Type System
AMQP defines a self-describing encoding scheme allowing interoperable representation of a wide range of commonly used types. It also allows typed data to be annotated with additional meaning. The example given in the specification is indicating a particular string value is in fact to be understood as a URL. Likewise a map value containing key-value pairs for 'name', 'address' etc., might be annotated as being of representation of a 'customer' type.
The type-system is used to define a message format allowing standard and extended meta-data to be expressed and understood by processing entities. It is also used to define the communication primitives through which messages are exchanged between such entities, i.e. the AMQP frame bodies.
Read more about this topic: Advanced Message Queuing Protocol
Famous quotes containing the words type and/or system:
“This immediate dependence of language upon nature, this conversion of an outward phenomenon into a type of somewhat in human life, never loses its power to affect us. It is this which gives that piquancy to the conversation of a strong-natured farmer or backwoodsman, which all men relish.”
—Ralph Waldo Emerson (1803–1882)
“The dominant metaphor of conceptual relativism, that of differing points of view, seems to betray an underlying paradox. Different points of view make sense, but only if there is a common co-ordinate system on which to plot them; yet the existence of a common system belies the claim of dramatic incomparability.”
—Donald Davidson (b. 1917)