Walletau

Account a = [SELECT Id, Name,
Owner.Manager.Manager.ManagerId
FROM Account
WHERE Id = '001p000000K12dV' LIMIT 1];

System.debug('1: ' + a.OwnerId);
System.debug('2: ' + a.Owner.ManagerId);
System.debug('3: ' + a.Owner.Manager.Manager.Manager.Manager.FirstName);
System.debug('3: ' + a.Owner.Manager.LastName);

Walletau

Account a = [SELECT Id, Name,
Parent.Parent.Parent.ParentId
FROM Account
WHERE Id = '001p000000K12dV' LIMIT 1];

Walletau

Account a = [SELECT Id, Name,
ParentID,
Parent.ParentId
FROM Account
WHERE Id = '001p000000K12dV' LIMIT 1];

Walletau

Account a = [SELECT Id, Name,
             ParentID, 
             Parent.ParentId, 
             Parent.Parent.ParentId
            FROM Account
            WHERE Id = '0013600000NHSlW' LIMIT 1];

System.debug('1: ' + a.ParentId);
System.debug('2: ' + a.Parent.ParentId);
System.debug('3: ' + a.Parent.Parent.ParentId);

Walletau

public static Set<Id> getTopAccountIds(Set<Id> accountsTargeted) {
    Set<Id> topAccountIds = new Set<Id>();
    Set<Id> recursivelyTargetedAccountIds = new Set<Id>();
    for (Account targetedAccount : [
        SELECT Id,
            Name,
            ChildrenUserGroupId__c,
            ChildrenIncludedUserGroupId__c,
            UserGroupId__c,
            ParentUserGroupId__c,

Walletau

public static Set<Id> getTopAccountIds(Set<Id> accountsTargeted) {
    Set<Id> topAccountIds = new Set<Id>();
    Set<Id> recursivelyTargetedAccountIds = new Set<Id>();
    for (Account targetedAccount : [
        SELECT Id,
            Name,
            ChildrenUserGroupId__c,
            ChildrenIncludedUserGroupId__c,
            UserGroupId__c,
            ParentUserGroupId__c,

Walletau

/**
 * Created by Nick Likane on 30/12/2016.
 */

public without sharing class SecurityUtil {
    // Default up down map
    public static Boolean GroupCalculationActive = false;
    //////////
    //Managing of specific share records
    //////////