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

Example 1 with Forum

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

the class EntityGraphMapperTest method shouldProduceCypherForUpdatingExistingRichRelationshipBetweenNodes.

@Test
public void shouldProduceCypherForUpdatingExistingRichRelationshipBetweenNodes() {
    Iterable<Map<String, Object>> executionResult = session.query("CREATE (f:Forum {name:'Spring Data Neo4j'})-[r:HAS_TOPIC {timestamp:20000}]->(t:Topic {inActive:false}) " + "RETURN id(f) AS forumId, id(t) AS topicId, id(r) AS relId", emptyMap()).queryResults();
    Map<String, Object> rs = executionResult.iterator().next();
    Long forumId = (Long) rs.get("forumId");
    Long topicId = (Long) rs.get("topicId");
    Long relationshipId = (Long) rs.get("relId");
    session.clear();
    Forum forum = session.load(Forum.class, forumId);
    Topic topic = session.load(Topic.class, topicId);
    ForumTopicLink link = session.load(ForumTopicLink.class, relationshipId);
    link.setTimestamp(327790L);
    forum.setTopicsInForum(Arrays.asList(link));
    session.save(forum);
    session.clear();
    assertThat(session.query("MATCH (f:Forum {name:'Spring Data Neo4j'})-[r:HAS_TOPIC {timestamp:327790}]->(t:Topic {inActive:false}) " + "return f", emptyMap()).queryResults()).hasSize(1);
}

Example 2 with Forum

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

the class CompilerTest method shouldDeleteExistingRelationshipEntity.

@Test
public void shouldDeleteExistingRelationshipEntity() {
    Long forumId = 0L;
    Long topicId = 1L;
    Long linkId = 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(linkId);
    link.setForum(forum);
    link.setTopic(topic);
    forum.setTopicsInForum(Arrays.asList(link));
    mappingContext.addNodeEntity(forum);
    mappingContext.addNodeEntity(topic);
    mappingContext.addRelationshipEntity(link, linkId);
    // the mapping context remembers the relationship between the forum and the topic in the graph
    mappingContext.addRelationship(new MappedRelationship(forumId, "HAS_TOPIC", topicId, null, Forum.class, ForumTopicLink.class));
    // unlink the objects manually
    forum.setTopicsInForum(null);
    link.setTopic(null);
    // expect the delete to be recognised when the forum is saved
    Compiler compiler = mapAndCompile(forum, -1);
    List<Statement> statements = compiler.createRelationshipsStatements();
    assertThat(statements).isEmpty();
    statements = compiler.deleteRelationshipStatements();
    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 MATCH (startNode)-[rel:`HAS_TOPIC`]->(endNode) DELETE rel");
    assertThat(((List) statements.get(0).getParameters().get("rows"))).hasSize(1);
// expect the delete to be recognised if the RE is saved
// expectOnSave(link, "MATCH ($0)-[_0:HAS_TOPIC]->($1) WHERE id($0)=0 AND id($1)=1 DELETE _0");
// 
// // expect nothing to happen if the topic is saved, because the domain model does not
// // permit navigation from the topic to the RE (topic has no reference to it)
// expectOnSave(topic, "");
// todo: more tests re saving deletes from REs marked as incoming relationships
}

Example 3 with Forum

use of org.neo4j.ogm.domain.forum.Forum 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 4 with Forum

use of org.neo4j.ogm.domain.forum.Forum 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 5 with Forum

use of org.neo4j.ogm.domain.forum.Forum 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);
}