private IHashCodeBuilder GetBuilder(Type instanceType)
{
if (!_builderCache.ContainsKey(instanceType))
{
IEnumerable<PropertyInfo> targetProperties = HashCodeParameterAttribute.GetDemarcatedProperties(instanceType);
var builder = new ReflectionHashCodeBuilder(targetProperties, this);
this.Register(instanceType, builder);
}
return _builderCache[instanceType];
}
public static string[] GetParameters(object instance, IEnumerable <PropertyInfo> properties, IHashCodeBuilderFactory builderFactory)
{
if (instance == null)
{
throw new ArgumentNullException("instance");
}
var parameterValues = new List <string>();
foreach (PropertyInfo property in properties)
{
object propValue = property.GetValue(instance, null);
if (propValue == null)
{
continue;
}
Type propertyType = property.PropertyType;
if (propValue is System.Collections.ICollection)
{
parameterValues.AddRange(GetParametersFromCollection(propValue as System.Collections.ICollection, builderFactory));
continue;
}
if (Helpers.IsPrimitiveType(propertyType))
{
parameterValues.Add(propValue.ToString());
}
else
{
var hashCodeBuilder = builderFactory.CreateInstance(propertyType) as ReflectionHashCodeBuilder;
var propValueProperties = hashCodeBuilder != null ?
hashCodeBuilder.TargetProperties : HashCodeParameterAttribute.GetDemarcatedProperties(propertyType);
parameterValues.AddRange(GetParameters(propValue, propValueProperties, builderFactory));
}
}
return(parameterValues
.Where(val => !string.IsNullOrEmpty(val))
.ToArray());
}
