internal static ProjectedColumns ProjectColumns(Nominator nominator, Expression expression, IEnumerable<SqlColumnDeclaration> existingColumns, string newAlias, IEnumerable<string> existingAliases)
{
var projector = new ColumnProjector(nominator, expression, existingColumns, newAlias, existingAliases);
expression = projector.Visit(expression);
return new ProjectedColumns(expression, projector.columns.ToReadOnlyCollection());
}
internal static ProjectedColumns ProjectColumns(Nominator nominator, Expression expression, IEnumerable <SqlColumnDeclaration> existingColumns, string newAlias, IEnumerable <string> existingAliases)
{
var projector = new ColumnProjector(nominator, expression, existingColumns, newAlias, existingAliases);
expression = projector.Visit(expression);
return(new ProjectedColumns(expression, projector.columns.ToReadOnlyCollection()));
}
internal ColumnProjector(TypeDescriptorProvider typeDescriptorProvider, Nominator nominator, Expression expression, string newAlias, params string[] existingAliases)
{
columnNames = new HashSet <string>();
columns = new List <SqlColumnDeclaration>();
mappedColumnExpressions = new Dictionary <SqlColumnExpression, SqlColumnExpression>();
this.typeDescriptorProvider = typeDescriptorProvider;
this.nominator = nominator;
this.newAlias = newAlias;
this.existingAliases = existingAliases;
this.candidates = nominator.Nominate(expression);
}
internal ColumnProjector(Nominator nominator, Expression expression, IEnumerable<SqlColumnDeclaration> existingColumns, string newAlias, IEnumerable<string> existingAliases)
{
this.mappedColumnExpressions = new Dictionary<SqlColumnExpression, SqlColumnExpression>();
if (existingColumns != null)
{
this.columns = new List<SqlColumnDeclaration>(existingColumns);
this.columnNames = new HashSet<string>(this.columns.Select(c => c.Name));
}
else
{
this.columns = new List<SqlColumnDeclaration>();
this.columnNames = new HashSet<string>();
}
this.newAlias = newAlias;
this.existingAliases = existingAliases.ToArray();
this.candidates = nominator.Nominate(expression);
}
internal ColumnProjector(Nominator nominator, Expression expression, IEnumerable <SqlColumnDeclaration> existingColumns, string newAlias, IEnumerable <string> existingAliases)
{
this.mappedColumnExpressions = new Dictionary <SqlColumnExpression, SqlColumnExpression>();
if (existingColumns != null)
{
this.columns = new List <SqlColumnDeclaration>(existingColumns);
this.columnNames = new HashSet <string>(this.columns.Select(c => c.Name));
}
else
{
this.columns = new List <SqlColumnDeclaration>();
this.columnNames = new HashSet <string>();
}
this.newAlias = newAlias;
this.existingAliases = existingAliases.ToArray();
this.candidates = nominator.Nominate(expression);
}
public static ProjectedColumns ProjectColumns(TypeDescriptorProvider typeDescriptorProvider, Nominator nominator, Expression expression, string newAlias, params string[] existingAliases)
{
var projector = new ColumnProjector(typeDescriptorProvider, nominator, expression, newAlias, existingAliases);
expression = projector.Visit(expression);
return(new ProjectedColumns(expression, projector.columns.ToReadOnlyList()));
}