/// <summary>
/// 获取工作流配置
/// </summary>
/// <returns></returns>
public WorkflowConfig GetConfig()
{
string cacheName = "workflowconfig";
WorkflowConfig config = null;
_memoryCache.TryGetValue <WorkflowConfig>(cacheName, out config);
if (config == null)
{
string fileName = GetFileName("workflowconfig.xml");
config = ReadConfig(fileName);
_memoryCache.Set(cacheName, config);
}
return(config);
//if (HttpContext.Current == null)
//{
// string fileName = GetFileName("workflowconfig.xml");
// WorkflowConfig config = ReadConfig(fileName);
// return config;
//}
//if (HttpContext.Current.Cache[cacheName] == null)
//{
// string fileName = GetFileName("workflowconfig.xml");
// WorkflowConfig config = ReadConfig(fileName);
// CacheDependency fileDependency = new System.Web.Caching.CacheDependency(fileName);
// HttpContext.Current.Cache.Add(cacheName, config, fileDependency, DateTime.MaxValue, System.Web.Caching.Cache.NoSlidingExpiration, CacheItemPriority.High, null);
//}
//return (WorkflowConfig)HttpContext.Current.Cache[cacheName];
}
private WorkflowConfig ReadConfig(string fileName)
{
WorkflowConfig config = null;
XmlSerializer xmlSerializer = new XmlSerializer(typeof(WorkflowConfig));
using (XmlReader reader = XmlReader.Create(fileName))
{
config = (WorkflowConfig)xmlSerializer.Deserialize(reader);
}
return(config);
}
/// <summary>
/// Gets the root.
/// </summary>
/// <param name="applicationName">Name of the application.</param>
/// <returns></returns>
public string GetRoot(string applicationName)
{
WorkflowConfig config = GetConfig();
if (config == null)
{
throw new ArgumentException("workflow config xml file is miss or wrong format");
}
List <string> names = new List <string>();
WorkflowApplication application = config.Get(applicationName);
return(application.Root);
}
/// <summary>
/// Gets all workflow.
/// </summary>
/// <returns></returns>
public string[] GetAllWorkflowDefineName()
{
WorkflowConfig config = GetConfig();
if (config == null)
{
throw new ArgumentException("workflow config xml file is miss or wrong format");
}
List <string> workflows = new List <string>();
List <WorkflowDefineConfig> configs = new List <WorkflowDefineConfig>();
foreach (WorkflowApplication app in config.Applications)
{
configs.AddRange(app.Defines);
}
foreach (WorkflowDefineConfig one in configs)
{
if (one.Enabled)
{
workflows.Add(one.Name);
}
}
return(workflows.ToArray());
}
/// <summary>
/// Gets all workflow.
/// </summary>
/// <returns></returns>
public WorkFlowDefine[] GetAllWorkflow(string applicationName)
{
WorkflowConfig config = GetConfig();
if (config == null)
{
throw new ArgumentException("workflow config xml file is miss or wrong format");
}
List <WorkFlowDefine> workflows = new List <WorkFlowDefine>();
WorkflowApplication application = config.Get(applicationName);
if (application == null)
{
throw new NullReferenceException(string.Format("{0} cannot found", applicationName));
}
foreach (WorkflowDefineConfig one in application.Defines)
{
if (one.Enabled)
{
workflows.Add(GetWorkflowDefine(one.Name));
}
}
return(workflows.ToArray());
}
/// <summary>
/// 按照工作流名称获取工作流定义
/// </summary>
/// <param name="workflowName">工作流名称</param>
/// <returns></returns>
public WorkFlowDefine GetWorkflowDefine(string workflowName)
{
string cacheName = GetCacheName(workflowName);
WorkFlowDefine wf = null;
_memoryCache.TryGetValue <WorkFlowDefine>(cacheName, out wf);
if (wf == null)
{
WorkflowConfig config = GetConfig();
bool found = false;
foreach (WorkflowApplication app in config.Applications)
{
for (int i = 0; i < app.Defines.Count; i++)
{
if (app.Defines[i].Name.Equals(workflowName, StringComparison.OrdinalIgnoreCase))
{
string fullFileName = GetFileName(app.Defines[i].File);
//CacheDependency fileDependency = new System.Web.Caching.CacheDependency(fullFileName);
// HttpContext.Current.Cache.Add(cacheName, ReadFromFile(app, fullFileName), fileDependency, DateTime.MaxValue, System.Web.Caching.Cache.NoSlidingExpiration, CacheItemPriority.High, null);
wf = ReadFromFile(app, fullFileName);
_memoryCache.Set <WorkFlowDefine>(cacheName, wf);
found = true;
break;
}
}
}
if (!found)
{
throw new ArgumentException(string.Format("workflowName '{0}' must in config", workflowName));
}
}
return(wf);
// if (HttpContext.Current == null) //非http应用,无法从缓存中获取,只能读取.
//{
// //List<WorkflowDefineConfig> defines = new List<WorkflowDefineConfig>();
// WorkflowConfig config = GetConfig();
// foreach (WorkflowApplication app in config.Applications)
// {
// for (int i = 0; i < app.Defines.Count; i++)
// {
// if (app.Defines[i].Name.Equals(workflowName, StringComparison.OrdinalIgnoreCase))
// {
// string fullFileName = GetFileName(app.Defines[i].File);
// return ReadFromFile(app, fullFileName);
// }
// }
// }
// throw new ArgumentException(string.Format("workflowName '{0}' must in config", workflowName));
//}
////有缓冲对象,则从缓存对象中获取
////获取缓存名字
//string cacheName = GetCacheName(workflowName);
////从缓存中读取
//if (HttpContext.Current.Cache[cacheName] == null)
//{
// WorkflowConfig config = GetConfig();
// bool found = false;
// foreach (WorkflowApplication app in config.Applications)
// {
// for (int i = 0; i < app.Defines.Count; i++)
// {
// if (app.Defines[i].Name.Equals(workflowName, StringComparison.OrdinalIgnoreCase))
// {
// string fullFileName = GetFileName(app.Defines[i].File);
// CacheDependency fileDependency = new System.Web.Caching.CacheDependency(fullFileName);
// HttpContext.Current.Cache.Add(cacheName, ReadFromFile(app,fullFileName), fileDependency, DateTime.MaxValue, System.Web.Caching.Cache.NoSlidingExpiration, CacheItemPriority.High, null);
// found = true;
// break;
// }
// }
// }
// if(!found)
// throw new ArgumentException(string.Format("workflowName '{0}' must in config", workflowName));
//}
//return (WorkFlowDefine)HttpContext.Current.Cache[cacheName];
}
