|
public SetName ( string value ) : |
||
| value | string | The name of the index. |
| Результат | ||
/// <summary>
/// 增加索引
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void cmdAddIndex_Click(object sender, EventArgs e)
{
List<String> AscendingKey = new List<String>();
List<String> DescendingKey = new List<String>();
for (int i = 0; i < 5; i++)
{
ctlIndexCreate ctl = (ctlIndexCreate)Controls.Find("ctlIndexCreate" + (i + 1).ToString(), true)[0];
if (ctl.KeyName != String.Empty)
{
if (ctl.IsAscendingKey)
{
AscendingKey.Add(ctl.KeyName);
}
else
{
DescendingKey.Add(ctl.KeyName);
}
}
}
IndexOptionsBuilder option = new IndexOptionsBuilder();
option.SetBackground(chkIsBackground.Checked);
option.SetDropDups(chkIsDroppedDups.Checked);
option.SetSparse(chkIsSparse.Checked);
option.SetUnique(chkIsUnique.Checked);
if (txtIndexName.Text != String.Empty && !SystemManager.GetCurrentCollection().IndexExists(txtIndexName.Text))
{
option.SetName(txtIndexName.Text);
}
MongoDBHelper.CreateMongoIndex(AscendingKey.ToArray(), DescendingKey.ToArray(), option);
RefreshList();
MessageBox.Show("Index Add Completed!");
}
/// <summary>
/// 增加索引
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void cmdAddIndex_Click(object sender, EventArgs e)
{
var AscendingKey = new List<String>();
var DescendingKey = new List<String>();
String GeoSpatialKey = string.Empty;
String FirstKey = string.Empty;
String TextKey = String.Empty;
for (int i = 0; i < 5; i++)
{
var ctl = (ctlIndexCreate) Controls.Find("ctlIndexCreate" + (i + 1), true)[0];
if (ctl.KeyName == String.Empty) continue;
FirstKey = ctl.KeyName.Trim();
switch (ctl.IndexKeyType)
{
case MongoDbHelper.IndexType.Ascending:
AscendingKey.Add(ctl.KeyName.Trim());
break;
case MongoDbHelper.IndexType.Descending:
DescendingKey.Add(ctl.KeyName.Trim());
break;
case MongoDbHelper.IndexType.GeoSpatial:
GeoSpatialKey = ctl.KeyName.Trim();
break;
case MongoDbHelper.IndexType.Text:
TextKey = ctl.KeyName.Trim();
break;
default:
break;
}
}
var option = new IndexOptionsBuilder();
option.SetBackground(chkIsBackground.Checked);
option.SetDropDups(chkIsDroppedDups.Checked);
option.SetSparse(chkIsSparse.Checked);
option.SetUnique(chkIsUnique.Checked);
if (chkExpireData.Checked)
{
//TTL的限制条件很多
//http://docs.mongodb.org/manual/tutorial/expire-data/
//不能是组合键
Boolean CanUseTTL = true;
if ((AscendingKey.Count + DescendingKey.Count + (String.IsNullOrEmpty(GeoSpatialKey) ? 0 : 1)) != 1)
{
MyMessageBox.ShowMessage("Can't Set TTL",
"the TTL index may not be compound (may not have multiple fields).");
CanUseTTL = false;
}
else
{
//不能是_id
if (FirstKey == MongoDbHelper.KEY_ID)
{
MyMessageBox.ShowMessage("Can't Set TTL",
"you cannot create this index on the _id field, or a field that already has an index.");
CanUseTTL = false;
}
}
if (SystemManager.GetCurrentCollection().IsCapped())
{
MyMessageBox.ShowMessage("Can't Set TTL",
"you cannot use a TTL index on a capped collection, because MongoDB cannot remove documents from a capped collection.");
CanUseTTL = false;
}
if (CanUseTTL)
{
MyMessageBox.ShowMessage("Constraints", "Constraints Of TimeToLive",
"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.",
true);
option.SetTimeToLive(new TimeSpan(0, 0, (int) numTTL.Value));
}
}
if (txtIndexName.Text != String.Empty &&
!SystemManager.GetCurrentCollection().IndexExists(txtIndexName.Text) &&
(AscendingKey.Count + DescendingKey.Count +
(String.IsNullOrEmpty(GeoSpatialKey) ? 0 : 1) +
(String.IsNullOrEmpty(TextKey) ? 0 : 1)) != 0)
{
option.SetName(txtIndexName.Text);
try
{
//暂时要求只能一个TextKey
if (!string.IsNullOrEmpty(TextKey))
{
var TextKeysDoc = new IndexKeysDocument {{TextKey, "text"}};
SystemManager.GetCurrentCollection().CreateIndex(TextKeysDoc, option);
}
else
{
MongoDbHelper.CreateMongoIndex(AscendingKey.ToArray(), DescendingKey.ToArray(), GeoSpatialKey,
option);
}
MyMessageBox.ShowMessage("Index Add Completed!",
"IndexName:" + txtIndexName.Text + " is add to collection.");
}
catch (Exception ex)
{
SystemManager.ExceptionDeal(ex, "Index Add Failed!", "IndexName:" + txtIndexName.Text);
}
RefreshList();
}
else
{
MyMessageBox.ShowMessage("Index Add Failed!", "Please Check the index information.");
}
}
/// <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;
}
/// <summary>
/// 创建索引
/// </summary>
/// <param name="collection"></param>
/// <param name="v"></param>
private void CreateIndex(MongoCollection collection, Variant v)
{
var indexs = collection.GetIndexes();
HashSet<string> hs = new HashSet<string>();
foreach (IndexInfo index in indexs)
{
hs.Add(index.Name);
}
foreach (var item in v)
{
string indexName = item.Key;
Variant keys = item.Value as Variant;
if (keys != null)
{
IndexOptionsBuilder indexOpt = new IndexOptionsBuilder();
indexOpt.SetName(indexName);
if (keys.ContainsKey("dropDups"))
{
if (keys["dropDups"] is bool)
{
indexOpt.SetDropDups((bool)keys["dropDups"]);
}
keys.Remove("dropDups");
}
if (keys.ContainsKey("background"))
{
if (keys["background"] is bool)
{
indexOpt.SetBackground((bool)keys["background"]);
}
keys.Remove("background");
}
if (keys.ContainsKey("unique"))
{
if (keys["unique"] is bool)
{
indexOpt.SetUnique((bool)keys["unique"]);
}
keys.Remove("unique");
}
if (keys.ContainsKey("sparse"))
{
if (keys["sparse"] is bool)
{
indexOpt.SetSparse((bool)keys["sparse"]);
}
keys.Remove("sparse");
}
bool find = false;
IndexKeysBuilder indexKey = new IndexKeysBuilder();
foreach (var dsa in keys)
{
string ckey = dsa.Key;
if (ckey != string.Empty && dsa.Value is int)
{
int dec = (int)dsa.Value;
if (dec == 1)
{
indexKey.Ascending(ckey);
find = true;
}
else if (dec == -1)
{
indexKey.Descending(ckey);
find = true;
}
}
}
if (find)
{
if (!hs.Contains(indexName))
collection.CreateIndex(indexKey, indexOpt);
}
else
{
if (hs.Contains(indexName))
collection.DropIndexByName(indexName);
}
}
}
}
/// <summary>
/// 添加索引
/// </summary>
/// <param name="AscendingKey"></param>
/// <param name="DescendingKey"></param>
/// <param name="IsBackground"></param>
/// <param name="IsDropDups"></param>
/// <param name="IsSparse"></param>
/// <param name="IsUnique"></param>
/// <param name="IndexName"></param>
/// <returns></returns>
public static Boolean CreateMongoIndex(String[] AscendingKey, String[] DescendingKey,
Boolean IsBackground = false, Boolean IsDropDups = false, Boolean IsSparse = false, Boolean IsUnique = false, String IndexName = "")
{
MongoCollection mongoCol = SystemManager.GetCurrentCollection();
IndexKeysBuilder indexkeys = new IndexKeysBuilder();
indexkeys.Ascending(AscendingKey);
indexkeys.Descending(DescendingKey);
IndexOptionsBuilder option = new IndexOptionsBuilder();
option.SetBackground(IsBackground);
option.SetDropDups(IsDropDups);
option.SetSparse(IsSparse);
option.SetUnique(IsUnique);
if (IndexName != String.Empty && !mongoCol.IndexExists(IndexName))
{
option.SetName(IndexName);
}
mongoCol.CreateIndex(indexkeys, option);
return true;
}
/// <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;
}
}