kodo.jdbc.meta
Class ClassIndicator

java.lang.Object
  |
  +--kodo.jdbc.meta.Indicator
        |
        +--kodo.jdbc.meta.ClassIndicator

All Implemented Interfaces:

Mapping

Direct Known Subclasses:

ColumnClassIndicator, SubclassJoinClassIndicator

public abstract class ClassIndicator

extends Indicator

Handles determining the object class of database records.

Constructor Summary

ClassIndicator()

Method Summary

abstract Class	getClass(JDBCStoreManager store, Result result) Return the class for the current result row.
abstract SQLBuffer	getClassConditions(JDBCStoreManager store, Select sel, Joins joins, ClassMapping base, boolean subs) Return SQL to limit the classes selected as much as possible to the given base class, and optionally its subclasses.
protected ClassLoader	getClassLoader(JDBCStoreManager store) Return a class loader from the configured class resolver, based on the owner mapping's described type and the given store manager's persistence manager's class loader.
static ClassIndicator[]	getDefaults() Return the set of default class indicators.
void	loadSubclasses(JDBCStoreManager store) Load all subclasses of the owning class mapping into the JVM.
static ClassIndicator	newInstance(String type) Return the indicator for the given indicator name.
void	setSubclassesLoaded(boolean loaded) Set whether subclasses have been loaded.
boolean	subclassesLoaded() Return true if subclasses have been loaded.
String	toString()

Methods inherited from class kodo.jdbc.meta.Indicator

addMappingInfoAttributes, delete, delete, fromMappingInfo, getColumns, getDBDictionary, getMappingRepository, getOwnerMapping, getTable, insert, insert, isCustomDelete, isCustomInsert, isCustomUpdate, refSchemaComponents, reverseMap, select, setOwnerMapping, update, update

Methods inherited from class java.lang.Object

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

Methods inherited from interface kodo.jdbc.meta.Mapping

getMappingType, map, toMappingInfo

Constructor Detail

ClassIndicator

public ClassIndicator()

Method Detail

newInstance

public static ClassIndicator newInstance(String type)

Return the indicator for the given indicator name.

getDefaults

public static ClassIndicator[] getDefaults()

Return the set of default class indicators.

subclassesLoaded

public boolean subclassesLoaded()

Return true if subclasses have been loaded.

setSubclassesLoaded

public void setSubclassesLoaded(boolean loaded)

Set whether subclasses have been loaded.

loadSubclasses

public void loadSubclasses(JDBCStoreManager store)
                    throws SQLException,
                           ClassNotFoundException

Load all subclasses of the owning class mapping into the JVM. By default, this method logs a warning that the kodo.PersistentClasses property wasn't set. Subclasses that are able to actually initialize the subclass list should override this method to do so.

getClass

public abstract Class getClass(JDBCStoreManager store,
                               Result result)
                        throws SQLException,
                               ClassNotFoundException

Return the class for the current result row.

getClassConditions

public abstract SQLBuffer getClassConditions(JDBCStoreManager store,
                                             Select sel,
                                             Joins joins,
                                             ClassMapping base,
                                             boolean subs)

Return SQL to limit the classes selected as much as possible to the given base class, and optionally its subclasses. Return null if no conditions needed. The select and joins instances are supplied in order to get column aliases.

getClassLoader

protected ClassLoader getClassLoader(JDBCStoreManager store)

Return a class loader from the configured class resolver, based on the owner mapping's described type and the given store manager's persistence manager's class loader.

toString

public String toString()

Overrides:

toString in class Object