15 | Database size is much larger than expected (x2)I store images into objectdb. The schema is : <URI>::=(<sUrl>, <cMark>, <iSize>, <baBody>, <id ... will fail after 155,648 insertions with -Xmx1432m, ... NO = 151552 @ 8042217472 id = 0 @ 7703244276 ... so many memory that it fails with "-Xmx1432m", even if em.clear() at every 0xFFF insertions |
3 | Database Schema Evolution of an old schema is loaded into memory it is automatically converted into an instance of the up to date |
3 | JPA Entity FieldsFields of persistable user defined classes (entity classes, embeddable classes and mapped superclasses) can be classified into the following five groups: Transient fields Persistent fields Inverse ... ; } If a version field exists, ObjectDB automatically injects the version value into that field. Version fields |
3 | Paths and Types in JPQL and Criteria API expressions in the above code can be divided into two main groups: FROM variable expressions, represented by ... affect the built query directly. The constructed expression must be integrated into query clauses |
3 | javax.persistence.OrderColumn is responsible for updating the ordering upon flushing to the database to reflect any insertion, deletion ... : "" Since: JPA 2.0 boolean insertable (Optional) Whether the column is included in SQL INSERT statements generated by the persistence provider. (Optional) Whether the column is included in SQL INSERT |
0 | Step 3: Define an EJB Session Bean: Manages the instantiation of the EJB class and injects an instance of the EJB class into the servlet (as shown in the next step). Prepares an EntityManager automatically and injects it into the em field |
0 | Step 3: Define a Spring DAO Component component class and injects an instance of the DAO component class into the controller, as shown in the next step. Prepares an EntityManager automatically and injects it into the em field |
0 | [ODB1] Chapter 9 - ObjectDB Explorer at the bottom. The "Database" window is also split into two sub windows. The top sub window displays general ... the Explorer into your Java code. Refreshing the Cache When a database is open in the Explorer using client |
0 | [ODB1] Chapter 1 - About ObjectDB integrated into any JSP/servlet web application. The JDO Guest Book sample provided with ObjectDB ... the JDO and ObjectDB jar files into the WEB-INF/lib directory of the web application, and database support (in embedded mode) is made available. |
0 | javax.jdo.spi.PersistenceCapable.ObjectIdFieldConsumer, boolean value) Store one field into the field manager. Store one field into the field manager ... fieldNumber, byte value) Store one field into the field manager. Store one field into the field ... storeCharField(int fieldNumber, char value) Store one field into the field manager. Store one field into |
