Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WF / RunTime / Tracking / PropertyHelper.cs / 1305376 / PropertyHelper.cs
using System; using System.Collections; using System.Collections.Generic; using System.Collections.ObjectModel; using System.Text; using System.Xml; using System.Xml.Schema; using System.IO; using System.Reflection; using System.Diagnostics; using System.Runtime.Serialization; using System.Security.Permissions; using System.Globalization; //using System.Workflow.Activities; using System.Workflow.ComponentModel; using System.Workflow.Runtime; using System.Workflow.Runtime.Hosting; using Hosting = System.Workflow.Runtime.Hosting; namespace System.Workflow.Runtime.Tracking { internal sealed class PropertyHelper { private PropertyHelper() { } #region Internal Static Methods internal static void GetProperty(string name, Activity activity, TrackingAnnotationCollection annotations, out TrackingDataItem item) { item = null; object tmp = PropertyHelper.GetProperty(name, activity); item = new TrackingDataItem(); item.FieldName = name; item.Data = tmp; foreach (string s in annotations) item.Annotations.Add(s); } internal static object GetProperty(string name, object obj) { if (null == name) throw new ArgumentNullException("name"); if (null == obj) throw new ArgumentNullException("obj"); // // Split the names string[] names = name.Split(new char[] { '.' }); object currObj = obj; for (int i = 0; i < names.Length; i++) { if ((null == names[i]) || (0 == names[i].Length)) throw new InvalidOperationException(ExecutionStringManager.TrackingProfileInvalidMember); object tmp = null; PropertyHelper.GetPropertyOrField(names[i], currObj, out tmp); // // Attempt to resolve runtime values (ParameterBinding, ParameterDeclaration and Bind) if (currObj is Activity) currObj = GetRuntimeValue(tmp, (Activity)currObj); else currObj = tmp; } return currObj; } internal static void GetPropertyOrField(string name, object o, out object obj) { obj = null; if (null == name) throw new ArgumentNullException("name"); if (null == o) throw new ArgumentNullException("o"); Type t = o.GetType(); string tmp = null, realName = null; bool isCollection = false; int index = -1; if (TryParseIndex(name, out tmp, out index)) isCollection = true; else tmp = name; object val = null; if ((null != tmp) && (tmp.Length > 0)) { if (!NameIsDefined(tmp, o, out realName)) throw new MissingMemberException(o.GetType().Name, tmp); // // Attempt to match default, no parameter (if overloaded) // Indexer accesses will fail - we do not handle indexers // Do case sensitive here because we have the real name of the matching member val = t.InvokeMember(realName, BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.GetProperty | BindingFlags.GetField | BindingFlags.Instance | BindingFlags.Static, null, o, null, System.Globalization.CultureInfo.InvariantCulture); } else val = o; // root object is a collection - all that is passed for name is "[1]" if (isCollection) { IEnumerable collection = val as IEnumerable; if (null != collection) GetEnumerationMember(collection, index, out obj); } else obj = val; } internal static void GetEnumerationMember(IEnumerable collection, int index, out object obj) { obj = null; if (null == collection) throw new ArgumentNullException("collection"); IEnumerator e = collection.GetEnumerator(); int i = 0; while (e.MoveNext()) { if (i++ == index) { obj = e.Current; return; } } throw new IndexOutOfRangeException(); } internal static object GetRuntimeValue(object o, Activity activity) { if (null == o) return o; object tmp = o; if (o is ActivityBind) { if (null == activity) throw new ArgumentNullException("activity"); tmp = ((ActivityBind)o).GetRuntimeValue(activity); } else if (o is WorkflowParameterBinding) { tmp = ((WorkflowParameterBinding)o).Value; } return tmp; } internal static void GetAllMembers(Activity activity, IListitems, TrackingAnnotationCollection annotations) { Type t = activity.GetType(); // // Get all fields FieldInfo[] fields = t.GetFields(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Static | BindingFlags.GetField); foreach (FieldInfo f in fields) { if (!PropertyHelper.IsInternalVariable(f.Name)) { TrackingDataItem data = new TrackingDataItem(); data.FieldName = f.Name; data.Data = GetRuntimeValue(f.GetValue(activity), activity); foreach (string s in annotations) data.Annotations.Add(s); items.Add(data); } } // // Get all properties (except indexers) PropertyInfo[] properties = t.GetProperties(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Static | BindingFlags.GetProperty); foreach (PropertyInfo p in properties) { if (!IsInternalVariable(p.Name)) { // // Skip indexers, since private data members // are exposed the data is still available. if (p.GetIndexParameters().Length > 0) continue; TrackingDataItem data = new TrackingDataItem(); data.FieldName = p.Name; data.Data = GetRuntimeValue(p.GetValue(activity, null), activity); foreach (string s in annotations) data.Annotations.Add(s); items.Add(data); } } } #endregion #region Private Methods private static bool IsInternalVariable(string name) { string[] vars = { "__winoe_ActivityLocks_", "__winoe_StaticActivityLocks_", "__winoe_MethodLocks_" }; foreach (string s in vars) { if (0 == string.Compare(s, name, StringComparison.Ordinal)) return true; } return false; } private static bool NameIsDefined(string name, object o, out string realName) { realName = null; Type t = o.GetType(); // // Get the member with the requested name // Do case specific first MemberInfo[] members = t.GetMember(name, BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.GetProperty | BindingFlags.GetField | BindingFlags.Instance | BindingFlags.Static); // // Not found if ((null == members) || (0 == members.Length)) { // // Do case insensitive members = t.GetMember(name, BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.GetProperty | BindingFlags.GetField | BindingFlags.Instance | BindingFlags.Static | BindingFlags.IgnoreCase); // // Not found if ((null == members) || (0 == members.Length)) { return false; } } if ((null == members) || (0 == members.Length) || (null == members[0].Name) || (0 == members[0].Name.Length)) return false; realName = members[0].Name; return true; } private static bool TryParseIndex(string fullName, out string name, out int index) { name = null; index = -1; int endPos = -1, startPos = -1; for (int i = fullName.Length - 1; i > 0; i--) { if ((']' == fullName[i]) && (-1 == endPos)) { endPos = i; } else if (('[' == fullName[i]) && (-1 == startPos)) { startPos = i; break; } } if ((-1 == endPos) || (-1 == startPos)) return false; string idx = fullName.Substring(startPos + 1, endPos - 1 - startPos); name = fullName.Substring(0, startPos); return int.TryParse(idx, out index); } #endregion } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. 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