org.datanucleus.store.rdbms.query

Class PersistentClassROF<T>

java.lang.Object

org.datanucleus.store.rdbms.query.AbstractROF<T>

org.datanucleus.store.rdbms.query.PersistentClassROF<T>

Type Parameters:

T - Type of the persistent object that this creates

All Implemented Interfaces:

ResultObjectFactory<T>

public final class PersistentClassROF<T>
extends AbstractROF<T>

Result-object factory that takes a JDBC ResultSet, a results mapping, and creates a persistable object instance for each row in the ResultSet. We use information in the result set to determine the object type; this can be a discriminator column, or can be a special "NucleusType" column defined just for result processing.

Field Summary

Fields

Modifier and Type	Field and Description
protected Class<T>	persistentClass Persistent class that this factory will generate (may be the root class).
protected StatementClassMapping	resultMapping Mapping of the results to members of this class (and sub-objects).
protected ResultSetGetter	resultSetGetter
protected org.datanucleus.metadata.AbstractClassMetaData	rootCmd Metadata for the (root) persistable candidate class.

Fields inherited from class org.datanucleus.store.rdbms.query.AbstractROF

ec, ignoreCache, rs

Constructor Summary

Constructors

Constructor and Description
PersistentClassROF(org.datanucleus.ExecutionContext ec, ResultSet rs, boolean ignoreCache, StatementClassMapping resultMapping, org.datanucleus.metadata.AbstractClassMetaData acmd, Class<T> persistentClass) Constructor.

Method Summary

Modifier and Type	Method and Description
T	getObject() Method to convert the current ResultSet row into a persistable Object.
ResultSet	getResultSet() Accessor for the JDBC ResultSet being processed.

Methods inherited from class java.lang.Object

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

Field Detail

rootCmd

protected final org.datanucleus.metadata.AbstractClassMetaData rootCmd

Metadata for the (root) persistable candidate class.

persistentClass

protected Class<T> persistentClass

Persistent class that this factory will generate (may be the root class).

resultMapping

protected StatementClassMapping resultMapping

Mapping of the results to members of this class (and sub-objects).

resultSetGetter

protected ResultSetGetter resultSetGetter

Constructor Detail

PersistentClassROF

public PersistentClassROF(org.datanucleus.ExecutionContext ec,
                          ResultSet rs,
                          boolean ignoreCache,
                          StatementClassMapping resultMapping,
                          org.datanucleus.metadata.AbstractClassMetaData acmd,
                          Class<T> persistentClass)

Constructor.

Parameters:

ec - ExecutionContext

rs - ResultSet being processed

ignoreCache - Whether to ignore the cache

resultMapping - Mapping information for the result set and how it maps to the class

acmd - MetaData for the (root) candidate class

persistentClass - Class that this factory will create instances of (or subclasses)

Method Detail

getResultSet

public ResultSet getResultSet()

Description copied from interface: ResultObjectFactory

Accessor for the JDBC ResultSet being processed.

Specified by:

getResultSet in interface ResultObjectFactory<T>

Overrides:

getResultSet in class AbstractROF<T>

Returns:

The ResultSet

getObject

public T getObject()

Method to convert the current ResultSet row into a persistable Object.

Returns:

The persistable object.