public static CacheSetting GetSetting()
{
if (s_HasInit == false)
{
lock (s_SyncObj)
{
if (s_HasInit == false)
{
s_CacheSetting = ConfigurationManager.GetSection("cache") as CacheSetting;
s_HasInit = true;
}
}
}
return(s_CacheSetting);
}
public static ICache GetInstance(string name)
{
CacheSetting setting = CacheSection.GetSetting();
if (name == null || name.Trim().Length <= 0)
{
name = setting.DefaultCacheName;
}
if (name == null)
{
throw new ConfigurationErrorsException("The default cache name is not configured in config file.");
}
if (s_CacheProviders.ContainsKey(name))
{
return(s_CacheProviders[name]);
}
lock (s_SyncObj)
{
if (s_CacheProviders.ContainsKey(name))
{
return(s_CacheProviders[name]);
}
if (!setting.ContainsKey(name))
{
throw new ConfigurationErrorsException("The cache named '" + name + "' is not be found in config file.");
}
CacheItemConfig item = setting[name];
if (item.Type == null || item.Type.Trim().Length <= 0)
{
throw new ConfigurationErrorsException("The type of cache '" + name + "' cannot be empty.");
}
Type p = Type.GetType(item.Type, true);
if (!typeof(ICache).IsAssignableFrom(p))
{
throw new ConfigurationErrorsException("The type '" + p.AssemblyQualifiedName + "' of cache '" + name + "' dosen't implement the interface '" + typeof(ICache).AssemblyQualifiedName + "'.");
}
ICache rst = (ICache)Activator.CreateInstance(p);
rst.InitFromConfig(name, item.Parameters);
s_CacheProviders.Add(name, rst);
return(rst);
}
}
public object Create(object parent, object configContext, XmlNode section)
{
CacheSetting setting = new CacheSetting();
if (section != null)
{
string tmp = GetNodeAttribute(section, "default");
setting.DefaultCacheName = (tmp != null && tmp.Length > 0) ? tmp : null;
XmlNode[] nodeList = GetChildrenNodes(section, "item");
foreach (XmlNode node in nodeList)
{
string name = GetNodeAttribute(node, "name");
if (name == null || name.Length <= 0)
{
throw new ConfigurationErrorsException("The attribute 'name' of the xml node 'cache/item' cannot be empty in config file.");
}
if (setting.ContainsKey(name))
{
throw new ConfigurationErrorsException("Duplicated name '" + name + "' of the xml node 'cache/item' in config file.");
}
string type = GetNodeAttribute(node, "type");
if (type == null || type.Length <= 0)
{
throw new ConfigurationErrorsException("The attribute 'type' of the xml node 'cache/item' cannot be empty in config file.");
}
NameValueCollection parms = new NameValueCollection();
XmlNode[] paramList = GetChildrenNodes(node.SelectSingleNode("parameters"), "add");
foreach (XmlNode pa in paramList)
{
parms.Add(GetNodeAttribute(pa, "key"), GetNodeAttribute(pa, "value"));
}
setting.Add(name, new CacheItemConfig
{
Name = name,
Type = type,
Parameters = parms
});
}
}
return(setting);
}
