ormlite

问题 I'm trying to create a join query using QueryBuilder for two different classes, a Product class and a Coupon class, that references a Product attribute, the storeId . public class Coupon { @DatabaseField(columnName = TableColumns.PRODUCT, foreign = true, foreignColumnName = Product.TableColumns.STOREID) private Product product; } public class Product { @DatabaseField(columnName = TableColumns.ID, generatedId = true) private Integer id; @DatabaseField(columnName = TableColumns.STOREID, index =

问题 I'm getting this error on ORM Lite when creating table ActivityLog : 10-23 04:06:32.255: E/com.timelord.dao.DatabaseHelper(1487): Caused by: java.sql.SQLException: ORMLite can't store unknown class class com.timelord.pojo.Category for field 'category'. Serializable fields must specify dataType=DataType.SERIALIZABLE I suspected that this is caused by the multi level foreign key. As you can see from the POJO class below, ActivityLog has Activity, and Activity has Category. Activity and Category

问题 Given a sqlite database as input, I want to know how can i can generate an ORMLite java class that map with the associated database. Many thanks. 回答1: You could try Telosys Tools , an Eclipse plugin for code generation working from an existing database with customizable Velocity templates See: https://sites.google.com/site/telosystools/ A set of templates is available on GitHub for JPA : //github.com/telosys-tools-community/jpa-templates-TT206-v2 A Java class for JPA is very near to ORMLite

问题 Given a sqlite database as input, I want to know how can i can generate an ORMLite java class that map with the associated database. Many thanks. 回答1: You could try Telosys Tools , an Eclipse plugin for code generation working from an existing database with customizable Velocity templates See: https://sites.google.com/site/telosystools/ A set of templates is available on GitHub for JPA : //github.com/telosys-tools-community/jpa-templates-TT206-v2 A Java class for JPA is very near to ORMLite

问题 I'm downloading an SQLite database file from a server to the Android device of the user. After the download, I insert or replace some tables in the local database using the downloaded database. I use ORMLite 4.47 for this. First I attach the database files to the DatabaseConnection: DatabaseConnection con = null; con = conSrc.getReadWriteConnection(); con.executeStatement("attach database '" + localDatabase.getAbsolutePath() + "' as '" + localDb + "'", DatabaseConnection.DEFAULT_RESULT_FLAGS)

问题 I want to order my data objects from an ORMLite DAO case insensitively. Currently I am using the following sqlite code to order my owner items case sensitively: ownerDao.queryBuilder().orderBy("Name", true).query(); I see here that sqlite supports case insensitive "order by" with the following raw SQL: SELECT * FROM owner ORDER BY Name COLLATE NOCASE Any easy way (easier than calling queryRaw() ) of adding the desired suffix? Could an alternative solution be to set the columnDefinition

问题 Using ORMLite for Android, I need to build a query that returns orders by order id or by customer name. Please consider the following class declarations: @DatabaseTable(tableName = "order") public class Order { @DatabaseField(generatedId = true) private Long id; @DatabaseField(foreign = true, canBeNull = false, foreignAutoRefresh = true, columnName = "customer_id") private Customer customer; // default constructor, getters and setters... } @DatabaseTable(tableName = "customer") public class

问题 I've been using ORMLite in my application and I was considering whether to move to greenDAO. Performance is a huge part of that decision, and greenDAO's Features page says: For the same given entity, greenDAO inserts and updates entities over 2 times faster, and loads entities 4.5 times faster for loading entities than ORMLite. ... (Figures and chart updated 10-23-2011) I thought ORMLite's config file generation step should remove the need for reflection at runtime. The ORMLite changlog

问题 I have an base class Peripheral . Classes Sensor and Master are extensions of Peripheral . I need ORMlite to instantiate my Peripheral objects that were previously saved. Obviously any attempt to instantiate Peripheral reflectively will result in a ClassInstantiationException due to its abstractness. How can I have ORMlite load any Peripheral object since Peripheral is abstract? Here is the sample of what I am doing: @DatabaseTable(tableName="Peripheral") abstract class Peripheral {

问题 I am using ormLite to store data on device. I can not understand why but when I store about 100 objects some of them stores too long time, up to second. Here is the code from DatabaseManager: public class DatabaseManager public void addSomeObject(SomeObject object) { try { getHelper().getSomeObjectDao().create(object); } catch (SQLException e) { e.printStackTrace(); } } } public class DatabaseHelper extends OrmLiteSqliteOpenHelper public Dao<SomeObject, Integer> getSomeObjectDao() { if (null