Package science.aist.neo4j.reflective

Class ReflectiveNeo4JNodeRepositoryImpl<S>

java.lang.Object

science.aist.neo4j.repository.AbstractNeo4JRepository<S,Long>

science.aist.neo4j.repository.AbstractNeo4JNodeRepositoyImpl<S>

science.aist.neo4j.reflective.ReflectiveNeo4JNodeRepositoryImpl<S>

Type Parameters:

S - Type of node

All Implemented Interfaces:

Neo4jQueryRepository, Neo4jRepository<S,Long>

Direct Known Subclasses:

NamespaceAwareReflectiveNeo4JNodeRepositoryImpl

public class ReflectiveNeo4JNodeRepositoryImpl<S>
extends AbstractNeo4JNodeRepositoyImpl<S>

Implementation of AbstractNeo4JNodeRepositoyImpl using java reflection TODO #8 compile repository classes to improve performance

Since:

1.0

Author:

Oliver Krauss

Field Summary

Fields

Modifier and Type	Field	Description
protected Class<S>	clazz	Class that this repository is managing
protected ClassInformation	info	Metadata for storage purposes
protected Map<Class,AbstractNeo4JRepository>	repositories	Repositories for relationships

Fields inherited from class science.aist.neo4j.repository.AbstractNeo4JNodeRepositoyImpl

BULK_RELATIONSHIP_BULK_STATEMENT, BULK_RELATIONSHIP_STATEMENT, CLASSNAME, CREATE_BULK_STATEMENT, CREATE_STATEMENT, DELETE_ALL_STATEMENT, FIND_ALL_STATEMENT, FIND_BY_ID_STATEMENT, FIND_BY_WHERE_STATEMENT, FIND_SUBTREE_STATEMENT, logger, RELATIONSHIP_BULK_STATEMENT, RELATIONSHIP_STATEMENT, UPDATE_BULK_STATEMENT, UPDATE_STATEMENT

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ReflectiveNeo4JNodeRepositoryImpl(TransactionManager manager)	Internal constructor for pushing through the manager to the top level
	ReflectiveNeo4JNodeRepositoryImpl(TransactionManager manager, Class<S> clazz)
	ReflectiveNeo4JNodeRepositoryImpl(TransactionManager manager, ParameterizedType type)	Generates the repository by a Generic Type

Method Summary

Modifier and Type	Method	Description
protected S	cast(org.neo4j.driver.Value value, org.neo4j.driver.Value rels, org.neo4j.driver.Value nodes)	Casts the result of the queryTyped into a DomainObject
protected AbstractNeo4JRepository	findRepository(RelationshipInformation information)
protected Long	getId(S node)	Helper method for finding the id of a node
protected <T extends S> Collection<T>	handleRelationships(Collection<T> nodes)	Helper method that is responsible for storing all relationships in a multitude of nodes Use "saveBulkRelationship" and "saveBulkRelationshipBulk" when implementing this method
protected <T extends S> T	handleRelationships(T node)	Helper method that is responsible for storing all relationships.
protected Map<String,Object>	objectify(S node)	Turns all properties of a Node into something to be used by the queries
<T> T	query(String query, org.neo4j.driver.Value parameters, Class<T> clazz)	Method for executing a query with a single result in a own transaction
<T> Stream<T>	queryAll(String query, org.neo4j.driver.Value parameters, Class<T> clazz)	Method for executing a query with multiple results in a own transaction
protected S	setId(S node, Long id)	Helper method for setting the id when a node was stored to the database
void	setRelationshipOverrides(Map<String,Class> overrides)
void	setRepositories(Map<Class,AbstractNeo4JRepository> repositories)	Not required as not all Nodes have relationships to other science.neo4j.nodes.

Methods inherited from class science.aist.neo4j.repository.AbstractNeo4JNodeRepositoyImpl

deleteAll, execute, executeAll, findAll, findAllBy, findBy, findById, findSubtree, findSubtree, findSubtree, init, queryAllHelp, queryAllNormalOrTyped, queryAllTyped, queryHelp, queryNormalOrTyped, queryTyped, save, saveAll, saveBulkRelationship, saveBulkRelationshipBulk, saveRelationship, saveRelationshipBulk

Methods inherited from class science.aist.neo4j.repository.AbstractNeo4JRepository

buildParameters, buildWhere, findAllBy, findAllBy, findBy, findBy, getProvidedRepository, getTransactionManager, provideRepository

Methods inherited from class java.lang.Object

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

Methods inherited from interface science.aist.neo4j.Neo4jRepository

findAllAsStream

Field Detail

clazz

protected Class<S> clazz

Class that this repository is managing

info

protected ClassInformation info

Metadata for storage purposes

repositories

protected Map<Class,AbstractNeo4JRepository> repositories

Repositories for relationships

Constructor Detail

ReflectiveNeo4JNodeRepositoryImpl

protected ReflectiveNeo4JNodeRepositoryImpl(TransactionManager manager)

Internal constructor for pushing through the manager to the top level

Parameters:

manager - used to handle transactions

ReflectiveNeo4JNodeRepositoryImpl

public ReflectiveNeo4JNodeRepositoryImpl(TransactionManager manager,
                                         ParameterizedType type)

Generates the repository by a Generic Type

Parameters:

manager - used to handle transactions

type - type of the handled class

ReflectiveNeo4JNodeRepositoryImpl

public ReflectiveNeo4JNodeRepositoryImpl(TransactionManager manager,
                                         Class<S> clazz)

Method Detail

cast

protected S cast(org.neo4j.driver.Value value,
                 org.neo4j.driver.Value rels,
                 org.neo4j.driver.Value nodes)

Description copied from class: AbstractNeo4JNodeRepositoyImpl

Casts the result of the queryTyped into a DomainObject

Specified by:

cast in class AbstractNeo4JNodeRepositoyImpl<S>

Parameters:

value - the value to be casted as root

rels - the relationships in the subgraph

nodes - the relationships are pointing to

Returns:

the casted result

findRepository

protected AbstractNeo4JRepository findRepository(RelationshipInformation information)

setId

protected S setId(S node,
                  Long id)

Description copied from class: AbstractNeo4JNodeRepositoyImpl

Helper method for setting the id when a node was stored to the database

Specified by:

setId in class AbstractNeo4JNodeRepositoyImpl<S>

Parameters:

node - to be assigned an id

id - id to be assigned

Returns:

node with id

getId

protected Long getId(S node)

Description copied from class: AbstractNeo4JNodeRepositoyImpl

Helper method for finding the id of a node

Specified by:

getId in class AbstractNeo4JNodeRepositoyImpl<S>

Parameters:

node - to return the id from

Returns:

id of node or null

handleRelationships

protected <T extends S> T handleRelationships(T node)

Description copied from class: AbstractNeo4JNodeRepositoyImpl

Helper method that is responsible for storing all relationships. Use "saveRelationship" and "saveRelationshipBulk" when implementing this method!

Specified by:

handleRelationships in class AbstractNeo4JNodeRepositoyImpl<S>

Type Parameters:

T - extension of S

Parameters:

node - to be saved

Returns:

node

handleRelationships

protected <T extends S> Collection<T> handleRelationships(Collection<T> nodes)

Description copied from class: AbstractNeo4JNodeRepositoyImpl

Helper method that is responsible for storing all relationships in a multitude of nodes Use "saveBulkRelationship" and "saveBulkRelationshipBulk" when implementing this method

Specified by:

handleRelationships in class AbstractNeo4JNodeRepositoyImpl<S>

Type Parameters:

T - extension of S

Parameters:

nodes - the nodes with relations which should be handled

Returns:

the stored nodes

objectify

protected Map<String,Object> objectify(S node)

Description copied from class: AbstractNeo4JNodeRepositoyImpl

Turns all properties of a Node into something to be used by the queries

Specified by:

objectify in class AbstractNeo4JNodeRepositoyImpl<S>

Parameters:

node - to be transformed

Returns:

a map containing the id, and another map that contains all properties

query

public <T> T query(String query,
                   org.neo4j.driver.Value parameters,
                   Class<T> clazz)

Description copied from interface: Neo4jQueryRepository

Method for executing a query with a single result in a own transaction

Specified by:

query in interface Neo4jQueryRepository

Overrides:

query in class AbstractNeo4JNodeRepositoyImpl<S>

Type Parameters:

T - Result type

Parameters:

query - The query text

parameters - The query parameters

clazz - The result clazz type

Returns:

Single query result

queryAll

public <T> Stream<T> queryAll(String query,
                              org.neo4j.driver.Value parameters,
                              Class<T> clazz)

Description copied from interface: Neo4jQueryRepository

Method for executing a query with multiple results in a own transaction

Specified by:

queryAll in interface Neo4jQueryRepository

Overrides:

queryAll in class AbstractNeo4JNodeRepositoyImpl<S>

Type Parameters:

T - Result type

Parameters:

query - The query text

parameters - The query parameters

clazz - The result clazz type

Returns:

Stream of results

setRepositories

public void setRepositories(Map<Class,AbstractNeo4JRepository> repositories)

Not required as not all Nodes have relationships to other science.neo4j.nodes.

Parameters:

repositories - All related repositories are required

setRelationshipOverrides

public void setRelationshipOverrides(Map<String,Class> overrides)