/// <inheritdoc />
public bool TryGetValue <T>(IPublishedElement content, string alias, string?culture, string?segment, Fallback fallback, T?defaultValue, out T?value)
{
var propertyType = content.ContentType.GetPropertyType(alias);
if (propertyType == null)
{
value = default;
return(false);
}
_variationContextAccessor.ContextualizeVariation(propertyType.Variations, ref culture, ref segment);
foreach (var f in fallback)
{
switch (f)
{
case Fallback.None:
continue;
case Fallback.DefaultValue:
value = defaultValue;
return(true);
case Fallback.Language:
if (TryGetValueWithLanguageFallback(content, alias, culture, segment, out value))
{
return(true);
}
break;
default:
throw NotSupportedFallbackMethod(f, "element");
}
}
value = default;
return(false);
}
/// <inheritdoc />
public bool TryGetValue(IPublishedElement content, string alias, string?culture, string?segment, Fallback fallback, object?defaultValue, out object?value)
{
return(TryGetValue <object>(content, alias, culture, segment, fallback, defaultValue, out value));
}
/// <inheritdoc />
public bool TryGetValue(IPublishedProperty property, string?culture, string?segment, Fallback fallback, object?defaultValue, out object?value)
{
return(TryGetValue <object>(property, culture, segment, fallback, defaultValue, out value));
}
/// <inheritdoc />
public virtual bool TryGetValue <T>(IPublishedContent content, string alias, string?culture, string?segment, Fallback fallback, T?defaultValue, out T?value, out IPublishedProperty?noValueProperty)
{
noValueProperty = default;
var propertyType = content.ContentType.GetPropertyType(alias);
if (propertyType != null)
{
_variationContextAccessor.ContextualizeVariation(propertyType.Variations, content.Id, ref culture, ref segment);
noValueProperty = content.GetProperty(alias);
}
// note: we don't support "recurse & language" which would walk up the tree,
// looking at languages at each level - should someone need it... they'll have
// to implement it.
foreach (var f in fallback)
{
switch (f)
{
case Fallback.None:
continue;
case Fallback.DefaultValue:
value = defaultValue;
return(true);
case Fallback.Language:
if (propertyType == null)
{
continue;
}
if (TryGetValueWithLanguageFallback(content, alias, culture, segment, out value))
{
return(true);
}
break;
case Fallback.Ancestors:
if (TryGetValueWithAncestorsFallback(content, alias, culture, segment, out value, ref noValueProperty))
{
return(true);
}
break;
default:
throw NotSupportedFallbackMethod(f, "content");
}
}
value = default;
return(false);
}
/// <inheritdoc />
public bool TryGetValue(IPublishedContent content, string alias, string?culture, string?segment, Fallback fallback, object?defaultValue, out object?value, out IPublishedProperty?noValueProperty)
{
return(TryGetValue <object>(content, alias, culture, segment, fallback, defaultValue, out value, out noValueProperty));
}
/// <inheritdoc />
public bool TryGetValue <T>(IPublishedProperty property, string culture, string segment, Fallback fallback, T defaultValue, out T value)
{
_variationContextAccessor.ContextualizeVariation(property.PropertyType.Variations, ref culture, ref segment);
foreach (var f in fallback)
{
switch (f)
{
case Fallback.None:
continue;
case Fallback.DefaultValue:
value = defaultValue;
return(true);
case Fallback.Language:
if (TryGetValueWithLanguageFallback(property, culture, segment, out value))
{
return(true);
}
break;
default:
throw NotSupportedFallbackMethod(f, "property");
}
}
value = default;
return(false);
}
