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91 lines
2.1 KiB
C#
91 lines
2.1 KiB
C#
using System.Collections;
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using System.Collections.Generic;
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using System.Linq;
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using Marr.Data.Mapping;
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namespace Marr.Data.QGen
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{
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/// <summary>
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/// This class represents a View. A view can hold multiple tables (and their columns).
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/// </summary>
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public class View : Table, IEnumerable<Table>
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{
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private string _viewName;
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private Table[] _tables;
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private ColumnMapCollection _columns;
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public View(string viewName, Table[] tables)
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: base(tables[0].EntityType, JoinType.None)
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{
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_viewName = viewName;
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_tables = tables;
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}
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public Table[] Tables
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{
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get { return _tables; }
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}
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public override string Name
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{
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get
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{
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return _viewName;
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}
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set
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{
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_viewName = value;
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}
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}
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public override string Alias
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{
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get
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{
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return base.Alias;
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}
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set
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{
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base.Alias = value;
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// Sync view tables
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foreach (Table table in _tables)
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{
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table.Alias = value;
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}
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}
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}
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/// <summary>
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/// Gets all the columns from all the tables included in the view.
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/// </summary>
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public override ColumnMapCollection Columns
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{
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get
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{
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if (_columns == null)
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{
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var allColumns = _tables.SelectMany(t => t.Columns);
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_columns = new ColumnMapCollection();
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_columns.AddRange(allColumns);
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}
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return _columns;
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}
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}
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public IEnumerator<Table> GetEnumerator()
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{
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foreach (Table table in _tables)
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{
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yield return table;
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}
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}
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IEnumerator IEnumerable.GetEnumerator()
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{
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return GetEnumerator();
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}
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}
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}
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