com.db4o.internal

Class Platform4

java.lang.Object

com.db4o.internal.Platform4

public final class Platform4
extends java.lang.Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Platform4.JDKFactoryInstantiationException

Constructor Summary

Constructors

Constructor and Description
Platform4()

Method Summary

Methods

Modifier and Type	Method and Description
static boolean	callConstructor()
static boolean	canSetAccessible()
static java.lang.Object[]	collectionToArray(ObjectContainerBase stream, java.lang.Object obj) may be needed for YapConfig processID() at a later date
static java.lang.Object	createActiveObjectReference(java.lang.Object referenceQueue, java.lang.Object objectReference, java.lang.Object obj)
static java.lang.Object	createReferenceQueue()
static java.lang.Object	createWeakReference(java.lang.Object obj)
static java.lang.Object	deserialize(byte[] bytes)
static long	doubleToLong(double a_double)
static QConEvaluation	evaluationCreate(Transaction a_trans, java.lang.Object example)
static void	evaluationEvaluate(java.lang.Object a_evaluation, Candidate a_candidate)
static Config4Class	extendConfiguration(ReflectClass clazz, Configuration config, Config4Class classConfig) Should create additional configuration, for example through reflection on annotations.
static void	forEachCollectionElement(java.lang.Object obj, Visitor4 visitor)
static java.lang.String	format(java.util.Date date, boolean showTime)
static void	getDefaultConfiguration(Config4Impl config)
static java.lang.Object	getTypeForClass(java.lang.Object obj)
static boolean	hasWeakReferences()
static boolean	isConnected(java.net.Socket socket)
static boolean	isEnum(Reflector reflector, ReflectClass claxx)
static boolean	isJavaEnum(GenericReflector reflector, ReflectClass classReflector)
static boolean	isSimple(java.lang.Class clazz)
static boolean	isStruct(ReflectClass claxx) Returns true if claxx represents a .net struct (a value type with members in the type handler jargon).
static boolean	isTransient(ReflectClass claxx)
static JDK	jdk()
static void	link()
static void	lockFile(java.lang.String path, java.lang.Object file)
static double	longToDouble(long a_long)
static boolean	needsLockFileThread()
static java.util.Date	now()
static java.lang.Class	nullableTypeFor(java.lang.Class primitiveJavaClass)
static java.lang.Object	nullValue(java.lang.Class clazz)
static void	pollReferenceQueue(java.lang.Object a_stream, java.lang.Object a_referenceQueue)
static java.lang.Class[]	primitiveTypes()
static Reflector	reflectorForType(java.lang.Class clazz)
static void	registerCollections(GenericReflector reflector)
static void	registerPlatformHandlers(ObjectContainerBase container)
static byte[]	serialize(java.lang.Object obj)
static void	setAccessible(java.lang.Object a_accessible)
static boolean	storeStaticFieldValues(Reflector reflector, ReflectClass claxx)
static void	throwUncheckedException(java.lang.Throwable origExc)
static byte	toSByte(byte b)
static void	unlockFile(java.lang.String path, java.lang.Object file)
static byte[]	updateClassName(byte[] bytes)
static boolean	useNativeSerialization()
static java.lang.Object	weakReferenceTarget(java.lang.Object weakRef)
static java.lang.Object	wrapEvaluation(java.lang.Object evaluation)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Platform4

public Platform4()

Method Detail

canSetAccessible

public static final boolean canSetAccessible()

createReferenceQueue

public static final java.lang.Object createReferenceQueue()

createWeakReference

public static java.lang.Object createWeakReference(java.lang.Object obj)

createActiveObjectReference

public static final java.lang.Object createActiveObjectReference(java.lang.Object referenceQueue,
                                           java.lang.Object objectReference,
                                           java.lang.Object obj)

deserialize

public static java.lang.Object deserialize(byte[] bytes)

doubleToLong

public static final long doubleToLong(double a_double)

evaluationCreate

public static final QConEvaluation evaluationCreate(Transaction a_trans,
                              java.lang.Object example)

evaluationEvaluate

public static final void evaluationEvaluate(java.lang.Object a_evaluation,
                      Candidate a_candidate)

collectionToArray

public static java.lang.Object[] collectionToArray(ObjectContainerBase stream,
                                   java.lang.Object obj)

may be needed for YapConfig processID() at a later date

extendConfiguration

public static Config4Class extendConfiguration(ReflectClass clazz,
                               Configuration config,
                               Config4Class classConfig)

Should create additional configuration, for example through reflection on annotations. - If a valid configuration is passed as classConfig, any additional configuration, if available, should be applied to this object, and this object should be returned. - If classConfig is null and there is no additional configuration, null should be returned. - If classConfig is null and there is additional configuration, this code should create and register a new configuration via config.objectClass(), apply additional configuration there and return this new instance. The reason for this dispatch is to avoid creation of a configuration for a class that doesn't need configuration at all.

Parameters:

clazz - The class to be searched for additional configuration information

config - The global database configuration

classConfig - A class configuration, if one already exists

Returns:

classConfig, if not null, a newly created ObjectClass otherwise.

forEachCollectionElement

public static final void forEachCollectionElement(java.lang.Object obj,
                            Visitor4 visitor)

format

public static final java.lang.String format(java.util.Date date,
                      boolean showTime)

getDefaultConfiguration

public static final void getDefaultConfiguration(Config4Impl config)

getTypeForClass

public static java.lang.Object getTypeForClass(java.lang.Object obj)

needsLockFileThread

public static boolean needsLockFileThread()

hasWeakReferences

public static final boolean hasWeakReferences()

isConnected

public static boolean isConnected(java.net.Socket socket)

isStruct

public static final boolean isStruct(ReflectClass claxx)

Returns true if claxx represents a .net struct (a value type with members in the type handler jargon).

Parameters:

claxx -

jdk

public static JDK jdk()

isSimple

public static boolean isSimple(java.lang.Class clazz)

link

public static void link()

lockFile

public static final void lockFile(java.lang.String path,
            java.lang.Object file)

unlockFile

public static final void unlockFile(java.lang.String path,
              java.lang.Object file)

longToDouble

public static final double longToDouble(long a_long)

callConstructor

public static boolean callConstructor()

pollReferenceQueue

public static final void pollReferenceQueue(java.lang.Object a_stream,
                      java.lang.Object a_referenceQueue)

registerCollections

public static void registerCollections(GenericReflector reflector)

serialize

public static final byte[] serialize(java.lang.Object obj)
                              throws java.lang.Exception

Throws:

java.lang.Exception

setAccessible

public static final void setAccessible(java.lang.Object a_accessible)

storeStaticFieldValues

public static boolean storeStaticFieldValues(Reflector reflector,
                             ReflectClass claxx)

isEnum

public static boolean isEnum(Reflector reflector,
             ReflectClass claxx)

isJavaEnum

public static boolean isJavaEnum(GenericReflector reflector,
                 ReflectClass classReflector)

updateClassName

public static byte[] updateClassName(byte[] bytes)

weakReferenceTarget

public static java.lang.Object weakReferenceTarget(java.lang.Object weakRef)

wrapEvaluation

public static java.lang.Object wrapEvaluation(java.lang.Object evaluation)

isTransient

public static boolean isTransient(ReflectClass claxx)

Parameters:

claxx -

reflectorForType

public static Reflector reflectorForType(java.lang.Class clazz)

now

public static java.util.Date now()

useNativeSerialization

public static boolean useNativeSerialization()

registerPlatformHandlers

public static void registerPlatformHandlers(ObjectContainerBase container)

nullableTypeFor

public static java.lang.Class nullableTypeFor(java.lang.Class primitiveJavaClass)

nullValue

public static java.lang.Object nullValue(java.lang.Class clazz)

primitiveTypes

public static java.lang.Class[] primitiveTypes()

throwUncheckedException

public static void throwUncheckedException(java.lang.Throwable origExc)

toSByte

public static final byte toSByte(byte b)