Hibernate
ORM or simply Hibernate, as it is called in short, is an
object-relational library for mapping in Java. It is designed to provide
a framework for mapping the object-oriented domain model of a
conventional relational database. It also solves various
object-relational impedance mismatch issues through the process of
replacing the direct accesses to persistence-related database with some
high-level functions of object handling.
The
primary feature of Hibernate is mapping from various Java classes to
the database tables and also from Java type data to the SQL type data.
Besides, it also provides the option of data retrieval as well as data
query. It generates various calls pertaining to SQL functionality.
Besides, it also helps developers save time along with labor by
automated object conversion as well as handling of result sets. Java
based applications that use Hibernate support databases of SQL with
hardly any performance overhead whatsoever.
Hibernate
also comes up with ORM, which has everything to do with helping an
application to achieve a certain degree of persistence. Again,
Persistence can best be defined as the intention of the data of an
application to outlast the process of the application itself. In terms
of Java, it is to make sure that the state of the objects lives beyond
the JVM scope of the same state that is available subsequently.
Specifically,
Hibernate ORM is also concerned with the persistence of data because it
applies to RDBMS. When we talk about the fraternity of the
Object-Oriented applications, there have often been a hue and cry
regarding usage of an ODBMS instead of RDBMS. It should be apt to
mention at this juncture that RDBMS still remains extremely popular
mechanism of persistence and it is likely to remain so in the days to
come, and credit for this goes to Hibernate.
Its
applications are also designed to define the persistent classes, which
are mapped to the database tables. Besides taking care of Java class
mapping to the database tables and from data types of Java to the data
types of SQL, the applications also provide a wide range of retrieval
facilities as well as data queries. They are also equipped to reduce the
development time significantly, for otherwise manual handling of JDBC
and SQL can be tediously time consuming and laborious.
The
USP of Hibernate is that it is designed to considerably reduce the time
for development, which is otherwise spent in handling data in JDBC and
SQL. It’s another primary objective is to relieve the developers from
most of the tasks (almost 95 percent) pertaining to programming that is
related with common data persistence, through the process of eliminating
the need of manual as well as hand-crafted processing of data with the
use of JDBC and SQL.
However,
Hibernate like most of the other persistent solutions cannot hide the
SQL power and thus, makes sure that developers get more than what they
invest. According to a certain school of thoughts, it might not be the
most ideal solution when it comes to data-centric applications that can
only use the store procedures for implementing business logic into a
database it is extremely useful when it comes to dealing with models of
object-oriented domains and business logic. Also, it is helpful in
removing and encapsulating the vendor-specific SQL codes. It also helps
in translating sets of results from the tabular format to graphical
format.
A
majority of the functionality that is provided by Hibernate is
configurable. This phenomenon allows the developers to opt between
various strategies that are in-build with the library. However, whenever
the built-in strategies fall short of requirements, it provides the
option of plugging in the developers’ own custom implementation through
the process of implementation of an interface. Extension points
generally include primary key generation, SQL dialect support, caching
strategies, JDBC connection management, transaction management, ORM
strategies, property access strategies, proxy creation etc.
It
also has the capacity of abstracting the environment in which it is
deployed. In the case of an environment that is not managed, Hibernate
is equipped to take care of the transactions as well as the JDBC
connections.
However,
in case of environments that are managed, Hibernate can integrate with
the container-managed transactions as well as data sources. It can well
be configured for the deployment in managed as well as non managed
environments. In both the environments, the first thing that is to be
done is starting Hibernate. You can get in touch with Java web development companies who can help you develop web apps that are stable, scalable and secure.
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