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Manual
15

JPA / JDO Class Enhancer

ObjectDB Enhancer is a post compilation tool that improves performance by modifying the byte code of compiled classes after compilation. Enhancement is mainly for user-defined persistable classes (entity classes, embeddable classes and mapped superclasses), and is usually optional
Manual
15

Numbers in JPQL and Criteria Queries

The above examples demonstrate only integer expressions, but all the numeric types (byte, short, int, long, float
JDO Doc
12

javax.jdo.spi.PersistenceCapable

'. Since: JDO 1.0 byte CHECK_READ If jdoFieldFlags for a field includes CHECK_READ, then the field ... to call the jdoStateManager on read if the jdoFlags setting is not READ_OK or READ_WRITE_OK. Since: JDO 1.0 byte ... if the jdoFlags setting is not READ_WRITE_OK;. Since: JDO 1.0 byte LOAD_REQUIRED If jdoFlags is set
JDO Doc
11

javax.jdo.spi.StateManager

Since: JDO 1.0 byte getByteField( PersistenceCapable pc, int field, byte currentValue) Return ... , byte currentValue) The value of the field requested to be provided to the StateManager. The value ... byte replacingByteField( PersistenceCapable pc, int field) The replacement value of the field in
JDO Doc
9

javax.jdo.identity.ByteIdentity

, Comparable This class is for identity with a single byte field. Since: JDO 1.0 ByteIdentity() Constructor ...  pcClass, Byte key) Constructor with class and key. Constructor with class and key. Parameters: pcClass - the target class key - the key Since: JDO 1.0 ByteIdentity(Class pcClass, Byte key) Constructor
JPA Doc
7

javax.persistence.spi.ClassTransformer

occurs before the class is defined by the JVM. Since: JPA 1.0 byte[] transform(ClassLoader loader, String className, Class classBeingRedefined, ProtectionDomain protectionDomain, byte ... classfileBuffer - the input byte buffer in class file format - must not be modified Returns
JPA Doc
7

transform(loader, className, classBeingRedefined, protectionDomain, classfileBuffer)

Method javax.persistence.spi.ClassTransformer byte[] transform(   ClassLoader loader,   String className,   Class classBeingRedefined,   ProtectionDomain protectionDomain,   byte[] classfileBuffer ... domain of the class being defined or redefined classfileBuffer - the input byte buffer in class file
Forum
7

Soft Reference Object Cache Recommendation

objects before more recently accessed ones.  I attempted to use Java SoftReference to my large byte ... " level2="0" /> My persisted class, "JdoBlob2", only contains a byte ... byte[] data;// use makeDirty() when changing this array or any of its elements private transient
Forum
6

@OneToMany(fetch = FetchType.LAZY) list is always null

and MERGE the entity containing another one (OneToOne) entity with a byte[] array without calling ... { // ... id private byte[] data; public ByteData(byte[] data) { this.data = data ... } //... Parent parent = new Parent(new ByteData(new byte[]{1, 2, 3, 4, 5})); persist(parent
Forum
6

Database size is much larger than expected (x2)

>) ::=String ::=char ::=int ::=byte[] ::=@ID So simple a class ... /t-e.html.   You should check your code, especially the conversion of images to byte[] - maybe ... ();     }     @Entity     static class Image {         byte[] data = new byte[3000000]; // 3MB per image