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Merged
merged 2 commits into from
Mar 24, 2021
Merged

Fatima #4

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c6fffce
oracle of Bacon-Neo4J
FatimaAfilala Mar 24, 2021
c3cedac
Merge branch 'master' of https://github.com/sabrinette/oracle-of-baco…
FatimaAfilala Mar 24, 2021
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5 changes: 5 additions & 0 deletions oracle-of-bacon-backend/.gitignore
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,10 @@
# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio and Webstorm
# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
.idea/
*.iml
.classpath
.project
.settings

# User-specific stuff:
.idea/workspace.xml
Expand Down Expand Up @@ -90,3 +94,4 @@ gradle-app.setting
# gradle/wrapper/gradle-wrapper.properties

# End of https://www.gitignore.io/api/gradle,java,intellij
/bin/
51 changes: 11 additions & 40 deletions oracle-of-bacon-backend/src/main/java/com/serli/oracle/of/bacon/api/APIEndPoint.java
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Expand Up @@ -9,6 +9,7 @@
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

public class APIEndPoint {
private final Neo4JRepository neo4JRepository;
Expand All @@ -24,47 +25,17 @@ public APIEndPoint() {
@Get("bacon-to?actor=:actorName")
// change return type
public String getConnectionsToKevinBacon(String actorName) {
redisRepository.saveSearch(actorName);
System.out.println("-----\nappel getConnectionsToKevinBacon...");
List<Neo4JRepository.GraphItem> elementsGraphe = neo4JRepository.getConnectionsToKevinBacon(actorName);
String elements = elementsGraphe.stream().map(element -> element.toString()).collect(Collectors.joining(", "));

return "[\n" +
"{\n" +
"\"data\": {\n" +
"\"id\": 85449,\n" +
"\"type\": \"Actor\",\n" +
"\"value\": \"Bacon, Kevin (I)\"\n" +
"}\n" +
"},\n" +
"{\n" +
"\"data\": {\n" +
"\"id\": 2278636,\n" +
"\"type\": \"Movie\",\n" +
"\"value\": \"Mystic River (2003)\"\n" +
"}\n" +
"},\n" +
"{\n" +
"\"data\": {\n" +
"\"id\": 1394181,\n" +
"\"type\": \"Actor\",\n" +
"\"value\": \"Robbins, Tim (I)\"\n" +
"}\n" +
"},\n" +
"{\n" +
"\"data\": {\n" +
"\"id\": 579848,\n" +
"\"source\": 85449,\n" +
"\"target\": 2278636,\n" +
"\"value\": \"PLAYED_IN\"\n" +
"}\n" +
"},\n" +
"{\n" +
"\"data\": {\n" +
"\"id\": 9985692,\n" +
"\"source\": 1394181,\n" +
"\"target\": 2278636,\n" +
"\"value\": \"PLAYED_IN\"\n" +
"}\n" +
"}\n" +
"]";
System.out.println("Retourne le resultat :");
System.out.println(elements);

System.out.println("-----");
return "[" + elements + "]";


}

@Get("suggest?q=:searchQuery")
Expand Down
70 changes: 66 additions & 4 deletions ...-of-bacon-backend/src/main/java/com/serli/oracle/of/bacon/repository/Neo4JRepository.java
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Expand Up @@ -9,19 +9,69 @@
import org.neo4j.driver.Session;
import org.neo4j.driver.types.Node;
import org.neo4j.driver.types.Relationship;
import org.neo4j.driver.internal.value.PathValue;
import org.neo4j.driver.v1.Record;
import org.neo4j.driver.v1.StatementResult;
import org.neo4j.driver.v1.Transaction;
import org.neo4j.driver.v1.Value;
import org.neo4j.driver.v1.types.Node;
import org.neo4j.driver.v1.types.Path;
import org.neo4j.driver.v1.types.Relationship;
import static org.neo4j.driver.v1.Values.parameters;

import java.util.LinkedList;

public class Neo4JRepository {
private final Driver driver;

public Neo4JRepository() {
this.driver = GraphDatabase.driver("bolt://localhost:7687", AuthTokens.basic("neo4j", "password"));
this.driver = GraphDatabase.driver("bolt://localhost:7687", AuthTokens.basic("neo4j", "motdepasse"));
}

public List<Map<String, GraphItem>> getConnectionsToKevinBacon(String actorName) {
public List<GraphItem> getConnectionsToKevinBacon(String actorName) {
Session session = driver.session();
// Implémentation de l'oracle de Bacon
List<GraphItem> graphe = new LinkedList<>();
StatementResult resultats = null;
try (Transaction transaction = session.beginTransaction())
{
resultats = transaction.run(getQuery(), parameters("nomAutreActeur", actorName));
transaction.success();
}

while (resultats.hasNext()) {
Record entree = resultats.next();
System.out.println(entree);
List<Value> valeurs = entree.values();

// normalement il n'y a qu'un path par Record
for (Value valeur : valeurs) {
Path chemin = valeur.asPath();

chemin.nodes().forEach(node -> {
// |)4r|< |\/|4g1(
String type = node.labels().iterator().next();

String clePropriete = "Actor".equals(type) ? "name" : "title";
graphe.add(new GraphNode(node.id(), node.get(clePropriete).asString(), type));
});

chemin.relationships().forEach(relationship -> {
graphe.add(new GraphEdge(relationship.id(), relationship.startNodeId(), relationship.endNodeId(), relationship.type()));
});
}
}

return graphe;
}

private String getQuery() {
StringBuilder strBuilder = new StringBuilder();
strBuilder.append("MATCH p = shortestPath((Kevin:Actor {name: \"Bacon, Kevin (I)\"})-[:PLAYED_IN*]-(Other:Actor {name: {nomAutreActeur}})) ")
.append("RETURN p")
;
return strBuilder.toString();

// TODO
return null;
}

private GraphEdge mapRelationShipToNodeEdge(Relationship relationship) {
Expand Down Expand Up @@ -85,5 +135,17 @@ public GraphEdge(long id, long source, long target, String value) {
this.target = target;
this.value = value;
}
@Override
public String toString() {
StringBuilder strBuilder = new StringBuilder();
strBuilder.append("{ \"data\" : { ")
.append(" \"id\": " ).append(this.id ).append(", " )
.append(" \"source\": " ).append(this.source).append(", " )
.append(" \"target\": " ).append(this.target).append(", " )
.append(" \"value\": \"").append(this.value ).append("\"")
.append("}}")
;
return strBuilder.toString();
}
}
}