Package org.apache.qpid.protonj2.engine

Interface Attachments

  • All Known Implementing Classes:
    ProtonAttachments
    public interface Attachments
    Attachments API used to associate specific data with AMQP Resources

    • Method Detail

      • get

        <T> T get​(String key)
        Gets the user attached value that is associated with the given key, or null if no data is mapped to the key.
        Type Parameters:
        T - The type to cast the attached mapped value to if one is set.
        Parameters:
        key - The key to use to lookup the mapped data.
        Returns:
        the object associated with the given key in this Attachments instance.

      • get

        <T> T get​(String key,
          Class<T> typeClass)
        Gets the user set Attachments value that is associated with the given key, or null if no data is mapped to the key.
        Type Parameters:
        T - The type to cast the attached mapped value to if one is set.
        Parameters:
        key - The key to use to lookup the mapped data.
        typeClass - The Class that will be used when casting the returned mapped object.
        Returns:
        the object associated with the given key in this Attachments instance.

      • set

        <T> Attachments set​(String key,
                    T value)
        Maps a given object to the given key in this Attachments instance.
        Type Parameters:
        T - The type of the value being set
        Parameters:
        key - The key to assign the value to
        value - The value to map to the given key.
        Returns:
        this Attachments instance.

      • containsKey

        boolean containsKey​(String key)
        Checks if the given key has a value mapped to it in this Attachments instance.
        Parameters:
        key - The key to search for a mapping to in this Attachments instance.
        Returns:
        true if there is a value mapped to the given key in this Attachments instance.

      • clear

        Attachments clear()
        Returns:
        this Attachments instance with all mapped values and the linked resource cleared.