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//------------------------------------------------------------------------------
// <copyright file="DataRowCollection.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
// <owner current="true" primary="true">Microsoft</owner>
// <owner current="true" primary="false">Microsoft</owner>
// <owner current="false" primary="false">Microsoft</owner>
//------------------------------------------------------------------------------
namespace System.Data {
using System;
using System.Collections;
using System.ComponentModel;
using System.Diagnostics;
public sealed class DataRowCollection : InternalDataCollectionBase {
private sealed class DataRowTree : RBTree<DataRow> {
internal DataRowTree() : base(TreeAccessMethod.INDEX_ONLY) {
}
protected override int CompareNode (DataRow record1, DataRow record2) {
throw ExceptionBuilder.InternalRBTreeError(RBTreeError.CompareNodeInDataRowTree);
}
protected override int CompareSateliteTreeNode (DataRow record1, DataRow record2) {
throw ExceptionBuilder.InternalRBTreeError(RBTreeError.CompareSateliteTreeNodeInDataRowTree);
}
}
private readonly DataTable table;
private readonly DataRowTree list = new DataRowTree();
internal int nullInList = 0;
/// <devdoc>
/// Creates the DataRowCollection for the given table.
/// </devdoc>
internal DataRowCollection(DataTable table) {
this.table = table;
}
public override int Count {
get {
return list.Count;
}
}
/// <devdoc>
/// <para>Gets the row at the specified index.</para>
/// </devdoc>
public DataRow this[int index] {
get {
return list[index];
}
}
/// <devdoc>
/// <para>Adds the specified <see cref='System.Data.DataRow'/> to the <see cref='System.Data.DataRowCollection'/> object.</para>
/// </devdoc>
public void Add(DataRow row) {
table.AddRow(row, -1);
}
public void InsertAt(DataRow row, int pos) {
if (pos < 0)
throw ExceptionBuilder.RowInsertOutOfRange(pos);
if (pos >= list.Count)
table.AddRow(row, -1);
else
table.InsertRow(row, -1, pos);
}
internal void DiffInsertAt(DataRow row, int pos) {
if ((pos < 0) || (pos == list.Count)) {
table.AddRow(row, pos >-1? pos+1 : -1);
return;
}
if (table.NestedParentRelations.Length > 0) { // get in this trouble only if table has a nested parent
// get into trouble if table has JUST a nested parent? how about multi parent!
if (pos < list.Count) {
if (list[pos] != null) {
throw ExceptionBuilder.RowInsertTwice(pos, table.TableName);
}
list.RemoveAt(pos);
nullInList--;
table.InsertRow(row, pos+1, pos);
}
else {
while (pos>list.Count) {
list.Add(null);
nullInList++;
}
table.AddRow(row, pos+1);
}
}
else {
table.InsertRow(row, pos+1, pos > list.Count ? -1 : pos);
}
}
public Int32 IndexOf(DataRow row) {
if ((null == row) || (row.Table != this.table) || ((0 == row.RBTreeNodeId) && (row.RowState == DataRowState.Detached))) //Webdata 102857
return -1;
return list.IndexOf(row.RBTreeNodeId, row);
}
/// <devdoc>
/// <para>Creates a row using specified values and adds it to the
/// <see cref='System.Data.DataRowCollection'/>.</para>
/// </devdoc>
internal DataRow AddWithColumnEvents(params object[] values) {
DataRow row = table.NewRow(-1);
row.ItemArray = values;
table.AddRow(row, -1);
return row;
}
public DataRow Add(params object[] values) {
int record = table.NewRecordFromArray(values);
DataRow row = table.NewRow(record);
table.AddRow(row, -1);
return row;
}
internal void ArrayAdd(DataRow row) {
row.RBTreeNodeId = list.Add(row);
}
internal void ArrayInsert(DataRow row, int pos) {
row.RBTreeNodeId = list.Insert(pos, row);
}
internal void ArrayClear() {
list.Clear();
}
internal void ArrayRemove(DataRow row) {
if (row.RBTreeNodeId == 0) {
throw ExceptionBuilder.InternalRBTreeError(RBTreeError.AttachedNodeWithZerorbTreeNodeId);
}
list.RBDelete(row.RBTreeNodeId);
row.RBTreeNodeId = 0;
}
/// <devdoc>
/// <para>Gets
/// the row specified by the primary key value.
/// </para>
/// </devdoc>
public DataRow Find(object key) {
return table.FindByPrimaryKey(key);
}
/// <devdoc>
/// <para>Gets the row containing the specified primary key values.</para>
/// </devdoc>
public DataRow Find(object[] keys) {
return table.FindByPrimaryKey(keys);
}
/// <devdoc>
/// <para>Clears the collection of all rows.</para>
/// </devdoc>
public void Clear() {
table.Clear(false);
}
/// <devdoc>
/// <para>
/// Gets a value indicating whether the primary key of any row in the
/// collection contains the specified value.
/// </para>
/// </devdoc>
public bool Contains(object key) {
return(table.FindByPrimaryKey(key) != null);
}
/// <devdoc>
/// <para>
/// Gets a value indicating if the <see cref='System.Data.DataRow'/> with
/// the specified primary key values exists.
/// </para>
/// </devdoc>
public bool Contains(object[] keys) {
return(table.FindByPrimaryKey(keys) != null);
}
public override void CopyTo(Array ar, int index) {
list.CopyTo(ar, index);
}
public void CopyTo(DataRow[] array, int index) {
list.CopyTo(array, index);
}
public override IEnumerator GetEnumerator() {
return list.GetEnumerator();
}
/// <devdoc>
/// <para>Removes the specified <see cref='System.Data.DataRow'/> from the collection.</para>
/// </devdoc>
public void Remove(DataRow row) {
if ((null == row) || (row.Table != table) || (-1 == row.rowID)) {
throw ExceptionBuilder.RowOutOfRange();
}
if ((row.RowState != DataRowState.Deleted) && (row.RowState != DataRowState.Detached))
row.Delete();
if (row.RowState != DataRowState.Detached)
row.AcceptChanges();
}
/// <devdoc>
/// <para>
/// Removes the row with the specified index from
/// the collection.
/// </para>
/// </devdoc>
public void RemoveAt(int index) {
Remove(this[index]);
}
}
}
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