|
//------------------------------------------------------------------------------
// <copyright file="DbParameterCollectionBase.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
// <owner current="true" primary="true">Microsoft</owner>
//------------------------------------------------------------------------------
namespace NAMESPACE
{
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Data.Common;
using System.Data.ProviderBase;
using System.Diagnostics;
using System.Globalization;
using System.Runtime.InteropServices;
public sealed partial class PARAMETERCOLLECTIONOBJECTNAME : DbParameterCollection {
private List<PARAMETEROBJECTNAME> _items; // the collection of parameters
override public int Count {
get {
// NOTE: we don't construct the list just to get the count.
return ((null != _items) ? _items.Count : 0);
}
}
private List<PARAMETEROBJECTNAME> InnerList {
get {
List<PARAMETEROBJECTNAME> items = _items;
if (null == items) {
items = new List<PARAMETEROBJECTNAME>();
_items = items;
}
return items;
}
}
override public bool IsFixedSize {
get {
return ((System.Collections.IList)InnerList).IsFixedSize;
}
}
override public bool IsReadOnly {
get {
return ((System.Collections.IList)InnerList).IsReadOnly;
}
}
override public bool IsSynchronized {
get {
return ((System.Collections.ICollection)InnerList).IsSynchronized;
}
}
override public object SyncRoot {
get {
return ((System.Collections.ICollection)InnerList).SyncRoot;
}
}
[
EditorBrowsableAttribute(EditorBrowsableState.Never)
]
override public int Add(object value) {
OnChange(); // fire event before value is validated
ValidateType(value);
Validate(-1, value);
InnerList.Add((PARAMETEROBJECTNAME)value);
return Count-1;
}
override public void AddRange(System.Array values) {
OnChange(); // fire event before value is validated
if (null == values) {
throw ADP.ArgumentNull("values");
}
foreach(object value in values) {
ValidateType(value);
}
foreach(PARAMETEROBJECTNAME value in values) {
Validate(-1, value);
InnerList.Add((PARAMETEROBJECTNAME)value);
}
}
private int CheckName(string parameterName) {
int index = IndexOf(parameterName);
if (index < 0) {
throw ADP.ParametersSourceIndex(parameterName, this, ItemType);
}
return index;
}
override public void Clear() {
OnChange(); // fire event before value is validated
List<PARAMETEROBJECTNAME> items = InnerList;
if (null != items) {
foreach(PARAMETEROBJECTNAME item in items) {
item.ResetParent();
}
items.Clear();
}
}
override public bool Contains(object value) {
return (-1 != IndexOf(value));
}
override public void CopyTo(Array array, int index) {
((System.Collections.ICollection)InnerList).CopyTo(array, index);
}
override public System.Collections.IEnumerator GetEnumerator() {
return ((System.Collections.ICollection)InnerList).GetEnumerator();
}
override protected DbParameter GetParameter(int index) {
RangeCheck(index);
return InnerList[index];
}
override protected DbParameter GetParameter(string parameterName) {
int index = IndexOf(parameterName);
if (index < 0) {
throw ADP.ParametersSourceIndex(parameterName, this, ItemType);
}
return InnerList[index];
}
private static int IndexOf(System.Collections.IEnumerable items, string parameterName) {
if (null != items) {
int i = 0;
// first case, kana, width sensitive search
foreach(PARAMETEROBJECTNAME parameter in items) {
if (0 == ADP.SrcCompare(parameterName, parameter.ParameterName)) {
return i;
}
++i;
}
i = 0;
// then insensitive search
foreach(PARAMETEROBJECTNAME parameter in items) {
if (0 == ADP.DstCompare(parameterName, parameter.ParameterName)) {
return i;
}
++i;
}
}
return -1;
}
override public int IndexOf(string parameterName) {
return IndexOf(InnerList, parameterName);
}
override public int IndexOf(object value) {
if (null != value) {
ValidateType(value);
List<PARAMETEROBJECTNAME> items = InnerList;
if (null != items) {
int count = items.Count;
for (int i = 0; i < count; i++) {
if (value == items[i]) {
return i;
}
}
}
}
return -1;
}
override public void Insert(int index, object value) {
OnChange(); // fire event before value is validated
ValidateType(value);
Validate(-1, (PARAMETEROBJECTNAME)value);
InnerList.Insert(index, (PARAMETEROBJECTNAME)value);
}
private void RangeCheck(int index) {
if ((index < 0) || (Count <= index)) {
throw ADP.ParametersMappingIndex(index, this);
}
}
override public void Remove(object value) {
OnChange(); // fire event before value is validated
ValidateType(value);
int index = IndexOf(value);
if (-1 != index) {
RemoveIndex(index);
}
else if (this != ((PARAMETEROBJECTNAME)value).CompareExchangeParent(null, this)) {
throw ADP.CollectionRemoveInvalidObject(ItemType, this);
}
}
override public void RemoveAt(int index) {
OnChange(); // fire event before value is validated
RangeCheck(index);
RemoveIndex(index);
}
override public void RemoveAt(string parameterName) {
OnChange(); // fire event before value is validated
int index = CheckName(parameterName);
RemoveIndex(index);
}
private void RemoveIndex(int index) {
List<PARAMETEROBJECTNAME> items = InnerList;
Debug.Assert((null != items) && (0 <= index) && (index < Count), "RemoveIndex, invalid");
PARAMETEROBJECTNAME item = items[index];
items.RemoveAt(index);
item.ResetParent();
}
private void Replace(int index, object newValue) {
List<PARAMETEROBJECTNAME> items = InnerList;
Debug.Assert((null != items) && (0 <= index) && (index < Count), "Replace Index invalid");
ValidateType(newValue);
Validate(index, newValue);
PARAMETEROBJECTNAME item = items[index];
items[index] = (PARAMETEROBJECTNAME)newValue;
item.ResetParent();
}
override protected void SetParameter(int index, DbParameter value) {
OnChange(); // fire event before value is validated
RangeCheck(index);
Replace(index, value);
}
override protected void SetParameter(string parameterName, DbParameter value) {
OnChange(); // fire event before value is validated
int index = IndexOf(parameterName);
if (index < 0) {
throw ADP.ParametersSourceIndex(parameterName, this, ItemType);
}
Replace(index, value);
}
private void Validate(int index, object value) {
if (null == value) {
throw ADP.ParameterNull("value", this, ItemType);
}
// Validate assigns the parent - remove clears the parent
object parent = ((PARAMETEROBJECTNAME)value).CompareExchangeParent(this, null);
if (null != parent) {
if (this != parent) {
throw ADP.ParametersIsNotParent(ItemType, this);
}
if (index != IndexOf(value)) {
throw ADP.ParametersIsParent(ItemType, this);
}
}
// generate a ParameterName
String name = ((PARAMETEROBJECTNAME)value).ParameterName;
if (0 == name.Length) {
index = 1;
do {
name = ADP.Parameter + index.ToString(CultureInfo.CurrentCulture);
index++;
} while (-1 != IndexOf(name));
((PARAMETEROBJECTNAME)value).ParameterName = name;
}
}
private void ValidateType(object value) {
if (null == value) {
throw ADP.ParameterNull("value", this, ItemType);
}
else if (!ItemType.IsInstanceOfType(value)) {
throw ADP.InvalidParameterType(this, ItemType, value);
}
}
};
}
|