Hibernate Mapping

2. Can we insert multiple data in different tables at same time  through hibernate ?
Not sure what you mean by same time. Do you mean one command?

yes i mean to say can we insert multiple data in different tables with help of one command if yes than please give me a example..

and i checked this link http://www.laliluna.de/first-hibernate-example-tutorial.html but i need some live example to how can we use annotations  instead of hibernate.hbm.xml or mapping to insert and select multiple data at one command?

please help me out this.

A good tutorial on hibernate annotations -

http://ocpsoft.com/java/getting-started-quickly-with-hibernate-annotations/

You can map the pojo to multiple tables (using the one-to-many and many-to-many mappings). Hibernate will internally do the rest when you call a save on that pojo.

A good tutorial on hibernate annotations -

http://ocpsoft.com/java/getting-started-quickly-with-hibernate-annotations/

You can map the pojo to multiple tables (using the one-to-many and many-to-many mappings). Hibernate will internally do the rest when you call a save on that pojo.



please can you explain or give me  a example that how can i insert multiple data in different tables using hibernate  (the one-to-many and many-to-many mappings).
thanks in advance

hi a_b

http://ocpsoft.com/java/getting-started-quickly-with-hibernate-annotations/
example is really good but i want to know how can i insert multiple data in different tables using hibernate annotation as you said it can be done by the one-to-many and many-to-many mappings. but can it be done by with the help of annotations ?

please give me example..

annotataion are used to define the one to many or many to many mappings

http://onjava.com/pub/a/onjava/2007/02/08/an-introduction-to-hibernate-3-annotations.html

hi a_b

thanks for reply it is very good example for me..

can i know something extra like

what is the purpose to use one to many mapping ?
what is the purpose to use many to many mapping ?
what is the purpose to use many to one mapping ?

and how can we insert multiple data in different table through this mapping.
and can we use 2 or more tables data in one annotations class.. like select or insert ?
if possible than please provide a example.
thanks in advance

Look at page 2 of the example pointed to in the previous post -

"One of the most commonly-used relationships are many-to-one relationships. Suppose, in the above example, that each ModelPlane is associated with a PlaneType via a many-to-one relationship (in other words, each model plane is associated with exactly one plane type, although a given plane type can be associated with several model planes). You could map this as follows:"

i read page 2 and understand  but it explain only 1 table in one class


but i want to use 2 or more table in one annotations class is it possible  and
 how can we insert multiple data in different table through this mapping.
and can we use 2 or more tables data in one annotations class.. like select or insert ?
if possible than please provide a example.

many to many - http://www.xylax.net/hibernate/manytomany.html

hi a_b it is not as i m looking for .. as i told you that i m looking for example which contain combination of 2 or 3 or more table reference in one annotation class. i.e. so we can call or save or insert or select data through one annotation class from different tables without xml mapping  and using only one annotation class and relation mapping (many to one and one to many)..

i think now you getting my point.

thanks in advance.