/// <summary>
/// Defines a condition that applies to several rules
/// </summary>
/// <param name="predicate">The condition that should apply to multiple rules</param>
/// <param name="action">Action that encapsulates the rules.</param>
/// <returns></returns>
public IConditionBuilder When(Func <T, bool> predicate, Action action)
{
var propertyRules = new List <IValidationRule>();
using (_rules.OnItemAdded(propertyRules.Add)) {
action();
}
// Generate unique ID for this shared condition.
var id = "_FV_Condition_" + Guid.NewGuid();
bool Condition(ValidationContext context)
{
string cacheId = null;
if (context.InstanceToValidate != null)
{
cacheId = id + context.InstanceToValidate.GetHashCode();
if (context.RootContextData.TryGetValue(cacheId, out var value))
{
if (value is bool result)
{
return(result);
}
}
}
var executionResult = predicate((T)context.InstanceToValidate);
if (context.InstanceToValidate != null)
{
context.RootContextData[cacheId] = executionResult;
}
return(executionResult);
}
// Must apply the predicate after the rule has been fully created to ensure any rules-specific conditions have already been applied.
foreach (var rule in propertyRules)
{
//TODO for FV 9 remove explicit reference to CollectionPropertyRule.
if (rule is PropertyRule p)
{
p.ApplySharedCondition(Condition);
}
else
{
throw new NotSupportedException("Cannot call the root-level When/Unless methods on rules that don't inherit from PropertyRule");
}
}
return(new ConditionOtherwiseBuilder(_rules, Condition));
}
/// <summary>
/// Defines an asynchronous condition that applies to several rules
/// </summary>
/// <param name="predicate">The asynchronous condition that should apply to multiple rules</param>
/// <param name="action">Action that encapsulates the rules.</param>
/// <returns></returns>
public IConditionBuilder WhenAsync(Func <T, CancellationToken, Task <bool> > predicate, Action action)
{
var propertyRules = new List <IValidationRule>();
using (_rules.OnItemAdded(propertyRules.Add)) {
action();
}
// Generate unique ID for this shared condition.
var id = "_FV_AsyncCondition_" + Guid.NewGuid();
async Task <bool> Condition(ValidationContext context, CancellationToken ct)
{
string cacheId = null;
if (context.InstanceToValidate != null)
{
cacheId = id + context.InstanceToValidate.GetHashCode();
if (context.RootContextData.TryGetValue(cacheId, out var value))
{
if (value is bool result)
{
return(result);
}
}
}
var executionResult = await predicate((T)context.InstanceToValidate, ct);
if (context.InstanceToValidate != null)
{
context.RootContextData[cacheId] = executionResult;
}
return(executionResult);
}
foreach (var rule in propertyRules)
{
//TODO for FV 9 remove explicit reference to CollectionPropertyRule.
if (rule is PropertyRule p)
{
p.ApplySharedAsyncCondition(Condition);
}
else
{
throw new NotSupportedException("Cannot call the root-level When/Unless methods on rules that don't inherit from PropertyRule");
}
}
return(new AsyncConditionOtherwiseBuilder(_rules, Condition));
}
public virtual void Otherwise(Action action)
{
var propertyRules = new List <IValidationRule>();
Action <IValidationRule> onRuleAdded = propertyRules.Add;
using (_rules.OnItemAdded(onRuleAdded)) {
action();
}
foreach (var rule in propertyRules)
{
rule.ApplySharedAsyncCondition(async(ctx, ct) => !await _condition(ctx, ct));
}
}
/// <summary>
/// Defines a condition that applies to several rules
/// </summary>
/// <param name="predicate">The condition that should apply to multiple rules</param>
/// <param name="action">Action that encapsulates the rules.</param>
/// <returns></returns>
public IConditionBuilder When(Func <T, ValidationContext <T>, bool> predicate, Action action)
{
var propertyRules = new List <IValidationRule>();
using (_rules.OnItemAdded(propertyRules.Add)) {
action();
}
// Generate unique ID for this shared condition.
var id = "_FV_Condition_" + Guid.NewGuid();
bool Condition(ValidationContext context)
{
string cacheId = null;
if (context.InstanceToValidate != null)
{
cacheId = id + context.InstanceToValidate.GetHashCode();
if (context.RootContextData.TryGetValue(cacheId, out var value))
{
if (value is bool result)
{
return(result);
}
}
}
var executionResult = predicate((T)context.InstanceToValidate, ValidationContext <T> .GetFromNonGenericContext(context));
if (context.InstanceToValidate != null)
{
context.RootContextData[cacheId] = executionResult;
}
return(executionResult);
}
// Must apply the predicate after the rule has been fully created to ensure any rules-specific conditions have already been applied.
foreach (var rule in propertyRules)
{
rule.ApplySharedCondition(Condition);
}
return(new ConditionOtherwiseBuilder(_rules, Condition));
}
/// <summary>
/// Defines an asynchronous condition that applies to several rules
/// </summary>
/// <param name="predicate">The asynchronous condition that should apply to multiple rules</param>
/// <param name="action">Action that encapsulates the rules.</param>
/// <returns></returns>
public IConditionBuilder WhenAsync(Func <T, ValidationContext <T>, CancellationToken, Task <bool> > predicate, Action action)
{
var propertyRules = new List <IValidationRule>();
using (_rules.OnItemAdded(propertyRules.Add)) {
action();
}
// Generate unique ID for this shared condition.
var id = "_FV_AsyncCondition_" + Guid.NewGuid();
async Task <bool> Condition(ValidationContext context, CancellationToken ct)
{
string cacheId = null;
if (context.InstanceToValidate != null)
{
cacheId = id + context.InstanceToValidate.GetHashCode();
if (context.RootContextData.TryGetValue(cacheId, out var value))
{
if (value is bool result)
{
return(result);
}
}
}
var executionResult = await predicate((T)context.InstanceToValidate, ValidationContext <T> .GetFromNonGenericContext(context), ct);
if (context.InstanceToValidate != null)
{
context.RootContextData[cacheId] = executionResult;
}
return(executionResult);
}
foreach (var rule in propertyRules)
{
rule.ApplySharedAsyncCondition(Condition);
}
return(new AsyncConditionOtherwiseBuilder(_rules, Condition));
}
public virtual void Otherwise(Action action)
{
var propertyRules = new List <IValidationRule>();
Action <IValidationRule> onRuleAdded = propertyRules.Add;
using (_rules.OnItemAdded(onRuleAdded)) {
action();
}
foreach (var rule in propertyRules)
{
if (rule is PropertyRule p)
{
p.ApplySharedAsyncCondition(async(ctx, ct) => !await _condition(ctx, ct));
}
else
{
throw new NotSupportedException("Cannot call the root-level When/Unless methods on rules that don't inherit from PropertyRule");
}
}
}