org.tentackle.model.impl

Class ModelImpl

java.lang.Object

org.tentackle.model.impl.ModelImpl

All Implemented Interfaces:

Model

@Service(value=Model.class)
public class ModelImpl
extends Object
implements Model

Model implementation.

Author:

harald

Constructor Summary

Constructors

Constructor and Description
ModelImpl() Creates a model.

Method Summary

Modifier and Type	Method and Description
void	clearModel() Clears the model.
protected EntityFactory	createEntityFactory() Creates the entity factory for this model. The method is invoked once from within the Model constructor.
protected Reader	createFileReader(String fileName) Creates a reader for given filename.
Collection<Entity>	getAllEntitites() Gets all cached entities.
Entity	getByClassId(int classId) Gets the entity by its id.
Entity	getByEntityName(String entityName) Gets the entity by its name.
Entity	getByFileName(String fileName) Gets the entity by the mapfile name.
EntityFactory	getEntityFactory() Gets the entity factory singleton.
Collection<ForeignKey>	getForeignKeys() Gets all foreign keys.
boolean	isSchemaNameMapped() Returns whether schema names are mapped.
Entity	loadByFileName(ModelDefaults defaults, String fileName) Loads an entity for a given mapfile name. Entities are cached so they are loaded and parsed only once.
protected Entity	loadByFileName(ModelDefaults defaults, String fileName, boolean updateRelations) Loads an entity for a given mapfile name. Entities are cached so they are loaded and parsed only once.
void	loadModel(String modelDir, ModelDefaults defaults) Loads the whole model from the model directory if not yet done.
void	refreshModel() Refreshes the model. Checks for changes and reloads if necessary.
void	setSchemaNameMapped(boolean mapSchemas) Sets whether schema names should be mapped to the leading part of tablenames.
protected void	updateCompositePath(List<Relation> compositePath, Entity entity) Updates the composite path.
protected void	updateRelations(ModelDefaults defaults) Updates the inheritance links and relations of all entities in the model.
protected void	updateRelations(ModelDefaults defaults, ModelEntity loadedModelEntity) Updates all relations.
protected String	validateComponents(Entity entity, Integrity integrity, StringBuilder exMsg, Set<Entity> exEntities) Verifies that the integrity is the same within a given composite hierarchy.
protected String	validateInheritanceHierarchy(Entity entity, InheritanceType inheritanceType, TrackType trackType, Integrity integrity, StringBuilder exMsg, Set<Entity> exEntities) Verifies that the inheritance, integrity and track type is the same within a given interitance hierarchy. Notice that concrete classes (the leafs of the hierarchy) must have InheritanceType.NONE defined!

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.tentackle.model.Model

getInstance

Constructor Detail

ModelImpl

public ModelImpl()

Creates a model.

Method Detail

setSchemaNameMapped

public void setSchemaNameMapped(boolean mapSchemas)

Description copied from interface: Model

Sets whether schema names should be mapped to the leading part of tablenames.

Specified by:

setSchemaNameMapped in interface Model

Parameters:

mapSchemas - true if map

isSchemaNameMapped

public boolean isSchemaNameMapped()

Description copied from interface: Model

Returns whether schema names are mapped.

Specified by:

isSchemaNameMapped in interface Model

Returns:

true if mapped

getEntityFactory

public EntityFactory getEntityFactory()

Description copied from interface: Model

Gets the entity factory singleton.

Specified by:

getEntityFactory in interface Model

Returns:

the entity model factory

loadModel

public void loadModel(String modelDir,
                      ModelDefaults defaults)
               throws ModelException

Description copied from interface: Model

Loads the whole model from the model directory if not yet done.

Specified by:

loadModel in interface Model

Parameters:

modelDir - the directory containing the model files

defaults - model defaults, null if none

Throws:

ModelException - if the model is inconsistent

clearModel

public void clearModel()

Description copied from interface: Model

Clears the model.

Specified by:

clearModel in interface Model

refreshModel

public void refreshModel()
                  throws ModelException

Description copied from interface: Model

Refreshes the model.
Checks for changes and reloads if necessary.

Specified by:

refreshModel in interface Model

Throws:

ModelException - if the model is inconsistent

getAllEntitites

public Collection<Entity> getAllEntitites()
                                   throws ModelException

Description copied from interface: Model

Gets all cached entities.

Specified by:

getAllEntitites in interface Model

Returns:

all entities loaded so far

Throws:

ModelException - if the model is inconsistent

getByFileName

public Entity getByFileName(String fileName)
                     throws ModelException

Description copied from interface: Model

Gets the entity by the mapfile name.

Specified by:

getByFileName in interface Model

Parameters:

fileName - the name of the mapfile

Returns:

the entity, null if no such entity

Throws:

ModelException - if the model is inconsistent

getByEntityName

public Entity getByEntityName(String entityName)
                       throws ModelException

Description copied from interface: Model

Gets the entity by its name.

Specified by:

getByEntityName in interface Model

Parameters:

entityName - the name

Returns:

the entity, null if no such entity

Throws:

ModelException - if the model is inconsistent

getByClassId

public Entity getByClassId(int classId)
                    throws ModelException

Description copied from interface: Model

Gets the entity by its id.

Specified by:

getByClassId in interface Model

Parameters:

classId - the class id

Returns:

the entity, null if no such entity

Throws:

ModelException - if the model is inconsistent

loadByFileName

public Entity loadByFileName(ModelDefaults defaults,
                             String fileName)
                      throws ModelException

Description copied from interface: Model

Loads an entity for a given mapfile name.
Entities are cached so they are loaded and parsed only once.

Specified by:

loadByFileName in interface Model

Parameters:

defaults - the model defaults

fileName - the name of the mapfile

Returns:

the entity

Throws:

ModelException - if no such mapfile or parsing error

loadByFileName

protected Entity loadByFileName(ModelDefaults defaults,
                                String fileName,
                                boolean updateRelations)
                         throws ModelException

Loads an entity for a given mapfile name.
Entities are cached so they are loaded and parsed only once.

Parameters:

defaults - the model defaults

fileName - the name of the mapfile

updateRelations - true if update the related entites in the model

Returns:

the entity

Throws:

ModelException - if no such mapfile or parsing error

updateRelations

protected void updateRelations(ModelDefaults defaults)
                        throws ModelException

Updates the inheritance links and relations of all entities in the model.

Parameters:

defaults - the model defaults

Throws:

ModelException - if relations or inheritance misconfigured

updateRelations

protected void updateRelations(ModelDefaults defaults,
                               ModelEntity loadedModelEntity)
                        throws ModelException

Updates all relations.

Parameters:

defaults - the model defaults

loadedModelEntity - the entity that caused the update, null if none

Throws:

ModelException - if relations or inheritance misconfigured

updateCompositePath

protected void updateCompositePath(List<Relation> compositePath,
                                   Entity entity)

Updates the composite path.

Parameters:

compositePath - the path that leads to given entity so far

entity - the entity

getForeignKeys

public Collection<ForeignKey> getForeignKeys()
                                      throws ModelException

Description copied from interface: Model

Gets all foreign keys.

Specified by:

getForeignKeys in interface Model

Returns:

the foreign keys

Throws:

ModelException - if model is inconsistent

createEntityFactory

protected EntityFactory createEntityFactory()

Creates the entity factory for this model.
The method is invoked once from within the Model constructor.

Returns:

the entity factory

createFileReader

protected Reader createFileReader(String fileName)
                           throws ModelException

Creates a reader for given filename.

Parameters:

fileName - the filename

Returns:

the reader

Throws:

ModelException - if creating the reader failed (because file not found)

validateInheritanceHierarchy

protected String validateInheritanceHierarchy(Entity entity,
                                              InheritanceType inheritanceType,
                                              TrackType trackType,
                                              Integrity integrity,
                                              StringBuilder exMsg,
                                              Set<Entity> exEntities)

Verifies that the inheritance, integrity and track type is the same within a given interitance hierarchy.
Notice that concrete classes (the leafs of the hierarchy) must have InheritanceType.NONE defined!

Parameters:

entity - the entity to check

inheritanceType - the inheritance type

trackType - the tracking type

integrity - the integrity type

exMsg - execption message buffer

exEntities - the entities related to the exception message

Returns:

the error string, empty if all is ok

validateComponents

protected String validateComponents(Entity entity,
                                    Integrity integrity,
                                    StringBuilder exMsg,
                                    Set<Entity> exEntities)

Verifies that the integrity is the same within a given composite hierarchy.

Parameters:

entity - the entity to check

integrity - the integrity type

exMsg - execption message buffer

exEntities - the entities related to the exception message

Returns:

the error string, empty if all is ok