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Modifying existing entity objects that are stored in the database is based ... the database (no matter which way) it can simply be modified in memory from inside an active ... all the modified entity objects. Therefore, entity objects that are referenced from modified entity

="/" permissions="access,modify,create,delete" /> </user> <user username="$default" password="$$$###"> <dir path="/$user/" permissions="access|modify|create|delete"> <quota ... ="access,modify,create,delete" /> <dir path="/$user/" permissions="access|modify|create

of this License; and You must cause any modified files to carry prominent notices ... only and do not modify the License. You may add Your own attribution notices within Derivative Works ... attribution notices cannot be construed as modifying the License. You may add

we need an EntityManager instance. Operations that modify database content also require ... > Operations that modify database content, such as store, update, and delete ... you can invoke EntityManager methods that modify the database content, such as

>Operations that modify the content of a database require active transactions. Transactions are managed ... /jpa/EntityTransaction/begin">begin(); // Operations that modify the database should come ... of the managed entity is not affected by the rollback and is not returned to its pre-modified state

has been modified by an UPDATE query. Therefore, it is a good practice to use a separate EntityManager for UPDATE queries. As with any operation that modifies the database,  ... the number of objects that have been modified by the query. Selective Update

the database for the first time) is 1. In every transaction in which an entity object is modified ... do not match, indicating that the object has been modified by another user (using another modified (dirty) and increases its version number by 1.

, etc. The class members (constructors, methods and fields) can have any access modifiers (i.e. public ... > Static and final fields can never be persistent. The transient modifier can be used ... default. A field with a transient modifier can still become persistent by an explicit

with modified behavior should be specified in the metadata. The following file demonstrates JDO ... "> <class name="A"> <field name="f0" persistence-modifier="persistent" /> <field name="f1" persistence-modifier="none" /> <field name="f2" persistence

> that becomes persistent in line 25), and modified persistent objects (like a retrieved ArrayList, which is modified in line 29) are automatically stored in the database. Objects in memory ... classes (line 8). JDO enhancement includes modifying class files in order to add implementation