/// <summary>
/// Create a new <see cref="UserEntityPermissionTuple"/>.
/// </summary>
/// <param name="userRuleSet">
/// An object that represents a set of rules.
/// </param>
/// <param name="entityId">
/// The ID of the entity.
/// </param>
/// <param name="permissionIds">
/// The permissions. This cannot be null.
/// </param>
/// <exception cref="ArgumentNullException">
/// <paramref name="permissionIds"/> cannot be null.
/// </exception>
/// <seealso cref="UserRuleSet"/>
/// <seealso cref="EntityId"/>
/// <seealso cref="PermissionIds"/>
public RuleSetEntityPermissionTuple(UserRuleSet userRuleSet, long entityId, IEnumerable <long> permissionIds)
{
if (permissionIds == null)
{
throw new ArgumentNullException("permissionIds");
}
UserRuleSet = userRuleSet;
EntityId = entityId;
PermissionIds = (permissionIds.OrderBy(x => x)).ToArray();
_hashCode = GenerateHashCode(UserRuleSet, EntityId, PermissionIds);
}
/// <summary>
/// Create the hash code.
/// </summary>
/// <returns></returns>
internal static int GenerateHashCode(UserRuleSet userRuleSet, long entityId, IEnumerable <long> permissionIds)
{
if (permissionIds == null)
{
throw new ArgumentNullException("permissionIds");
}
int hashCode;
unchecked
{
hashCode = 17;
hashCode = ( int )(hashCode * 92821 + EqualityComparer <UserRuleSet> .Default.GetHashCode(userRuleSet));
hashCode = ( int )(hashCode * 92821 + entityId);
hashCode = permissionIds.Aggregate(hashCode, (current, permissionId) => current * 92821 + ( int )permissionId);
}
return(hashCode);
}
