Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WF / Activities / Rules / RuleAction.cs / 1305376 / RuleAction.cs
#pragma warning disable 1634, 1691 using System; using System.Text; using System.CodeDom; using System.Reflection; using System.Globalization; using System.Collections.Generic; using System.Workflow.ComponentModel; using System.Workflow.ComponentModel.Compiler; using System.Workflow.ComponentModel.Serialization; using System.Workflow.Activities.Common; namespace System.Workflow.Activities.Rules { [Serializable] public abstract class RuleAction { public abstract bool Validate(RuleValidation validator); public abstract void Execute(RuleExecution context); public abstract ICollectionGetSideEffects(RuleValidation validation); public abstract RuleAction Clone(); } [Serializable] public class RuleHaltAction : RuleAction { public override bool Validate(RuleValidation validator) { // Trivial... nothing to validate. return true; } public override void Execute(RuleExecution context) { if (context == null) throw new ArgumentNullException("context"); context.Halted = true; } public override ICollection GetSideEffects(RuleValidation validation) { return null; } public override RuleAction Clone() { return (RuleAction)this.MemberwiseClone(); } public override string ToString() { return "Halt"; } public override bool Equals(object obj) { return (obj is RuleHaltAction); } public override int GetHashCode() { return base.GetHashCode(); } } [Serializable] public class RuleUpdateAction : RuleAction { private string path; public RuleUpdateAction(string path) { this.path = path; } public RuleUpdateAction() { } public string Path { get { return path; } set { path = value; } } public override bool Validate(RuleValidation validator) { if (validator == null) throw new ArgumentNullException("validator"); bool success = true; if (path == null) { ValidationError error = new ValidationError(Messages.NullUpdate, ErrorNumbers.Error_ParameterNotSet); error.UserData[RuleUserDataKeys.ErrorObject] = this; validator.AddError(error); success = false; } // now make sure that the path is valid string[] parts = path.Split('/'); if (parts[0] == "this") { Type currentType = validator.ThisType; for (int i = 1; i < parts.Length; ++i) { if (parts[i] == "*") { if (i < parts.Length - 1) { // The "*" occurred in the middle of the path, which is a no-no. ValidationError error = new ValidationError(Messages.InvalidWildCardInPathQualifier, ErrorNumbers.Error_InvalidWildCardInPathQualifier); error.UserData[RuleUserDataKeys.ErrorObject] = this; validator.AddError(error); success = false; break; } else { // It occurred at the end, which is okay. break; } } else if (string.IsNullOrEmpty(parts[i]) && i == parts.Length - 1) { // It's okay to end with a "/". break; } while (currentType.IsArray) currentType = currentType.GetElementType(); BindingFlags bindingFlags = BindingFlags.Public | BindingFlags.Instance | BindingFlags.Static | BindingFlags.FlattenHierarchy; if (validator.AllowInternalMembers(currentType)) bindingFlags |= BindingFlags.NonPublic; FieldInfo field = currentType.GetField(parts[i], bindingFlags); if (field != null) { currentType = field.FieldType; } else { PropertyInfo property = currentType.GetProperty(parts[i], bindingFlags); if (property != null) { currentType = property.PropertyType; } else { string message = string.Format(CultureInfo.CurrentCulture, Messages.UpdateUnknownFieldOrProperty, parts[i]); ValidationError error = new ValidationError(message, ErrorNumbers.Error_InvalidUpdate); error.UserData[RuleUserDataKeys.ErrorObject] = this; validator.AddError(error); success = false; break; } } } } else { ValidationError error = new ValidationError(Messages.UpdateNotThis, ErrorNumbers.Error_InvalidUpdate); error.UserData[RuleUserDataKeys.ErrorObject] = this; validator.AddError(error); success = false; } return success; } public override void Execute(RuleExecution context) { // This action has no execution behaviour. } public override ICollection GetSideEffects(RuleValidation validation) { return new string[] { this.path }; } public override RuleAction Clone() { return (RuleAction)this.MemberwiseClone(); } public override string ToString() { return "Update(\"" + this.path + "\")"; } public override bool Equals(object obj) { #pragma warning disable 56506 RuleUpdateAction other = obj as RuleUpdateAction; return ((other != null) && (string.Equals(this.Path, other.Path, StringComparison.Ordinal))); #pragma warning restore 56506 } public override int GetHashCode() { return base.GetHashCode(); } } [Serializable] public class RuleStatementAction : RuleAction { private CodeStatement codeDomStatement; public RuleStatementAction(CodeStatement codeDomStatement) { this.codeDomStatement = codeDomStatement; } public RuleStatementAction(CodeExpression codeDomExpression) { this.codeDomStatement = new CodeExpressionStatement(codeDomExpression); } public RuleStatementAction() { } public CodeStatement CodeDomStatement { get { return codeDomStatement; } set { codeDomStatement = value; } } public override bool Validate(RuleValidation validator) { if (validator == null) throw new ArgumentNullException("validator"); if (codeDomStatement == null) { ValidationError error = new ValidationError(Messages.NullStatement, ErrorNumbers.Error_ParameterNotSet); error.UserData[RuleUserDataKeys.ErrorObject] = this; validator.AddError(error); return false; } else { return CodeDomStatementWalker.Validate(validator, codeDomStatement); } } public override void Execute(RuleExecution context) { if (codeDomStatement == null) throw new InvalidOperationException(Messages.NullStatement); CodeDomStatementWalker.Execute(context, codeDomStatement); } public override ICollection GetSideEffects(RuleValidation validation) { RuleAnalysis analysis = new RuleAnalysis(validation, true); if (codeDomStatement != null) CodeDomStatementWalker.AnalyzeUsage(analysis, codeDomStatement); return analysis.GetSymbols(); } public override RuleAction Clone() { RuleStatementAction newAction = (RuleStatementAction)this.MemberwiseClone(); newAction.codeDomStatement = CodeDomStatementWalker.Clone(codeDomStatement); return newAction; } public override string ToString() { if (codeDomStatement == null) return ""; StringBuilder decompilation = new StringBuilder(); CodeDomStatementWalker.Decompile(decompilation, codeDomStatement); return decompilation.ToString(); } public override bool Equals(object obj) { #pragma warning disable 56506 RuleStatementAction other = obj as RuleStatementAction; return ((other != null) && (CodeDomStatementWalker.Match(CodeDomStatement, other.CodeDomStatement))); #pragma warning restore 56506 } public override int GetHashCode() { return base.GetHashCode(); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. 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