程序包 org.hibernate.type.descriptor.java

类 RowVersionTypeDescriptor

java.lang.Object

org.hibernate.type.descriptor.java.AbstractTypeDescriptor<byte[]>

org.hibernate.type.descriptor.java.RowVersionTypeDescriptor

所有已实现的接口:

Serializable, BasicJavaDescriptor<byte[]>, JavaTypeDescriptor<byte[]>

public class RowVersionTypeDescriptor
extends AbstractTypeDescriptor<byte[]>

Descriptor for byte[] handling specifically used for specifically for entity versions/timestamps.

作者:

Steve Ebersole, Gail Badner

另请参阅:

序列化表格

字段概要

字段

修饰符和类型	字段	说明
static RowVersionTypeDescriptor	INSTANCE

构造器概要

构造器

构造器	说明
RowVersionTypeDescriptor()

方法概要

修饰符和类型	方法	说明
boolean	areEqual(byte[] one, byte[] another)	Determine if two instances are equal
int	extractHashCode(byte[] bytes)	Extract a proper hash code for this value.
String	extractLoggableRepresentation(byte[] value)	Extract a loggable representation of the value.
byte[]	fromString(String string)
Comparator<byte[]>	getComparator()	Retrieve the natural comparator for this type.
String	toString(byte[] bytes)
<X> X	unwrap(byte[] value, Class<X> type, WrapperOptions options)	Unwrap an instance of our handled Java type into the requested type.
<X> byte[]	wrap(X value, WrapperOptions options)	Wrap a value as our handled Java type.

从类继承的方法 org.hibernate.type.descriptor.java.AbstractTypeDescriptor

getJavaType, getJavaTypeClass, getMutabilityPlan, unknownUnwrap, unknownWrap

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.hibernate.type.descriptor.java.BasicJavaDescriptor

getJdbcRecommendedSqlType

字段详细资料

INSTANCE

public static final RowVersionTypeDescriptor INSTANCE

构造器详细资料

RowVersionTypeDescriptor

public RowVersionTypeDescriptor()

方法详细资料

areEqual

public boolean areEqual(byte[] one,
                        byte[] another)

从接口复制的说明: JavaTypeDescriptor

Determine if two instances are equal

指定者:

areEqual 在接口中 JavaTypeDescriptor<byte[]>

覆盖:

areEqual 在类中 AbstractTypeDescriptor<byte[]>

参数:

one - One instance

another - The other instance

返回:

True if the two are considered equal; false otherwise.

extractHashCode

public int extractHashCode(byte[] bytes)

从接口复制的说明: JavaTypeDescriptor

Extract a proper hash code for this value.

指定者:

extractHashCode 在接口中 JavaTypeDescriptor<byte[]>

覆盖:

extractHashCode 在类中 AbstractTypeDescriptor<byte[]>

参数:

bytes - The value for which to extract a hash code.

返回:

The extracted hash code.

toString

public String toString(byte[] bytes)

extractLoggableRepresentation

public String extractLoggableRepresentation(byte[] value)

从接口复制的说明: JavaTypeDescriptor

Extract a loggable representation of the value.

指定者:

extractLoggableRepresentation 在接口中 JavaTypeDescriptor<byte[]>

覆盖:

extractLoggableRepresentation 在类中 AbstractTypeDescriptor<byte[]>

参数:

value - The value for which to extract a loggable representation.

返回:

The loggable representation

fromString

public byte[] fromString(String string)

getComparator

public Comparator<byte[]> getComparator()

从接口复制的说明: JavaTypeDescriptor

Retrieve the natural comparator for this type.

指定者:

getComparator 在接口中 JavaTypeDescriptor<byte[]>

覆盖:

getComparator 在类中 AbstractTypeDescriptor<byte[]>

unwrap

public <X> X unwrap(byte[] value,
                    Class<X> type,
                    WrapperOptions options)

从接口复制的说明: JavaTypeDescriptor

Unwrap an instance of our handled Java type into the requested type.

As an example, if this is a JavaTypeDescriptor<Integer> and we are asked to unwrap the Integer value as a Long we would return something like Long.valueOf( value.longValue() ).

Intended use is during PreparedStatement binding.

类型参数:

X - The conversion type.

参数:

value - The value to unwrap

type - The type as which to unwrap

options - The options

返回:

The unwrapped value.

wrap

public <X> byte[] wrap(X value,
                       WrapperOptions options)

从接口复制的说明: JavaTypeDescriptor

Wrap a value as our handled Java type.

Intended use is during ResultSet extraction.

类型参数:

X - The conversion type.

参数:

value - The value to wrap.

options - The options

返回:

The wrapped value.