The list of actual messages currently in the SQL-JMS system. Each row represents a single message that might be in a single queue or waiting to be received by multiple topic subscribers.

Column

Data Type

Constraint

Description

msg_class

VARCHAR(250)

NULL

The Java class of the message.

has_properties

NUMERIC(1)

NULL

Whether or not the message has properties beyond the standard JMS header properties, such as implementation or application specific properties.

reference_count

NUMERIC(10)

NULL

The number of topic subscribers still waiting to receive the message.

msg_id

NUMERIC(19)

NOT NULL

The unique identifier of the message used internally by the SQL-JMS system.

timestamp

NUMERIC(19)

NULL

JMS header property: the time the message was handed off to the provider to be sent.

correlation_id

VARCHAR(250)

NULL

JMS header property: the correlation ID. Currently, this property is unsupported and this column is always null.

reply_to

NUMERIC(19)

NULL

JMS header property: the destination where a reply to the message should be sent. This column uses the topic or queue ID to represent the reply destination. If no reply-to was specified in the JMS message the column has the value zero.

destination

NUMERIC(19)

NULL

JMS header property: the destination where the message is being sent. This column uses the topic or queue ID to represent the destination.

delivery_mode

NUMERIC(1)

NULL

JMS header property: the delivery mode of the message.

redelivered

NUMERIC(1)

NULL

JMS header property: an indication of whether the message is being redelivered.

type

VARCHAR(250)

NULL

JMS header property: the message type.

expiration

NUMERIC(19)

NULL

JMS header property: the message’s expiration value.

priority

NUMERIC(1)

NULL

JMS header property: the message priority.

small_body

VARBINARY(250)

NULL

The body of the message if the body is within the preset size for small bodies.

large_body

LONG VARBINARY

NULL

The body of the message if the body is larger than the preset size for small bodies.


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