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AbstractBynaryType (Hibernate API Documentation) - Hibernate 3.2.3 正式版 API 英文文档

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org.hibernate.type
Class AbstractBynaryType

java.lang.Object
  org.hibernate.type.AbstractType
      org.hibernate.type.NullableType
          org.hibernate.type.MutableType
              org.hibernate.type.AbstractBynaryType

All Implemented Interfaces:

Comparator, Serializable, Type, VersionType

Direct Known Subclasses:

BinaryType, WrapperBinaryType

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public abstract class AbstractBynaryType

extends MutableType

implements VersionType, Comparator

Logic to bind stream of byte into a VARBINARY

Author:

Gavin King, Emmanuel Bernard

See Also:

Serialized Form

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Constructor Summary

AbstractBynaryType()

 

Method Summary
int	compare(Object o1, Object o2)
int	compare(Object x, Object y, EntityMode entityMode)           compare two instances of the type
Object	deepCopyNotNull(Object value)
Object	fromStringValue(String xml)
Object	get(ResultSet rs, String name)           Get a column value from a result set, without worrying about the possibility of null values.
Comparator	getComparator()           Get a comparator for version values.
int	getHashCode(Object x, EntityMode entityMode)           Get a hashcode, consistent with persistence "equality"
abstract  String	getName()           Returns the abbreviated name of the type.
boolean	isEqual(Object x, Object y)           Are the two version values considered equal?
Object	next(Object current, SessionImplementor session)           Increment the version.
Object	seed(SessionImplementor session)           Generate an initial version.
void	set(PreparedStatement st, Object value, int index)           Set a parameter value without worrying about the possibility of null values.
int	sqlType()           A convenience form of NullableType.sqlTypes(org.hibernate.engine.Mapping), returning just a single type value since these are explicitly dealing with single column mappings.
protected abstract  Object	toExternalFormat(byte[] bytes)           Convert the byte[] into the expected object type
protected abstract  byte[]	toInternalFormat(Object bytes)           Convert the object into the internal byte[] representation
String	toString(Object val)

 

Methods inherited from class org.hibernate.type.MutableType

deepCopy, isMutable, replace

 

Methods inherited from class org.hibernate.type.NullableType

fromXMLNode, fromXMLString, getColumnSpan, isDirty, isEqual, nullSafeGet, nullSafeGet, nullSafeGet, nullSafeGet, nullSafeSet, nullSafeSet, nullSafeSet, nullSafeToString, setToXMLNode, sqlTypes, toColumnNullness, toLoggableString, toXMLString

 

Methods inherited from class org.hibernate.type.AbstractType

assemble, beforeAssemble, disassemble, getHashCode, getSemiResolvedType, hydrate, isAnyType, isAssociationType, isCollectionType, isComponentType, isDirty, isEntityType, isEqual, isModified, isSame, isXMLElement, replace, replaceNode, resolve, semiResolve

 

Methods inherited from class java.lang.Object

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

 

Methods inherited from interface org.hibernate.type.Type

assemble, beforeAssemble, deepCopy, disassemble, fromXMLNode, getColumnSpan, getHashCode, getReturnedClass, getSemiResolvedType, hydrate, isAnyType, isAssociationType, isCollectionType, isComponentType, isDirty, isDirty, isEntityType, isEqual, isEqual, isModified, isMutable, isSame, isXMLElement, nullSafeGet, nullSafeGet, nullSafeSet, nullSafeSet, replace, replace, resolve, semiResolve, setToXMLNode, sqlTypes, toColumnNullness, toLoggableString

 

Methods inherited from interface java.util.Comparator

equals

 

Constructor Detail

AbstractBynaryType

public AbstractBynaryType()

Method Detail

toExternalFormat

protected abstract Object toExternalFormat(byte[] bytes)

Convert the byte[] into the expected object type

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toInternalFormat

protected abstract byte[] toInternalFormat(Object bytes)

Convert the object into the internal byte[] representation

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set

public void set(PreparedStatement st,
                Object value,
                int index)
         throws HibernateException,
                SQLException

Description copied from class: NullableType

Set a parameter value without worrying about the possibility of null values. Called from NullableType.nullSafeSet(java.sql.PreparedStatement, java.lang.Object, int, boolean[], org.hibernate.engine.SessionImplementor) after nullness checks have been performed.

Specified by:

set in class NullableType

Parameters:

st - The statement into which to bind the parameter value.

value - The parameter value to bind.

index - The position or index at which to bind the param value.

Throws:

HibernateException - Generally some form of mismatch error.

SQLException - Indicates problem making the JDBC call(s).

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get

public Object get(ResultSet rs,
                  String name)
           throws HibernateException,
                  SQLException

Description copied from class: NullableType

Get a column value from a result set, without worrying about the possibility of null values. Called from NullableType.nullSafeGet(java.sql.ResultSet, java.lang.String[], org.hibernate.engine.SessionImplementor, java.lang.Object) after nullness checks have been performed.

Specified by:

get in class NullableType

Parameters:

rs - The result set from which to extract the value.

name - The name of the value to extract.

Returns:

The extracted value.

Throws:

HibernateException - Generally some form of mismatch error.

SQLException - Indicates problem making the JDBC call(s).

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sqlType

public int sqlType()

Description copied from class: NullableType

A convenience form of NullableType.sqlTypes(org.hibernate.engine.Mapping), returning just a single type value since these are explicitly dealing with single column mappings.

Specified by:

sqlType in class NullableType

Returns:

The Types mapping value.

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seed

public Object seed(SessionImplementor session)

Description copied from interface: VersionType

Generate an initial version.

Specified by:

seed in interface VersionType

Parameters:

session - The session from which this request originates.

Returns:

an instance of the type

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next

public Object next(Object current,
                   SessionImplementor session)

Description copied from interface: VersionType

Increment the version.

Specified by:

next in interface VersionType

Parameters:

session - The session from which this request originates.

current - the current version

Returns:

an instance of the type

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getComparator

public Comparator getComparator()

Description copied from interface: VersionType

Get a comparator for version values.

Specified by:

getComparator in interface VersionType

Returns:

The comparator to use to compare different version values.

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compare

public int compare(Object o1,
                   Object o2)

Specified by:

compare in interface Comparator

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isEqual

public boolean isEqual(Object x,
                       Object y)

Description copied from interface: VersionType

Are the two version values considered equal?

Specified by:

isEqual in interface VersionType

Overrides:

isEqual in class NullableType

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getHashCode

public int getHashCode(Object x,
                       EntityMode entityMode)

Description copied from interface: Type

Get a hashcode, consistent with persistence "equality"

Specified by:

getHashCode in interface Type

Overrides:

getHashCode in class AbstractType

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compare

public int compare(Object x,
                   Object y,
                   EntityMode entityMode)

Description copied from interface: Type

compare two instances of the type

Specified by:

compare in interface Type

Overrides:

compare in class AbstractType

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getName

public abstract String getName()

Description copied from interface: Type

Returns the abbreviated name of the type.

Specified by:

getName in interface Type

Returns:

String the Hibernate type name

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toString

public String toString(Object val)

Specified by:

toString in class NullableType

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deepCopyNotNull

public Object deepCopyNotNull(Object value)

Specified by:

deepCopyNotNull in class MutableType

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fromStringValue

public Object fromStringValue(String xml)
                       throws HibernateException

Specified by:

fromStringValue in class NullableType

Throws:

HibernateException

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