Hi all, I'm writing an application using windows form and c# 3.0. I was wondering if there is a recommended way of persist data across time. However, i do not want to touch the machine it is running on, as a result, i would like to store the data in the binary executable (preferably, due to the need not clutter up the user's folder with...
I have a question that I just don't feel like I've found a satisfactory answer for, either that or I've not been looking in the right place. Our system was originally built using .NET 1.1 (however the projects all now support 3.5) and all entities are persisted to the database using stored procedures and a "SQLHelper" that has the stan...
Is there an equvalent of SQL TEMEDIFF functionality in JPQL? Is that possible to query with JPQL to find the records in specific time range? ...
I'm using PS to store data in my app. I think I have a misunderstanding of how PS works. If anyone could tell me how to make it so that the bill I retrieve from PS is unencrypted as opposed to the encrypted bill I end up with? Note: I originally store and unencrypted bill! From what I can tell, it considers both bills, and both PO ob...
Hello, I have my domain object, Client, I've got a form on my JSP that is pre-populated with its data, I can take in amended values, and persist the object. Client has an abstract entity called MarketResearch, which is then extended by one of three more concrete sub-classes. I have a form to pre-populate some MarketResearch data, but ...
I'm using a DB table with various different entities. This means that I can't have an arbitrary number of fields in it to save all kinds of different entities. I want instead save just the most important fields (dates, reference IDs - kind of foreign key to various other tables, most important text fields etc.) and an additional text fie...
Hi! I'm doing a Java software-project at my university that mainly is about storing data-sets (management of software tests). The first thing I thought of was a simple SQL DB, however the necessary DB scheme is not available for now (let's say the project is stupid but there's no choice). Is a persistency framework like Hibernate able...
So far in my .Net coding adventures I've only had a need to save information to files. So I've used XmlSerializer and DataContractSerializer to serialize attributed classes to XML files. My next project, however, requires that I save and retrieve information from a SQL server database. I'm wondering what my options are for doing this. T...
Hello, I'm trying to find the best way to persist an object or in use the same object at a later point in the code. So, I create an object, then you're redirected to another page(a form) that needs to use variables from that object. That form is submitted to a third party and there is stuff done on their end and then they request a page ...
Greeting All, I want to achieve transparent persistence of Java objects through memory-mapped files (utilize the OS paging/swapping mechanism). My problem is: how can I move a Java object to my memory-mapped block ? Plus, how can I force a new object instance to reside in such blocks ? As you all know, a memory-mapped block can be see...
Hi there, I'm doing a project with reasonalby big DataBase. It's not a probper DB file, but a class with format as follows: DataBase.Nodes.Data=[[] for i in range(1,1000)] f.e. this DataBase is all together something like few thousands rows. Fisrt question - is the way I'm doing efficient, or is it better to use SQL, or any other "prope...
Hi there, I've big class in Python it's "DataBase-like" class. I want to save it to file - all including data. This is input(example to show the issue, in script database is like 10000 records): import cPickle # DataBase-like class class DataBase: class Arrays: pass class Zones: pass class Nodes: class CR: pass ...
Transparent persistence allows you to use regular objects instead of a database. The objects are automatically read from and written to disk. Examples of such systems are Gemstone and Rucksack (for common lisp). Simplified version of what they do: if you access foo.bar and bar is not in memory, it gets loaded from disk. If you do foo.ba...
First, I apologize if this is not an appropriate venue to ask this question, but I wasn't really sure where else to get input from. I have created an early version of a .NET object persistence library. Its features are: A very simple interface for persistence of POCOs. The main thing: support for just about every conceivable storage m...
Hi...i am new to iPhone programming.. my app is just like a quiz.. it has different type of quizs and many question in each quiz type i want to save the values like strings(quiz name) and integers(question number) when an application is closed so when the app is restarted i want to continue where it was stopped by using saved values H...
I have two persistence objects in my app: Things and tags attached to things. The app can generate collections of things with tags attached. Tag objects have a unique name (it doesn't make sense to tag something twice with the same tag). When inserting a Thing (with tag objects attached) some of these tag objects with the same name mayb...
I need some clarification on the right way to retry a "retryable" exception (e.g. something like lock wait timeout) when using java persistence. For example, with pseudocode like: EntityTransaction tx = em.getTransaction(); tx.begin(); for (a bunch of objects) { em.persist(object); } tx.commit(); I sometimes get an exception thrown...
Not sure what happened to Bold/Eco during the Borland/Codegear/Embarcadero transition but I sure miss it in the newer versions of Delphi. Anyone know of a framework that comes close? If not, maybe you could suggest a combination of libraries and components that comes close. ...
I'm working with classes in PHP. When I'm writing a class, I'm always thinking "This object is basically a one-off; it's not going to last beyond the page load." Consequently, all the logic in my classes basically construct themselves, do a few state changes, give some feedback, and die. Brine shrimp. Because of this, I've taken to usin...
I hope you'll excuse the seemingly broad nature of this question, but it gets quite specific. I'm building a document-based Cocoa application that works like most others except that I am using SQLCipher for my data store (a variant of SQLite), because you don't get to set your own persistent data store in Core Data, and also I really ne...