er.neo4jadaptor.ersatz.neo4j

Class Neo4JErsatz

java.lang.Object

er.neo4jadaptor.ersatz.Ersatz

er.neo4jadaptor.ersatz.neo4j.Neo4JErsatz

Direct Known Subclasses:

Neo4JNodeErsatz, Neo4JRelationshipErsatz

public abstract class Neo4JErsatz
extends Ersatz

Ersatz stored using Neo4J PropertyContainer.

Author:

Jedrzej Sobanski

Field Summary

Fields

Modifier and Type	Field and Description
protected EOEntity	entity

Fields inherited from class er.neo4jadaptor.ersatz.Ersatz

EMPTY

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Neo4JErsatz(EOEntity entity, org.neo4j.graphdb.PropertyContainer pc)

Method Summary

Modifier and Type	Method and Description
Iterable<EOAttribute>	attributes() Gets all EO attributes that this ersatz object has values stored for.
static Neo4JErsatz	create(EOEntity entity, org.neo4j.graphdb.PropertyContainer pc) Create ersatz using values stored in the given property container.
Object	get(EOAttribute att) Gets neutral value for an EO attribute.
static Object	getAttribute(org.neo4j.graphdb.PropertyContainer container, EOAttribute att) Gets EO attribute value from a property container.
protected abstract Number	getForeignKeyValue(EORelationship rel) Gets ID of an object referenced by the given foreign key
org.neo4j.graphdb.PropertyContainer	getPropertyContainer()
void	put(EOAttribute att, Object value) Sets neutral java value for an EO attribute.
void	remove(EOAttribute att) Clears value for an EO attribute.
protected static void	setAttribute(org.neo4j.graphdb.PropertyContainer pc, EOAttribute att, Object value)
protected abstract void	setForeignKeyValue(EORelationship rel, Number val) Sets relationship value.

Methods inherited from class er.neo4jadaptor.ersatz.Ersatz

copy, delete

Methods inherited from class java.lang.Object

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

Field Detail

entity

protected final EOEntity entity

Constructor Detail

Neo4JErsatz

protected Neo4JErsatz(EOEntity entity,
                      org.neo4j.graphdb.PropertyContainer pc)

Method Detail

create

public static Neo4JErsatz create(EOEntity entity,
                                 org.neo4j.graphdb.PropertyContainer pc)

Create ersatz using values stored in the given property container.

Parameters:

entity - entity that the property container contains record for

pc - property container to read record values from

Returns:

ersatz for a record stored in property container

getPropertyContainer

public org.neo4j.graphdb.PropertyContainer getPropertyContainer()

attributes

public Iterable<EOAttribute> attributes()

Description copied from class: Ersatz

Gets all EO attributes that this ersatz object has values stored for.

Specified by:

attributes in class Ersatz

Returns:

EO attributes that it has values for

getForeignKeyValue

protected abstract Number getForeignKeyValue(EORelationship rel)

Gets ID of an object referenced by the given foreign key

Parameters:

rel - foreign key attribute

Returns:

referenced object ID

setForeignKeyValue

protected abstract void setForeignKeyValue(EORelationship rel,
                                           Number val)

Sets relationship value.

Parameters:

rel - relationship to set value for

val - ID of an object referenced by the relationship

get

public Object get(EOAttribute att)

Description copied from class: Ersatz

Gets neutral value for an EO attribute. It's not defined what implementations should do when given attribute that's not in Ersatz.attributes().

Specified by:

get in class Ersatz

Parameters:

att - EO attribute to retrieve value for

Returns:

neutral java value if attribute is known

put

public void put(EOAttribute att,
                Object value)

Description copied from class: Ersatz

Sets neutral java value for an EO attribute.

Specified by:

put in class Ersatz

Parameters:

att - EO attribute to set the value for

value - library independent value

getAttribute

public static Object getAttribute(org.neo4j.graphdb.PropertyContainer container,
                                  EOAttribute att)

Gets EO attribute value from a property container.

Parameters:

container -

att -

Returns:

EO attribute value

setAttribute

protected static void setAttribute(org.neo4j.graphdb.PropertyContainer pc,
                                   EOAttribute att,
                                   Object value)

remove

public void remove(EOAttribute att)

Description copied from class: Ersatz

Clears value for an EO attribute.

Specified by:

remove in class Ersatz