{
return Pivot(reader, pivotDef, DefaultPivotedColumnComparison);
}
public DataTable Pivot(Comparison<PivotedColumn> pivotedColumnComparison, params PivotTransform[] pivotTransforms)
{
var cmd = new CommandExecutor(this.DataService, true)
{
GetCommandFunc = GetSelectCommand,
CommandTimeout = this.CommandTimeout
};
var properties = this.EntityType.GetEntityMetadata().Properties;
IEnumerable<string> unpivotedPropertyNames = this.Sort
.Where(x => !pivotTransforms.Any(p => p.PivotColumnName == x.FieldName || p.ValueColumnName == x.FieldName))
.Select(x => x.FieldName);
using (var reader = cmd.ExecuteReader())
{
PivotDef pivotDef = new PivotDef
{
UnpivotedColumnNames = unpivotedPropertyNames.ToArray(),
PivotTransforms = pivotTransforms
};
return reader.Pivot(pivotDef, pivotedColumnComparison);
}
}
