Rule.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WF / Activities / Rules / Rule.cs / 1305376 / Rule.cs
                        

                        
                            // ---------------------------------------------------------------------------- 
// Copyright (C) 2005 Microsoft Corporation All Rights Reserved
// ---------------------------------------------------------------------------

using System; 
using System.CodeDom;
using System.Collections; 
using System.Collections.Generic; 
using System.Globalization;
using System.Workflow.ComponentModel; 
using System.Workflow.ComponentModel.Compiler;
using System.ComponentModel;
using System.Workflow.Activities.Common;
 
namespace System.Workflow.Activities.Rules
{ 
    public enum RuleReevaluationBehavior 
    {
        Never, 
        Always
    };

    [Serializable] 
    public class Rule
    { 
        internal string name; 
        internal string description;
        internal int priority; 
        internal RuleReevaluationBehavior behavior = RuleReevaluationBehavior.Always;
        internal bool active = true;
        internal RuleCondition condition;
        internal IList thenActions; 
        internal IList elseActions;
        private bool runtimeInitialized; 
 
        public Rule()
        { 
        }

        public Rule(string name)
        { 
            this.name = name;
        } 
 
        public Rule(string name, RuleCondition condition, IList thenActions)
        { 
            this.name = name;
            this.condition = condition;
            this.thenActions = thenActions;
        } 

        public Rule(string name, RuleCondition condition, IList thenActions, IList elseActions) 
        { 
            this.name = name;
            this.condition = condition; 
            this.thenActions = thenActions;
            this.elseActions = elseActions;
        }
 
        public string Name
        { 
            get { return name; } 
            set
            { 
                if (runtimeInitialized)
                    throw new InvalidOperationException(SR.GetString(SR.Error_CanNotChangeAtRuntime));
                name = value;
            } 
        }
 
        public string Description 
        {
            get { return description; } 
            set
            {
                if (runtimeInitialized)
                    throw new InvalidOperationException(SR.GetString(SR.Error_CanNotChangeAtRuntime)); 
                description = value;
            } 
        } 

        public int Priority 
        {
            get { return priority; }
            set
            { 
                if (runtimeInitialized)
                    throw new InvalidOperationException(SR.GetString(SR.Error_CanNotChangeAtRuntime)); 
                priority = value; 
            }
        } 

        public RuleReevaluationBehavior ReevaluationBehavior
        {
            get { return behavior; } 
            set
            { 
                if (runtimeInitialized) 
                    throw new InvalidOperationException(SR.GetString(SR.Error_CanNotChangeAtRuntime));
                behavior = value; 
            }
        }

        public bool Active 
        {
            get { return active; } 
            set 
            {
                if (runtimeInitialized) 
                    throw new InvalidOperationException(SR.GetString(SR.Error_CanNotChangeAtRuntime));
                active = value;
            }
        } 

        public RuleCondition Condition 
        { 
            get { return condition; }
            set 
            {
                if (runtimeInitialized)
                    throw new InvalidOperationException(SR.GetString(SR.Error_CanNotChangeAtRuntime));
                condition = value; 
            }
        } 
 
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
        public IList ThenActions 
        {
            get { if (thenActions == null) thenActions = new List(); return thenActions; }
        }
 
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
        public IList ElseActions 
        { 
            get { if (elseActions == null) elseActions = new List(); return elseActions; }
        } 

        internal void Validate(RuleValidation validation)
        {
            int oldErrorCount = validation.Errors.Count; 

            if (string.IsNullOrEmpty(name)) 
                validation.Errors.Add(new ValidationError(Messages.RuleNameMissing, ErrorNumbers.Error_InvalidConditionName)); 

            // check the condition 
            if (condition == null)
                validation.Errors.Add(new ValidationError(Messages.MissingRuleCondition, ErrorNumbers.Error_MissingRuleCondition));
            else
                condition.Validate(validation); 

            // check the optional then actions 
            if (thenActions != null) 
                ValidateRuleActions(thenActions, validation);
 
            // check the optional else actions
            if (elseActions != null)
                ValidateRuleActions(elseActions, validation);
 
            // fix up the error messages by prepending the rule name
            ValidationErrorCollection errors = validation.Errors; 
            if (errors.Count > oldErrorCount) 
            {
                string prefix = string.Format(CultureInfo.CurrentCulture, Messages.RuleValidationError, name); 

                int newErrorCount = errors.Count;
                for (int i = oldErrorCount; i < newErrorCount; ++i)
                { 
                    ValidationError oldError = errors[i];
 
                    ValidationError newError = new ValidationError(prefix + oldError.ErrorText, oldError.ErrorNumber, oldError.IsWarning); 
                    foreach (DictionaryEntry de in oldError.UserData)
                        newError.UserData[de.Key] = de.Value; 

                    errors[i] = newError;
                }
            } 
        }
 
        private static void ValidateRuleActions(ICollection ruleActions, RuleValidation validator) 
        {
            bool seenHalt = false; 
            bool statementsAfterHalt = false;
            foreach (RuleAction action in ruleActions)
            {
                action.Validate(validator); 
                if (seenHalt)
                    statementsAfterHalt = true; 
                if (action is RuleHaltAction) 
                    seenHalt = true;
            } 

            if (statementsAfterHalt)
            {
                // one or more actions after Halt 
                validator.Errors.Add(new ValidationError(Messages.UnreachableCodeHalt, ErrorNumbers.Warning_UnreachableCode, true));
            } 
        } 

        public Rule Clone() 
        {
            Rule newRule = (Rule)this.MemberwiseClone();
            newRule.runtimeInitialized = false;
 
            if (this.condition != null)
                newRule.condition = this.condition.Clone(); 
 
            if (this.thenActions != null)
            { 
                newRule.thenActions = new List();
                foreach (RuleAction thenAction in this.thenActions)
                    newRule.thenActions.Add(thenAction.Clone());
            } 

            if (this.elseActions != null) 
            { 
                newRule.elseActions = new List();
                foreach (RuleAction elseAction in this.elseActions) 
                    newRule.elseActions.Add(elseAction.Clone());
            }

            return newRule; 
        }
 
        public override bool Equals(object obj) 
        {
            Rule other = obj as Rule; 
            if (other == null)
                return false;
            if ((this.Name != other.Name)
                || (this.Description != other.Description) 
                || (this.Active != other.Active)
                || (this.ReevaluationBehavior != other.ReevaluationBehavior) 
                || (this.Priority != other.Priority)) 
                return false;
            // look similar, compare condition (can be null) 
            if (this.Condition == null)
            {
                if (other.Condition != null)
                    return false; 
            }
            else 
            { 
                if (!this.Condition.Equals(other.Condition))
                    return false; 
            }
            // compare ThenActions (may be null)
            if (!ActionsEqual(this.thenActions, other.thenActions))
                return false; 
            if (!ActionsEqual(this.elseActions, other.elseActions))
                return false; 
            return true; 
        }
 
        private static bool ActionsEqual(IList myActions, IList otherActions)
        {
            if ((myActions == null) && (otherActions == null))
                return true; 
            if ((myActions == null) || (otherActions == null))
                return false; 
            if (myActions.Count != otherActions.Count) 
                return false;
            for (int i = 0; i < myActions.Count; ++i) 
            {
                if (!myActions[i].Equals(otherActions[i]))
                    return false;
            } 
            return true;
        } 
 
        public override int GetHashCode()
        { 
            return base.GetHashCode();
        }

        internal void OnRuntimeInitialized() 
        {
            runtimeInitialized = true; 
        } 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
// ---------------------------------------------------------------------------- 
// Copyright (C) 2005 Microsoft Corporation All Rights Reserved
// ---------------------------------------------------------------------------

using System; 
using System.CodeDom;
using System.Collections; 
using System.Collections.Generic; 
using System.Globalization;
using System.Workflow.ComponentModel; 
using System.Workflow.ComponentModel.Compiler;
using System.ComponentModel;
using System.Workflow.Activities.Common;
 
namespace System.Workflow.Activities.Rules
{ 
    public enum RuleReevaluationBehavior 
    {
        Never, 
        Always
    };

    [Serializable] 
    public class Rule
    { 
        internal string name; 
        internal string description;
        internal int priority; 
        internal RuleReevaluationBehavior behavior = RuleReevaluationBehavior.Always;
        internal bool active = true;
        internal RuleCondition condition;
        internal IList thenActions; 
        internal IList elseActions;
        private bool runtimeInitialized; 
 
        public Rule()
        { 
        }

        public Rule(string name)
        { 
            this.name = name;
        } 
 
        public Rule(string name, RuleCondition condition, IList thenActions)
        { 
            this.name = name;
            this.condition = condition;
            this.thenActions = thenActions;
        } 

        public Rule(string name, RuleCondition condition, IList thenActions, IList elseActions) 
        { 
            this.name = name;
            this.condition = condition; 
            this.thenActions = thenActions;
            this.elseActions = elseActions;
        }
 
        public string Name
        { 
            get { return name; } 
            set
            { 
                if (runtimeInitialized)
                    throw new InvalidOperationException(SR.GetString(SR.Error_CanNotChangeAtRuntime));
                name = value;
            } 
        }
 
        public string Description 
        {
            get { return description; } 
            set
            {
                if (runtimeInitialized)
                    throw new InvalidOperationException(SR.GetString(SR.Error_CanNotChangeAtRuntime)); 
                description = value;
            } 
        } 

        public int Priority 
        {
            get { return priority; }
            set
            { 
                if (runtimeInitialized)
                    throw new InvalidOperationException(SR.GetString(SR.Error_CanNotChangeAtRuntime)); 
                priority = value; 
            }
        } 

        public RuleReevaluationBehavior ReevaluationBehavior
        {
            get { return behavior; } 
            set
            { 
                if (runtimeInitialized) 
                    throw new InvalidOperationException(SR.GetString(SR.Error_CanNotChangeAtRuntime));
                behavior = value; 
            }
        }

        public bool Active 
        {
            get { return active; } 
            set 
            {
                if (runtimeInitialized) 
                    throw new InvalidOperationException(SR.GetString(SR.Error_CanNotChangeAtRuntime));
                active = value;
            }
        } 

        public RuleCondition Condition 
        { 
            get { return condition; }
            set 
            {
                if (runtimeInitialized)
                    throw new InvalidOperationException(SR.GetString(SR.Error_CanNotChangeAtRuntime));
                condition = value; 
            }
        } 
 
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
        public IList ThenActions 
        {
            get { if (thenActions == null) thenActions = new List(); return thenActions; }
        }
 
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
        public IList ElseActions 
        { 
            get { if (elseActions == null) elseActions = new List(); return elseActions; }
        } 

        internal void Validate(RuleValidation validation)
        {
            int oldErrorCount = validation.Errors.Count; 

            if (string.IsNullOrEmpty(name)) 
                validation.Errors.Add(new ValidationError(Messages.RuleNameMissing, ErrorNumbers.Error_InvalidConditionName)); 

            // check the condition 
            if (condition == null)
                validation.Errors.Add(new ValidationError(Messages.MissingRuleCondition, ErrorNumbers.Error_MissingRuleCondition));
            else
                condition.Validate(validation); 

            // check the optional then actions 
            if (thenActions != null) 
                ValidateRuleActions(thenActions, validation);
 
            // check the optional else actions
            if (elseActions != null)
                ValidateRuleActions(elseActions, validation);
 
            // fix up the error messages by prepending the rule name
            ValidationErrorCollection errors = validation.Errors; 
            if (errors.Count > oldErrorCount) 
            {
                string prefix = string.Format(CultureInfo.CurrentCulture, Messages.RuleValidationError, name); 

                int newErrorCount = errors.Count;
                for (int i = oldErrorCount; i < newErrorCount; ++i)
                { 
                    ValidationError oldError = errors[i];
 
                    ValidationError newError = new ValidationError(prefix + oldError.ErrorText, oldError.ErrorNumber, oldError.IsWarning); 
                    foreach (DictionaryEntry de in oldError.UserData)
                        newError.UserData[de.Key] = de.Value; 

                    errors[i] = newError;
                }
            } 
        }
 
        private static void ValidateRuleActions(ICollection ruleActions, RuleValidation validator) 
        {
            bool seenHalt = false; 
            bool statementsAfterHalt = false;
            foreach (RuleAction action in ruleActions)
            {
                action.Validate(validator); 
                if (seenHalt)
                    statementsAfterHalt = true; 
                if (action is RuleHaltAction) 
                    seenHalt = true;
            } 

            if (statementsAfterHalt)
            {
                // one or more actions after Halt 
                validator.Errors.Add(new ValidationError(Messages.UnreachableCodeHalt, ErrorNumbers.Warning_UnreachableCode, true));
            } 
        } 

        public Rule Clone() 
        {
            Rule newRule = (Rule)this.MemberwiseClone();
            newRule.runtimeInitialized = false;
 
            if (this.condition != null)
                newRule.condition = this.condition.Clone(); 
 
            if (this.thenActions != null)
            { 
                newRule.thenActions = new List();
                foreach (RuleAction thenAction in this.thenActions)
                    newRule.thenActions.Add(thenAction.Clone());
            } 

            if (this.elseActions != null) 
            { 
                newRule.elseActions = new List();
                foreach (RuleAction elseAction in this.elseActions) 
                    newRule.elseActions.Add(elseAction.Clone());
            }

            return newRule; 
        }
 
        public override bool Equals(object obj) 
        {
            Rule other = obj as Rule; 
            if (other == null)
                return false;
            if ((this.Name != other.Name)
                || (this.Description != other.Description) 
                || (this.Active != other.Active)
                || (this.ReevaluationBehavior != other.ReevaluationBehavior) 
                || (this.Priority != other.Priority)) 
                return false;
            // look similar, compare condition (can be null) 
            if (this.Condition == null)
            {
                if (other.Condition != null)
                    return false; 
            }
            else 
            { 
                if (!this.Condition.Equals(other.Condition))
                    return false; 
            }
            // compare ThenActions (may be null)
            if (!ActionsEqual(this.thenActions, other.thenActions))
                return false; 
            if (!ActionsEqual(this.elseActions, other.elseActions))
                return false; 
            return true; 
        }
 
        private static bool ActionsEqual(IList myActions, IList otherActions)
        {
            if ((myActions == null) && (otherActions == null))
                return true; 
            if ((myActions == null) || (otherActions == null))
                return false; 
            if (myActions.Count != otherActions.Count) 
                return false;
            for (int i = 0; i < myActions.Count; ++i) 
            {
                if (!myActions[i].Equals(otherActions[i]))
                    return false;
            } 
            return true;
        } 
 
        public override int GetHashCode()
        { 
            return base.GetHashCode();
        }

        internal void OnRuntimeInitialized() 
        {
            runtimeInitialized = true; 
        } 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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