entity

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.NET Entity Framework - IEnumerable VS. IQueryable

Please see this line of code. This is an invocation of a stored procedure, which returns an ObjectResult<long?>. In order to extract the long values I added the Select:[详细]

2023-04-09 19:11 分类：问答
Entity Datagrid : best way to add computed values?

I have a WPF datagrid databound to a collectionviewsource, which is itself based of a entity query In my grid for example I have 3 columns Number1, Number2, Number3, all properties of an entity. If I[详细]

2023-04-09 10:12 分类：问答
LINQ Joining 2 tables

I have two tables in the database one contains a list of all possible grocery values. For Example Milk[详细]

2023-04-08 16:10 分类：问答
Java EE: EJB Entity, Web Standalone

Can you please tell me how is best to do? How can I create a new instance of an entity on web application if I have only the interface..[详细]

2023-04-08 05:13 分类：问答
How to get a JPA-persisted String[] column by ResultSet#getString() in JDBC?

I want to store multiple checkbox values in a single DB column. I don\'t want to store in a seperate table with @OneToMany.[详细]

2023-04-08 01:17 分类：问答
DDD: Model local identity inside agregate root

after reading the blue book (Eric Evan\'s Domain Driven Design) and starting applying the DDD concepts in a simple blog like application I have the following question, how do you model a local identit[详细]

2023-04-07 12:17 分类：问答
Having issues passing Objects among tiers

I\'m trying to do something that should be real simple but I\'m getting errors I don\'t know how to correct. Also, I don\'t even know if I\'m doing things the \"correct\" way.[详细]

2023-04-07 07:32 分类：问答
Entity Error in GDataDB example

Im getting the error \"the type or namespace name \'Entity\' could not be found\" from the following code snippet.[详细]

2023-04-07 02:48 分类：问答
Application Identity problem in Google App

I\'d like to use @Embeddable annotation. So, it suggest to define as Application Identity. I created as the Data Nucleus Documentation. But it still error.[详细]

2023-04-06 06:48 分类：问答
JPA - multiple jars defining @Entity objects

We are developing a web application with Spring, Hibernate and Maven in a very modular fashion. There are core projects defining data access and view specific stuff, then there are modules defining lo[详细]

2023-04-05 20:28 分类：问答