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package org.apache.catalina.users;
import java.util.ArrayList;
import java.util.Iterator;
import org.apache.catalina.Group;
import org.apache.catalina.Role;
import org.apache.catalina.User;
import org.apache.catalina.UserDatabase;
/**
* <p>Concrete implementation of {@link Group} for the
* {@link MemoryUserDatabase} implementation of {@link UserDatabase}.</p>
*
* @author Craig R. McClanahan
* @version $Revision: 1.3 $ $Date: 2007/05/05 05:32:29 $
* @since 4.1
*/
public class MemoryGroup extends AbstractGroup {
// ----------------------------------------------------------- Constructors
/**
* Package-private constructor used by the factory method in
* {@link MemoryUserDatabase}.
*
* @param database The {@link MemoryUserDatabase} that owns this group
* @param groupname Group name of this group
* @param description Description of this group
*/
MemoryGroup(MemoryUserDatabase database,
String groupname, String description) {
super();
this.database = database;
setGroupname(groupname);
setDescription(description);
}
// ----------------------------------------------------- Instance Variables
/**
* The {@link MemoryUserDatabase} that owns this group.
*/
protected MemoryUserDatabase database = null;
/**
* The set of {@link Role}s associated with this group.
*/
protected ArrayList roles = new ArrayList();
// ------------------------------------------------------------- Properties
/**
* Return the set of {@link Role}s assigned specifically to this group.
*/
public Iterator getRoles() {
synchronized (roles) {
return (roles.iterator());
}
}
/**
* Return the {@link UserDatabase} within which this Group is defined.
*/
public UserDatabase getUserDatabase() {
return (this.database);
}
/**
* Return the set of {@link User}s that are members of this group.
*/
public Iterator getUsers() {
ArrayList results = new ArrayList();
Iterator users = database.getUsers();
while (users.hasNext()) {
MemoryUser user = (MemoryUser) users.next();
if (user.isInGroup(this)) {
results.add(user);
}
}
return (results.iterator());
}
// --------------------------------------------------------- Public Methods
/**
* Add a new {@link Role} to those assigned specifically to this group.
*
* @param role The new role
*/
public void addRole(Role role) {
synchronized (roles) {
if (!roles.contains(role)) {
roles.add(role);
}
}
}
/**
* Is this group specifically assigned the specified {@link Role}?
*
* @param role The role to check
*/
public boolean isInRole(Role role) {
synchronized (roles) {
return (roles.contains(role));
}
}
/**
* Remove a {@link Role} from those assigned to this group.
*
* @param role The old role
*/
public void removeRole(Role role) {
synchronized (roles) {
roles.remove(role);
}
}
/**
* Remove all {@link Role}s from those assigned to this group.
*/
public void removeRoles() {
synchronized (roles) {
roles.clear();
}
}
/**
* <p>Return a String representation of this group in XML format.</p>
*/
public String toString() {
StringBuffer sb = new StringBuffer("<group groupname=\"");
sb.append(groupname);
sb.append("\"");
if (description != null) {
sb.append(" description=\"");
sb.append(description);
sb.append("\"");
}
synchronized (roles) {
if (roles.size() > 0) {
sb.append(" roles=\"");
int n = 0;
Iterator values = roles.iterator();
while (values.hasNext()) {
if (n > 0) {
sb.append(',');
}
n++;
sb.append((String) ((Role) values.next()).getRolename());
}
sb.append("\"");
}
}
sb.append("/>");
return (sb.toString());
}
}
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