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ObjectDB version 2.5.0

queries with no wildcard characters. Fixed support of embedded objects comparison in queries. Fixed an ArrayIndexOutOfBoundsException in serializing entity objects.
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Apparent Lazy Loading issues.

use more than the database id for generation or comparison, it all fails horribly. Have a look
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Best File system for objectdb

Hello , whats the best Filesystem do you recommend for speed for objectdb? As far i know these ; btrfs , extfs4 , extfs3 , zfs , ntfs , fat32 , EXOFS , Lustre   Which one do you recommend ?     We have no such comparison data so we cannot recommend one file system over the other, but apparently
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Calculating age in query?

? thanks! Alex You can use a JPQL query with a simple date comparison: SELECT p FROM Person p WHERE p
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Calendar in Criteria Querys

. Anyway, the following example demonstrates criteria queries with Calendar. The usual comparison methods
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Compare old and new schema

etc... All these changes frequently take place between software versions and an automatic comparison of old schema vs
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Create simple index for a Id field

operations (see this comparison). But obviously a HashMap in memory is faster than any DBMS for simple
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EntityManager JPA or JDO impl and different behavior

"hashcode" method use more than the database id for generation or comparison, it all fails horribly
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evictAll() behavior

has to keep strong references to objects to detect changes on commit by snapshot comparison).   OK it works
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First query takes 4+ minutes to complete

in comparison responds within few seconds on average with the same number of records. We hope