de.schwarzrot.data.access.jdbc
Class JDBCEntityIntrospector

java.lang.Object
  de.schwarzrot.data.access.support.EntityIntrospector
      de.schwarzrot.data.access.jdbc.JDBCEntityIntrospector

public class JDBCEntityIntrospector
extends EntityIntrospector

class to complete entity introspection for jdbc data storage systems. All unmapped physical names are set to lower case and the PropertyInfo entry is patched with the database model information.

Author:

Reinhard Mantey

Constructor Summary

JDBCEntityIntrospector()

Method Summary

protected String	getMapped(String pn) change all column-names to lower case value of property names
protected void	initForDescriptor(EntityDescriptor ed, Object handle) empty callback for subclasses to extend introspection.
protected void	patchPropertyInfo(PropertyInfo info, EntityDescriptor ed) callback to extend/change introspection.
protected void	setPersistenceInfo(EntityDescriptor ed, String colName, int colType, int colSize, int colDecimals) add database model information to PropertyInfo entry and marks that property as being persistent.
protected void	validate(EntityDescriptor ed, Object handle) empty callback for subclasses to extend introspection.

Methods inherited from class de.schwarzrot.data.access.support.EntityIntrospector

dumpCache, getEntityDescriptor, getLogger

Methods inherited from class java.lang.Object

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

Constructor Detail

JDBCEntityIntrospector

public JDBCEntityIntrospector()

Method Detail

getMapped

protected String getMapped(String pn)

change all column-names to lower case value of property names

Overrides:

getMapped in class EntityIntrospector

Parameters:

pn - the logical property name

Returns:

the properties name for physical data storage

See Also:

EntityIntrospector.getMapped(java.lang.String)

initForDescriptor

protected void initForDescriptor(EntityDescriptor ed,
                                 Object handle)

Description copied from class: EntityIntrospector

empty callback for subclasses to extend introspection. Will be called before walking over all collected PropertyInfo entries.

Overrides:

initForDescriptor in class EntityIntrospector

Parameters:

ed - the freshly created EntityDescriptor

handle - abstraction of an connection handle, in case physical data storage needs to do some extra investigation

patchPropertyInfo

protected void patchPropertyInfo(PropertyInfo info,
                                 EntityDescriptor ed)

Description copied from class: EntityIntrospector

callback to extend/change introspection. Default behaviour is to set all properties, that don't have an entry in skiplist, to being persistent.

Overrides:

patchPropertyInfo in class EntityIntrospector

Parameters:

info - the collected PropertyInfo

ed - the EntityDescriptor holding the PropertyInfo entry

setPersistenceInfo

protected void setPersistenceInfo(EntityDescriptor ed,
                                  String colName,
                                  int colType,
                                  int colSize,
                                  int colDecimals)

add database model information to PropertyInfo entry and marks that property as being persistent.

Parameters:

colName - column name from database

colType - column type from database

colSize - column size from database

colDecimals - number of decimal digits for that column

validate

protected void validate(EntityDescriptor ed,
                        Object handle)

Description copied from class: EntityIntrospector

empty callback for subclasses to extend introspection. Will be called after the loop over all collected PropertyInfo entries.

Overrides:

validate in class EntityIntrospector

Parameters:

ed - the EntityDescriptor to extend

handle - abstraction of an connection handle, in case physical data storage needs to do some extra investigation