org.apache.catalina.users

## Class AbstractGroup

- java.lang.Object
- - org.apache.catalina.users.AbstractGroup

- All Implemented Interfaces:
    Principal, Group
  Direct Known Subclasses:
    MemoryGroup

      public abstract class AbstractGroup
      extends Object
      implements Group

  Convenience base class for `Group` implementations.

  Since:
    4.1
  Author:
    Craig R. McClanahan

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `protected String` | `description` The description of this group.
    `protected String` | `groupname` The group name of this group.

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `AbstractGroup()`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `abstract void` | `addRole(Role role)` Add a new `Role` to those assigned specifically to this group.
    `String` | `getDescription()` Return the description of this group.
    `String` | `getGroupname()` Return the group name of this group, which must be unique within the scope of a `UserDatabase`.
    `String` | `getName()` Make the principal name the same as the group name.
    `abstract Iterator<Role>` | `getRoles()` Return the set of `Role`s assigned specifically to this group.
    `abstract UserDatabase` | `getUserDatabase()` Return the `UserDatabase` within which this Group is defined.
    `abstract Iterator<User>` | `getUsers()` Return an Iterator over the set of `User`s that are members of this group.
    `abstract boolean` | `isInRole(Role role)` Is this group specifically assigned the specified `Role`?
    `abstract void` | `removeRole(Role role)` Remove a `Role` from those assigned to this group.
    `abstract void` | `removeRoles()` Remove all `Role`s from those assigned to this group.
    `void` | `setDescription(String description)` Set the description of this group.
    `void` | `setGroupname(String groupname)` Set the group name of this group, which must be unique within the scope of a `UserDatabase`.

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

    - ### Methods inherited from interface java.security.Principal

      `equals, hashCode, toString`

- - ### Field Detail

    - #### description

          protected String description

      The description of this group.

    - #### groupname

          protected String groupname

      The group name of this group.

  - ### Constructor Detail

    - #### AbstractGroup

          public AbstractGroup()

  - ### Method Detail

    - #### getDescription

          public String getDescription()

      Return the description of this group.
      Specified by:
        `getDescription` in interface `Group`
      Returns:
        the description of this group.

    - #### setDescription

          public void setDescription(String description)

      Set the description of this group.
      Specified by:
        `setDescription` in interface `Group`
      Parameters:
        `description` - The new description

    - #### getGroupname

          public String getGroupname()

      Return the group name of this group, which must be unique within the scope of a `UserDatabase`.
      Specified by:
        `getGroupname` in interface `Group`
      Returns:
        the group name of this group, which must be unique within the scope of a `UserDatabase`.

    - #### setGroupname

          public void setGroupname(String groupname)

      Set the group name of this group, which must be unique within the scope of a `UserDatabase`.
      Specified by:
        `setGroupname` in interface `Group`
      Parameters:
        `groupname` - The new group name

    - #### getRoles

          public abstract Iterator<Role> getRoles()

      Return the set of `Role`s assigned specifically to this group.
      Specified by:
        `getRoles` in interface `Group`
      Returns:
        the set of `Role`s assigned specifically to this group.

    - #### getUserDatabase

          public abstract UserDatabase getUserDatabase()

      Return the `UserDatabase` within which this Group is defined.
      Specified by:
        `getUserDatabase` in interface `Group`
      Returns:
        the `UserDatabase` within which this Group is defined.

    - #### getUsers

          public abstract Iterator<User> getUsers()

      Return an Iterator over the set of `User`s that are members of this group.
      Specified by:
        `getUsers` in interface `Group`
      Returns:
        the set of `User`s that are members of this group.

    - #### addRole

          public abstract void addRole(Role role)

      Add a new `Role` to those assigned specifically to this group.
      Specified by:
        `addRole` in interface `Group`
      Parameters:
        `role` - The new role

    - #### isInRole

          public abstract boolean isInRole(Role role)

      Is this group specifically assigned the specified `Role`?
      Specified by:
        `isInRole` in interface `Group`
      Parameters:
        `role` - The role to check
      Returns:
        `true` if the group is assigned to the specified role otherwise `false`

    - #### removeRole

          public abstract void removeRole(Role role)

      Remove a `Role` from those assigned to this group.
      Specified by:
        `removeRole` in interface `Group`
      Parameters:
        `role` - The old role

    - #### removeRoles

          public abstract void removeRoles()

      Remove all `Role`s from those assigned to this group.
      Specified by:
        `removeRoles` in interface `Group`

    - #### getName

          public String getName()

      Make the principal name the same as the group name.
      Specified by:
        `getName` in interface `Principal`

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