This Java program Implements RoleList API.A RoleList represents a list of roles (Role objects). It is used as parameter when creating a relation, and when trying to set several roles in a relation (via ‘setRoles()’ method). It is returned as part of a RoleResult, to provide roles successfully retrieved.
Here is the source code of the Java Program to Implement RoleList API.The Java program is successfully compiled and run on a Linux system. The program output is also shown below.
import java.util.Collection; import java.util.LinkedList; import java.util.List; import javax.management.MalformedObjectNameException; import javax.management.ObjectName; import javax.management.relation.Role; import javax.management.relation.RoleList; public class RoleListImpl { private RoleList roleList; /** Constructs an empty RoleList. **/ public RoleListImpl() { roleList = new RoleList(); } /** Constructs an empty RoleList with the initial capacity specified. **/ public RoleListImpl(int initialCapacity) { roleList = new RoleList(initialCapacity); } /** * Constructs a RoleList containing the elements of the List specified, in * the order in which they are returned by the List's iterator. **/ public RoleListImpl(List<Role> list) { roleList = new RoleList(list); } /** Inserts the specified element at the specified position in this list. **/ public void add(int index, Object element) { roleList.add(index, element); } /** Inserts the role specified as an element at the position specified. **/ public void add(int index, Role role) { roleList.add(index, role); } /** Appends the specified element to the end of this list. **/ public boolean add(Object o) { return roleList.add(o); } /** Adds the Role specified as the last element of the list. **/ public void add(Role role) { roleList.add(role); } /** * Appends all of the elements in the specified collection to the end of * this list, in the order that they are returned by the specified * collection's Iterator. **/ public boolean addAll(Collection<?> c) { return roleList.addAll(c); } /** * Inserts all of the elements in the specified collection into this list, * starting at the specified position. **/ public boolean addAll(int index, Collection<?> c) { return roleList.addAll(index, c); } /** * Inserts all of the elements in the RoleList specified into this list, * starting at the specified position, in the order in which they are * returned by the Iterator of the RoleList specified. **/ public boolean addAll(int index, RoleList roleList) { return this.roleList.addAll(index, roleList); } /** * Appends all the elements in the RoleList specified to the end of the * list, in the order in which they are returned by the Iterator of the * RoleList specified. **/ public boolean addAll(RoleList roleList) { return roleList.addAll(roleList); } /** vReturn a view of this list as a List<Role>. **/ public List<Role> asList() { return roleList.asList(); } /** * Replaces the element at the specified position in this list with the * specified element. **/ public Object set(int index, Object element) { return roleList.set(index, element); } /** Sets the element at the position specified to be the role specified. **/ public void set(int index, Role role) { roleList.set(index, role); } public static void main(String... arg) throws MalformedObjectNameException { RoleListImpl roleList = new RoleListImpl(); List<ObjectName> rolelist1 = new LinkedList<ObjectName>(); rolelist1.add(new ObjectName("domain1","key1","value1")); rolelist1.add(new ObjectName("domain2","key2","value2")); roleList.add(0, new Role("rolename1", rolelist1)); List<ObjectName> roleList2 = new LinkedList<ObjectName>(); roleList2.add(new ObjectName("domain3","key3","value3")); roleList2.add(new ObjectName("domain4","key4","value4")); roleList.add(1, new Role("rolename2", roleList2)); List<Role> list = roleList.asList(); int index = 0; while (index < list.size()) { System.out.println(list.get(index++) + "\t"); } System.out.println(); } }
$ javac RoleListImpl.java $ java RoleListImpl role name: rolename1; role value: domain1:key1=value1, domain2:key2=value2 role name: rolename2; role value: domain3:key3=value3, domain4:key4=value4
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