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Issue
21

Query Execution Error

')).contracts.active=true)))) results in "Query Execution Error===null" in Explorer and Internal Exception
Issue
21

Sometimes the ObjectDB throws an internal expeption if a find() was executed

Sometimes the ObjectDB throws an internal exception if a find() was executed. It is a sporadic issue that occurs only with Objectdb 2.7.0_b2 and only if the entites are enhanced. (We don't enabled the new property "objectdb.temp.extended-ref-retrieval" from http://www.objectdb.com/database/forum
Issue
21

Sometimes the ObjectDB throws an internal expeption if a persist() was executed

reported problem is not solved. We have found the cause. The test was mistakenly executed on a test machine
Issue
20

@Enumerated(EnumType.STRING) annotation inhibits proper execution of IN expressions.

@Enumerated(EnumType.STRING) annotation inhibits proper execution of IN expressions.
Issue
20

NullpointerException when execute a commit

NullpointerException when execute a commit
Issue
20

Query execution causes an unexpected internal exception (Error 990)

Query execution causes an unexpected internal exception (Error 990)
Manual
19

FROM clause (JPQL / Criteria API)

variables forming nested loops (outer and inner) might prevent query execution within a reasonable response time. Database Management Systems (DBMS), including ObjectDB, try to optimize execution ... is avoided. The above query, for example, can be executed as follows. An outer loop iterates with c1
Manual
19

Index Definition

the iteration can be avoided and complex queries over millions of objects can be executed quickly ... execution. Indexes are especially efficient in lookup and range queries: SELECT p FROM Point p WHERE p.x ... enables quick execution of the following queries: SELECT p FROM Point p WHERE p.x = 100 AND p.y = 100
JDO Doc
17

javax.jdo.Query

with a PersistenceManager. Multiple queries might be executed simultaneously by different threads, but the implementation might choose to execute them serially. In either case, the implementation must be thread safe ... : this.fieldName. The Query interface provides methods which execute the query based on the parameters
Manual
17

DELETE Queries in JPA/JPQL

the database, DELETE queries do not retrieve data from the database, but when executed, delete specified ... queries can only be executed within an active transaction and the changes are visible to other users ... all the objects in the database: DELETE FROM Object DELETE queries are executed using the executeUpdate