public ConfigItem[] GetLastUpdatedConfigItems(string appName, ref byte[] lastRowVersion, int limit)
{
try
{
using (ConfigDbContext context = new ConfigDbContext())
{
ConfigItem[] configItems;
if (lastRowVersion == null)
{
configItems = context.Database.SqlQuery <ConfigItem>(
string.Format("SELECT TOP {0} * FROM ConfigItem WHERE (AppName IS NULL OR AppName = @AppName) ORDER BY RowVersion", limit),
new SqlParameter("AppName", appName)).ToArray();
}
else
{
configItems = context.Database.SqlQuery <ConfigItem>(
string.Format("SELECT TOP {0} * FROM ConfigItem WHERE (AppName IS NULL OR AppName = @AppName) AND (RowVersion > @RowVersion) ORDER BY RowVersion", limit),
new SqlParameter("RowVersion", lastRowVersion), new SqlParameter("AppName", appName)).ToArray();
}
if (configItems != null && configItems.Length != 0)
{
lastRowVersion = configItems[configItems.Length - 1].RowVersion;
}
return(configItems);
}
}
catch (Exception ex)
{
LocalLoggingService.Error(ex.ToString());
}
return(null);
}
public ConfigItem[] GetChildConfigItems(string parentId)
{
using (ConfigDbContext context = new ConfigDbContext())
{
return(context.ConfigItems.Where(e => e.ParentId == parentId && !e.IsDeleted).OrderBy(e => e.CreatedOn)
.ToArray());
}
}
internal void InternalRemoveConfigItem(string id)
{
using (ConfigDbContext context = new ConfigDbContext())
{
ConfigItem configItem = context.ConfigItems.Where(e => e.Id == id && !e.IsDeleted).SingleOrDefault();
if (configItem == null)
{
return;
}
configItem.IsDeleted = true;
context.SaveChanges();
}
}
public void SetItemsInited(string appName, params string[] pathItemNames)
{
if (pathItemNames == null)
{
throw new ArgumentNullException("pathItemNames");
}
string id = ConfigHelper.GenerateConfigItemId(appName, pathItemNames);
using (ConfigDbContext context = new ConfigDbContext())
{
context.Database.ExecuteSqlCommand("UPDATE ConfigItem SET ItemsInited = 1 WHERE Id = @Id AND ItemsInited != 1",
new SqlParameter("Id", id));
}
}
public ConfigItem GetConfigItem(string id)
{
TransactionOptions transactionOptions = new TransactionOptions {
IsolationLevel = IsolationLevel.ReadUncommitted
};
using (TransactionScope transaction = new TransactionScope(TransactionScopeOption.Required, transactionOptions))
{
using (ConfigDbContext context = new ConfigDbContext())
{
ConfigItem item = context.ConfigItems.Where(e => e.Id == id && !e.IsDeleted).SingleOrDefault();
transaction.Complete();
return(item);
}
}
}
public ConfigItem[] GetTopLevelConfigItems(string appName)
{
using (ConfigDbContext context = new ConfigDbContext())
{
ConfigItem[] configItems;
if (appName == null)
{
configItems = context.Database.SqlQuery <ConfigItem>("SELECT * FROM ConfigItem WHERE (AppName IS NULL) AND (ParentId IS NULL) AND IsDeleted = 0").ToArray();
}
else
{
configItems = context.Database.SqlQuery <ConfigItem>("SELECT * FROM ConfigItem WHERE (AppName = @AppName) AND (ParentId IS NULL) AND IsDeleted = 0",
new SqlParameter("AppName", appName)).ToArray();
}
return(configItems);
}
}
public void SaveConfigItem(string id, string friendlyName, string desc, string val)
{
using (ConfigDbContext context = new ConfigDbContext())
{
ConfigItem item = context.ConfigItems.Where(e => e.Id == id && !e.IsDeleted)
.SingleOrDefault();
if (item == null)
{
return;
}
item.FriendlyName = friendlyName;
item.Description = desc;
item.Value = val;
item.ModifiedOn = DateTime.Now;
context.SaveChanges();
}
}
public ConfigItem GetConfigItem(string appName, params string[] pathItemNames)
{
if (pathItemNames == null)
{
throw new ArgumentNullException("pathItemNames");
}
string pathHash = ConfigHelper.GenerateConfigItemId(appName, pathItemNames);
TransactionOptions transactionOptions = new TransactionOptions {
IsolationLevel = IsolationLevel.ReadUncommitted
};
using (TransactionScope transactionScope = new TransactionScope(TransactionScopeOption.Required, transactionOptions))
{
using (ConfigDbContext context = new ConfigDbContext())
{
var configItem = context.ConfigItems.Where(e => e.Id == pathHash && !e.IsDeleted).SingleOrDefault();
transactionScope.Complete();
return(configItem);
}
}
}
public ConfigItem AddConfigItem(string appName, string[] parentPathItemNames, string name, string friendlyName, string desc, string val, string sourceId, string valType, string valTypeEnum, bool isCompositeValue)
{
List <string> pathItemNames = new List <string>();
string parentId = null;
if (parentPathItemNames != null && parentPathItemNames.Length != 0)
{
parentId = ConfigHelper.GenerateConfigItemId(appName, parentPathItemNames);
pathItemNames.AddRange(parentPathItemNames);
}
pathItemNames.Add(name);
string id = ConfigHelper.GenerateConfigItemId(appName, pathItemNames.ToArray());
if (string.IsNullOrEmpty(name))
{
throw new ArgumentNullException("name");
}
ConfigItem item;
bool isNew = true;
using (ConfigDbContext context = new ConfigDbContext())
{
item = context.ConfigItems.Where(e => e.Id == id).SingleOrDefault();
//节点已经存在，并且没有标记为删除，直接返回
if (item != null && !item.IsDeleted)
{
return(item);
}
//节点已经存在，但是标记为已删除,添加时将其恢复
if (item != null && item.IsDeleted)
{
isNew = false;
item.IsDeleted = false;
item.ItemsInited = false;
item.ModifiedOn = DateTime.Now;
}
else
{
item = new ConfigItem();
}
item.Id = id;
item.ParentId = parentId;
item.AppName = appName;
item.Name = name;
item.FriendlyName = friendlyName;
item.Description = desc;
item.Value = val;
item.SourceId = sourceId;
item.ValueType = valType;
item.ValueTypeEnum = valTypeEnum;
item.IsCompositeValue = isCompositeValue;
if (isNew)
{
context.ConfigItems.Add(item);
}
try
{
context.SaveChanges();
context.Entry(item).Reload();
return(item);
}
catch (Exception ex)
{
LocalLoggingService.Error("添加配置项失败，详细信息：{0}", ex);
throw;
}
}
return(item);
}