persistence

问题 This is from Apple docs: When you design a game that reports scores to Game Center, you should also consider the security needs of your game. You want scores reported to Game Center to be an accurate accounting of how players are doing. Here are two suggestions: Store your game’s preferences and saved games in a secure format, rather than in clear text. If your game’s data is stored in clear text, a player can download the saved game data using iTunes, modify it, and resync it back to the

问题 Closed . This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 6 years ago . What are the lightweight options one has to persist Java objects ? I'm looking for the easiest possible solution. I don't want anything fancy featurewise just something simple that works with reasonnably simple objects (some collections, relationships and simple inheritance)

问题 I have a 400 million lines of unique key-value info that I would like to be available for quick look ups in a script. I am wondering what would be a slick way of doing this. I did consider the following but not sure if there is a way to disk map the dictionary and without using a lot of memory except during dictionary creation. pickled dictionary object : not sure if this is an optimum solution for my problem NoSQL type dbases : ideally want something which has minimum dependency on third

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 2 years ago . I was wondering... What's the best way to save data in Unity games. JSONs? If so, how? Thanks 回答1: Short answer to your long question! Here are some of the different Ways and Methods to Save data for Unity Projects: Platform-Independent: One way of saving data in Unity3D in a

问题 I have been facing the below error while trying to save the object to database. I tried the solution mentioned here1 and here2 but no good. I was following a tutorial but the only difference is versions of Spring and Hibernate. I am able to persist the object directly using the SessionFactory but it fails with below error if I try this with HibernateDaoSupport spring.xml <bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource"> <property name="driverClassName" value="oracle.jdbc

问题 I have a windows application that uses an assembly that stores some configuration settings in the default application settings. The settings can be changed in run time and are persisted thus: Properties.Settings.Default.SelectedCOMPort = options.SelectedCOMPort; Properties.Settings.Default.Save(); The settings are saved correctly and I confirm this by looking at the user.config file saved in the users application directory E.g. C:\Documents and Settings\e399536\Local Settings\Application Data

问题 I'm setting up a standalone Java service with an in-process, in-memory HSQL database. Persistence.xml <persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd" version="2.0"> <persistence-unit name="manager"> <class>tr.silvercar.data.entities.User</class> <properties> <property name="javax.persistence.jdbc.driver" value=

问题 Right now I have java program whose classes are currently POJOs and stored in volatile memory. These need to be persisted. As I understand it two popular choices are JDO and the Java Persistence API. For someone who know little about SQL, Torque, etc, which is the easiest way to add persistence to my program's data? 回答1: The traditional way to serialise to the filesystem is to use Java Serialisation. However you need to implement Serializable everywhere. A simpler solution is to serialise to

问题 I am currently using Firebase Firestore as a primary backend that retrieves data from a variety of sources. I also use Android's Room for my mobile backend. When the phone receives data it is stored in the Room database in the event the user will not go online again for days even weeks. After looking through the device files, I see firestore saves the data in files under the /data/data/<your-app>/databases directory. The file looks something like this I have read the offline persistence docs

问题 I have a doubt name attribute is there in both @Entity and @Table for example I am allowed to have same value for name attribute @Entity(name = "someThing") @Table(name = "someThing") and I can have different names as well for same class @Entity(name = "someThing") @Table(name = "otherThing") can anybody tell me what is the difference between these two and why we have same attribute in both ? 回答1: @Entity(name = "someThing") => this name will be used to name the Entity @Table(name =