public ProxyEvaluatorFactory(Configuration.Config configuration)
{
this.Configuration = configuration;
IRuleEvaluatorX <TModel> trueEvaluator = new AlwaysTrueEvaluator <TModel>();
this.evaluators.Add(ConventionHelper.TrueEvaluator(this.Configuration.Convention), trueEvaluator);
}
public IRuleEvaluatorX <TModel> GetRuleEvaluator <TModel>(Evaluator definition)
{
if (definition.Id == ConventionHelper.TrueEvaluator(this.configuration.Convention))
{
return(new AlwaysTrueEvaluator <TModel>());
}
else
{
//in cases where the rule has context, then there will be a test case for
//each individual context. in that case, pass all to the preset rule.
List <Rule> toTest = this.TestCase.Rules.Where(r => r.Id == definition.Id).ToList();
return(new PreSetRuleEvaluator <TModel>(toTest));
}
}
void IFluentExpressionBuilder <T> .ExpIsFalse(Action <IFluentExpressionBuilder <T> > If)
{
string equationId = string.Empty;
//we are in a sub equation
if (this.epxressionStack.Count > 0)
{
string lastEquationId = this.epxressionStack.Peek().Id;
string suffix = (this.epxressionStack.Count % 2 == 0) ? "2" : "1";
equationId = lastEquationId + this.config.Convention.Delimeter + suffix;
}
else //we are at the root
{
string lastActivityId = this.activityStack.Peek().Id;
equationId = ConventionHelper.ChangePrefix(NamePrefixOptions.Activity, NamePrefixOptions.Equation, lastActivityId, this.config.Convention);
}
LogicDefine.Equation toAdd = new LogicDefine.Equation()
{
Condition = Logic.Operand.And,
Id = equationId
};
this.epxressionStack.Push(toAdd);
this.workflowManager.AddEquation(toAdd);
string firstId, secondId = null;
If(this);
LogicDefine.Rule firstRule = this.epxressionStack.Pop().ShortHand;
firstRule.TrueCondition = !firstRule.TrueCondition;
firstId = firstRule.ShortHand;
secondId = ConventionHelper.TrueEvaluator(this.config.Convention);
toAdd.First = firstId;
toAdd.Second = secondId;
}
//this needs to
// * ensure reaction rule is an equation
// * ensure that any evaluators exist in the evaluators list
private string LoadLogic(WorkDefine.Workflow workFlow, string equationId)
{
StepTraceNode <LintTrace> root = this.tracer.Root;
//load conventions
LogicDefine.Evaluator trueDef = workFlow.Evaluators.FirstOrDefault(z => z.Id == ConventionHelper.TrueEvaluator(this.config.Convention));
if (null == trueDef)
{
trueDef = new LogicDefine.Evaluator()
{
Id = ConventionHelper.TrueEvaluator(this.config.Convention), Description = "Always True"
};
workFlow.Evaluators.Add(trueDef);
}
LogicDefine.Equation trueEqDef = workFlow.Equations.FirstOrDefault(z => z.Id == ConventionHelper.TrueEquation(this.config.Convention));
if (null == trueEqDef)
{
trueEqDef = new LogicDefine.Equation()
{
Condition = Logic.Operand.Or, First = trueDef.Id, Second = trueDef.Id, Id = ConventionHelper.TrueEquation(this.config.Convention)
};
workFlow.Equations.Add(trueEqDef);
}
//Lint.... make sure we have everything we need first.
Action <LogicDefine.Rule, StepTraceNode <LintTrace>, bool> LoadRule = null;
LoadRule = (rule, parentStep, isRoot) =>
{
StepTraceNode <LintTrace> step = this.tracer.TraceNext(parentStep, new LintTrace(LintStatusOptions.Inspecting, "Inspecting Rule", rule.Id));
//if id is an equation, we are creating an expression
LogicDefine.Equation eq = workFlow.Equations.FirstOrDefault(g => g.Id.Equals(rule.Id));
if (null != eq)
{
if (null != eq.First)
{
LoadRule(eq.First, step, false);
}
else
{
eq.First = new LogicDefine.Rule()
{
Id = ConventionHelper.TrueEvaluator(this.config.Convention), Context = string.Empty, TrueCondition = true
};
}
if (null != eq.Second)
{
LoadRule(eq.Second.Id, step, false);
}
else
{
eq.Second = new LogicDefine.Rule()
{
Id = ConventionHelper.TrueEvaluator(this.config.Convention), Context = string.Empty, TrueCondition = true
};
}
if (!rule.TrueCondition)
{
//create a negation equation.
string negationId = ConventionHelper.NegateEquationName(rule.Id, this.config.Convention);
LogicDefine.Rule negated = (LogicDefine.Rule)rule.Clone();
//negated.TrueCondition = false;
if (workFlow.Equations.Count(g => g.Id == negationId) == 0)
{
this.tracer.TraceNext(parentStep, new LintTrace(LintStatusOptions.InferringEquation, string.Format("Inferring negation equation from {0}", rule.Id), negationId));
LogicDefine.Equation toAdd = new LogicDefine.Equation()
{
First = negated,
Id = negationId,
Condition = Logic.Operand.And,
Second = ConventionHelper.TrueEvaluator(this.config.Convention)
};
workFlow.Equations.Add(toAdd);
rule.TrueCondition = true;
rule.Id = negationId;
}
}
}
else
{
//if reaction ruleid is not an equation, create an equation and update reaction
LogicDefine.Evaluator ev = workFlow.Evaluators.FirstOrDefault(g => g.Id.Equals(rule.Id));
if (null == ev)
{
this.tracer.TraceNext(parentStep, new LintTrace(LintStatusOptions.LazyDefinition, "No definition found for evaluator", rule.Id));
ev = new LogicDefine.Evaluator()
{
Id = rule.Id,
Description = string.Empty
};
workFlow.Evaluators.Add(ev);
}
//if this is the rule referenced by the reaction, then create an equation also,
//and update the equation. This isn't necessary, but consistent.
if (isRoot)
{
LogicDefine.Rule cloned = (LogicDefine.Rule)rule.Clone();
string newId = string.Empty;
Logic.Operand condition = Logic.Operand.And;
if (rule.Id == ConventionHelper.TrueEquation(this.config.Convention))
{
newId = ConventionHelper.TrueEquation(this.config.Convention);
condition = Logic.Operand.Or;
}
else
{
newId = ConventionHelper.ChangePrefix(NamePrefixOptions.Evaluator, NamePrefixOptions.Equation, rule.Id, this.config.Convention);
}
if (!rule.TrueCondition)
{
newId = ConventionHelper.NegateEquationName(newId, this.config.Convention);
}
if (workFlow.Equations.Count(g => g.Id == newId) == 0)
{
this.tracer.TraceNext(parentStep, new LintTrace(LintStatusOptions.InferringEquation, string.Format("Inferring equation from {0}", rule.Id), newId));
workFlow.Equations.Add(new LogicDefine.Equation()
{
Condition = condition,
First = cloned,
Second = ConventionHelper.TrueEvaluator(this.config.Convention),
Id = newId
});
}
rule.Id = newId;
}
}
};
LogicDefine.Rule eqRule = equationId;
LoadRule(eqRule, root, true);
return(eqRule.Id);
}
public List <LogicTest> LogicLint()
{
int id = 1;
Func <int> newId = () =>
{
return(id += 1);
};
List <bool> tf = new List <bool>()
{
true, false
};
Func <Equation, List <Rule> > getAllRulesForEquation = null;
getAllRulesForEquation = (eq) =>
{
List <Rule> rules = new List <Rule>();
//left hand side of equation
if (ConventionHelper.MatchesConvention(NamePrefixOptions.Equation, eq.First.Id, this.configuration.Convention))
{
Equation traverse = this.WorkflowManager.GetEquation(eq.First.Id);
List <Rule> parsed = getAllRulesForEquation(traverse);
rules = rules.Union(parsed, new RuleEqualityComparer()).ToList();
}
else
{
if (!rules.Contains(eq.First, new RuleEqualityComparer()))
{
rules.Add((Rule)eq.First.Clone());
}
}
if (ConventionHelper.MatchesConvention(NamePrefixOptions.Equation, eq.Second.Id, this.configuration.Convention))
{
Equation traverse = this.WorkflowManager.GetEquation(eq.Second.Id);
List <Rule> parsed = getAllRulesForEquation(traverse);
rules = rules.Union(parsed, new RuleEqualityComparer()).ToList();
}
else
{
if (!rules.Contains(eq.Second, new RuleEqualityComparer()))
{
rules.Add((Rule)eq.Second.Clone());
}
}
string trueId = ConventionHelper.TrueEvaluator(this.configuration.Convention);
return((from r in rules where r.Id != trueId select r).ToList());
};
Func <Stack <List <Case> >, List <Case> > mergeCases = null;
mergeCases = (llc) =>
{
List <Case> merged = llc.Pop();
if (llc.Count > 0)
{
List <Case> toMerge = mergeCases(llc);
List <Case> newMerge = new List <Case>();
merged.ForEach(m =>
{
toMerge.ForEach(g =>
{
List <Rule> newCaseRules = new List <Rule>(from r in m.Rules select(Rule) r.Clone());
newCaseRules.AddRange(from r in g.Rules select(Rule) r.Clone());
Case newCase = new Case(newCaseRules);
newMerge.Add(newCase);
});
});
merged = newMerge;
}
return(merged);
};
if (this.logicTests == default)
{
this.logicTests = new List <LogicTest>();
//get the root
foreach (string rootEquationId in this.roots)
{
Stack <List <Case> > preMerge = new Stack <List <Case> >();
Equation root = this.WorkflowManager.GetEquation(rootEquationId);
List <Rule> evalRules = getAllRulesForEquation(root);
foreach (Rule evalRule in evalRules)
{
List <Case> evalRuleCases = new List <Case>();
if (evalRule.Context == null)
{
evalRuleCases.AddRange(from c in tf
select new Case(new List <Rule>()
{
new Rule()
{
Context = evalRule.Context,
Id = evalRule.Id,
TrueCondition = c
}
}));
}
else
{
Stack <List <Case> > contextCases = new Stack <List <Case> >();
evalRule.Context.Keys.ForEach(k =>
{
List <Case> cases = new List <Case>();
cases.AddRange(from c in tf
select new Case(new List <Rule>()
{
new Rule()
{
Context = new Context(new List <string>()
{
k
}, evalRule.Context.Name),
Id = evalRule.Id,
TrueCondition = c
}
}));
contextCases.Push(cases);
evalRuleCases = mergeCases(contextCases);
contextCases.Push(evalRuleCases);
});
var contextDef = this.WorkflowManager.GetContextDefinition(evalRule.Context.Name);
if (contextDef.Validate == ValidateOptions.OneOf)
{
evalRuleCases.RemoveAll(c => c.Rules.Count(r => r.TrueCondition) != 1 && c.Rules.Any(r => r.TrueCondition));
}
if (contextDef.Exclusive)
{
evalRuleCases.RemoveAll(c => c.Rules.Count(r => !r.TrueCondition) == c.Rules.Count() && c.Rules.Count == contextDef.Items.Count);
}
}
preMerge.Push(evalRuleCases);
}
List <Case> finalCases = mergeCases(preMerge);
LogicTest eqTest = new LogicTest(rootEquationId, true)
{
TestCases = finalCases
};
this.logicTests.Add(eqTest);
}
}
return(this.logicTests);
}
void IFluentExpressionBuilder <T> .Rule(Action <IRuleBuilder <T> > action)
{
RuleBuilder <T> builderRef = new RuleBuilder <T>(this);
action.Invoke(builderRef);
LogicDefine.Rule evaluatorId = builderRef.rule;
evaluatorId.Id = ConventionHelper.EnsureConvention(NamePrefixOptions.Evaluator, evaluatorId.Id, this.config.Convention);
string actionName = builderRef.evaluatorx.GetType().Name;
string description = ConventionHelper.ParseMethodName(actionName, this.config.Convention.ParseMethodNamesAs).Literal;
var descAttr = builderRef.evaluatorx.GetType().GetCustomAttributes(typeof(ArticulateOptionsAttribute), true)
.OfType <ArticulateOptionsAttribute>()
.FirstOrDefault();
if (descAttr != null)
{
description = descAttr.Description;
}
this.workflowManager.AddEvaluator(new LogicDefine.Evaluator()
{
Id = evaluatorId.Id, Description = description
});
bool isRoot = this.epxressionStack.Count == 0;
if (!this.evaluators.ContainsKey(evaluatorId.Id))
{
this.evaluators.Add(evaluatorId.Id, builderRef.evaluatorx);
} //if attmpeting to add another implementation with the same id, throw an exception
//we can't handle this
else if (this.evaluators[evaluatorId.Id].GetType() != builderRef.evaluatorx.GetType())
{
throw new BuilderException(evaluatorId.Id);
}
if (isRoot)
{
string equationId = ConventionHelper.ChangePrefix(NamePrefixOptions.Evaluator, NamePrefixOptions.Equation, evaluatorId.Id, this.config.Convention);
bool trueCond = true;;
if (!evaluatorId.TrueCondition)
{
equationId = ConventionHelper.NegateEquationName(equationId, this.config.Convention);
trueCond = false;
}
LogicDefine.Equation toAdd = new LogicDefine.Equation()
{
Condition = Logic.Operand.And,
First = evaluatorId,
Id = equationId,
Second = ConventionHelper.TrueEvaluator(this.config.Convention),
//TrueCondition = trueCond
};
this.epxressionStack.Push(toAdd);
this.workflowManager.AddEquation(toAdd);
}
else
{
this.epxressionStack.Push(evaluatorId);
}
//if root... then create euqations
//otherwise, just use as evaluator
}
