com.jniwrapper

Class DataBufferFactory

java.lang.Object

com.jniwrapper.DataBufferFactory

public abstract class DataBufferFactory
extends java.lang.Object

Abstract base for factory classes that produce instances of appropriate DataBuffer implementation. The class also implements Singleton pattern and performs initialization of factory instance of a required class depending on the JRE version and settings.

See Also:

PROPERTY_UNSAFE

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	PROPERTY_SAFEMEM If this system property is set, JNIWrapper will perform all native memory accesses using fail-safe native methods that throw java exceptions instead of crashing the JVM on illegal memory accesses.
static java.lang.String	PROPERTY_UNSAFE If this system property is defined, JNIWrapper will try to access native memory using the sun.misc.Unsafe class, which usually results in better performance.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	DataBufferFactory()

Method Summary

Modifier and Type	Method and Description
abstract MemoryBuffer	allocateMemoryBuffer(int length)
abstract MemoryBuffer	allocateParameterBuffer(int length)
abstract DataBuffer	createArrayBuffer(byte[] data)
abstract MemoryBuffer	createExternMemoryBuffer(long handle, int length)
abstract MemoryBuffer	createExternPrarameterBuffer(long handle, int length)
abstract DataBuffer	createParameterBuffer(byte[] data)
static DataBufferFactory	getInstance()

Methods inherited from class java.lang.Object

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

Field Detail

PROPERTY_UNSAFE

public static final java.lang.String PROPERTY_UNSAFE

If this system property is defined, JNIWrapper will try to access native memory using the sun.misc.Unsafe class, which usually results in better performance.

See Also:

Constant Field Values

PROPERTY_SAFEMEM

public static final java.lang.String PROPERTY_SAFEMEM

If this system property is set, JNIWrapper will perform all native memory accesses using fail-safe native methods that throw java exceptions instead of crashing the JVM on illegal memory accesses.

See Also:

Constant Field Values

Constructor Detail

DataBufferFactory

protected DataBufferFactory()

Method Detail

getInstance

public static DataBufferFactory getInstance()

createArrayBuffer

public abstract DataBuffer createArrayBuffer(byte[] data)

createParameterBuffer

public abstract DataBuffer createParameterBuffer(byte[] data)

allocateMemoryBuffer

public abstract MemoryBuffer allocateMemoryBuffer(int length)

allocateParameterBuffer

public abstract MemoryBuffer allocateParameterBuffer(int length)

createExternMemoryBuffer

public abstract MemoryBuffer createExternMemoryBuffer(long handle,
                                                      int length)

createExternPrarameterBuffer

public abstract MemoryBuffer createExternPrarameterBuffer(long handle,
                                                          int length)