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Listing 10-6. Asserting Our Expectation of a Non-null id Value assertNotNull(account.getId());

Printers can be shared in Samba as well, but you first need to set up your Linux printing environment. You read earlier how to do this with CUPS. After setting up the CUPS environment, you need the right parameters in the smb.conf file to make sure that your printers are shared. Listing 10-4 provides an example of a configuration that shares your CUPS printers automatically. Listing 10-4. You Need Some Specific Parameters in smb.conf to Make Sure That Your Printers Are Shared. [global] printing = cups printcap name = cups printcap cache time = 750 cups options = raw [printers] comment = All Printers path = /var/tmp printable = Yes create mask = 0600 browsable = No [print$] comment = Printer Drivers path = /var/lib/samba/printers write list = @ntadmin root force group = ntadmin create mask = 0664 directory mask = 0775

You can now store XML in an XML column instead of a TEXT column. As mentioned, this is not an extensive look at everything you can do with XML but just a short introduction. Type in and execute the code in Listing 9-5. Listing 9-5. Using XML As a Data Type USE AdventureWorks2008; GO --1 CREATE TABLE #CustomerList (CustomerInfo XML); --2 DECLARE @XMLInfo XML;

As you can see, the Samba printing environment consists of three different parts: [global], [printers], and [print$] First, the [global] section contains four parameters to determine how to handle printing: printing = cups: This option sets CUPS as the default printing system Alternatively, you could use the legacy LPD print system, but CUPS is so much more advanced that modern Linux systems don t use LPD anymore printcap name = cups: This parameter indicates that the file containing printer definitions is not the legacy /etc/printcap that was used by LPD printing, but the CUPS subsystem printcap cache time = 750: This option specifies the number of seconds before Samba checks the CUPS configuration again to see if any new printers were defined cups options = raw: This option specifies how print jobs offered to the CUPS server are handled.

The test of Listing 10-6 is indicative of success, but not proof, and so we will now use the assigned primary key to retrieve the appropriate entity from the database by calling the DAO s read() method in Listing 10-7.

Because CUPS can t understand the data format generated by the Samba server, you should set this option to raw After the generic options in the [global] section, you must define two shares for the printers as well The share [printers] sets up an environment in which all printers can store their temporary print jobs, and the [print$] share is used to store printer drivers In both shares you refer to a directory where the temporary files and printer drivers are stored Make sure that you refer to an existing directory here In the example in Listing 10-4, all printers on the server are shared, but it s possible to share just one printer as well, as shown in Listing 10-5 Listing 10-5.

--3 SET @XMLInfo = (SELECT CustomerID, LastName, FirstName, MiddleName FROM Person.Person AS p INNER JOIN Sales.Customer AS c ON p.BusinessEntityID = c.PersonID FOR XML PATH); --4 INSERT INTO #CustomerList(CustomerInfo) VALUES(@XMLInfo); --5 SELECT CustomerInfo FROM #CustomerList; DROP TABLE #CustomerList; Figure 9-8 shows the results. Statement 1 creates a table with an XML column. Statement 2 declares a variable with the XML data type. Statement 3 saves the information in XML format about each customer from the Sales.Customer and Person.Person tables into a variable. The data comes from the same query that you saw in the previous section. Statement 4 inserts a row into the #CustomerList table using the variable. Query 5 returns the CustomerInfo column from the table without using the FOR XML clause. Since the table stores the data in XML format, the statement looks just like a regular SELECT statement yet returns the data as XML.