persistence

There are many variants on this kind of question. However I am specifically after a way to prevent a console application in Python from closing when it is not invoked from a terminal (or other console, as it may be called on Windows). An example where this could occur is double clicking a .py file from the Windows explorer. Typically I use something like the following code snippet, but it has the unfortunate side effect of operating even if the application is invoked from an existing terminal: def press_any_key(): if os.name == "nt": os.system("pause") atexit.register(press_any_key) It's also

I'm trying to use Android Application class (MyApplication.java) for storing data in some ArrayLists of strings and ints. I want that these data get's stored forever, like a database, but without using databases , to simplify my app. Currently the data get's stored, when I exit from the app, the process of the app still runs in background. But if I kill the process of the app, the data stored on MyApplication.java class get's removed. So I need some kind of function that stores the data from my variables of MyApplication in a file, and another function that restores the data into the variables

I'm developing a game with a database connection, and I use JPA to persist my data. Here is my Game entity : @Entity @Table(name = "game") public class Game implements Serializable { private static final long serialVersionUID = 1L; @Id @GeneratedValue(strategy = GenerationType.AUTO) @Column(name = "game_id") private int id; @Column(name = "name") private String name; @Column(name = "nbTurns") private int nbTurns; @Column(name = "playedOn") @Temporal(TemporalType.TIMESTAMP) private Date playedOn; @ElementCollection(fetch = FetchType.EAGER) @CollectionTable(name = "game_humans", joinColumns =

I'm quite new to Quartz and now I need to schedule some jobs in Spring web application. I know about Spring + Quartz integration (I'm using Spring v 3.1.1) but I'm wondering if this is the right way to follow. In particular I need to persist my scheduled tasks in a DB so I can re-initialize them when application is restarted. Are there some utilities provided by Spring scheduling wrapper to do this? Can you suggest me some "well known" approach to follow? Here is one way I handle this scenario. First in my Spring Configuration I specify a SchedulerFactoryBean from which I can inject the

I am starting with Firestore. I've read docs and tutorials about the offline data persistence but I have not really clear if Firestore downloads data again even if the content hasn't been modified. For example, if I have a query where the results will be updated once a week and I don't need that the app download the content again until the changes were made, what is the best way in terms of efficiency to write the code? Thanks! Sam Stern You want to use the "snapshot listener" API to listen to your query: https://firebase.google.com/docs/firestore/query-data/listen#listen_to_multiple_documents

I've got 2 entities in JPA: Entry and Comment. Entry contains two collections of Comment objects. @Entity public class Entry { ... @OneToMany(fetch = FetchType.EAGER, cascade = CascadeType.ALL) @IndexColumn(base = 1, name = "dnr") private List<Comment> descriptionComments = new ArrayList<Comment>(); @OneToMany(fetch = FetchType.EAGER, cascade = CascadeType.ALL) @IndexColumn(base = 1, name = "pmnr") private List<Comment> postMortemComments = new ArrayList<Comment>(); ... } To store such objects, JPA+Hibernate creates "Entry" table, "Comment" table and SINGLE "Entry_Comment": create table Entry