/// <summary>
/// 添加索引
/// </summary>
/// <param name="IdxOpt"></param>
/// <param name="option"></param>
/// <param name="currentCollection"></param>
/// <returns></returns>
public static bool CreateMongoIndex(IndexOption IdxOpt,
IndexOptionsBuilder option, MongoCollection currentCollection, ref string errorMessage)
{
var mongoCol = currentCollection;
var indexkeys = new IndexKeysBuilder();
if (!string.IsNullOrEmpty(IdxOpt.GeoSpatialHaystackKey))
{
indexkeys.GeoSpatialHaystack(IdxOpt.GeoSpatialHaystackKey);
}
if (!string.IsNullOrEmpty(IdxOpt.GeoSpatialKey))
{
indexkeys.GeoSpatial(IdxOpt.GeoSpatialKey);
}
if (!string.IsNullOrEmpty(IdxOpt.GeoSpatialSphericalKey))
{
indexkeys.GeoSpatialSpherical(IdxOpt.GeoSpatialSphericalKey);
}
indexkeys.Ascending(IdxOpt.AscendingKey.ToArray());
indexkeys.Descending(IdxOpt.DescendingKey.ToArray());
indexkeys.Text(IdxOpt.TextKey.ToArray());
//CreateIndex失败的时候会出现异常！
try
{
var result = mongoCol.CreateIndex(indexkeys, option);
return(result.Response.GetElement("ok").Value.AsInt32 == 1);
}
catch (Exception ex)
{
errorMessage = ex.ToString();
return(false);
}
}
public Bar this[DateTime dateTime, IndexOption option = IndexOption.Null]
{
get
{
return(this.items[this.GetIndex(dateTime, option)]);
}
}
public int GetIndex(DateTime datetime, IndexOption option = IndexOption.Null)
{
if (datetime < FirstDateTime)
{
return(option == IndexOption.Null || option == IndexOption.Prev ? -1 : 0);
}
if (datetime > LastDateTime)
{
return(option == IndexOption.Null || option == IndexOption.Next ? -1 : Count - 1);
}
var i = this.bars.BinarySearch(new Bar()
{
DateTime = datetime
}, new DataObjectComparer());
if (i >= 0)
{
return(i);
}
else if (option == IndexOption.Next)
{
return(~i);
}
else if (option == IndexOption.Prev)
{
return(~i - 1);
}
else
{
return(-1);
}
}
internal DataKey GetKey(DateTime dateTime, DataKey key = null, IndexOption option = IndexOption.Null)
{
lock (Sync)
{
if (Count == 0 || dateTime > DateTime2)
{
Console.WriteLine($"DataSeries::GetKey dateTime is out of range : {dateTime}");
return(null);
}
if (key == null)
{
key = this.readKey;
}
DataKey @class = null;
DataKey class2 = null;
if (dateTime <= DateTime1)
{
return(GetFirstKey());
}
if (key != null)
{
if (key.dateTime1 <= dateTime && dateTime <= key.dateTime2)
{
return(key);
}
if (dateTime > key.dateTime2)
{
class2 = key;
@class = GetNextKey(class2);
}
}
if (@class == null)
{
@class = GetFirstKey();
}
while (option == IndexOption.Null || class2 == null || !(dateTime > class2.dateTime2) || !(dateTime < @class.dateTime1))
{
if (@class.dateTime1 <= dateTime && dateTime <= @class.dateTime2)
{
return(@class);
}
class2 = @class;
@class = GetNextKey(class2);
}
if (option == IndexOption.Next)
{
return(@class);
}
return(class2);
}
}
private IList <IndexOption> ConvertArgsToOptions(DeploymentPlanContributorContext context)
{
List <IndexOption> options = new List <IndexOption>();
foreach (var entry in context.Arguments)
{
OptionDefinition optionDefinition;
if (_optionArgumentMap.TryGetValue(entry.Key, out optionDefinition))
{
IndexOption option = optionDefinition.CreateOption(entry.Value);
if (option != null)
{
options.Add(option);
}
}
}
return(options);
}
private int GetIndex_me(DateTime dateTime, IndexOption option)
{
var i = this.quotes.BinarySearch(new Quote {
DateTime = dateTime
}, new DataObjectComparer());
if (i >= 0)
{
return(i);
}
if (option == IndexOption.Next)
{
return(~i);
}
if (option == IndexOption.Prev)
{
return(~i - 1);
}
return(-1); // option == IndexOption.Null
}
public override void ExplicitVisit(IndexOption fragment)
{
_fragments.Add(fragment);
}
/// <summary>
/// 添加索引
/// </summary>
/// <param name="IdxOpt"></param>
/// <param name="option"></param>
/// <param name="currentCollection"></param>
/// <returns></returns>
public static bool CreateMongoIndex(IndexOption IdxOpt,
IndexOptionsBuilder option, MongoCollection currentCollection,ref string errorMessage)
{
var mongoCol = currentCollection;
var indexkeys = new IndexKeysBuilder();
if (!string.IsNullOrEmpty(IdxOpt.GeoSpatialHaystackKey)) indexkeys.GeoSpatialHaystack(IdxOpt.GeoSpatialHaystackKey);
if (!string.IsNullOrEmpty(IdxOpt.GeoSpatialKey)) indexkeys.GeoSpatial(IdxOpt.GeoSpatialKey);
if (!string.IsNullOrEmpty(IdxOpt.GeoSpatialSphericalKey)) indexkeys.GeoSpatialSpherical(IdxOpt.GeoSpatialSphericalKey);
if (!string.IsNullOrEmpty(IdxOpt.HashedKey)) indexkeys.Hashed(IdxOpt.HashedKey);
indexkeys.Ascending(IdxOpt.AscendingKey.ToArray());
indexkeys.Descending(IdxOpt.DescendingKey.ToArray());
indexkeys.Text(IdxOpt.TextKey.ToArray());
//CreateIndex失败的时候会出现异常！
try
{
var result = mongoCol.CreateIndex(indexkeys, option);
return result.Response.GetElement("ok").Value.AsInt32 == 1;
}
catch (Exception ex)
{
errorMessage = ex.ToString();
return false;
}
}
internal DataKey GetKey(DateTime dateTime, DataKey key = null, IndexOption option = IndexOption.Null)
{
lock (Sync)
{
if (Count == 0 || dateTime > DateTime2)
{
Console.WriteLine($"DataSeries::GetKey dateTime is out of range : {dateTime}");
return null;
}
if (key == null)
key = this.readKey;
DataKey @class = null;
DataKey class2 = null;
if (dateTime <= DateTime1)
return GetFirstKey();
if (key != null)
{
if (key.dateTime1 <= dateTime && dateTime <= key.dateTime2)
return key;
if (dateTime > key.dateTime2)
{
class2 = key;
@class = GetNextKey(class2);
}
}
if (@class == null)
@class = GetFirstKey();
while (option == IndexOption.Null || class2 == null || !(dateTime > class2.dateTime2) || !(dateTime < @class.dateTime1))
{
if (@class.dateTime1 <= dateTime && dateTime <= @class.dateTime2)
{
return @class;
}
class2 = @class;
@class = GetNextKey(class2);
}
if (option == IndexOption.Next)
{
return @class;
}
return class2;
}
}
public static bool CreateIndex(IndexOption UIOption, ref string strMessageTitle, ref string strMessageContent)
{
var Result = true;
var option = new IndexOptionsBuilder();
option.SetBackground(UIOption.IsBackground);
option.SetDropDups(UIOption.IsDropDups);
option.SetSparse(UIOption.IsSparse);
option.SetUnique(UIOption.IsUnique);
if (UIOption.IsExpireData)
{
//TTL的限制条件很多
//http://docs.mongodb.org/manual/tutorial/expire-data/
//不能是组合键
var canUseTtl = true;
if ((UIOption.ascendingKey.Count + UIOption.descendingKey.Count + (string.IsNullOrEmpty(UIOption.geoSpatialKey) ? 0 : 1)) != 1)
{
strMessageTitle = "Can't Set TTL";
strMessageContent = "the TTL index may not be compound (may not have multiple fields).";
canUseTtl = false;
}
else
{
//不能是_id
if (UIOption.firstKey == ConstMgr.KeyId)
{
strMessageTitle = "Can't Set TTL";
strMessageContent = "you cannot create this index on the _id field, or a field that already has an index.";
canUseTtl = false;
}
}
if (RuntimeMongoDbContext.GetCurrentCollection().IsCapped())
{
strMessageTitle = "Can't Set TTL";
strMessageContent = "you cannot use a TTL index on a capped collection, because MongoDB cannot remove documents from a capped collection.";
canUseTtl = false;
}
if (canUseTtl)
{
strMessageTitle = "Constraints Of TimeToLive";
strMessageContent = "the indexed field must be a date BSON type. If the field does not have a date type, the data will not expire." +
Environment.NewLine + "if the field holds an array, and there are multiple date-typed data in the index, the document will expire when the lowest (i.e. earliest) matches the expiration threshold.";
option.SetTimeToLive(new TimeSpan(0, 0, UIOption.TTL));
}
}
var totalIndex = (UIOption.ascendingKey.Count + UIOption.descendingKey.Count +
(string.IsNullOrEmpty(UIOption.geoSpatialKey) ? 0 : 1) +
(string.IsNullOrEmpty(UIOption.textKey) ? 0 : 1));
if (UIOption.IndexName != string.Empty && !RuntimeMongoDbContext.GetCurrentCollection().IndexExists(UIOption.IndexName) && totalIndex != 0)
{
option.SetName(UIOption.IndexName);
try
{
//暂时要求只能一个TextKey
if (!string.IsNullOrEmpty(UIOption.textKey))
{
var textKeysDoc = new IndexKeysDocument {
{ UIOption.textKey, "text" }
};
RuntimeMongoDbContext.GetCurrentCollection().CreateIndex(textKeysDoc, option);
}
else
{
Operater.CreateMongoIndex(UIOption.ascendingKey.ToArray(), UIOption.descendingKey.ToArray(), UIOption.geoSpatialKey,
option, RuntimeMongoDbContext.GetCurrentCollection());
}
strMessageTitle = "Index Add Completed!";
strMessageContent = "IndexName:" + UIOption.IndexName + " is add to collection.";
}
catch (Exception ex)
{
strMessageTitle = "Index Add Failed!";
strMessageContent = "IndexName:" + UIOption.IndexName;
Result = false;
}
}
else
{
strMessageTitle = "Index Add Failed!";
strMessageContent = "Please Check the index information.";
Result = false;
}
return(Result);
}
public Bar this[DateTime dateTime, IndexOption option = IndexOption.Null] => this[GetIndex(dateTime, option)];
/// <summary>
/// Asynchronously creates an index on this collection.
/// </summary>
/// <param retval="index">This is an expression of the elements in the type you wish to index, so you can do something like:
/// <code>
/// y=>y.MyIndexedProperty
/// </code>
/// or, if you have a multi-fieldSelectionExpando index, you can do this:
/// <code>
/// y=> new { y.PropertyA, y.PropertyB.Property1, y.PropertyC }
/// </code>
/// This will automatically map the MongoConfiguration aliases.
/// </param>
/// <param retval="indexName">The retval of the index as it should appear in the special "system.indexes" child collection.</param>
/// <param retval="isUnique">True if MongoDB can expect that each document will have a unique combination for this fieldSelectionExpando.
/// MongoDB will potentially optimize the index based on this being true.</param>
/// <param retval="direction">Should all of the elements in the index be sorted Ascending, or Decending, if you need to sort each property differently,
/// you should use the Expando overload of this method for greater granularity.</param>
public static void CreateIndex <T, U>(this IMongoCollection <T> collection, Expression <Func <T, U> > index, string indexName, bool isUnique, IndexOption direction)
{
var exp = index.Body as NewExpression;
var key = new Expando();
if (exp != null)
{
foreach (var x in exp.Arguments.OfType <MemberExpression>())
{
key[x.GetPropertyAlias()] = direction;
}
}
else if (index.Body is MemberExpression)
{
var me = index.Body as MemberExpression;
key[me.GetPropertyAlias()] = direction;
}
collection.CreateIndex(key, indexName, isUnique);
}
public override int GetIndex(DateTime datetime, IndexOption option = IndexOption.Null)
{
Calculate();
return base.GetIndex(datetime, option);
}
public int GetIndex(DateTime datetime, IndexOption option)
{
int num = 0;
int num2 = 0;
int num3 = this.items.Count - 1;
bool flag = true;
while (flag)
{
if (num3 < num2)
{
return(-1);
}
num = (num2 + num3) / 2;
switch (option)
{
case IndexOption.Null:
if (this.items[num].dateTime == datetime)
{
flag = false;
}
else
{
if (this.items[num].dateTime > datetime)
{
num3 = num - 1;
}
else
{
if (this.items[num].dateTime < datetime)
{
num2 = num + 1;
}
}
}
break;
case IndexOption.Next:
if (this.items[num].dateTime >= datetime && (num == 0 || this.items[num - 1].dateTime < datetime))
{
flag = false;
}
else
{
if (this.items[num].dateTime < datetime)
{
num2 = num + 1;
}
else
{
num3 = num - 1;
}
}
break;
case IndexOption.Prev:
if (this.items[num].dateTime <= datetime && (num == this.items.Count - 1 || this.items[num + 1].dateTime > datetime))
{
flag = false;
}
else
{
if (this.items[num].dateTime > datetime)
{
num3 = num - 1;
}
else
{
num2 = num + 1;
}
}
break;
}
}
return(num);
}
/// <summary>
///
/// </summary>
/// <param name="uiOption"></param>
/// <param name="strMessageTitle"></param>
/// <param name="strMessageContent"></param>
/// <returns></returns>
public static bool CreateIndex(IndexOption uiOption, ref string strMessageTitle, ref string strMessageContent)
{
var result = true;
var option = new IndexOptionsBuilder();
option.SetBackground(uiOption.IsBackground);
option.SetDropDups(uiOption.IsDropDups);
option.SetSparse(uiOption.IsSparse);
option.SetUnique(uiOption.IsUnique);
if (uiOption.IsPartial)
{
IMongoQuery query = (QueryDocument) BsonDocument.Parse(uiOption.PartialCondition);
option.SetPartialFilterExpression(query);
}
if (uiOption.IsExpireData)
{
//TTL的限制条件很多
//http://docs.mongodb.org/manual/tutorial/expire-data/
//不能是组合键
var canUseTtl = true;
if (uiOption.AscendingKey.Count + uiOption.DescendingKey.Count +
(string.IsNullOrEmpty(uiOption.GeoSpatialKey) ? 0 : 1) != 1)
{
strMessageTitle = "Can't Set TTL";
strMessageContent = "the TTL index may not be compound (may not have multiple fields).";
canUseTtl = false;
}
else
{
//不能是_id
if (uiOption.FirstKey == ConstMgr.KeyId)
{
strMessageTitle = "Can't Set TTL";
strMessageContent =
"you cannot create this index on the _id field, or a field that already has an index.";
canUseTtl = false;
}
}
if (RuntimeMongoDbContext.GetCurrentCollection().IsCapped())
{
strMessageTitle = "Can't Set TTL";
strMessageContent =
"you cannot use a TTL index on a capped collection, because MongoDB cannot remove documents from a capped collection.";
canUseTtl = false;
}
if (canUseTtl)
{
strMessageTitle = "Constraints Of TimeToLive";
strMessageContent =
"the indexed field must be a date BSON type. If the field does not have a date type, the data will not expire." +
Environment.NewLine +
"if the field holds an array, and there are multiple date-typed data in the index, the document will expire when the lowest (i.e. earliest) matches the expiration threshold.";
option.SetTimeToLive(new TimeSpan(0, 0, uiOption.Ttl));
}
}
var totalIndex = uiOption.AscendingKey.Count + uiOption.DescendingKey.Count +
(string.IsNullOrEmpty(uiOption.GeoSpatialKey) ? 0 : 1) +
(string.IsNullOrEmpty(uiOption.TextKey) ? 0 : 1);
if (uiOption.IndexName != string.Empty &&
!RuntimeMongoDbContext.GetCurrentCollection().IndexExists(uiOption.IndexName) && totalIndex != 0)
{
option.SetName(uiOption.IndexName);
try
{
//暂时要求只能一个TextKey
if (!string.IsNullOrEmpty(uiOption.TextKey))
{
var textKeysDoc = new IndexKeysDocument {{uiOption.TextKey, "text"}};
RuntimeMongoDbContext.GetCurrentCollection().CreateIndex(textKeysDoc, option);
}
else
{
CreateMongoIndex(uiOption.AscendingKey.ToArray(), uiOption.DescendingKey.ToArray(),
uiOption.GeoSpatialKey,
option, RuntimeMongoDbContext.GetCurrentCollection());
}
strMessageTitle = "Index Add Completed!";
strMessageContent = "IndexName:" + uiOption.IndexName + " is add to collection.";
}
catch
{
strMessageTitle = "Index Add Failed!";
strMessageContent = "IndexName:" + uiOption.IndexName;
result = false;
}
}
else
{
strMessageTitle = "Index Add Failed!";
strMessageContent = "Please Check the index information.";
result = false;
}
return result;
}
public int GetIndex(DateTime dateTime, IndexOption option)
{
return(GetIndex_me(dateTime, option));
}
public MongoCollectionCompoundIndex(Expression <Func <T, object> > index, IndexOption direction)
{
Index = index;
Direction = direction;
}
/// <summary>
/// </summary>
/// <param name="KeyOptions"></param>
/// <param name="strMessageTitle"></param>
/// <param name="strMessageContent"></param>
/// <returns></returns>
public static bool CreateIndex(IndexOption KeyOptions, ref string strMessageTitle, ref string strMessageContent)
{
var option = new IndexOptionsBuilder();
option.SetBackground(KeyOptions.IsBackground);
option.SetDropDups(KeyOptions.IsDropDups);
option.SetSparse(KeyOptions.IsSparse);
option.SetUnique(KeyOptions.IsUnique);
if (KeyOptions.IsPartial)
{
IMongoQuery query = (QueryDocument)BsonDocument.Parse(KeyOptions.PartialCondition);
option.SetPartialFilterExpression(query);
}
if (KeyOptions.IsExpireData)
{
//TTL的限制条件很多
//http://docs.mongodb.org/manual/tutorial/expire-data/
//不能是组合键
var canUseTtl = true;
if (KeyOptions.AscendingKey.Count + KeyOptions.DescendingKey.Count +
(string.IsNullOrEmpty(KeyOptions.GeoSpatialKey) ? 0 : 1) != 1)
{
strMessageTitle = "Can't Set TTL";
strMessageContent = "the TTL index may not be compound (may not have multiple fields).";
canUseTtl = false;
}
else
{
//不能是_id
if (KeyOptions.FirstKey == ConstMgr.KeyId)
{
strMessageTitle = "Can't Set TTL";
strMessageContent =
"you cannot create this index on the _id field, or a field that already has an index.";
canUseTtl = false;
}
}
if (RuntimeMongoDbContext.GetCurrentCollection().IsCapped())
{
strMessageTitle = "Can't Set TTL";
strMessageContent =
"you cannot use a TTL index on a capped collection, because MongoDB cannot remove documents from a capped collection.";
canUseTtl = false;
}
if (canUseTtl)
{
strMessageTitle = "Constraints Of TimeToLive";
strMessageContent =
"the indexed field must be a date BSON type. If the field does not have a date type, the data will not expire." +
Environment.NewLine +
"if the field holds an array, and there are multiple date-typed data in the index, the document will expire when the lowest (i.e. earliest) matches the expiration threshold.";
option.SetTimeToLive(new TimeSpan(0, 0, KeyOptions.Ttl));
}
}
var totalIndex = KeyOptions.AscendingKey.Count + KeyOptions.DescendingKey.Count + KeyOptions.TextKey.Count;
totalIndex += string.IsNullOrEmpty(KeyOptions.GeoSpatialHaystackKey) ? 0 : 1;
totalIndex += string.IsNullOrEmpty(KeyOptions.GeoSpatialKey) ? 0 : 1;
totalIndex += string.IsNullOrEmpty(KeyOptions.GeoSpatialSphericalKey) ? 0 : 1;
if (string.IsNullOrEmpty(KeyOptions.IndexName) || totalIndex == 0 ||
RuntimeMongoDbContext.GetCurrentCollection().IndexExists(KeyOptions.IndexName))
{
strMessageTitle = "Index Add Failed!";
strMessageContent = "Please Check the index information.";
return(false);
}
option.SetName(KeyOptions.IndexName);
string errorMessage = string.Empty;
if (CreateMongoIndex(KeyOptions, option, RuntimeMongoDbContext.GetCurrentCollection(), ref errorMessage))
{
strMessageTitle = "Index Add Completed!";
strMessageContent = "IndexName:" + KeyOptions.IndexName + " is add to collection.";
return(true);
}
else
{
strMessageTitle = "Index Add Failed!";
strMessageContent = errorMessage;
return(false);
}
}
public int GetIndex(DateTime dateTime, IndexOption option = IndexOption.Null)
{
throw new NotImplementedException();
}
/// <summary>
/// Adds a query hint.
/// </summary>
/// <typeparam retval="T">Document type</typeparam>
/// <param retval="find">The type of document being enumerated.</param>
/// <param retval="hint">The query hint expression.</param>
/// <param retval="direction">Ascending or descending.</param>
/// <remarks>ATT: I *do not* like this, I would like to see this refactored to not do an explicit cast.</remarks>
/// <returns></returns>
public static IEnumerable <T> Hint <T>(this IEnumerable <T> find, Expression <Func <T, object> > hint, IndexOption direction)
{
var proxy = (MongoQueryExecutor <T, Expando>)find;
var translator = new MongoQueryTranslator();
var index = translator.Translate(hint);
translator.CollectionName = proxy.CollectionName;
proxy.AddHint(index.Query, direction);
return(find);
}
public void Visit(IndexOption node)
{
}
private string GetKeyAndIndexOption(string value, out IndexOption indexOption)
{
StringBuilder str = new StringBuilder(value);
int option = -1, index;
if (value.First() == '!')
{
str.Remove(0, 1);
index = GetIndex(str.ToString());
switch (index)
{
case VariableCollection.ImageIndex.BooleanOutput:
case VariableCollection.ImageIndex.BooleanFlag:
case VariableCollection.ImageIndex.BooleanInput:
option = 2;
break;
}
}
else if (value.First() == '~')
{
str.Remove(0, 1);
index = GetIndex(str.ToString());
switch (index)
{
case VariableCollection.ImageIndex.BooleanOutput:
case VariableCollection.ImageIndex.BooleanFlag:
case VariableCollection.ImageIndex.BooleanInput:
option = 3;
break;
}
}
else if (value.First() == '»')
{
str.Remove(0, 1);
index = GetIndex(str.ToString());
switch (index)
{
case VariableCollection.ImageIndex.EventOutput:
case VariableCollection.ImageIndex.MessageFlag:
case VariableCollection.ImageIndex.EventInput:
option = 0;
break;
}
}
else if (value.First() == '\'')
{
str.Remove(0, 1);
index = GetIndex(str.ToString());
switch (index)
{
case VariableCollection.ImageIndex.CounterFlag:
option = 5;
break;
}
}
else if (value.First() == '.')
{
str.Remove(0, 1);
index = GetIndex(str.ToString());
switch (index)
{
case VariableCollection.ImageIndex.CounterFlag:
option = 6;
break;
}
}
else if (value.Last() == '+')
{
str.Remove(str.Length - 1, 1);
index = GetIndex(str.ToString());
switch (index)
{
case VariableCollection.ImageIndex.CounterFlag:
option = 7;
break;
}
}
else if (value.Last() == '-')
{
str.Remove(str.Length - 1, 1);
index = GetIndex(str.ToString());
switch (index)
{
case VariableCollection.ImageIndex.CounterFlag:
option = 8;
break;
}
}
else
{
index = GetIndex(str.ToString());
switch (index)
{
case VariableCollection.ImageIndex.BooleanFlag:
case VariableCollection.ImageIndex.BooleanOutput:
case VariableCollection.ImageIndex.BooleanInput:
option = 1;
break;
}
}
indexOption = new IndexOption(index, option);
if (index == -1)
{
return("");
}
return(str.ToString());
}
/// <summary>
/// </summary>
/// <param name="KeyOptions"></param>
/// <param name="strMessageTitle"></param>
/// <param name="strMessageContent"></param>
/// <returns></returns>
public static bool CreateIndex(IndexOption KeyOptions, ref string strMessageTitle, ref string strMessageContent)
{
var option = new IndexOptionsBuilder();
option.SetBackground(KeyOptions.IsBackground);
option.SetDropDups(KeyOptions.IsDropDups);
option.SetSparse(KeyOptions.IsSparse);
option.SetUnique(KeyOptions.IsUnique);
if (KeyOptions.IsPartial)
{
IMongoQuery query = (QueryDocument)BsonDocument.Parse(KeyOptions.PartialCondition);
option.SetPartialFilterExpression(query);
}
if (KeyOptions.IsExpireData)
{
//TTL的限制条件很多
//http://docs.mongodb.org/manual/tutorial/expire-data/
//不能是组合键
var canUseTtl = true;
if (KeyOptions.AscendingKey.Count + KeyOptions.DescendingKey.Count +
(string.IsNullOrEmpty(KeyOptions.GeoSpatialKey) ? 0 : 1) != 1)
{
strMessageTitle = "Can't Set TTL";
strMessageContent = "the TTL index may not be compound (may not have multiple fields).";
canUseTtl = false;
}
else
{
//不能是_id
if (KeyOptions.FirstKey == ConstMgr.KeyId)
{
strMessageTitle = "Can't Set TTL";
strMessageContent =
"you cannot create this index on the _id field, or a field that already has an index.";
canUseTtl = false;
}
}
if (RuntimeMongoDbContext.GetCurrentCollection().IsCapped())
{
strMessageTitle = "Can't Set TTL";
strMessageContent =
"you cannot use a TTL index on a capped collection, because MongoDB cannot remove documents from a capped collection.";
canUseTtl = false;
}
if (canUseTtl)
{
strMessageTitle = "Constraints Of TimeToLive";
strMessageContent =
"the indexed field must be a date BSON type. If the field does not have a date type, the data will not expire." +
Environment.NewLine +
"if the field holds an array, and there are multiple date-typed data in the index, the document will expire when the lowest (i.e. earliest) matches the expiration threshold.";
option.SetTimeToLive(new TimeSpan(0, 0, KeyOptions.Ttl));
}
}
var totalIndex = KeyOptions.AscendingKey.Count + KeyOptions.DescendingKey.Count + KeyOptions.TextKey.Count;
totalIndex += string.IsNullOrEmpty(KeyOptions.GeoSpatialHaystackKey) ? 0 : 1;
totalIndex += string.IsNullOrEmpty(KeyOptions.GeoSpatialKey) ? 0 : 1;
totalIndex += string.IsNullOrEmpty(KeyOptions.GeoSpatialSphericalKey) ? 0 : 1;
totalIndex += string.IsNullOrEmpty(KeyOptions.HashedKey) ? 0 : 1;
if (string.IsNullOrEmpty(KeyOptions.IndexName) || totalIndex == 0 ||
RuntimeMongoDbContext.GetCurrentCollection().IndexExists(KeyOptions.IndexName))
{
strMessageTitle = "Index Add Failed!";
strMessageContent = "Please Check the index information.";
return false;
}
option.SetName(KeyOptions.IndexName);
string errorMessage = string.Empty;
if (CreateMongoIndex(KeyOptions, option, RuntimeMongoDbContext.GetCurrentCollection(), ref errorMessage))
{
strMessageTitle = "Index Add Completed!";
strMessageContent = "IndexName:" + KeyOptions.IndexName + " is add to collection.";
return true;
}
else
{
strMessageTitle = "Index Add Failed!";
strMessageContent = errorMessage;
return false;
}
}
public override int GetIndex(DateTime datetime, IndexOption option = IndexOption.Null)
{
this.Calculate();
return(base.GetIndex(datetime, option));
}
public Bar this[DateTime dateTime, IndexOption option = IndexOption.Null]
{
get
{
return this.items[this.GetIndex(dateTime, option)];
}
}
public int GetIndex(DateTime datetime, IndexOption option = IndexOption.Null)
{
int num = 0;
int num2 = 0;
int num3 = this.items.Count - 1;
bool flag = true;
while (flag)
{
if (num3 < num2)
{
return -1;
}
num = (num2 + num3) / 2;
switch (option)
{
case IndexOption.Null:
if (this.items[num].dateTime == datetime)
{
flag = false;
}
else
{
if (this.items[num].dateTime > datetime)
{
num3 = num - 1;
}
else
{
if (this.items[num].dateTime < datetime)
{
num2 = num + 1;
}
}
}
break;
case IndexOption.Next:
if (this.items[num].dateTime >= datetime && (num == 0 || this.items[num - 1].dateTime < datetime))
{
flag = false;
}
else
{
if (this.items[num].dateTime < datetime)
{
num2 = num + 1;
}
else
{
num3 = num - 1;
}
}
break;
case IndexOption.Prev:
if (this.items[num].dateTime <= datetime && (num == this.items.Count - 1 || this.items[num + 1].dateTime > datetime))
{
flag = false;
}
else
{
if (this.items[num].dateTime > datetime)
{
num3 = num - 1;
}
else
{
num2 = num + 1;
}
}
break;
}
}
return num;
}
//TODO: rewrite it
public virtual int GetIndex(DateTime datetime, IndexOption option = IndexOption.Null)
{
int num = 0;
int num2 = 0;
int num3 = (int)this.series.Count - 1;
bool flag = true;
while (flag)
{
if (num3 < num2)
{
return(-1);
}
num = (num2 + num3) / 2;
switch (option)
{
case IndexOption.Null:
if (this.series[(long)num].DateTime == datetime)
{
flag = false;
}
else if (this.series[(long)num].DateTime > datetime)
{
num3 = num - 1;
}
else if (this.series[(long)num].DateTime < datetime)
{
num2 = num + 1;
}
break;
case IndexOption.Next:
if (this.series[(long)num].DateTime >= datetime && (num == 0 || this.series[(long)(num - 1)].DateTime < datetime))
{
flag = false;
}
else if (this.series[(long)num].DateTime < datetime)
{
num2 = num + 1;
}
else
{
num3 = num - 1;
}
break;
case IndexOption.Prev:
if (this.series[(long)num].DateTime <= datetime && ((long)num == this.series.Count - 1L || this.series[(long)(num + 1)].DateTime > datetime))
{
flag = false;
}
else if (this.series[(long)num].DateTime > datetime)
{
num3 = num - 1;
}
else
{
num2 = num + 1;
}
break;
}
}
return(num);
}
public int GetIndex(DateTime dateTime, IndexOption option = IndexOption.Null)
{
throw new NotImplementedException();
}
public virtual void Visit(IndexOption indexOption)
{
}
//TODO: rewrite it
public virtual int GetIndex(DateTime datetime, IndexOption option = IndexOption.Null)
{
int num = 0;
int num2 = 0;
int num3 = (int)this.series.Count - 1;
bool flag = true;
while (flag)
{
if (num3 < num2)
{
return -1;
}
num = (num2 + num3) / 2;
switch (option)
{
case IndexOption.Null:
if (this.series[(long)num].DateTime == datetime)
{
flag = false;
}
else if (this.series[(long)num].DateTime > datetime)
{
num3 = num - 1;
}
else if (this.series[(long)num].DateTime < datetime)
{
num2 = num + 1;
}
break;
case IndexOption.Next:
if (this.series[(long)num].DateTime >= datetime && (num == 0 || this.series[(long)(num - 1)].DateTime < datetime))
{
flag = false;
}
else if (this.series[(long)num].DateTime < datetime)
{
num2 = num + 1;
}
else
{
num3 = num - 1;
}
break;
case IndexOption.Prev:
if (this.series[(long)num].DateTime <= datetime && ((long)num == this.series.Count - 1L || this.series[(long)(num + 1)].DateTime > datetime))
{
flag = false;
}
else if (this.series[(long)num].DateTime > datetime)
{
num3 = num - 1;
}
else
{
num2 = num + 1;
}
break;
}
}
return num;
}
public override void ExplicitVisit(IndexOption node) { this.action(node); }
