Package jakarta.mail

Class FetchProfile

java.lang.Object
jakarta.mail.FetchProfile
public class FetchProfile extends Object
Clients use a FetchProfile to list the Message attributes that it wishes to prefetch from the server for a range of messages.

Messages obtained from a Folder are light-weight objects that typically start off as empty references to the actual messages. Such a Message object is filled in "on-demand" when the appropriate get*() methods are invoked on that particular Message. Certain server-based message access protocols (Ex: IMAP) allow batch fetching of message attributes for a range of messages in a single request. Clients that want to use message attributes for a range of Messages (Example: to display the top-level headers in a headerlist) might want to use the optimization provided by such servers. The FetchProfile allows the client to indicate this desire to the server.

Note that implementations are not obligated to support FetchProfiles, since there might be cases where the backend service does not allow easy, efficient fetching of such profiles.

Sample code that illustrates the use of a FetchProfile is given below: 


  Message[] msgs = folder.getMessages();

  FetchProfile fp = new FetchProfile();
  fp.add(FetchProfile.Item.ENVELOPE);
  fp.add("X-mailer");
  folder.fetch(msgs, fp);
Author:
John Mani, Bill Shannon
See Also:

  • Nested Class Summary

    Nested Classes
    Modifier and Type
    Class
    Description
    static class 
    FetchProfile.Item
    This inner class is the base class of all items that can be requested in a FetchProfile.

  • Constructor Summary

    Constructors
    Constructor
    Description
    FetchProfile()
    Create an empty FetchProfile.

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    add(FetchProfile.Item item)
    Add the given special item as one of the attributes to be prefetched.
    void
    add(String headerName)
    Add the specified header-field to the list of attributes to be prefetched.
    boolean
    contains(FetchProfile.Item item)
    Returns true if the fetch profile contains the given special item.
    boolean
    contains(String headerName)
    Returns true if the fetch profile contains the given header name.
    String[]
    getHeaderNames()
    Get the names of the header-fields set in this profile.
    FetchProfile.Item[]
    getItems()
    Get the items set in this profile.

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • FetchProfile

      public FetchProfile()
      Create an empty FetchProfile.

  • Method Details

    • add

      public void add(FetchProfile.Item item)
      Add the given special item as one of the attributes to be prefetched.
      Parameters:
      item - the special item to be fetched
      See Also:

    • add

      public void add(String headerName)
      Add the specified header-field to the list of attributes to be prefetched.
      Parameters:
      headerName - header to be prefetched

    • contains

      public boolean contains(FetchProfile.Item item)
      Returns true if the fetch profile contains the given special item.
      Parameters:
      item - the Item to test
      Returns:
      true if the fetch profile contains the given special item

    • contains

      public boolean contains(String headerName)
      Returns true if the fetch profile contains the given header name.
      Parameters:
      headerName - the header to test
      Returns:
      true if the fetch profile contains the given header name

    • getItems

      public FetchProfile.Item[] getItems()
      Get the items set in this profile.
      Returns:
      items set in this profile

    • getHeaderNames

      public String[] getHeaderNames()
      Get the names of the header-fields set in this profile.
      Returns:
      headers set in this profile