This tutorial covers setting up Arch (and Arch-based distros like Manjaro etc.) to use a swap file, enable hibernation, and cover a few things in the case of doing this on a LUKS root partition. If you encrypt your root partition AND your swap partition, then you will need to enter two decrypt passphrases (one for root and one for your swap partition) unless you also mount your LUKS swap partition with a keyfile (in which case you'll need to edit /etc/fstab and /etc/cyrpttab) - for a swapfile you don't have to worry about any of that.if you use LUKS for encrypting your root partition, then you either have to encrypt your swap partition to maintain security (swap can contain sensitive information that is exploitable) or you can simply use a swapfile on your root partition (which is then encrypted along with everything else on the root partition).you can increase / decrease it's size much easier than resizing partitions.However, there are several advantages to simply using a swap file on your root partition (the partition you installed Linux on). Many Linux distribution installers will create an extra partition for swap. The below code shows the Initialization of criteria object:Ĭriteria criteria=session.You may want/need to create and enable a swap file on your machine. Hibernate acts as an additional layer on top of JDBC and enables you to implement. Hibernate is probably the most popular JPA implementation and one of the most popular Java frameworks in general. The below code shows the initialization of Query object: Hibernate is a java based ORM tool that provides a framework for mapping application domain objects to the relational database tables and vice versa. Criteria objectsĪre also used to retrieve data from databases. Hibernate Query Language (HQL) to get data from the database. The and packageĬontains Query and Criteria interface, respectively. The commit() function is used to close the Transaction t=session.beginTransaction() The below code shows the creation of Transaction object: Provides the instruction to the database for transaction management. The object of the session creates a Transaction object. The below code shows the creation of Session object: It is used to executeĬRUD operations (insert, delete, update, edit). A SessionFactory object is used to create a Session object, which is It takes the JDBC information from cfg object and creates a ![]() The below code shows the creation of SessionFactory object: It is a threadsafe object and used by all the threads in the application. The package contains the SessionFactory interface whose object can be obtained by the object of Configuration class. ![]() It reads both mapping and configuration file. To activate the Hibernate Framework, we use the following TheĬonfiguration object is created only once during the application The package contains the ConfigurationĬlass, which consists of the properties and function files of Hibernate. ![]() Hibernateīefore the creation of the first Hibernate application, we must Hibernate Tutorials Introduction to Hibernate Hibernate History Hibernate Features Hibernate Architecture Hibernate Session Factory Hibernate Session Hibernate Examples Hibernate First Example Hibernate Annotations Example Web Application Example Hibernate GeneratedValue Strategies Hibernate Dialects Hibernate Inheritance Mapping Single Table Strategy Table per Class Strategy Joined Table Strategy Hibernate Mapping Hibernate Mapping Hibernate One To One Mapping Hibernate One To Many Mapping Hibernate Many To One Mapping Hibernate Many To Many Mapping Hibernate Named Query Named Query using XML file Named Query using annotation Hibernate Caching Hibernate Caching First level Cache Second Level Cache Hibernate Query Language (HQL) Hibernate Query Language Hibernate Criteria Query Language (HCQL) Hibernate Criteria Query Language Misc N+1 SELECT problem in hibernate Dirty checking in hibernate Lazy loading Hibernate configuration Cascade in Hibernate Hibernate life cycle Inverse in Hibernate Merge in Hibernate Composite key in Hibernate Load() vs.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |