/
DataTableMappingCollection.cs
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/
DataTableMappingCollection.cs
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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Diagnostics.CodeAnalysis;
namespace System.Data.Common
{
[ListBindable(false)]
[Editor("Microsoft.VSDesigner.Data.Design.DataTableMappingCollectionEditor, Microsoft.VSDesigner, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a",
"System.Drawing.Design.UITypeEditor, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
public sealed class DataTableMappingCollection : MarshalByRefObject, ITableMappingCollection
{
private List<DataTableMapping>? _items; // delay creation until AddWithoutEvents, Insert, CopyTo, GetEnumerator
public DataTableMappingCollection() { }
// explicit ICollection implementation
bool ICollection.IsSynchronized => false;
object ICollection.SyncRoot => this;
// explicit IList implementation
bool IList.IsReadOnly => false;
bool IList.IsFixedSize => false;
object? IList.this[int index]
{
get { return this[index]; }
set
{
ValidateType(value);
this[index] = (DataTableMapping)value;
}
}
object ITableMappingCollection.this[string index]
{
get { return this[index]; }
set
{
ValidateType(value);
this[index] = (DataTableMapping)value;
}
}
ITableMapping ITableMappingCollection.Add(string sourceTableName, string dataSetTableName) =>
Add(sourceTableName, dataSetTableName);
ITableMapping ITableMappingCollection.GetByDataSetTable(string dataSetTableName) =>
GetByDataSetTable(dataSetTableName);
[Browsable(false)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public int Count => (null != _items) ? _items.Count : 0;
private static Type ItemType => typeof(DataTableMapping);
[Browsable(false)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public DataTableMapping this[int index]
{
get
{
RangeCheck(index);
return _items![index];
}
set
{
RangeCheck(index);
Replace(index, value);
}
}
[Browsable(false)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public DataTableMapping this[string sourceTable]
{
get
{
int index = RangeCheck(sourceTable);
return _items![index];
}
set
{
int index = RangeCheck(sourceTable);
Replace(index, value);
}
}
public int Add(object? value)
{
ValidateType(value);
Add((DataTableMapping)value);
return Count - 1;
}
private DataTableMapping Add(DataTableMapping value)
{
AddWithoutEvents(value);
return value;
}
public void AddRange(DataTableMapping[] values) => AddEnumerableRange(values, false);
public void AddRange(System.Array values) => AddEnumerableRange(values, false);
private void AddEnumerableRange(Array values, bool doClone)
{
if (null == values)
{
throw ADP.ArgumentNull(nameof(values));
}
foreach (object value in values)
{
ValidateType(value);
}
if (doClone)
{
foreach (ICloneable value in values)
{
AddWithoutEvents(value.Clone() as DataTableMapping);
}
}
else
{
foreach (DataTableMapping value in values)
{
AddWithoutEvents(value);
}
}
}
public DataTableMapping Add(string? sourceTable, string? dataSetTable) =>
Add(new DataTableMapping(sourceTable, dataSetTable));
private void AddWithoutEvents(DataTableMapping? value)
{
Validate(-1, value);
value.Parent = this;
ArrayList().Add(value);
}
// implemented as a method, not as a property because the VS7 debugger
// object browser calls properties to display their value, and we want this delayed
private List<DataTableMapping> ArrayList() => _items ??= new List<DataTableMapping>();
public void Clear()
{
if (0 < Count)
{
ClearWithoutEvents();
}
}
private void ClearWithoutEvents()
{
if (null != _items)
{
foreach (DataTableMapping item in _items)
{
item.Parent = null;
}
_items.Clear();
}
}
public bool Contains(string? value) => (-1 != IndexOf(value));
public bool Contains(object? value) => (-1 != IndexOf(value));
public void CopyTo(Array array, int index) => ((ICollection)ArrayList()).CopyTo(array, index);
public void CopyTo(DataTableMapping[] array, int index) => ArrayList().CopyTo(array, index);
public DataTableMapping GetByDataSetTable(string dataSetTable)
{
int index = IndexOfDataSetTable(dataSetTable);
if (0 > index)
{
throw ADP.TablesDataSetTable(dataSetTable);
}
return _items![index];
}
public IEnumerator GetEnumerator() => ArrayList().GetEnumerator();
public int IndexOf(object? value)
{
if (null != value)
{
ValidateType(value);
for (int i = 0; i < Count; ++i)
{
if (_items![i] == value)
{
return i;
}
}
}
return -1;
}
public int IndexOf(string? sourceTable)
{
if (!string.IsNullOrEmpty(sourceTable))
{
for (int i = 0; i < Count; ++i)
{
string value = _items![i].SourceTable;
if ((null != value) && (0 == ADP.SrcCompare(sourceTable, value)))
{
return i;
}
}
}
return -1;
}
public int IndexOfDataSetTable(string? dataSetTable)
{
if (!string.IsNullOrEmpty(dataSetTable))
{
for (int i = 0; i < Count; ++i)
{
string value = _items![i].DataSetTable;
if ((null != value) && (0 == ADP.DstCompare(dataSetTable, value)))
{
return i;
}
}
}
return -1;
}
public void Insert(int index, object? value)
{
ValidateType(value);
Insert(index, (DataTableMapping)value);
}
public void Insert(int index, DataTableMapping value)
{
if (null == value)
{
throw ADP.TablesAddNullAttempt(nameof(value));
}
Validate(-1, value);
value.Parent = this;
ArrayList().Insert(index, value);
}
private void RangeCheck(int index)
{
if ((index < 0) || (Count <= index))
{
throw ADP.TablesIndexInt32(index, this);
}
}
private int RangeCheck(string sourceTable)
{
int index = IndexOf(sourceTable);
if (index < 0)
{
throw ADP.TablesSourceIndex(sourceTable);
}
return index;
}
public void RemoveAt(int index)
{
RangeCheck(index);
RemoveIndex(index);
}
public void RemoveAt(string sourceTable)
{
int index = RangeCheck(sourceTable);
RemoveIndex(index);
}
private void RemoveIndex(int index)
{
Debug.Assert((null != _items) && (0 <= index) && (index < Count), "RemoveIndex, invalid");
_items[index].Parent = null;
_items.RemoveAt(index);
}
public void Remove(object? value)
{
ValidateType(value);
Remove((DataTableMapping)value);
}
public void Remove(DataTableMapping value)
{
if (null == value)
{
throw ADP.TablesAddNullAttempt(nameof(value));
}
int index = IndexOf(value);
if (-1 != index)
{
RemoveIndex(index);
}
else
{
throw ADP.CollectionRemoveInvalidObject(ItemType, this);
}
}
private void Replace(int index, DataTableMapping newValue)
{
Validate(index, newValue);
_items![index].Parent = null;
newValue.Parent = this;
_items[index] = newValue;
}
private static void ValidateType([NotNull] object? value)
{
if (null == value)
{
throw ADP.TablesAddNullAttempt(nameof(value));
}
else if (!ItemType.IsInstanceOfType(value))
{
throw ADP.NotADataTableMapping(value);
}
}
private void Validate(int index, [NotNull] DataTableMapping? value)
{
if (null == value)
{
throw ADP.TablesAddNullAttempt(nameof(value));
}
if (null != value.Parent)
{
if (this != value.Parent)
{
throw ADP.TablesIsNotParent(this);
}
else if (index != IndexOf(value))
{
throw ADP.TablesIsParent(this);
}
}
string name = value.SourceTable;
if (string.IsNullOrEmpty(name))
{
index = 1;
do
{
name = ADP.SourceTable + index.ToString(System.Globalization.CultureInfo.InvariantCulture);
index++;
} while (-1 != IndexOf(name));
value.SourceTable = name;
}
else
{
ValidateSourceTable(index, name);
}
}
internal void ValidateSourceTable(int index, string? value)
{
int pindex = IndexOf(value);
if ((-1 != pindex) && (index != pindex))
{
// must be non-null and unique
throw ADP.TablesUniqueSourceTable(value);
}
}
[EditorBrowsable(EditorBrowsableState.Advanced)]
public static DataTableMapping? GetTableMappingBySchemaAction(DataTableMappingCollection? tableMappings, string sourceTable, string dataSetTable, MissingMappingAction mappingAction)
{
if (null != tableMappings)
{
int index = tableMappings.IndexOf(sourceTable);
if (-1 != index)
{
return tableMappings._items![index];
}
}
if (string.IsNullOrEmpty(sourceTable))
{
throw ADP.InvalidSourceTable(nameof(sourceTable));
}
switch (mappingAction)
{
case MissingMappingAction.Passthrough:
return new DataTableMapping(sourceTable, dataSetTable);
case MissingMappingAction.Ignore:
return null;
case MissingMappingAction.Error:
throw ADP.MissingTableMapping(sourceTable);
default:
throw ADP.InvalidMissingMappingAction(mappingAction);
}
}
}
}