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TimestampType (Hibernate API Documentation) - Hibernate 3.2.4 正式版 API 英文文档

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org.hibernate.type
Class TimestampType

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

All Implemented Interfaces:

LiteralType, Serializable, Type, VersionType

Direct Known Subclasses:

DbTimestampType

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public class TimestampType

extends MutableType

implements VersionType, LiteralType

timestamp: A type that maps an SQL TIMESTAMP to a Java java.util.Date or java.sql.Timestamp.

Author:

Gavin King

See Also:

Serialized Form

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Constructor Summary

TimestampType()

 

Method Summary
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"
String	getName()           Returns the abbreviated name of the type.
Class	getReturnedClass()           The class returned by nullSafeGet() methods.
boolean	isEqual(Object x, Object y)           Are the two version values considered equal?
Object	next(Object current, SessionImplementor session)           Increment the version.
String	objectToSQLString(Object value, Dialect dialect)           String representation of the value, suitable for embedding in an SQL statement.
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.
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, compare, 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, compare, deepCopy, disassemble, fromXMLNode, getColumnSpan, getHashCode, 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

 

Constructor Detail

TimestampType

public TimestampType()

Method Detail

get

public Object get(ResultSet rs,
                  String name)
           throws 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:

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

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getReturnedClass

public Class getReturnedClass()

Description copied from interface: Type

The class returned by nullSafeGet() methods. This is used to establish the class of an array of this type.

Specified by:

getReturnedClass in interface Type

Returns:

Class

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set

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

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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getName

public 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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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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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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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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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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objectToSQLString

public String objectToSQLString(Object value,
                                Dialect dialect)
                         throws Exception

Description copied from interface: LiteralType

String representation of the value, suitable for embedding in an SQL statement.

Specified by:

objectToSQLString in interface LiteralType

Parameters:

value -

dialect -

Returns:

String the value, as it appears in a SQL query

Throws:

Exception

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fromStringValue

public Object fromStringValue(String xml)
                       throws HibernateException

Specified by:

fromStringValue in class NullableType

Throws:

HibernateException

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