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//---------------------------------------------------------------------
// <copyright file="EntityParameterCollection.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//
// @owner Microsoft
// @backupOwner Microsoft
//---------------------------------------------------------------------
using System.Collections;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Data.Common;
using System.Data.Metadata.Edm;
namespace System.Data.EntityClient
{
/// <summary>
/// Class representing a parameter collection used in EntityCommand
/// </summary>
public sealed partial class EntityParameterCollection : DbParameterCollection
{
private static Type ItemType = typeof(EntityParameter);
private bool _isDirty;
/// <summary>
/// Constructs the EntityParameterCollection object
/// </summary>
internal EntityParameterCollection()
: base()
{
}
/// <summary>
/// Gets the parameter from the collection at the specified index
/// </summary>
/// <param name="index">The index of the parameter to retrieved</param>
/// <returns>The parameter at the index</returns>
public new EntityParameter this[int index]
{
get
{
return (EntityParameter)this.GetParameter(index);
}
set
{
this.SetParameter(index, value);
}
}
/// <summary>
/// Gets the parameter with the given name from the collection
/// </summary>
/// <param name="parameterName">The name of the parameter to retrieved</param>
/// <returns>The parameter with the given name</returns>
public new EntityParameter this[string parameterName]
{
get
{
return (EntityParameter)this.GetParameter(parameterName);
}
set
{
this.SetParameter(parameterName, value);
}
}
/// <summary>
/// Gets whether this collection has been changes since the last reset
/// </summary>
internal bool IsDirty
{
get
{
if (_isDirty)
{
return true;
}
// Loop through and return true if any parameter is dirty
foreach (EntityParameter parameter in this)
{
if (parameter.IsDirty)
{
return true;
}
}
return false;
}
}
/// <summary>
/// Add a EntityParameter to the collection
/// </summary>
/// <param name="value">The parameter to add to the collection</param>
/// <returns>The index of the new parameter within the collection</returns>
public EntityParameter Add(EntityParameter value)
{
this.Add((object)value);
return value;
}
/// <summary>
/// Add a EntityParameter with the given name and value to the collection
/// </summary>
/// <param name="parameterName">The name of the parameter to add</param>
/// <param name="value">The value of the parameter to add</param>
/// <returns>The index of the new parameter within the collection</returns>
public EntityParameter AddWithValue(string parameterName, object value)
{
EntityParameter param = new EntityParameter();
param.ParameterName = parameterName;
param.Value = value;
return this.Add(param);
}
/// <summary>
/// Adds a EntityParameter with the given name and type to the collection
/// </summary>
/// <param name="parameterName">The name of the parameter to add</param>
/// <param name="dbType">The type of the parameter</param>
/// <returns>The index of the new parameter within the collection</returns>
public EntityParameter Add(string parameterName, DbType dbType)
{
return this.Add(new EntityParameter(parameterName, dbType));
}
/// <summary>
/// Add a EntityParameter with the given name, type, and size to the collection
/// </summary>
/// <param name="parameterName">The name of the parameter to add</param>
/// <param name="dbType">The type of the parameter</param>
/// <param name="size">The size of the parameter</param>
/// <returns>The index of the new parameter within the collection</returns>
public EntityParameter Add(string parameterName, DbType dbType, int size)
{
return this.Add(new EntityParameter(parameterName, dbType, size));
}
/// <summary>
/// Adds a range of EntityParameter objects to this collection
/// </summary>
/// <param name="values">The arary of EntityParameter objects to add</param>
public void AddRange(EntityParameter[] values)
{
this.AddRange((Array)values);
}
/// <summary>
/// Check if the collection has a parameter with the given parameter name
/// </summary>
/// <param name="parameterName">The parameter name to look for</param>
/// <returns>True if the collection has a parameter with the given name</returns>
public override bool Contains(string parameterName)
{
return this.IndexOf(parameterName) != -1;
}
/// <summary>
/// Copies the given array of parameters into this collection
/// </summary>
/// <param name="array">The array to copy into</param>
/// <param name="index">The index in the array where the copy starts</param>
public void CopyTo(EntityParameter[] array, int index)
{
this.CopyTo((Array)array, index);
}
/// <summary>
/// Finds the index in the collection of the given parameter object
/// </summary>
/// <param name="value">The parameter to search for</param>
/// <returns>The index of the parameter, -1 if not found</returns>
public int IndexOf(EntityParameter value)
{
return IndexOf((object)value);
}
/// <summary>
/// Add a EntityParameter with the given value to the collection at a location indicated by the index
/// </summary>
/// <param name="index">The index at which the parameter is to be inserted</param>
/// <param name="value">The value of the parameter</param>
public void Insert(int index, EntityParameter value)
{
this.Insert(index, (object)value);
}
/// <summary>
/// Marks that this collection has been changed
/// </summary>
private void OnChange()
{
_isDirty = true;
}
/// <summary>
/// Remove a EntityParameter with the given value from the collection
/// </summary>
/// <param name="value">The parameter to remove</param>
public void Remove(EntityParameter value)
{
this.Remove((object)value);
}
/// <summary>
/// Reset the dirty flag on the collection
/// </summary>
internal void ResetIsDirty()
{
_isDirty = false;
// Loop through and reset each parameter
foreach (EntityParameter parameter in this)
{
parameter.ResetIsDirty();
}
}
}
}
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