Examples with Topic org.neo4j.ogm.domain.forum.Topic used on opensource projects

Example 6 with Topic

use of org.neo4j.ogm.domain.forum.Topic in project neo4j-ogm by neo4j.

the class EntityGraphMapperTest method shouldProduceCypherForSavingNewRichRelationshipBetweenNodes.

@Test
public void shouldProduceCypherForSavingNewRichRelationshipBetweenNodes() {
    Forum forum = new Forum();
    forum.setName("SDN FAQs");
    Topic topic = new Topic();
    ForumTopicLink link = new ForumTopicLink();
    link.setForum(forum);
    link.setTopic(topic);
    link.setTimestamp(1647209L);
    forum.setTopicsInForum(Arrays.asList(link));
    session.save(forum);
    session.clear();
    assertThat(session.query("MATCH (f:Forum {name:'SDN FAQs'})-[:HAS_TOPIC {timestamp:1647209}]->(t:Topic) return f", emptyMap()).queryResults()).hasSize(1);
}

Example 7 with Topic

use of org.neo4j.ogm.domain.forum.Topic in project neo4j-ogm by neo4j.

the class CompilerTest method shouldCreateRelationshipWithPropertiesFromRelationshipEntity.

@Test
public void shouldCreateRelationshipWithPropertiesFromRelationshipEntity() {
    Forum forum = new Forum();
    forum.setName("SDN FAQs");
    Topic topic = new Topic();
    ForumTopicLink link = new ForumTopicLink();
    link.setForum(forum);
    link.setTopic(topic);
    link.setTimestamp(1647209L);
    forum.setTopicsInForum(Arrays.asList(link));
    // the entire object tree is accessible from the forum
    // Note that a relationshipEntity has a direction by default (srcNode -> tgtNode)
    // because it has an annotation, so we should not create an inverse relationship.
    Compiler compiler = mapAndCompile(forum, -1);
    List<Statement> statements = compiler.createNodesStatements();
    assertThat(statements).extracting(Statement::getStatement).containsOnly("UNWIND $rows as row CREATE (n:`Forum`) SET n=row.props RETURN row.nodeRef as ref, ID(n) as id, $type as type", "UNWIND $rows as row CREATE (n:`Topic`) SET n=row.props RETURN row.nodeRef as ref, ID(n) as id, $type as type");
    for (Statement statement : statements) {
        List rows = (List) statement.getParameters().get("rows");
        assertThat(rows).hasSize(1);
    }
    statements = compiler.createRelationshipsStatements();
    assertThat(statements).extracting(Statement::getStatement).containsOnly("UNWIND $rows as row MATCH (startNode) WHERE ID(startNode) = row.startNodeId WITH row,startNode MATCH (endNode) WHERE ID(endNode) = row.endNodeId CREATE (startNode)-[rel:`HAS_TOPIC`]->(endNode) SET rel += row.props RETURN row.relRef as ref, ID(rel) as id, $type as type");
    for (Statement statement : statements) {
        List rows = (List) statement.getParameters().get("rows");
        assertThat(rows).hasSize(1);
    }
    // the entire object tree is accessible from the link
    compiler = mapAndCompile(link, -1);
    statements = compiler.createNodesStatements();
    assertThat(statements).extracting(Statement::getStatement).containsOnly("UNWIND $rows as row CREATE (n:`Forum`) SET n=row.props RETURN row.nodeRef as ref, ID(n) as id, $type as type", "UNWIND $rows as row CREATE (n:`Topic`) SET n=row.props RETURN row.nodeRef as ref, ID(n) as id, $type as type");
    for (Statement statement : statements) {
        List rows = (List) statement.getParameters().get("rows");
        assertThat(rows).hasSize(1);
    }
    statements = compiler.createRelationshipsStatements();
    assertThat(statements).extracting(Statement::getStatement).containsOnly("UNWIND $rows as row MATCH (startNode) WHERE ID(startNode) = row.startNodeId WITH row,startNode MATCH (endNode) WHERE ID(endNode) = row.endNodeId CREATE (startNode)-[rel:`HAS_TOPIC`]->(endNode) SET rel += row.props RETURN row.relRef as ref, ID(rel) as id, $type as type");
    for (Statement statement : statements) {
        List rows = (List) statement.getParameters().get("rows");
        assertThat(rows).hasSize(1);
    }
    // the related entity is not visible from the Topic object.
    compiler = mapAndCompile(topic, -1);
    statements = compiler.createNodesStatements();
    assertThat(statements).extracting(Statement::getStatement).containsOnly("UNWIND $rows as row CREATE (n:`Topic`) SET n=row.props RETURN row.nodeRef as ref, ID(n) as id, $type as type");
    for (Statement statement : statements) {
        List rows = (List) statement.getParameters().get("rows");
        assertThat(rows).hasSize(1);
    }
    statements = compiler.createRelationshipsStatements();
    assertThat(statements).isEmpty();
}

Example 8 with Topic

use of org.neo4j.ogm.domain.forum.Topic in project neo4j-ogm by neo4j.

the class CompilerTest method shouldUpdatingExistingRelationshipEntity.

@Test
public void shouldUpdatingExistingRelationshipEntity() {
    Long forumId = 0L;
    Long topicId = 1L;
    Long relationshipId = 2L;
    Forum forum = new Forum();
    forum.setId(forumId);
    forum.setName("Spring Data Neo4j");
    Topic topic = new Topic();
    topic.setTopicId(topicId);
    topic.setInActive(Boolean.FALSE);
    ForumTopicLink link = new ForumTopicLink();
    link.setId(relationshipId);
    link.setForum(forum);
    link.setTopic(topic);
    forum.setTopicsInForum(Arrays.asList(link));
    mappingContext.addNodeEntity(forum);
    mappingContext.addNodeEntity(topic);
    mappingContext.addRelationshipEntity(link, relationshipId);
    MappedRelationship mappedRelationship = new MappedRelationship(forumId, "HAS_TOPIC", topicId, relationshipId, Forum.class, ForumTopicLink.class);
    mappingContext.addRelationship(mappedRelationship);
    // change the timestamp
    link.setTimestamp(327790L);
    // expect the property on the relationship entity to be updated on the graph relationship
    Compiler compiler = mapAndCompile(link, -1);
    List<Statement> statements = compiler.createNodesStatements();
    assertThat(statements).isEmpty();
    statements = compiler.updateRelationshipStatements();
    assertThat(statements).extracting(Statement::getStatement).containsOnly("UNWIND $rows AS row MATCH ()-[r]->() WHERE ID(r) = row.relId SET r += row.props RETURN ID(r) as ref, ID(r) as id, $type as type");
    assertThat((List) statements.get(0).getParameters().get("rows")).hasSize(1);
}