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Utility.cs
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Utility.cs
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using Org.Reddragonit.BpmEngine.Attributes;
using Org.Reddragonit.BpmEngine.Elements;
using Org.Reddragonit.BpmEngine.Elements.Processes.Events;
using Org.Reddragonit.BpmEngine.Interfaces;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Reflection;
using System.Text;
using System.Threading;
using System.Xml;
namespace Org.Reddragonit.BpmEngine
{
internal static class Utility
{
private const int GUID_ID_LENGTH = 16;
private static Dictionary<Type, List<Type>> _xmlChildren;
private static Dictionary<Type, XMLTag[]> _tagAttributes;
private static Type[] _globalXMLChildren;
private static Dictionary<Type, ConstructorInfo> _xmlConstructors;
private static Dictionary<string, Dictionary<string, Type>> _idealMap;
public static Dictionary<string,Dictionary<string,Type>> IdealMap { get { return _idealMap; } }
private static Thread _backgroundSuspendThread;
private static List<sProcessSuspendEvent> _suspendedEvents;
private static ManualResetEvent _backgroundMREEvent;
private static MT19937 _rand;
static Utility()
{
_rand = new MT19937(DateTime.Now.Ticks);
_backgroundMREEvent = new ManualResetEvent(true);
_suspendedEvents = new List<sProcessSuspendEvent>();
_backgroundSuspendThread = new Thread(new ThreadStart(_BackgroundSuspendStart));
_backgroundSuspendThread.Name = "Background Suspend Thread";
_backgroundSuspendThread.IsBackground = true;
_backgroundSuspendThread.Start();
_xmlConstructors = new Dictionary<Type, ConstructorInfo>();
_idealMap = new Dictionary<string, Dictionary<string, Type>>();
List<Type> tmp = new List<Type>();
_tagAttributes = new Dictionary<Type, XMLTag[]>();
foreach (Type t in Assembly.GetAssembly(typeof(Utility)).GetTypes())
{
if (new List<Type>(t.GetInterfaces()).Contains(typeof(IElement)))
{
XMLTag[] tags = (XMLTag[])t.GetCustomAttributes(typeof(XMLTag), false);
if (tags.Length > 0)
{
tmp.Add(t);
_tagAttributes.Add(t, tags);
Dictionary<string, Type> tmpTypes = new Dictionary<string, Type>();
if (_idealMap.ContainsKey(tags[0].Prefix.ToLower()))
{
tmpTypes = _idealMap[tags[0].Prefix.ToLower()];
_idealMap.Remove(tags[0].Prefix.ToLower());
}
_xmlConstructors.Add(t, t.GetConstructor(new Type[] { typeof(XmlElement), typeof(XmlPrefixMap), typeof(AElement) }));
tmpTypes.Add(tags[0].Name.ToLower(), t);
_idealMap.Add(tags[0].Prefix.ToLower(), tmpTypes);
}
}
}
_xmlChildren = new Dictionary<Type, List<Type>>();
List<Type> globalChildren = new List<Type>();
for (int x = 0; x < tmp.Count; x++)
{
Type t = tmp[x];
List<ValidParentAttribute> atts = new List<Attributes.ValidParentAttribute>();
if (t.GetCustomAttributes(typeof(ValidParentAttribute), false).Length == 0)
{
Type bt = t.BaseType;
while (bt != null)
{
if (bt.GetCustomAttributes(typeof(ValidParentAttribute), false).Length > 0)
{
atts.AddRange((ValidParentAttribute[])bt.GetCustomAttributes(typeof(ValidParentAttribute), false));
break;
}
else
bt = bt.BaseType;
}
}
else
atts.AddRange((ValidParentAttribute[])t.GetCustomAttributes(typeof(ValidParentAttribute), false));
foreach (ValidParentAttribute vpa in atts)
{
if (vpa.Parent == null)
globalChildren.Add(t);
else if (vpa.Parent.IsAbstract)
{
foreach (Type c in tmp)
{
if (c.IsSubclassOf(vpa.Parent))
{
if (!_xmlChildren.ContainsKey(c))
_xmlChildren.Add(c, new List<Type>());
List<Type> types = _xmlChildren[c];
_xmlChildren.Remove(c);
types.Add(t);
_xmlChildren.Add(c, types);
}
}
}
else if (vpa.Parent.IsInterface)
{
foreach (Type c in tmp)
{
if (new List<Type>(c.GetInterfaces()).Contains(vpa.Parent))
{
if (!_xmlChildren.ContainsKey(c))
_xmlChildren.Add(c, new List<Type>());
List<Type> types = _xmlChildren[c];
_xmlChildren.Remove(c);
types.Add(t);
_xmlChildren.Add(c, types);
}
}
}
else
{
if (!_xmlChildren.ContainsKey(vpa.Parent))
_xmlChildren.Add(vpa.Parent, new List<Type>());
List<Type> types = _xmlChildren[vpa.Parent];
_xmlChildren.Remove(vpa.Parent);
types.Add(t);
_xmlChildren.Add(vpa.Parent, types);
}
}
}
_globalXMLChildren = globalChildren.ToArray();
}
internal static XMLTag[] GetTagAttributes(Type t)
{
return (_tagAttributes.ContainsKey(t) ? _tagAttributes[t] : null);
}
public static void NextRandomBytes(byte[] buffer)
{
lock (_rand)
{
_rand.NextBytes(buffer);
}
}
public static byte[] NextRandomBytes(int length)
{
byte[] ret = new byte[length];
NextRandomBytes(ret);
return ret;
}
public static Guid NextRandomGuid()
{
return new Guid(NextRandomBytes(GUID_ID_LENGTH));
}
public static Type LocateElementType(Type parent,string tagName,XmlPrefixMap map)
{
DateTime start = DateTime.Now;
Type ret = null;
if (parent != null)
{
if (_xmlChildren.ContainsKey(parent))
{
foreach (Type t in _xmlChildren[parent])
{
foreach (XMLTag xt in _tagAttributes[t])
{
if (xt.Matches(map, tagName))
{
ret = t;
break;
}
}
if (ret != null)
break;
}
}
}
foreach (Type t in _globalXMLChildren)
{
foreach (XMLTag xt in _tagAttributes[t])
{
if (xt.Matches(map, tagName))
{
ret = t;
break;
}
}
if (ret != null)
break;
}
Console.WriteLine("Time to translate [{0}] to [{1}] is {2}ms", new object[] { tagName, (ret == null ? null : ret.FullName), DateTime.Now.Subtract(start).TotalMilliseconds });
return ret;
}
//called to open a stream of a given embedded resource, again searches through all assemblies
public static Stream LocateEmbededResource(string name)
{
Stream ret = typeof(Utility).Assembly.GetManifestResourceStream(name);
if (ret == null)
{
foreach (Assembly ass in AppDomain.CurrentDomain.GetAssemblies())
{
try
{
if (ass.GetName().Name != "mscorlib" && !ass.GetName().Name.StartsWith("System.") && ass.GetName().Name != "System" && !ass.GetName().Name.StartsWith("Microsoft"))
{
ret = ass.GetManifestResourceStream(name);
if (ret != null)
break;
}
}
catch (Exception e)
{
if (e.Message != "The invoked member is not supported in a dynamic assembly.")
{
throw e;
}
}
}
}
return ret;
}
internal static IElement ConstructElementType(XmlElement element, XmlPrefixMap map,AElement parent)
{
Type t = null;
if (BusinessProcess.ElementMapCache != null)
{
if (BusinessProcess.ElementMapCache.IsCached(element.Name))
t = BusinessProcess.ElementMapCache[element.Name];
}else
t = Utility.LocateElementType((parent == null ? null : parent.GetType()), element.Name, map);
if (t != null)
return (IElement)_xmlConstructors[t].Invoke(new object[] { element, map, parent });
return null;
}
public static string FindXPath(Definition definition, XmlNode node)
{
StringBuilder builder = new StringBuilder();
while (node != null)
{
switch (node.NodeType)
{
case XmlNodeType.Attribute:
builder.Insert(0, "/@" + node.Name);
node = ((XmlAttribute)node).OwnerElement;
break;
case XmlNodeType.Element:
if (node.Attributes["id"] == null)
{
int index = FindElementIndex(definition,(XmlElement)node);
builder.Insert(0, "/" + node.Name + "[" + index + "]");
}
else
builder.Insert(0, string.Format("/{0}[@id='{1}']", node.Name, node.Attributes["id"].Value));
node = node.ParentNode;
break;
case XmlNodeType.Document:
return builder.ToString();
default:
throw (definition == null ? new ArgumentException("Only elements and attributes are supported") : definition.Exception(new ArgumentException("Only elements and attributes are supported")));
}
}
throw (definition==null ? new ArgumentException("Node was not in a document") : definition.Exception(new ArgumentException("Node was not in a document")));
}
public static int FindElementIndex(Definition definition,XmlElement element)
{
if (definition!=null)
definition.Debug("Locating Element Index for element {0}", new object[] { element.Name });
XmlNode parentNode = element.ParentNode;
if (parentNode is XmlDocument)
{
return 1;
}
XmlElement parent = (XmlElement)parentNode;
int index = 1;
foreach (XmlNode candidate in parent.ChildNodes)
{
if (candidate is XmlElement && candidate.Name == element.Name)
{
if (candidate == element)
return index;
index++;
}
}
throw (definition==null ? new ArgumentException("Couldn't find element within parent") : definition.Exception(new ArgumentException("Couldn't find element within parent")));
}
internal static object[] GetCustomAttributesForClass(Type clazz,Type attributeType)
{
List<object> ret = new List<object>(clazz.GetCustomAttributes(attributeType,false));
Type parent = clazz.BaseType;
if (parent != typeof(object))
{
foreach (object obj in GetCustomAttributesForClass(parent,attributeType))
{
if (!ret.Contains(obj))
ret.Add(obj);
}
}
return ret.ToArray();
}
internal static object ExtractVariableValue(VariableTypes type,string text)
{
if (type == VariableTypes.Null)
return null;
object ret = null;
switch (type)
{
case VariableTypes.Boolean:
ret = bool.Parse(text);
break;
case VariableTypes.Byte:
ret = Convert.FromBase64String(text);
break;
case VariableTypes.Char:
ret = text[0];
break;
case VariableTypes.DateTime:
ret = DateTime.Parse(text);
break;
case VariableTypes.Decimal:
ret = decimal.Parse(text);
break;
case VariableTypes.Double:
ret = double.Parse(text);
break;
case VariableTypes.Float:
ret = float.Parse(text);
break;
case VariableTypes.Integer:
ret = int.Parse(text);
break;
case VariableTypes.Long:
ret = long.Parse(text);
break;
case VariableTypes.Short:
ret = short.Parse(text);
break;
case VariableTypes.UnsignedInteger:
ret = uint.Parse(text);
break;
case VariableTypes.UnsignedLong:
ret = ulong.Parse(text);
break;
case VariableTypes.UnsignedShort:
ret = ushort.Parse(text);
break;
case VariableTypes.String:
ret = text;
break;
case VariableTypes.Hashtable:
System.Runtime.Serialization.Formatters.Binary.BinaryFormatter bf = new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();
ret = bf.Deserialize(new MemoryStream(Convert.FromBase64String(text)));
break;
}
return ret;
}
internal static void EncodeVariableValue(object value,XmlElement variableContainer,XmlDocument doc)
{
variableContainer.Attributes.Append(doc.CreateAttribute("type"));
if (value == null)
variableContainer.Attributes["type"].Value = VariableTypes.Null.ToString();
else
{
if (value.GetType().IsArray && value.GetType().FullName != "System.Byte[]" && value.GetType().FullName!="System.String")
{
variableContainer.Attributes.Append(doc.CreateAttribute("isArray"));
variableContainer.Attributes["isArray"].Value = true.ToString();
if (value.GetType().GetElementType().FullName == typeof(sFile).FullName)
{
variableContainer.Attributes["type"].Value = VariableTypes.File.ToString();
foreach (sFile sf in (IEnumerable)value)
{
variableContainer.AppendChild(doc.CreateElement("Value"));
variableContainer.ChildNodes[variableContainer.ChildNodes.Count - 1].AppendChild(sf.ToElement(doc));
}
}
else
{
switch (value.GetType().GetElementType().FullName)
{
case "System.Boolean":
variableContainer.Attributes["type"].Value = VariableTypes.Boolean.ToString();
foreach (bool b in (IEnumerable)value)
{
variableContainer.AppendChild(doc.CreateElement("Value"));
variableContainer.ChildNodes[variableContainer.ChildNodes.Count - 1].AppendChild(doc.CreateCDataSection(b.ToString()));
}
break;
case "System.Byte[]":
variableContainer.Attributes["type"].Value = VariableTypes.Byte.ToString();
foreach (byte[] b in (IEnumerable)value)
{
variableContainer.AppendChild(doc.CreateElement("Value"));
variableContainer.ChildNodes[variableContainer.ChildNodes.Count - 1].AppendChild(doc.CreateCDataSection(Convert.ToBase64String(b)));
}
break;
case "System.Char":
variableContainer.Attributes["type"].Value = VariableTypes.Char.ToString();
foreach (char b in (IEnumerable)value)
{
variableContainer.AppendChild(doc.CreateElement("Value"));
variableContainer.ChildNodes[variableContainer.ChildNodes.Count - 1].AppendChild(doc.CreateCDataSection(b.ToString()));
}
break;
case "System.DateTime":
variableContainer.Attributes["type"].Value = VariableTypes.DateTime.ToString();
foreach (DateTime b in (IEnumerable)value)
{
variableContainer.AppendChild(doc.CreateElement("Value"));
variableContainer.ChildNodes[variableContainer.ChildNodes.Count - 1].AppendChild(doc.CreateCDataSection(b.ToString()));
}
break;
case "System.Decimal":
variableContainer.Attributes["type"].Value = VariableTypes.Decimal.ToString();
foreach (Decimal b in (IEnumerable)value)
{
variableContainer.AppendChild(doc.CreateElement("Value"));
variableContainer.ChildNodes[variableContainer.ChildNodes.Count - 1].AppendChild(doc.CreateCDataSection(b.ToString()));
}
break;
case "System.Double":
variableContainer.Attributes["type"].Value = VariableTypes.Double.ToString();
foreach (double b in (IEnumerable)value)
{
variableContainer.AppendChild(doc.CreateElement("Value"));
variableContainer.ChildNodes[variableContainer.ChildNodes.Count - 1].AppendChild(doc.CreateCDataSection(b.ToString()));
}
break;
case "System.Single":
variableContainer.Attributes["type"].Value = VariableTypes.Float.ToString();
foreach (Single b in (IEnumerable)value)
{
variableContainer.AppendChild(doc.CreateElement("Value"));
variableContainer.ChildNodes[variableContainer.ChildNodes.Count - 1].AppendChild(doc.CreateCDataSection(b.ToString()));
}
break;
case "System.Int32":
variableContainer.Attributes["type"].Value = VariableTypes.Integer.ToString();
foreach (int b in (IEnumerable)value)
{
variableContainer.AppendChild(doc.CreateElement("Value"));
variableContainer.ChildNodes[variableContainer.ChildNodes.Count - 1].AppendChild(doc.CreateCDataSection(b.ToString()));
}
break;
case "System.Int64":
variableContainer.Attributes["type"].Value = VariableTypes.Long.ToString();
foreach (long b in (IEnumerable)value)
{
variableContainer.AppendChild(doc.CreateElement("Value"));
variableContainer.ChildNodes[variableContainer.ChildNodes.Count - 1].AppendChild(doc.CreateCDataSection(b.ToString()));
}
break;
case "System.Int16":
variableContainer.Attributes["type"].Value = VariableTypes.Short.ToString();
foreach (short b in (IEnumerable)value)
{
variableContainer.AppendChild(doc.CreateElement("Value"));
variableContainer.ChildNodes[variableContainer.ChildNodes.Count - 1].AppendChild(doc.CreateCDataSection(b.ToString()));
}
break;
case "System.UInt32":
variableContainer.Attributes["type"].Value = VariableTypes.UnsignedInteger.ToString();
foreach (uint b in (IEnumerable)value)
{
variableContainer.AppendChild(doc.CreateElement("Value"));
variableContainer.ChildNodes[variableContainer.ChildNodes.Count - 1].AppendChild(doc.CreateCDataSection(b.ToString()));
}
break;
case "System.UInt64":
variableContainer.Attributes["type"].Value = VariableTypes.UnsignedLong.ToString();
foreach (ulong b in (IEnumerable)value)
{
variableContainer.AppendChild(doc.CreateElement("Value"));
variableContainer.ChildNodes[variableContainer.ChildNodes.Count - 1].AppendChild(doc.CreateCDataSection(b.ToString()));
}
break;
case "System.UInt16":
variableContainer.Attributes["type"].Value = VariableTypes.UnsignedShort.ToString();
foreach (ushort b in (IEnumerable)value)
{
variableContainer.AppendChild(doc.CreateElement("Value"));
variableContainer.ChildNodes[variableContainer.ChildNodes.Count - 1].AppendChild(doc.CreateCDataSection(b.ToString()));
}
break;
case "System.String":
variableContainer.Attributes["type"].Value = VariableTypes.String.ToString();
foreach (string b in (IEnumerable)value)
{
variableContainer.AppendChild(doc.CreateElement("Value"));
variableContainer.ChildNodes[variableContainer.ChildNodes.Count - 1].AppendChild(doc.CreateCDataSection(b.ToString()));
}
break;
case "System.Collections.Hashtable":
variableContainer.Attributes["type"].Value = VariableTypes.Hashtable.ToString();
foreach (Hashtable ht in (IEnumerable)value)
{
variableContainer.AppendChild(doc.CreateElement("Value"));
variableContainer.ChildNodes[variableContainer.ChildNodes.Count - 1].AppendChild(doc.CreateCDataSection(_EncodeHashtable(ht)));
}
break;
}
}
}
else
{
variableContainer.Attributes.Append(doc.CreateAttribute("isArray"));
variableContainer.Attributes["isArray"].Value = false.ToString();
if (value is sFile)
{
variableContainer.Attributes["type"].Value = VariableTypes.File.ToString();
variableContainer.AppendChild(((sFile)value).ToElement(doc));
}
else
{
string text = value.ToString();
switch (value.GetType().FullName)
{
case "System.Boolean":
variableContainer.Attributes["type"].Value = VariableTypes.Boolean.ToString();
break;
case "System.Byte[]":
variableContainer.Attributes["type"].Value = VariableTypes.Byte.ToString();
text = Convert.ToBase64String((byte[])value);
break;
case "System.Char":
variableContainer.Attributes["type"].Value = VariableTypes.Char.ToString();
break;
case "System.DateTime":
variableContainer.Attributes["type"].Value = VariableTypes.DateTime.ToString();
break;
case "System.Decimal":
variableContainer.Attributes["type"].Value = VariableTypes.Decimal.ToString();
break;
case "System.Double":
variableContainer.Attributes["type"].Value = VariableTypes.Double.ToString();
break;
case "System.Single":
variableContainer.Attributes["type"].Value = VariableTypes.Float.ToString();
break;
case "System.Int32":
variableContainer.Attributes["type"].Value = VariableTypes.Integer.ToString();
break;
case "System.Int64":
variableContainer.Attributes["type"].Value = VariableTypes.Long.ToString();
break;
case "System.Int16":
variableContainer.Attributes["type"].Value = VariableTypes.Short.ToString();
break;
case "System.UInt32":
variableContainer.Attributes["type"].Value = VariableTypes.UnsignedInteger.ToString();
break;
case "System.UInt64":
variableContainer.Attributes["type"].Value = VariableTypes.UnsignedLong.ToString();
break;
case "System.UInt16":
variableContainer.Attributes["type"].Value = VariableTypes.UnsignedShort.ToString();
break;
case "System.String":
variableContainer.Attributes["type"].Value = VariableTypes.String.ToString();
break;
case "System.Collections.Hashtable":
variableContainer.Attributes["type"].Value = VariableTypes.Hashtable.ToString();
text = _EncodeHashtable((Hashtable)value);
break;
}
variableContainer.AppendChild(doc.CreateCDataSection(text));
}
}
}
}
private static string _EncodeHashtable(Hashtable hash)
{
MemoryStream ms = new MemoryStream();
System.Runtime.Serialization.Formatters.Binary.BinaryFormatter bf = new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();
bf.Serialize(ms, hash);
return Convert.ToBase64String(ms.ToArray());
}
private static readonly TimeSpan _maxSpan = new TimeSpan(int.MaxValue);
internal static void Sleep(TimeSpan value,BusinessProcess process,AEvent evnt)
{
lock (_suspendedEvents)
{
_suspendedEvents.Add(new sProcessSuspendEvent(process, evnt, value));
}
_backgroundMREEvent.Set();
}
internal static void UnloadProcess(BusinessProcess process)
{
lock (_suspendedEvents) {
for(int x = 0; x < _suspendedEvents.Count; x++)
{
if (_suspendedEvents[x].Process.Equals(process))
{
_suspendedEvents.RemoveAt(x);
_backgroundMREEvent.Set();
break;
}
}
}
}
internal static void _BackgroundSuspendStart()
{
while (true)
{
int sleep = -1;
lock (_suspendedEvents)
{
foreach(sProcessSuspendEvent pse in _suspendedEvents)
{
if (pse.EndTime.Ticks < DateTime.Now.Ticks)
{
sleep = 0;
break;
}
else if (sleep == -1)
sleep = (int)Math.Min(pse.EndTime.Subtract(DateTime.Now).TotalMilliseconds, (double)int.MaxValue);
else
sleep = Math.Min(sleep, (int)Math.Min(pse.EndTime.Subtract(DateTime.Now).TotalMilliseconds, (double)int.MaxValue));
}
}
if (sleep != 0)
{
if (sleep != -1)
_backgroundMREEvent.WaitOne(sleep);
else
_backgroundMREEvent.WaitOne();
}
_backgroundMREEvent.Reset();
lock (_suspendedEvents)
{
for(int x = 0; x < _suspendedEvents.Count; x++)
{
sProcessSuspendEvent spe = _suspendedEvents[x];
if (spe.EndTime.Ticks < DateTime.Now.Ticks)
{
try
{
spe.Process.CompleteTimedEvent(spe.Event);
_suspendedEvents.RemoveAt(x);
x--;
}
catch (Exception e) { spe.Process.WriteLogException(spe.Event,new StackFrame(1,true),DateTime.Now,e); }
}
}
}
}
}
}
}