127 | How to check if an entity exists in a Database without loading it?Hi, I am trying to speed up some code - where i check if an entity exists in order to make a decision. In Java - It looks like this (pk - is the primary key of the entity): MyClass find = em.find(MyClass.class, pk); boolean exists = find != null; Is there a way to check the existence |
127 | How to check if the classes were enhanced correctly with valid OEM license?Hello, is there a way/tool how to check whether build classes were enhanced with valid OEM license? Scenario: 1) Build and enhance Java application with some Object DB license key. 2) Pick particular ... , etc.) Thank you. Maruta M Sedlakova To check if class MyEntity is enhanced using the OEM Enhancer use |
127 | How to check that ObjectDb licenses are activated?Hi Support, I have added license keys to objectDb.conf file and according to https://www.objectdb.com/forum/1384 I tried to check the activation status using following code EntityManagerFactory emf ... .4 it's always returns FALSE. Please provide information how to programmatically could be checked |
24 | How to check what is taking most space in DB fileHow to check what is taking most space in DB file |
14 | Collections in JPQL and Criteria Queries] EMPTY operator checks whether a specified collection is empty or not. For example: c.languages ... of languages in that collection. [NOT] MEMBER [OF] The [NOT] MEMBER OF operator checks if a specified element ... method for checking if a specified element is contained in a collection. JPA distinguishes between |
14 | Database Explorer of elements. Use the [First] and [Max] fields to set the result range. Check [Disable Cache] to bypass ... , for checking which indexes are used. The Reset button clears the content of all the fields. Refreshing ... used database at startup] check box specifies whether or not to open the last opened database |
13 | Database Management Settings="." mode="write" /> <locking version-check="true" /> <processing cache="64mb" max-threads="10 ... <locking version-check="true" /> The version-check attribute of the <locking> element specifies ... in the entity class or not. It can be disabled by setting the version-check attribute to false |
11 | Retrieving JPA Entity Objects for checking if a specified entity object or a specified persistent field is loaded. For example ... methods - one for checking an entity object and the other for checking a persistent field |
1 | [ODB1] Chapter 9 - ObjectDB Explorer. The "General" group of check boxes contains the following options: Whether or not to open the last ... the Extent of a class. The "Display" group of check boxes contains the following options: Default ... server using SSL. The settings in this page are used only when the "Use SSL" check box in the "Open |
1 | [ODB1] Chapter 8 - ObjectDB Server are checked. A valid configuration file is expected to be located on one of these paths. This section ... . The reload attribute specifies how often (in seconds) the server checks the configuration file for changes. For instance, a value of 30 (as specified above) indicates a check every 30 seconds. If a change |
