persistence

I want to change the init.rc file of an android pad. But after I change it and reboot the system, the original init.rc comes back. How can I make the change to the init.rc persistently without rebuild the system (since I don't have the source code of the system)? Or is there any way to work around? tripler Unpack the uramdisk using following command in host PC(Linux) mkdir /tmp/initrc cd /tmp/initrd sudo mount /dev/sdb1 /mnt sdb1 is partion where uramdisk/uInitrd resides. dd bs=1 skip=64 if=/mnt/uInitrd of=initrd.gz gunzip initrd.gz At this point running the command file initrd should show:

I'm using Hibernate 3.5.2-FINAL with annotations to specify my persistence mappings. I'm struggling with modelling a relationship between an Application and a set of Platforms. Each application is available for a set of platforms. From all the reading and searching I've done, I think I need to have the platform enum class be persisted as an Entity, and to have a join table to represent the many-to-many relationship. I want the relationship to be unidirectional at the object level, that is, I want to be able to get the list of platforms for a given application, but I don't need to find out the

Is there a way to persist an enum to the DB using NHibernate? That is have a table of both the code and the name of each value in the enum. I want to keep the enum without an entity, but still have a foreign key (the int representation of the enum) from all other referencing entities to the enum's table. Why are you guys over complicating this? It is really simple. The mapping looks like this: <property name="OrganizationType"></property> The model property looks like this: public virtual OrganizationTypes OrganizationType { get; set; } The Enum looks like this: public enum OrganizationTypes {

if I have multiple threads, each use injector to get the EntityManager object, each use the em object to select a list of other class objects. Ready to be used in a for loop. If a thread finishes first and calls clear(), will that affect the other threads? Like the for loop will have exception? How about close()? If the answer is "It depends", what (class definition? method call?) and where (java code? annotation? xml?) should I look at to find out how is it depended? I did not write the source, I am just using someone else's library without documentation. Thank you. Here is full working

I am new to the Java world and JPA. I was studying JPA and came across many new terms like Entity, persistence. While reading, I could not understand the exact definition for Persistence Context . Can anyone explain it in simple laymen terms? What is it to do with the data used in the @Entity ? For example, I find this definition too complicated to understand: A persistence context is a set of entities such that for any persistent identity there is a unique entity instance. A persistence context handles a set of entities which hold data to be persisted in some persistence store (e.g. a

For our new product re-engineering, we are in the process of selecting the best framework from Java. As the consideration is to go for database agnostic approach for model, we are working on options between Struts + Spring with iBATIS or Hibernate. Please advice which is best as both offer persistence. Ibatis and Hibernate are quite different beasts. The way I tend to look at it is this: Hibernate works better if your view is more object-centric . If however you view is more database-centric then Ibatis is a much stronger choice. If you're in complete control of your schema and you don't have

Is there a way in PHP to use "out of session" variables, which would not be loaded/unloaded at every connexion, like in a Java server ? Please excuse me for the lack of accuracy, I don't figure out how to write it in a proper way. The main idea would be to have something like this : <?php ... // $variablesAlreadyLoaded is kind of "static" and shared between all PHP threads // No need to initialize/load/instantiate it. $myVar = $variablesAlreadyLoaded['aConstantValueForEveryone']; ... ?> I already did things like this using shmop and other weird things, but if there is a "clean" way to do this