About JOIN

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Soft Reference Object Cache Recommendation

(Trying again.  Last post, ~50 minutes to compose, failed, possibly due to an attachment upload size limit being exceeded before the post attempt.  =(  ) #1 2016-10-24 15:15 (Trying again.  Last post, ~50 minutes to compose, failed, possibly due to an attachment upload size limit b ...

 
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Schema update: package, class and field

Hello, how can it be specified in the schema, that an entity is moved to another package? Package Structure (version 1) com |- btc |- impl |- Class1.java |- internal |- Class2.java |- Class3.java Now I want to move Class2   from com.btc.internal to com.btc.impl #1 2015-07-13 14:40 Hello, how can it be specified in the schema, that an entity is moved to another package? Package ...

 
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Dependency from enhanced classes to the objectDB library

Hello, we have a Question to the dependency from enhanced classes (required for license) to the objectDB library. #1 2014-12-14 19:46 Hello, we have a Question to the dependency from enhanced classes (required for license) to the objectDB libr ...

 
release

2.6.5

... (no access during backup operation). Fixed JOIN FETCH bugs. Fixed a performance issue with mapped by fetch. ... in Mac OS. Fixed a bug in using FETCH JOIN in criteria queries. Fixed a bug in cascading remove when ...

 
release

2.6.1

... in Mac OS. Fixed a bug in using FETCH JOIN in criteria queries. Fixed a bug in cascading remove when ... and maps of invalid types. Changed JOIN FETCH to act as LEFT JOIN in path expressions. Updated ...

 
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Integration

Hi,   Is there a way to integrate ObjectDB with Spring Framework to add the benefits of Transaction Management and DAO Support?   Regards, #1 2010-12-01 18:37 Hi, Is there a way to integrate ObjectDB with Spring Framework to add the benefits of Transaction Managem ...

 
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Problem with distinct select, order by and equivalent alias/attribute path

Hi, while working with a (standard-)JPA-query generating framework we run into an exception when ordering the results of some projection when the order by expression is different (though logically equivalent) to the projection expression. Here is the example: ... + "from Street s " + "left join s.location as s_location " + "order by s_location.id ... + "from Street s " + "left join s.location as s_location " + "order by s.location.id ...

 
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Cast exception?

Somehow I am unable to persist an entity class I wrote with manual @Id. I have a small Player class and I wish to store it with user ID as the primary key. So I declared the (only) primary key field as: @Id public int uid; This is how I'm persisting the instance: #1 2014-06-02 19:13 I'm getting a weird exception: java.lang.ClassCastException: database.entity.Player cannot be cast to d ...

 
manual

JPA Criteria API Queries

Explains how to use the JPA Criteria API (CriteriaBuilder, CriteriaQuery, etc.) to build JPQL like queries.... roots. See JavaDoc Reference Page... , join join(attributeName, jt) From's method Create a join to the ...

 
release

2.6.0

... in Mac OS. Fixed a bug in using FETCH JOIN in criteria queries. Fixed a bug in cascading remove when ... and maps of invalid types. Changed JOIN FETCH to act as LEFT JOIN in path expressions. Updated ...