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nanosecond information that may be present in the database. Hibernate can t just cut off this information. This can lead to problems if you try to compare your java.util.Date properties with the equals() method, because it isn t symmetric with the java.sql.Timestamp subclass equals() method. First, the right way (in any case) to compare two java.util.Date objects, which also works for any subclass, is aDate.getTime() > bDate.getTime() (for a greater-than comparison). Second, you can write a custom mapping type that cuts off the database nanosecond information and returns a java.util.Date in all cases. Currently (although this may change in the future), no such mapping type is built into Hibernate. Binary and large value mapping types Table 5.3 lists Hibernate types for handling binary data and large values. Note that only binary is supported as the type of an identifier property. If a property in your persistent Java class is of type byte[], Hibernate can map it to a VARBINARY column with the binary mapping type. (Note that the real SQL

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type depends on the dialect; for example, in PostgreSQL, the SQL type is BYTEA, and in Oracle it s RAW) If a property in your persistent Java class is of type javalangString, Hibernate can map it to an SQL CLOB column, with the text mapping type Note that in both cases, Hibernate initializes the property value right away, when the entity instance that holds the property variable is loaded This is inconvenient when you have to deal with potentially large values One solution is lazy loading through interception of field access, on demand However, this approach requires bytecode instrumentation of your persistent classes for the injection of extra code We ll discuss lazy loading through bytecode instrumentation and interception in chapter 13, section 1316, Lazy loading with interception A second solution is a different kind of property in your Java class.

B. Incorrect: Only the Windows Server 2003 family includes application recycling as a feature of IIS. This feature automatically restarts IIS applications and ensures that active users do not get disconnected during this process. C. Incorrect: Only the Windows Server 2003 and the Windows 2000 Server families include bandwidth throttling as a feature of IIS. This feature limits the amount of traffic that IIS can generate. It is useful for ensuring that Web services do not consume an Internet connection, thereby reducing performance for users and other Web sites. D. Incorrect: Only the Windows Server 2003 and the Windows 2000 Server families include IP address and domain name restrictions. Using this capability, it is possible to allow or disallow users based on their source IP address. Alternatively, filtering can be done based on the results of a reverse DNS lookup of the source IP address. E. Correct: The version of IIS included with Windows XP Professional does support content expiration. This feature improves the performance of the Web site by instructing the client and proxy servers to cache specified content. Cached content can be retrieved from the local system, without issuing a request to the Web server. Content expiration must be enabled only on content that does not change frequently, to ensure clients always retrieve an up-to-date version of the content.