org.hibernate.type
Class MetaType

java.lang.Object
  extended by org.hibernate.type.AbstractType
      extended by org.hibernate.type.MetaType
All Implemented Interfaces:
Serializable, Type

public class MetaType
extends AbstractType

See Also:
Serialized Form

Field Summary
static String[] REGISTRATION_KEYS
           
 
Fields inherited from class org.hibernate.type.AbstractType
LEGACY_DEFAULT_SIZE, LEGACY_DICTATED_SIZE
 
Constructor Summary
MetaType(Map values, Type baseType)
           
 
Method Summary
 Object deepCopy(Object value, SessionFactoryImplementor factory)
          Return a deep copy of the persistent state, stopping at entities and at collections.
 Size[] defaultSizes(Mapping mapping)
          Defines the column sizes to use according to this type if the user did not explicitly say (and if no Type.dictatedSizes(org.hibernate.engine.spi.Mapping) were given).
 Size[] dictatedSizes(Mapping mapping)
          Return the column sizes dictated by this type.
 Object fromXMLNode(org.dom4j.Node xml, Mapping factory)
          Parse the XML representation of an instance.
 Object fromXMLString(String xml, Mapping factory)
           
 int getColumnSpan(Mapping mapping)
          How many columns are used to persist this type.
 String getName()
          Returns the abbreviated name of the type.
 String[] getRegistrationKeys()
           
 Class getReturnedClass()
          The class returned by Type.nullSafeGet(java.sql.ResultSet, java.lang.String[], org.hibernate.engine.spi.SessionImplementor, java.lang.Object) methods.
 boolean isDirty(Object old, Object current, boolean[] checkable, SessionImplementor session)
          Should the parent be considered dirty, given both the old and current value?
 boolean isMutable()
          Are objects of this type mutable.
 Object nullSafeGet(ResultSet rs, String[] names, SessionImplementor session, Object owner)
          Extract a value of the mapped class from the JDBC result set.
 Object nullSafeGet(ResultSet rs, String name, SessionImplementor session, Object owner)
          Extract a value of the mapped class from the JDBC result set.
 void nullSafeSet(PreparedStatement st, Object value, int index, boolean[] settable, SessionImplementor session)
          Bind a value represented by an instance of the mapped class to the JDBC prepared statement, ignoring some columns as dictated by the 'settable' parameter.
 void nullSafeSet(PreparedStatement st, Object value, int index, SessionImplementor session)
          Bind a value represented by an instance of the mapped class to the JDBC prepared statement.
 Object replace(Object original, Object target, SessionImplementor session, Object owner, Map copyCache)
          During merge, replace the existing (target) value in the entity we are merging to with a new (original) value from the detached entity we are merging.
 void setToXMLNode(org.dom4j.Node node, Object value, SessionFactoryImplementor factory)
          A representation of the value to be embedded in an XML element.
 int[] sqlTypes(Mapping mapping)
          Return the JDBC types codes (per Types) 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)
          Generate a representation of the value for logging purposes.
 String toXMLString(Object value, SessionFactoryImplementor factory)
           
 
Methods inherited from class org.hibernate.type.AbstractType
assemble, beforeAssemble, compare, disassemble, getHashCode, getHashCode, getSemiResolvedType, hydrate, isAnyType, isAssociationType, isCollectionType, isComponentType, isDirty, isEntityType, isEqual, 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
 

Field Detail

REGISTRATION_KEYS

public static final String[] REGISTRATION_KEYS
Constructor Detail

MetaType

public MetaType(Map values,
                Type baseType)
Method Detail

getRegistrationKeys

public String[] getRegistrationKeys()

sqlTypes

public int[] sqlTypes(Mapping mapping)
               throws MappingException
Description copied from interface: Type
Return the JDBC types codes (per Types) for the columns mapped by this type.

NOTE: The number of elements in this array matches the return from Type.getColumnSpan(org.hibernate.engine.spi.Mapping).

Parameters:
mapping - The mapping object :/
Returns:
The JDBC type codes.
Throws:
MappingException - Generally indicates an issue accessing the passed mapping object.

dictatedSizes

public Size[] dictatedSizes(Mapping mapping)
                     throws MappingException
Description copied from interface: Type
Return the column sizes dictated by this type. For example, the mapping for a char/Character would have a dictated length limit of 1; for a string-based UUID would have a size limit of 36; etc.

NOTE: The number of elements in this array matches the return from Type.getColumnSpan(org.hibernate.engine.spi.Mapping).

Parameters:
mapping - The mapping object :/
Returns:
The dictated sizes.
Throws:
MappingException - Generally indicates an issue accessing the passed mapping object.

defaultSizes

public Size[] defaultSizes(Mapping mapping)
                    throws MappingException
Description copied from interface: Type
Defines the column sizes to use according to this type if the user did not explicitly say (and if no Type.dictatedSizes(org.hibernate.engine.spi.Mapping) were given).

NOTE: The number of elements in this array matches the return from Type.getColumnSpan(org.hibernate.engine.spi.Mapping).

Parameters:
mapping - The mapping object :/
Returns:
The default sizes.
Throws:
MappingException - Generally indicates an issue accessing the passed mapping object.

getColumnSpan

public int getColumnSpan(Mapping mapping)
                  throws MappingException
Description copied from interface: Type
How many columns are used to persist this type. Always the same as sqlTypes(mapping).length

Parameters:
mapping - The mapping object :/
Returns:
The number of columns
Throws:
MappingException - Generally indicates an issue accessing the passed mapping object.

getReturnedClass

public Class getReturnedClass()
Description copied from interface: Type
The class returned by Type.nullSafeGet(java.sql.ResultSet, java.lang.String[], org.hibernate.engine.spi.SessionImplementor, java.lang.Object) methods. This is used to establish the class of an array of this type.

Returns:
The java type class handled by this type.

nullSafeGet

public Object nullSafeGet(ResultSet rs,
                          String[] names,
                          SessionImplementor session,
                          Object owner)
                   throws HibernateException,
                          SQLException
Description copied from interface: Type
Extract a value of the mapped class from the JDBC result set. Implementors should handle possibility of null values.

Parameters:
rs - The result set from which to extract value.
names - the column names making up this type value (use to read from result set)
session - The originating session
owner - the parent entity
Returns:
The extracted value
Throws:
HibernateException - An error from Hibernate
SQLException - An error from the JDBC driver
See Also:
alternative, 2-phase property initialization

nullSafeGet

public Object nullSafeGet(ResultSet rs,
                          String name,
                          SessionImplementor session,
                          Object owner)
                   throws HibernateException,
                          SQLException
Description copied from interface: Type
Extract a value of the mapped class from the JDBC result set. Implementors should handle possibility of null values. This form might be called if the type is known to be a single-column type.

Parameters:
rs - The result set from which to extract value.
name - the column name making up this type value (use to read from result set)
session - The originating session
owner - the parent entity
Returns:
The extracted value
Throws:
HibernateException - An error from Hibernate
SQLException - An error from the JDBC driver

nullSafeSet

public void nullSafeSet(PreparedStatement st,
                        Object value,
                        int index,
                        SessionImplementor session)
                 throws HibernateException,
                        SQLException
Description copied from interface: Type
Bind a value represented by an instance of the mapped class to the JDBC prepared statement. Implementors should handle possibility of null values. A multi-column type should bind parameters starting from index.

Parameters:
st - The JDBC prepared statement to which to bind
value - the object to write
index - starting parameter bind index
session - The originating session
Throws:
HibernateException - An error from Hibernate
SQLException - An error from the JDBC driver

nullSafeSet

public void nullSafeSet(PreparedStatement st,
                        Object value,
                        int index,
                        boolean[] settable,
                        SessionImplementor session)
                 throws HibernateException,
                        SQLException
Description copied from interface: Type
Bind a value represented by an instance of the mapped class to the JDBC prepared statement, ignoring some columns as dictated by the 'settable' parameter. Implementors should handle the possibility of null values. A multi-column type should bind parameters starting from index.

Parameters:
st - The JDBC prepared statement to which to bind
value - the object to write
index - starting parameter bind index
settable - an array indicating which columns to bind/ignore
session - The originating session
Throws:
HibernateException - An error from Hibernate
SQLException - An error from the JDBC driver

toLoggableString

public String toLoggableString(Object value,
                               SessionFactoryImplementor factory)
                        throws HibernateException
Description copied from interface: Type
Generate a representation of the value for logging purposes.

Parameters:
value - The value to be logged
factory - The session factory
Returns:
The loggable representation
Throws:
HibernateException - An error from Hibernate

toXMLString

public String toXMLString(Object value,
                          SessionFactoryImplementor factory)
                   throws HibernateException
Throws:
HibernateException

fromXMLString

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

getName

public String getName()
Description copied from interface: Type
Returns the abbreviated name of the type.

Returns:
String the Hibernate type name

deepCopy

public Object deepCopy(Object value,
                       SessionFactoryImplementor factory)
                throws HibernateException
Description copied from interface: Type
Return a deep copy of the persistent state, stopping at entities and at collections.

Parameters:
value - The value to be copied
factory - The session factory
Returns:
The deep copy
Throws:
HibernateException - An error from Hibernate

replace

public Object replace(Object original,
                      Object target,
                      SessionImplementor session,
                      Object owner,
                      Map copyCache)
Description copied from interface: Type
During merge, replace the existing (target) value in the entity we are merging to with a new (original) value from the detached entity we are merging. For immutable objects, or null values, it is safe to simply return the first parameter. For mutable objects, it is safe to return a copy of the first parameter. For objects with component values, it might make sense to recursively replace component values.

Parameters:
original - the value from the detached entity being merged
target - the value in the managed entity
session - The originating session
owner - The owner of the value
copyCache - The cache of already copied/replaced values
Returns:
the value to be merged

isMutable

public boolean isMutable()
Description copied from interface: Type
Are objects of this type mutable. (With respect to the referencing object ... entities and collections are considered immutable because they manage their own internal state.)

Returns:
boolean

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 - The XML node from which to read the value
factory - The session factory
Returns:
an instance of the mapped class
Throws:
HibernateException - An error from Hibernate

setToXMLNode

public void setToXMLNode(org.dom4j.Node node,
                         Object value,
                         SessionFactoryImplementor factory)
                  throws HibernateException
Description copied from interface: Type
A representation of the value to be embedded in an XML element.

Parameters:
node - The XML node to which to write the value
value - The value to write
factory - The session factory
Throws:
HibernateException - An error from Hibernate

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
mapping - The mapping abstraction
Returns:
array indicating column nullness for a value instance

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 value?

Parameters:
old - the old value
current - the current value
checkable - An array of booleans indicating which columns making up the value are actually checkable
session - The session from which the request originated.
Returns:
true if the field is dirty
Throws:
HibernateException - A problem occurred performing the checking


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