Package science.aist.neo4j.repository

Class AbstractNeo4JRepository<S,ID>

java.lang.Object

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

Type Parameters:

S - Type of object to be stored to database

ID - Simple Datatype of object to be stored to database (simple datatype = field type and not node type)

All Implemented Interfaces:

Neo4jRepository<S,ID>

Direct Known Subclasses:

AbstractNeo4JNodeRepositoyImpl, AbstractNeo4JRelationshipRepositoyImpl, FutureRepository

public abstract class AbstractNeo4JRepository<S,ID>
extends Object
implements Neo4jRepository<S,ID>

Intermediate class combining features both the node and relationship repositories both have

Since:

1.0

Author:

Oliver Krauss

Constructor Summary

Constructors

Constructor	Description
AbstractNeo4JRepository(TransactionManager manager)

Method Summary

Modifier and Type	Method	Description
protected org.neo4j.driver.Value	buildParameters(List<Pair<String,Object>> tuples)	Helper function that turns the key value pairs into a Values object for the parameterized queryTyped
protected String	buildWhere(List<Pair<String,Object>> tuples)	Helper function that builds the WHERE statement for findByCondition
Iterable<S>	findAllBy(String field, String value)	Find all science.neo4j.nodes by a field with a given value (eg.
abstract Iterable<S>	findAllBy(String condition, org.neo4j.driver.Value parameters)	Returns ALL science.neo4j.nodes that satisfies the given condition.
Iterable<S>	findAllBy(List<Pair<String,Object>> values)	Find science.neo4j.nodes by a list of fields that should match a given value
S	findBy(String field, String value)	Find node by a field with a given value
abstract S	findBy(String condition, org.neo4j.driver.Value parameters)	Returns the first node that satisfies the given condition.
S	findBy(List<Pair<String,Object>> values)	Find node by a list of fields that should match a given value
static AbstractNeo4JRepository	getProvidedRepository(TransactionManager manager, String signature)
protected TransactionManager	getTransactionManager()	gets value of field transactionManager
static void	provideRepository(TransactionManager manager, String signature, AbstractNeo4JRepository repository)

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

deleteAll, findAll, findAllAsStream, findById, findSubtree, findSubtree, findSubtree, save, saveAll

Constructor Detail

AbstractNeo4JRepository

public AbstractNeo4JRepository(TransactionManager manager)

Method Detail

getProvidedRepository

public static AbstractNeo4JRepository getProvidedRepository(TransactionManager manager,
                                                            String signature)

provideRepository

public static void provideRepository(TransactionManager manager,
                                     String signature,
                                     AbstractNeo4JRepository repository)

getTransactionManager

protected TransactionManager getTransactionManager()

gets value of field transactionManager

Returns:

value of field transactionManager

See Also:

transactionManager

buildWhere

protected String buildWhere(List<Pair<String,Object>> tuples)

Helper function that builds the WHERE statement for findByCondition

Parameters:

tuples - to be transformed into "n.key = n.value AND ..."

Returns:

String for build

buildParameters

protected org.neo4j.driver.Value buildParameters(List<Pair<String,Object>> tuples)

Helper function that turns the key value pairs into a Values object for the parameterized queryTyped

Parameters:

tuples - to be transformed into a Value for the DB

Returns:

Value to be used in cypher queryTyped

findBy

public abstract S findBy(String condition,
                         org.neo4j.driver.Value parameters)

Returns the first node that satisfies the given condition. The condition may access the node with "n" Example: findByCondition("n.name = $name", Values.parameters("name", "Dijkstra"))

Parameters:

condition - any condition that would be after the "WHERE" in a cypher queryTyped

parameters - all parameters defined in the condition (parameters optional)

Returns:

first node that satisifes condition with parameters

findAllBy

public abstract Iterable<S> findAllBy(String condition,
                                      org.neo4j.driver.Value parameters)

Returns ALL science.neo4j.nodes that satisfies the given condition. The condition may access the node with "n" Example: findByCondition("n.name in $names", Values.parameters("names", Values.parameters("Dijkstra", "Knuth", "Turing")))

Parameters:

condition - any condition that would be after the "WHERE" in a cypher queryTyped

parameters - all parameters defined in the condition (parameters optional)

Returns:

first node that satisifes condition with parameters

findBy

public S findBy(String field,
                String value)

Find node by a field with a given value

Parameters:

field - name of field that should match

value - value that should be matched to

Returns:

first node that has the given value in the field

findAllBy

public Iterable<S> findAllBy(String field,
                             String value)

Find all science.neo4j.nodes by a field with a given value (eg. n.amount = 3)

Parameters:

field - name of field that should match

value - value that should be matched to

Returns:

all science.neo4j.nodes that have the given value in the field

findBy

public S findBy(List<Pair<String,Object>> values)

Find node by a list of fields that should match a given value

Parameters:

values - Key Value pairs where the key is the fieldname and the value is the value the field should match

Returns:

first node that matches on all fields

findAllBy

public Iterable<S> findAllBy(List<Pair<String,Object>> values)

Find science.neo4j.nodes by a list of fields that should match a given value

Parameters:

values - Key Value pairs where the key is the fieldname and the value is the value the field should match

Returns:

all science.neo4j.nodes that match fields