The API assumes that if the group identifier is set, then the message is part of a group.
API将假定设置了组标识符，且消息属于组的一部分。
The group identifier is set to the JMSXGroupId string property and the sequence number to the JMSXGroupSeq integer property.
组标识符设置为JMSXGroupId字符串属性，序列号设置为JMSXGroupSeq整数属性。
Group content-includes the group identifier, group level properties, and group member lists. There are two types of group content.
组内容——包括组标识符、组级别属性和组成员列表。
Each of the messages has been allocated the same 24-byte group identifier along with a logical sequence number running from 1 through 5.
为每条消息分配了相同的24位组标识符，且分别具有从1到5的逻辑序列号。
We achieve this by setting up a new consumer on each iteration that selects based on the group identifier and sequence number that we require.
为此，我们将在每个迭代上设置一个新使用者，以根据组标识符和所需的序列号进行选择。
If we receive the last message in a group, then we can obtain the group identifier and use its sequence number to determine the size of the group.
如果接收到了组中的最后一条消息，则可以获取组标识符，并使用其序列号来确定组的大小。
Next we create the usual JMS artifacts required to send a message, then generate a group identifier by taking a random 24-byte BigInteger and converting it to a hexadecimal string.
接下来，我们创建用于发送消息的常见JMS构件，然后采用 24 字节的BigInteger随机值，并将其转换为十六进制字符串，从而生成组标识符。
This binary string is comprised of the usual counter, which is needed for the DB2 MAX function to do the actual aggregation, the identifier for the aggregate object, and the group identifier.
这个二进制串由常用的计数器(DB 2max函数进行实际聚集计算时需要)、聚集对象的标识以及分组标识构成。
This binary string is comprised of the usual counter, which is needed for the DB2 MAX function to do the actual aggregation, the identifier for the aggregate object, and the group identifier.
这个二进制串由常用的计数器(DB 2max函数进行实际聚集计算时需要)、聚集对象的标识以及分组标识构成。
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