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Document.cs
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Document.cs
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using System;
using System.Collections;
using System.Collections.Generic;
namespace MongoDB.Driver
{
/// <summary>
/// Description of Document.
/// </summary>
public class Document : DictionaryBase
{
private bool _dirty;
private List<String> orderedKeys;
private IComparer<string> keyComparer;
public Document() : this(null)
{
}
public Document(IComparer<string> comparer)
{
orderedKeys = new List<string>();
keyComparer = comparer;
}
public Object this[String key]
{
get { return Dictionary[key]; }
set{
_dirty = true;
Dictionary[key] = value;
}
}
public IList<string> Keys
{
get{
if (keyComparer != null && _dirty)
orderedKeys.Sort(keyComparer);
return orderedKeys;
}
}
public ICollection Values
{
get { return (Dictionary.Values); }
}
public void Add(String key, Object value)
{
_dirty = true;
Dictionary.Add(key, value);
}
public Document Append(String key, Object value)
{
this.Add(key, value);
return this;
}
/// <summary>
/// Adds an item to the Document at the specified position
/// </summary>
public void Insert(String key, Object value, int index)
{
bool alreadyContains = orderedKeys.Contains(key);
if (!alreadyContains) orderedKeys.Insert(index, key);
else throw new ArgumentException("Key already exists in Document", "key");
try
{
Dictionary.Add(key, value);
}
catch
{
if (!alreadyContains) orderedKeys.Remove(key);
throw;
}
_dirty = true;
}
public Document Prepend(String key, Object value)
{
this.Insert(key, value, 0);
return this;
}
public Document Update(Document @from)
{
if (@from == null)
return this;
foreach (String key in @from.Keys)
{
this[key] = @from[key];
}
return this;
}
public bool Contains(String key)
{
return (orderedKeys.Contains(key));
}
public void Remove(String key)
{
_dirty = true;
Dictionary.Remove(key);
}
public new void Clear()
{
Dictionary.Clear();
}
/// <summary>
/// TODO Fix any accidental reordering issues.
/// </summary>
/// <param name="dest"></param>
public void CopyTo(Document dest)
{
foreach (String key in orderedKeys)
{
if (dest.Contains(key))
dest.Remove(key);
dest[key] = this[key];
}
}
public override bool Equals(object obj)
{
if (obj is Document)
{
return Equals(obj as Document);
}
return base.Equals(obj);
}
public bool Equals(Document obj)
{
if (obj == null)
return false;
if (Keys.Count != obj.Keys.Count)
return false;
return this.GetHashCode() == obj.GetHashCode();
}
public override int GetHashCode()
{
int hash = 27;
foreach (string key in Keys)
{
var valueHashCode = GetValueHashCode(this[key]);
unchecked
{
hash = (13 * hash) + key.GetHashCode();
hash = (13 * hash) + valueHashCode;
}
}
return hash;
}
private int GetValueHashCode(object value)
{
if (value == null)
{
return 0;
}
return (value is Array) ? GetArrayHashcode((Array)value) : value.GetHashCode();
}
private int GetArrayHashcode(Array array)
{
var hash = 0;
foreach (var value in array)
{
var valueHashCode = GetValueHashCode(value);
unchecked
{
hash = (13 * hash) + valueHashCode;
}
}
return hash;
}
protected override void OnClear()
{
orderedKeys.Clear();
base.OnClear();
}
protected override void OnInsertComplete(object key, object value)
{
string strKey = key as string;
if (!orderedKeys.Contains(strKey))
orderedKeys.Add(strKey);
base.OnInsertComplete(key, value);
}
protected override void OnRemoveComplete(object key, object value)
{
string strKey = key as string;
orderedKeys.Remove(strKey);
base.OnRemoveComplete(key, value);
}
protected override void OnSetComplete(object key, object oldValue, object newValue)
{
string strKey = key as string;
if (!orderedKeys.Contains(strKey))
orderedKeys.Add(strKey);
base.OnSetComplete(key, oldValue, newValue);
}
public override string ToString()
{
return JsonFormatter.Serialize(this);
}
}
}