Package org.evomaster.client.java.controller.internal.db.neo4j

Class ReflectionBasedNeo4jClient

java.lang.Object

org.evomaster.client.java.controller.internal.db.neo4j.ReflectionBasedNeo4jClient

public class ReflectionBasedNeo4jClient
extends Object

Talks to the SUT's Neo4j driver through reflection, so that EvoMaster never has a compile-time dependency on neo4j-java-driver and cannot clash with whichever version the SUT ships. Mirrors the approach of ReflectionBasedRedisClient: every Class.forName / getMethod / invoke lives here, behind an ordinary typed API, so its callers hold no reflection of their own.

Only primitive projections cross this boundary (ids, label and type names, property maps), never the driver's own Node / Relationship types, which keeps the reflected surface down to Session.run, Result.list, Record.get and Value.as*.

Constructor Summary

Constructors

Constructor	Description
ReflectionBasedNeo4jClient(Object driver)

Method Summary

Modifier and Type	Method	Description
List<?>	asList(Object value)
Map<String,Object>	asMap(Object value)
String	asString(Object value)
void	close(Object session)
void	detachDeleteAll()	Empties the database: every node and every relationship attached to it.
Object	get(Object record, String key)	Reads the field key out of a Record.
List<?>	runAndList(Object session, String cypher)	Runs a read-only Cypher query and returns its records.
List<?>	runAndList(Object session, String cypher, Map<String,Object> parameters)	Runs a parameterised Cypher query and returns its records.
Object	session()	Opens a session.

Methods inherited from class java.lang.Object

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

Constructor Details

ReflectionBasedNeo4jClient

public ReflectionBasedNeo4jClient(Object driver)

Parameters:

driver - the SUT's org.neo4j.driver.Driver

Method Details

session

public Object session()

Opens a session. The caller is responsible for passing it to close(Object).

close

public void close(Object session)

runAndList

public List<?> runAndList(Object session,
 String cypher)

Runs a read-only Cypher query and returns its records.

runAndList

public List<?> runAndList(Object session,
 String cypher,
 Map<String,Object> parameters)

Runs a parameterised Cypher query and returns its records. Values travel as a parameter map rather than being interpolated into the query text, which avoids quoting and typing problems.

Parameters:

parameters - keys are parameter names without the leading $, values are the values to bind to them

detachDeleteAll

public void detachDeleteAll()

Empties the database: every node and every relationship attached to it.

get

public Object get(Object record,
 String key)

Reads the field key out of a Record.

asString

public String asString(Object value)

asList

public List<?> asList(Object value)

asMap

public Map<String,Object> asMap(Object value)