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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
Tutorial
12

Getting Started with JPA and Eclipse

and menus might look slightly different but the code would be the same). This tutorial consists of the following steps:
Tutorial
12

Getting Started with JPA and NetBeans

might look slightly different but the code would be the same). This tutorial consists of the following steps:
Tutorial
12

Report Generation with BIRT and JPA

will be presented in the BIRT report using a chart and a table: The tutorial consists of the following steps
Issue
12

Issue with UPPER ?

====================== Step 1: Process Mitglied ($1) instances --------------------------------------- [Step 1a ... ($1) instances. [Step 1b] Evaluate fields in Mitglied ($1) instances. Step 2: Process IndividualProfile ($3) instances   (for every result of step 1
Forum
9

composite index not used in query

used, query plan:  Step 1: Process Action (a) instances ------------------------------------ [Step 1a] Scan index com.agile.hummingbird.Action[startDate] locating all the Action (a) instances. [Step 1b] Filter the results of step 1a retaining only results that satisfy: (a.startDate>:1
Forum
7

Performance issue in a query due to compareTo calls

are involved. You can improve the performance of queries by using indexes but the index step.stepNumber ... WHERE v.step.stepNumber = ? is very slow in comparing to the query: SELECT v FROM Values v WHERE v ... , cascade = CascadeType.REMOVE) private Values valuesRef; }   @Index (members = {"step.stepNumber
Forum
6

Slow searching with two indexes

(this) instances that satisfy: (this.receiver==:r). [Step 2] Order the results of step 1 by ... 2] Retrieve fields in NmeaBatch (this) instances. [Step 3] Order the results of step 2 by ... that only has a few tens of different values.   When I query by just the primary key, it's (of course) extremely
Forum
6

Performance in large transactions

  and  test2_ManyTransactions), mentioned in step 3, are not found in the projects. Please follow ... ; public class TransactionsPerformance { static int steps = 10000; public static void main ... );   for (int m = 0; m < steps; m++) {    TypedQuery q = em.createQuery("SELECT m FROM MyEntity
Forum
5

Dependency from enhanced classes to the objectDB library

, it worked. Can you tell us what we did wrong? Please provide step by step instructions on how to use ... ) at java.lang.ClassLoader.loadClass(Unknown Source) ... 78 more   How to use the example step-by ... ) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) Caused by: java.lang.ClassNotFoundException