About execute

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Issue
19

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
19

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
18

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

@Enumerated(EnumType.STRING) annotation inhibits proper execution of IN expressions.
Issue
18

NullpointerException when execute a commit

NullpointerException when execute a commit
Issue
18

Query execution causes an unexpected internal exception (Error 990)

Query execution causes an unexpected internal exception (Error 990)
Manual
17

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
Manual
17

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
17

Running JPA Queries

: Query.executeUpdate - for running only DELETE and UPDATE queries. Ordinary Query Execution ... of fully built Country instances would be more efficient. Single Result Query Execution ... collection after query execution (e.g. by results.get(0)). To eliminate this routine operation JPA
JDO Doc
15

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
Result
15

ObjectDB Object Database Features

annotations (@NamedQuery) and XML. Query parameters for efficient reuse of one query in multiple executions ... database content. Query execution using JPA JPQL and JDO JDOQL + query execution plan explanation ... as Windows EXE and Unix/Linux/Mac OS executable script. Easily managed from a system tray icon