org.exolab.castor.jdo.engine

Class JDOMappingLoader

java.lang.Object

org.exolab.castor.mapping.loader.AbstractMappingLoader2

org.exolab.castor.mapping.loader.AbstractMappingLoader

org.exolab.castor.jdo.engine.JDOMappingLoader

All Implemented Interfaces:

MappingLoader

public final class JDOMappingLoader
extends AbstractMappingLoader

A JDO implementation of mapping helper. Creates JDO class descriptors from the mapping file.

Version:

$Revision: 6305 $ $Date: 2006-04-13 07:37:49 -0600 (Thu, 13 Apr 2006) $

Author:

Assaf Arkin

Nested Class Summary

Nested classes/interfaces inherited from class org.exolab.castor.mapping.loader.AbstractMappingLoader

AbstractMappingLoader.TypeInfoReference

Field Summary

Fields inherited from class org.exolab.castor.mapping.loader.AbstractMappingLoader

EMPTY_ARGS, NO_DESCRIPTOR, STRING_ARG, VALUE_OF

Constructor Summary

Constructors

Constructor and Description
JDOMappingLoader(java.lang.ClassLoader loader)

Method Summary

Modifier and Type	Method and Description
protected ClassDescriptor	createDescriptor(ClassMapping clsMap) Creates a new descriptor.
protected FieldDescriptor	createFieldDesc(java.lang.Class javaClass, FieldMapping fieldMap) Creates a single field descriptor.
static java.lang.String	definition2param(java.lang.String sqlTypeDef) Extracts parameter for type convertor from the SQL type definition of the form "SQL_TYPE_NAME[PARAMETER]".
static java.lang.String	definition2type(java.lang.String sqlTypeDef) Extracts SQL type name from the the SQL type definition of the form "SQL_TYPE_NAME[PARAMETER]".
BindingType	getBindingType()
protected java.lang.String[]	getSqlTypes(FieldMapping fieldMap) Parse the sql type attribute to build an array of types, needed to support whitespace inside parameterized types (see Bug 1045)
protected TypeInfo	getTypeInfo(java.lang.Class fieldType, CollectionHandler colHandler, FieldMapping fieldMap)
protected void	loadMappingInternal(MappingRoot mapping, java.lang.Object param) Loads the mapping from the specified mapping object.

Methods inherited from class org.exolab.castor.mapping.loader.AbstractMappingLoader

createFieldHandler, findAccessor, getIdentityColumnNames, getSourceType, isPrimitive, resolveRelations, resolveType

Methods inherited from class org.exolab.castor.mapping.loader.AbstractMappingLoader2

addDescriptor, clear, descriptorIterator, getClassLoader, getDescriptor, isAllowRedefinition, loadMapping, setAllowRedefinitions, setClassLoader

Methods inherited from class java.lang.Object

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

Constructor Detail

JDOMappingLoader

public JDOMappingLoader(java.lang.ClassLoader loader)

Method Detail

definition2param

public static java.lang.String definition2param(java.lang.String sqlTypeDef)

Extracts parameter for type convertor from the SQL type definition of the form "SQL_TYPE_NAME[PARAMETER]". If the type is not parameterized, returns null.

Parameters:

sqlTypeDef - SQL type definition (e.g. char[01]).

Returns:

Parameter (e.g. "01") or null if not parameterized.

definition2type

public static java.lang.String definition2type(java.lang.String sqlTypeDef)

Extracts SQL type name from the the SQL type definition of the form "SQL_TYPE_NAME[PARAMETER]".

Parameters:

sqlTypeDef - SQL type definition (e.g. char[01]).

Returns:

SQL type name (e.g. "char").

getBindingType

public BindingType getBindingType()

createDescriptor

protected ClassDescriptor createDescriptor(ClassMapping clsMap)
                                    throws MappingException

Description copied from class: AbstractMappingLoader

Creates a new descriptor. The class mapping information is used to create a new stock ClassDescriptor. Implementations may extend this class to create a more suitable descriptor.

Overrides:

createDescriptor in class AbstractMappingLoader

Parameters:

clsMap - The class mapping information.

Throws:

MappingException - An exception indicating why mapping for the class cannot be created.

getSqlTypes

protected java.lang.String[] getSqlTypes(FieldMapping fieldMap)

Parse the sql type attribute to build an array of types, needed to support whitespace inside parameterized types (see Bug 1045)

getTypeInfo

protected TypeInfo getTypeInfo(java.lang.Class fieldType,
                               CollectionHandler colHandler,
                               FieldMapping fieldMap)
                        throws MappingException

Overrides:

getTypeInfo in class AbstractMappingLoader

Throws:

MappingException

createFieldDesc

protected FieldDescriptor createFieldDesc(java.lang.Class javaClass,
                                          FieldMapping fieldMap)
                                   throws MappingException

Description copied from class: AbstractMappingLoader

Creates a single field descriptor. The field mapping is used to create a new stock FieldDescriptor. Implementations may extend this class to create a more suitable descriptor.

Overrides:

createFieldDesc in class AbstractMappingLoader

Parameters:

javaClass - The class to which the field belongs.

fieldMap - The field mapping information.

Returns:

The field descriptor.

Throws:

MappingException - The field or its accessor methods are not found, not accessible, not of the specified type, etc.

loadMappingInternal

protected void loadMappingInternal(MappingRoot mapping,
                                   java.lang.Object param)
                            throws MappingException

Description copied from class: AbstractMappingLoader

Loads the mapping from the specified mapping object. Calls #createDescriptor to create each descriptor and AbstractMappingLoader2.addDescriptor(org.exolab.castor.mapping.ClassDescriptor) to store it. Also loads all the included mapping files.

Overrides:

loadMappingInternal in class AbstractMappingLoader

Parameters:

mapping - The mapping information.

param - Arbitrary parameter that can be used by subclasses.

Throws:

MappingException - The mapping file is invalid.