public object Get(EventBean eventBean)
{
var value = VariantEventPropertyGetterAny.VariantGet(eventBean, _propertyGetterCache,
_assignedPropertyNumber);
if (value == null) return null;
return _caster.Invoke(value);
}
public VariantPropertyDesc ResolveProperty(String propertyName, EventType[] variants)
{
// property numbers should start at zero since the serve as array index
int assignedPropertyNumber = _currentPropertyNumber;
_currentPropertyNumber++;
_propertyGetterCache.AddGetters(assignedPropertyNumber, propertyName);
var getter = new VariantEventPropertyGetterAny(_propertyGetterCache, assignedPropertyNumber);
return(new VariantPropertyDesc(typeof(Object), getter, true));
}
public ICodegenExpression CodegenUnderlyingFragment(ICodegenExpression underlyingExpression,
ICodegenContext context)
{
throw VariantEventPropertyGetterAny.VariantImplementationNotProvided();
}
public bool IsExistsProperty(EventBean eventBean)
{
return VariantEventPropertyGetterAny.VariantExists(eventBean, _propertyGetterCache,
_assignedPropertyNumber);
}
public VariantPropertyDesc ResolveProperty(String propertyName, EventType[] variants)
{
bool existsInAll = true;
Type commonType = null;
bool mustCoerce = false;
for (int i = 0; i < variants.Length; i++)
{
Type type = variants[i].GetPropertyType(propertyName); //.GetBoxedType();
if (type == null)
{
existsInAll = false;
continue;
}
if (commonType == null)
{
commonType = type;
continue;
}
// compare types
if (type == commonType)
{
continue;
}
if (type.GetBoxedType() == commonType.GetBoxedType())
{
commonType = commonType.GetBoxedType();
continue;
}
// coercion
if (type.IsNumeric())
{
if (TypeHelper.CanCoerce(type, commonType))
{
mustCoerce = true;
continue;
}
if (TypeHelper.CanCoerce(commonType, type))
{
mustCoerce = true;
commonType = type;
}
}
else if (commonType == typeof(Object))
{
continue;
}
// common interface or base class
else if (!type.IsBuiltinDataType())
{
var supersForType = new FIFOHashSet <Type>();
TypeHelper.GetBase(type, supersForType);
supersForType.Remove(typeof(Object));
if (supersForType.Contains(commonType))
{
continue; // type, or : common type
}
if (TypeHelper.IsSubclassOrImplementsInterface(commonType, type))
{
commonType = type; // common type : type
continue;
}
// find common interface or type both implement
var supersForCommonType = new FIFOHashSet <Type>();
TypeHelper.GetBase(commonType, supersForCommonType);
supersForCommonType.Remove(typeof(Object));
// Take common classes first, ignoring interfaces
bool found = false;
foreach (Type superClassType in supersForType)
{
if (!superClassType.IsInterface && (supersForCommonType.Contains(superClassType)))
{
break;
}
}
if (found)
{
continue;
}
// Take common interfaces
foreach (var superClassType in supersForType)
{
if (superClassType.IsInterface && supersForCommonType.Contains(superClassType))
{
commonType = superClassType;
found = true;
break;
}
}
}
commonType = typeof(Object);
}
if (!existsInAll)
{
return(null);
}
if (commonType == null)
{
return(null);
}
// property numbers should start at zero since the serve as array index
var assignedPropertyNumber = currentPropertyNumber;
currentPropertyNumber++;
propertyGetterCache.AddGetters(assignedPropertyNumber, propertyName);
EventPropertyGetterSPI getter;
if (mustCoerce)
{
SimpleTypeCaster caster = SimpleTypeCasterFactory.GetCaster(null, commonType);
getter = new VariantEventPropertyGetterAnyWCast(propertyGetterCache, assignedPropertyNumber, caster);
}
else
{
getter = new VariantEventPropertyGetterAny(propertyGetterCache, assignedPropertyNumber);
}
return(new VariantPropertyDesc(commonType, getter, true));
}