org.neo4j.graphdb.Relationship.setProperty()方法的使用及代码示例

x33g5p2x  于2022-01-28 转载在 其他  
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本文整理了Java中org.neo4j.graphdb.Relationship.setProperty方法的一些代码示例，展示了Relationship.setProperty的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Relationship.setProperty方法的具体详情如下：
包路径：org.neo4j.graphdb.Relationship
类名称：Relationship
方法名：setProperty

Relationship.setProperty介绍

暂无

代码示例

代码示例来源：origin: neo4j/neo4j

private void createRelationshipsBetweenNodes( Node source, Node sink,
                         int numberOfRelationships )
  {
    for ( int i = 0; i < numberOfRelationships; i++ )
    {
      source.createRelationshipTo( sink, RelationshipType.withName( "Type" + (i % 4) ) )
          .setProperty( "" + i, i );

    }
  }
}

代码示例来源：origin: neo4j/neo4j

public Relationship makeEdge( String node1, String node2, Map<String, Object> edgeProperties )
{
  Node n1 = getNode( node1, true );
  Node n2 = getNode( node2, true );
  Relationship relationship = n1
    .createRelationshipTo( n2, currentRelType );
  for ( Map.Entry<String, Object> property : edgeProperties.entrySet() )
  {
    relationship.setProperty( property.getKey(), property.getValue() );
  }
  edges.add( relationship );
  return relationship;
}

代码示例来源：origin: neo4j/neo4j

private void createRelationshipsOnNode( GraphDatabaseService db, Node root, int numberOfRelationships )
{
  for ( int i = 0; i < numberOfRelationships; i++ )
  {
    root.createRelationshipTo( db.createNode(), RelationshipType.withName( "Type" + (i % 4) ) )
        .setProperty( "" + i, i );
  }
}

代码示例来源：origin: neo4j/neo4j

private void createAlistairAndStefanNodes()
{
  try ( Transaction tx = graphDb.beginTx() )
  {
    alistair = graphDb.createNode( label );
    alistair.setProperty( "name", "Alistair" );
    alistair.setProperty( "country", "UK" );
    stefan = graphDb.createNode( label );
    stefan.setProperty( "name", "Stefan" );
    stefan.setProperty( "country", "Deutschland" );
    aKnowsS = alistair.createRelationshipTo( stefan, relationshipType );
    aKnowsS.setProperty( "duration", "long" );
    aKnowsS.setProperty( "irrelevant", "prop" );
    sKnowsA = stefan.createRelationshipTo( alistair, relationshipType );
    sKnowsA.setProperty( "duration", "lengthy" );
    sKnowsA.setProperty( "irrelevant", "prop" );
    tx.success();
  }
}

代码示例来源：origin: neo4j/neo4j

long createRelationshipWithProperty( long firstNodeId, long secondNodeId, String propertyKey, Object propertyValue )
{
  Node first = db.getNodeById( firstNodeId );
  Node second = db.getNodeById( secondNodeId );
  Relationship relationship = first.createRelationshipTo( second, RELTYPE );
  relationship.setProperty( propertyKey, propertyValue );
  return relationship.getId();
}

代码示例来源：origin: neo4j/neo4j

private Relationship createRelationshipAssumingTxWith( String key, Object value )
  {
    Node a = db.createNode();
    Node b = db.createNode();
    Relationship relationship = a.createRelationshipTo( b, RelationshipType.withName( "FOO" ) );
    relationship.setProperty( key, value );
    return relationship;
  }
}

代码示例来源：origin: neo4j/neo4j

private long createRelationship( Map<String,Object> properties, RelationshipType relType, long fromNode, long toNode )
{
  try ( org.neo4j.graphdb.Transaction tx = db.beginTx() )
  {
    Node node1 = db.getNodeById( fromNode );
    Node node2 = db.getNodeById( toNode );
    Relationship relationship = node1.createRelationshipTo( node2, relType );
    for ( Map.Entry<String,Object> property : properties.entrySet() )
    {
      relationship.setProperty( property.getKey(), property.getValue() );
    }
    tx.success();
    return relationship.getId();
  }
}

代码示例来源：origin: neo4j/neo4j

@Test
public void testEscapingOfRelationshipStringPropertyValue()
{
  Node n = gdb.createNode();
  final Relationship rel = n.createRelationshipTo( n, RelationshipType.withName( "REL" ) );
  rel.setProperty( "name", "Brutus \"Brutal\" Howell" );
  final ExecutionResult result = result( "rel", rel );
  final SubGraph graph = CypherResultSubGraph.from( result, gdb, true );
  assertEquals( "create (_0)" + lineSeparator() +
      "create (_0)-[:`REL` {`name`:\"Brutus \\\"Brutal\\\" Howell\"}]->(_0)" + lineSeparator() + ";" +
      lineSeparator(), doExportGraph( graph ) );
}

代码示例来源：origin: neo4j/neo4j

@Test
public void testEscapingOfRelationshipStringArrayPropertyValue()
{
  Node n = gdb.createNode();
  final Relationship rel = n.createRelationshipTo( n, RelationshipType.withName( "REL" ) );
  rel.setProperty( "name", new String[]{"Brutus \"Brutal\" Howell", "Dr."} );
  final ExecutionResult result = result( "rel", rel );
  final SubGraph graph = CypherResultSubGraph.from( result, gdb, true );
  assertEquals( "create (_0)" + lineSeparator() +
      "create (_0)-[:`REL` {`name`:[\"Brutus \\\"Brutal\\\" Howell\", \"Dr.\"]}]->(_0)" + lineSeparator() + ";" +
          lineSeparator(),
      doExportGraph( graph ) );
}

代码示例来源：origin: neo4j/neo4j

@Test
public void testChangeProperty()
{
  Node node1 = getGraphDb().createNode();
  Node node2 = getGraphDb().createNode();
  Relationship rel = node1.createRelationshipTo( node2, TEST );
  rel.setProperty( "test", "test1" );
  newTransaction();
  rel.setProperty( "test", "test2" );
  rel.removeProperty( "test" );
  rel.setProperty( "test", "test3" );
  assertEquals( "test3", rel.getProperty( "test" ) );
  rel.removeProperty( "test" );
  rel.setProperty( "test", "test4" );
  newTransaction();
  assertEquals( "test4", rel.getProperty( "test" ) );
}

代码示例来源：origin: neo4j/neo4j

@Before
public void prepDB()
{
  try ( Transaction transaction = db.beginTx() )
  {
    node1 = db.createNode( label( "hej" ), label( "ha" ), label( "he" ) );
    node1.setProperty( "hej", "value" );
    node1.setProperty( "ha", "value1" );
    node1.setProperty( "he", "value2" );
    node1.setProperty( "ho", "value3" );
    node1.setProperty( "hi", "value4" );
    node2 = db.createNode();
    Relationship rel = node1.createRelationshipTo( node2, RelationshipType.withName( "hej" ) );
    rel.setProperty( "hej", "valuuu" );
    rel.setProperty( "ha", "value1" );
    rel.setProperty( "he", "value2" );
    rel.setProperty( "ho", "value3" );
    rel.setProperty( "hi", "value4" );
    transaction.success();
  }
}

代码示例来源：origin: neo4j/neo4j

@Test
public void testAddPropertyThenDelete()
{
  Node node1 = getGraphDb().createNode();
  Node node2 = getGraphDb().createNode();
  Relationship rel = node1.createRelationshipTo( node2, TEST );
  rel.setProperty( "test", "test" );
  newTransaction();
  rel.setProperty( "test2", "test2" );
  rel.delete();
  node1.delete();
  node2.delete();
  newTransaction();
}

代码示例来源：origin: neo4j/neo4j

@Test
public void shouldBeAbleToForceTypeChangeOfProperty()
{
  // Given
  Relationship relationship;
  try ( Transaction tx = db.beginTx() )
  {
    relationship = db.createNode().createRelationshipTo( db.createNode(), withName( "R" ) );
    relationship.setProperty( "prop", 1337 );
    tx.success();
  }
  // When
  try ( Transaction tx = db.beginTx() )
  {
    relationship.setProperty( "prop", 1337.0 );
    tx.success();
  }
  // Then
  try ( Transaction ignore = db.beginTx() )
  {
    assertThat( relationship.getProperty( "prop" ), instanceOf( Double.class ) );
  }
}

代码示例来源：origin: neo4j/neo4j

@Test
  public void testFromSimpleGraph()
  {
    final Node n0 = gdb.createNode();

    final Node n1 = gdb.createNode();
    n1.setProperty( "name", "Node1" );
    final Relationship relationship = n0.createRelationshipTo( n1, RelationshipType.withName( "REL" ) );
    relationship.setProperty( "related", true );
    final SubGraph graph = DatabaseSubGraph.from( gdb );
    assertEquals( "create (_" + n0.getId() + ")" + lineSeparator() +
        "create (_" + n1.getId() + " {`name`:\"Node1\"})" + lineSeparator() +
        "create (_" + n0.getId() + ")-[:`REL` {`related`:true}]->(_" + n1.getId() + ")" +
          lineSeparator() + ";" + lineSeparator(), doExportGraph( graph ) );
  }
}

代码示例来源：origin: neo4j/neo4j

@Test
public void testRelationshipAddPropertyWithNullKey()
{
  Node node1 = getGraphDb().createNode();
  Node node2 = getGraphDb().createNode();
  Relationship rel1 = node1.createRelationshipTo( node2, TEST );
  try
  {
    rel1.setProperty( null, "bar" );
    fail( "Null key should result in exception." );
  }
  catch ( IllegalArgumentException e )
  {   // OK
  }
}

代码示例来源：origin: neo4j/neo4j

@Test
public void mustBeAbleToConsistencyCheckRelationshipIndexWithMultipleRelationshipTypesAndOneProperty() throws Exception
{
  GraphDatabaseService db = createDatabase();
  RelationshipType relType1 = RelationshipType.withName( "R1" );
  RelationshipType relType2 = RelationshipType.withName( "R2" );
  try ( Transaction tx = db.beginTx() )
  {
    db.execute( format( RELATIONSHIP_CREATE, "rels", array( "R1", "R2" ), array( "p1" ) ) ).close();
    tx.success();
  }
  try ( Transaction tx = db.beginTx() )
  {
    db.schema().awaitIndexesOnline( 1, TimeUnit.MINUTES );
    Node n1 = db.createNode();
    Node n2 = db.createNode();
    n1.createRelationshipTo( n1, relType1 ).setProperty( "p1", "value" );
    n1.createRelationshipTo( n1, relType2 ).setProperty( "p1", "value" );
    n2.createRelationshipTo( n2, relType1 ).setProperty( "p1", "value" );
    n2.createRelationshipTo( n2, relType2 ).setProperty( "p1", "value" );
    tx.success();
  }
  db.shutdown();
  assertIsConsistent( checkConsistency() );
}

代码示例来源：origin: neo4j/neo4j

@Test
public void shouldBeAbleToGetPropertiesOnRelationship() throws Exception
{
  long relationshipId;
  Map<String, Object> properties = new HashMap<>();
  properties.put( "foo", "bar" );
  properties.put( "neo", "Thomas A. Anderson" );
  properties.put( "number", 15L );
  try ( Transaction tx = database.getGraph().beginTx() )
  {
    Node startNode = database.getGraph().createNode();
    Node endNode = database.getGraph().createNode();
    Relationship relationship = startNode.createRelationshipTo( endNode,
        RelationshipType.withName( "knows" ) );
    for ( Map.Entry<String, Object> entry : properties.entrySet() )
    {
      relationship.setProperty( entry.getKey(), entry.getValue() );
    }
    relationshipId = relationship.getId();
    tx.success();
  }
  try ( Transaction transaction = graph.beginTx() )
  {
    assertEquals( properties, serialize( actions.getAllRelationshipProperties( relationshipId ) ) );
  }
}

代码示例来源：origin: neo4j/neo4j

@Before
public void createDataset()
{
  GraphDatabaseAPI db = dbr.getGraphDatabaseAPI();
  try ( Transaction tx = db.beginTx() )
  {
    node = db.createNode( label );
    node.setProperty( "short", 123 );
    node.setProperty( "long", longString( 300 ) );
    relationship = node.createRelationshipTo( db.createNode(), MyRelTypes.TEST );
    relationship.setProperty( "short", 123 );
    relationship.setProperty( "long", longString( 300 ) );
    tx.success();
  }
  logEntriesWrittenBeforeReadOperations = countLogEntries();
}

代码示例来源：origin: neo4j/neo4j

@Before
public void setup()
{
  for ( int i = 0; i < 100; i++ )
  {
    try ( Transaction tx = db.beginTx() )
    {
      Node prev = null;
      for ( int j = 0; j < 100; j++ )
      {
        Node node = db.createNode( label( "L" ) );
        if ( prev != null )
        {
          Relationship rel = prev.createRelationshipTo( node, RelationshipType.withName( "T" ) );
          rel.setProperty( "prop", i + j );
        }
        prev = node;
      }
      tx.success();
    }
  }
}

代码示例来源：origin: neo4j/neo4j

@Test
public void testRelMultiRemoveProperty()
{
  Node node1 = getGraphDb().createNode();
  Node node2 = getGraphDb().createNode();
  Relationship rel = node1.createRelationshipTo( node2, MyRelTypes.TEST );
  rel.setProperty( "key0", "0" );
  rel.setProperty( "key1", "1" );
  rel.setProperty( "key2", "2" );
  rel.setProperty( "key3", "3" );
  rel.setProperty( "key4", "4" );
  newTransaction();
  rel.removeProperty( "key3" );
  rel.removeProperty( "key2" );
  rel.removeProperty( "key3" );
  newTransaction();
  assertEquals( "0", rel.getProperty( "key0" ) );
  assertEquals( "1", rel.getProperty( "key1" ) );
  assertEquals( "4", rel.getProperty( "key4" ) );
  assertTrue( !rel.hasProperty( "key2" ) );
  assertTrue( !rel.hasProperty( "key3" ) );
  rel.delete();
  node1.delete();
  node2.delete();
}

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