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Tutorial
30

JPA Tutorials

Framework 3 web application: Spring MVC and JPA Maven Projects for Download The tutorials provide step by step instructions on how to create the sample applications. In addition, the sample applications
Result
27

ObjectDB License Agreement [ver. 2.0.4]

Please read carefully this software license agreement. By downloading, installing or using ... of this agreement will be binding, unless in writing and signed by an authorized representative of each party. 1 ... other humanly perceivable form. The Customer will use its best efforts and take all reasonable steps
Manual
24

Obtaining a JPA Database Connection

In JPA a database connection is represented by the EntityManager interface. Therefore, in order ... an EntityManager instance consists of two steps. First we need to obtain an instance ... is considered by ObjectDB to be a database url rather than a persistence unit name. The $objectdb
Manual
18

JPA Query Structure (JPQL / Criteria)

 of up to 6 clauses in the following format: SELECT ... FROM ... [WHERE ...] [GROUP BY ... [HAVING ...]] [ORDER BY ...] The first two clauses, SELECT and FROM are required in every retrieval query (update and delete queries have a slightly different form). The other JPQL clauses, WHERE, GROUP BY
Manual
18

Chapter 4 - JPA Queries (JPQL / Criteria)

(and a criteria query) is explained by describing the main clauses of JPQL queries (SELECT, FROM, WHERE, GROUP BY, HAVING, ORDER BY): Then the expressions that are used for building JPQL and criteria query
Issue
15

Different behavior for two equal queries

. [Step 29] Apply selection and prepare final results. By the way, the second query also has way ... (which works): Query Plan Description ====================== Step 1: Process IndividualContact ($1) instances ------------------------------------------------ [Step 1a] Scan type com.quasado
Issue
15

queries under 2.7.6_4 significantly slower than under 2.7.6

$1.classIdentifier='(TC)')). [Step 1b] Order the results of step 1a by:   v$1. [Step 1c] Scan index ... ='(TC)')). [Step 1d] Order the results of step 1c by:   v$1. [Step 1e] Merge the results of steps 1b, 1d ... ='plannedState'))). Step 5: Group results --------------------- Group the results of step 4 by:   o
Issue
14

Best practise loading big data

we access the data block by block - in each block step by step and in each step value by value ... .steps) { MyValue v : s.values.get(0); } } The values are not referenced by ... (cascase=ALL, fetch=Lazy, target=MyStep} ArrayList steps; } @Entity { class
Forum
14

What are the steps of creating small web app?

What are the steps of creating small web app?
Forum
13

Pre-detach loading: retrieval by navigation not working in if statement

/questions/35359676/java-jpa-objectdb-pre-detach-loading-why-retrieval-by-navigation-and-access ... system a BooleanValue wrapper is ultimately an Element that can be referenced by ID, and meets ... boolean value is not the whole story.   By JVM optimizations I meant JIT Compiler optimizations and not