org.hibernate.type
Class NullableType

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

All Implemented Interfaces:

Serializable, Type

Direct Known Subclasses:

ImmutableType, MutableType

public abstract class NullableType

extends AbstractType

Superclass of single-column nullable types.

Author:

Gavin King

See Also:

Serialized Form

Constructor Summary

NullableType()

Method Summary

abstract Object	fromStringValue(String xml)
Object	fromXMLNode(org.dom4j.Node xml, Mapping factory) Parse the XML representation of an instance.
Object	fromXMLString(String xml, Mapping factory)
abstract Object	get(ResultSet rs, String name) Get a column value from a result set, without worrying about the possibility of null values
int	getColumnSpan(Mapping session) How many columns are used to persist this type.
boolean	isDirty(Object old, Object current, boolean[] checkable, SessionImplementor session) Should the parent be considered dirty, given both the old and current field or element value?
boolean	isEqual(Object x, Object y)
boolean	isEqual(Object x, Object y, EntityMode entityMode) Compare two instances of the class mapped by this type for persistence "equality" - equality of persistent state.
Object	nullSafeGet(ResultSet rs, String name)
Object	nullSafeGet(ResultSet rs, String[] names)
Object	nullSafeGet(ResultSet rs, String[] names, SessionImplementor session, Object owner) Retrieve an instance of the mapped class from a JDBC resultset.
Object	nullSafeGet(ResultSet rs, String name, SessionImplementor session, Object owner) Retrieve an instance of the mapped class from a JDBC resultset.
void	nullSafeSet(PreparedStatement st, Object value, int index)
void	nullSafeSet(PreparedStatement st, Object value, int index, boolean[] settable, SessionImplementor session) Write an instance of the mapped class to a prepared statement, ignoring some columns.
void	nullSafeSet(PreparedStatement st, Object value, int index, SessionImplementor session) Write an instance of the mapped class to a prepared statement.
abstract void	set(PreparedStatement st, Object value, int index) Get a parameter value without worrying about the possibility of null values
void	setToXMLNode(org.dom4j.Node xml, Object value, SessionFactoryImplementor factory) A representation of the value to be embedded in an XML element.
abstract int	sqlType()
int[]	sqlTypes(Mapping session) Return the SQL type codes for the columns mapped by this type.
boolean[]	toColumnNullness(Object value, Mapping mapping) Given an instance of the type, return an array of boolean, indicating which mapped columns would be null.
String	toLoggableString(Object value, SessionFactoryImplementor factory) A representation of the value to be embedded in a log file.
abstract String	toString(Object value)
String	toXMLString(Object value, SessionFactoryImplementor pc)

Methods inherited from class org.hibernate.type.AbstractType

assemble, beforeAssemble, compare, disassemble, getHashCode, 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

deepCopy, getName, getReturnedClass, isMutable, replace

Constructor Detail

NullableType

public NullableType()

Method Detail

get

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

Get a column value from a result set, without worrying about the possibility of null values

Throws:

HibernateException

SQLException

set

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

Get a parameter value without worrying about the possibility of null values

Throws:

HibernateException

SQLException

sqlType

public abstract int sqlType()

toString

public abstract String toString(Object value)
                         throws HibernateException

Throws:

HibernateException

fromStringValue

public abstract Object fromStringValue(String xml)
                                throws HibernateException

Throws:

HibernateException

nullSafeSet

public final void nullSafeSet(PreparedStatement st,
                              Object value,
                              int index,
                              boolean[] settable,
                              SessionImplementor session)
                       throws HibernateException,
                              SQLException

Description copied from interface: Type

Write an instance of the mapped class to a prepared statement, ignoring some columns. Implementors should handle possibility of null values. A multi-column type should be written to parameters starting from index.

Parameters:

st -

value - the object to write

index - statement parameter index

settable - an array indicating which columns to ignore

session -

Throws:

SQLException

HibernateException

nullSafeSet

public final void nullSafeSet(PreparedStatement st,
                              Object value,
                              int index,
                              SessionImplementor session)
                       throws HibernateException,
                              SQLException

Description copied from interface: Type

Write an instance of the mapped class to a prepared statement. Implementors should handle possibility of null values. A multi-column type should be written to parameters starting from index.

Parameters:

st -

value - the object to write

index - statement parameter index

session -

Throws:

HibernateException

SQLException

nullSafeSet

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

Throws:

HibernateException

SQLException

nullSafeGet

public final Object nullSafeGet(ResultSet rs,
                                String[] names,
                                SessionImplementor session,
                                Object owner)
                         throws HibernateException,
                                SQLException

Description copied from interface: Type

Retrieve an instance of the mapped class from a JDBC resultset. Implementors should handle possibility of null values.

Parameters:

rs -

names - the column names

session -

owner - the parent entity

Returns:

Object

Throws:

HibernateException

SQLException

See Also:

alternative, 2-phase property initialization

nullSafeGet

public final Object nullSafeGet(ResultSet rs,
                                String[] names)
                         throws HibernateException,
                                SQLException

Throws:

HibernateException

SQLException

nullSafeGet

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

Throws:

HibernateException

SQLException

nullSafeGet

public final Object nullSafeGet(ResultSet rs,
                                String name,
                                SessionImplementor session,
                                Object owner)
                         throws HibernateException,
                                SQLException

Description copied from interface: Type

Retrieve an instance of the mapped class from a JDBC resultset. Implementations should handle possibility of null values. This method might be called if the type is known to be a single-column type.

Parameters:

rs -

name - the column name

session -

owner - the parent entity

Returns:

Object

Throws:

SQLException

HibernateException

toXMLString

public final String toXMLString(Object value,
                                SessionFactoryImplementor pc)
                         throws HibernateException

Throws:

HibernateException

fromXMLString

public final Object fromXMLString(String xml,
                                  Mapping factory)
                           throws HibernateException

Throws:

HibernateException

getColumnSpan

public final int getColumnSpan(Mapping session)

Description copied from interface: Type

How many columns are used to persist this type.

sqlTypes

public final int[] sqlTypes(Mapping session)

Description copied from interface: Type

Return the SQL type codes for the columns mapped by this type. The codes are defined on java.sql.Types.

Returns:

the typecodes

See Also:

Types

isEqual

public final boolean isEqual(Object x,
                             Object y,
                             EntityMode entityMode)

Description copied from interface: Type

Compare two instances of the class mapped by this type for persistence "equality" - equality of persistent state.

Specified by:

isEqual in interface Type

Overrides:

isEqual in class AbstractType

isEqual

public boolean isEqual(Object x,
                       Object y)

toLoggableString

public String toLoggableString(Object value,
                               SessionFactoryImplementor factory)

Description copied from interface: Type

A representation of the value to be embedded in a log file.

Parameters:

value -

factory -

Returns:

String

fromXMLNode

public Object fromXMLNode(org.dom4j.Node xml,
                          Mapping factory)
                   throws HibernateException

Description copied from interface: Type

Parse the XML representation of an instance.

Parameters:

xml -

factory -

Returns:

an instance of the type

Throws:

HibernateException

setToXMLNode

public void setToXMLNode(org.dom4j.Node xml,
                         Object value,
                         SessionFactoryImplementor factory)
                  throws HibernateException

Description copied from interface: Type

A representation of the value to be embedded in an XML element.

Parameters:

value -

factory -

Returns:

String

Throws:

HibernateException

toColumnNullness

public boolean[] toColumnNullness(Object value,
                                  Mapping mapping)

Description copied from interface: Type

Given an instance of the type, return an array of boolean, indicating which mapped columns would be null.

Parameters:

value - an instance of the type

isDirty

public boolean isDirty(Object old,
                       Object current,
                       boolean[] checkable,
                       SessionImplementor session)
                throws HibernateException

Description copied from interface: Type

Should the parent be considered dirty, given both the old and current field or element value?

Parameters:

old - the old value

current - the current value

checkable - which columns are actually updatable

session -

Returns:

true if the field is dirty

Throws:

HibernateException