org.neo4j.graphdb.Node.getProperty()方法的使用及代码示例

x33g5p2x  于2022-01-24 转载在 其他  
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本文整理了Java中org.neo4j.graphdb.Node.getProperty()方法的一些代码示例，展示了Node.getProperty()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。Node.getProperty()方法的具体详情如下：
包路径：org.neo4j.graphdb.Node
类名称：Node
方法名：getProperty

Node.getProperty介绍

暂无

代码示例

代码示例来源：origin: neo4j/neo4j

  1. private void setPropertyAndAssertIt( Node node, Object value )
  2. {
  3.   node.setProperty( "key", value );
  4.   assertEquals( value, node.getProperty( "key" ) );
  5. }

代码示例来源：origin: neo4j/neo4j

  1. @Test
  2. public void testEmptyString()
  3. {
  4.   Node node = getGraphDb().createNode();
  5.   node.setProperty( "1", 2 );
  6.   node.setProperty( "2", "" );
  7.   node.setProperty( "3", "" );
  8.   newTransaction();
  9.   assertEquals( 2, node.getProperty( "1" ) );
  10.   assertEquals( "", node.getProperty( "2" ) );
  11.   assertEquals( "", node.getProperty( "3" ) );
  12. }

代码示例来源：origin: neo4j/neo4j

  1. protected void assertPath( Path path, Node... nodes )
  2. {
  3.   int i = 0;
  4.   for ( Node node : path.nodes() )
  5.   {
  6.     assertEquals( "Wrong node " + i + " in " + getPathDef( path ),
  7.         nodes[i++].getProperty( SimpleGraphBuilder.KEY_ID ), node.getProperty( SimpleGraphBuilder.KEY_ID ) );
  8.   }
  9.   assertEquals( nodes.length, i );
  10. }

代码示例来源：origin: neo4j/neo4j

  1. @Test
  2. public void shouldNotFailSettingEmptyArrayAndOtherValuesIfEntityAlreadyHasAnEmptyArrayAsValue() throws Exception
  3. {
  4.   // Given
  5.   Node node = db.createNode();
  6.   node.setProperty( "arr", new String[]{} );
  7.   Map<String, Object> props = new HashMap<>();
  8.   props.put( "name", "bob" );
  9.   props.put( "arr", new ArrayList<String>(  ) );
  10.   // When
  11.   propSetter.setProperties( node, props );
  12.   // Then
  13.   assertThat( node.getProperty( "name" ), is("bob"));
  14.   assertThat( node.getProperty( "arr" ), is(new String[]{}));
  15. }

代码示例来源：origin: neo4j/neo4j

  1. @Test
  2. public void testPropertyStoreReferencesOnRead() throws Throwable
  3. {
  4.   // Given
  5.   GraphDatabaseAPI db = dbRule.getGraphDatabaseAPI();
  6.   // and Given the cache contains a LazyProperty
  7.   long nId = ensurePropertyIsCachedLazyProperty( db, "some" );
  8.   // When
  9.   restartNeoDataSource( db );
  10.   // Then reading the property is still possible
  11.   try ( Transaction tx = db.beginTx() )
  12.   {
  13.     db.getNodeById( nId ).getProperty( "some" );
  14.     tx.success();
  15.   }
  16. }

代码示例来源：origin: neo4j/neo4j

  1. @Test
  2. public void shouldBeAbleToMakeRepeatedCallsToSetNodePropertyWithMultiplePropertiesPerBlock() throws Exception
  3. {
  4.   File file = dbRule.databaseLayout().databaseDirectory();
  5.   BatchInserter inserter = BatchInserters.inserter( file, fileSystemRule.get() );
  6.   long nodeId = inserter.createNode( Collections.emptyMap() );
  7.   final Object finalValue1 = 87;
  8.   final Object finalValue2 = 3.14;
  9.   inserter.setNodeProperty( nodeId, "a", "some property value" );
  10.   inserter.setNodeProperty( nodeId, "a", 42 );
  11.   inserter.setNodeProperty( nodeId, "b", finalValue2 );
  12.   inserter.setNodeProperty( nodeId, "a", finalValue2 );
  13.   inserter.setNodeProperty( nodeId, "a", true );
  14.   inserter.setNodeProperty( nodeId, "a", finalValue1 );
  15.   inserter.shutdown();
  16.   GraphDatabaseService db = dbRule.getGraphDatabaseAPI();
  17.   try ( Transaction ignored = db.beginTx() )
  18.   {
  19.     assertThat( db.getNodeById( nodeId ).getProperty( "a" ), equalTo( finalValue1 ) );
  20.     assertThat( db.getNodeById( nodeId ).getProperty( "b" ), equalTo( finalValue2 ) );
  21.   }
  22.   finally
  23.   {
  24.     db.shutdown();
  25.   }
  26. }

代码示例来源：origin: neo4j/neo4j

  1. @Test
  2. public void shouldSetSingleProperty() throws Exception
  3. {
  4.   // Given
  5.   Node node = db.createNode();
  6.   // When
  7.   propSetter.setProperty( node, "name", "bob" );
  8.   // Then
  9.   assertThat( node.getProperty( "name" ), is("bob"));
  10. }

代码示例来源：origin: neo4j/neo4j

  1. private void assertOrder( Iterator<Node> itr, String... names )
  2.   {
  3.     try ( Transaction tx = beginTx() )
  4.     {
  5.       for ( String name : names )
  6.       {
  7.         Node node = itr.next();
  8.         assertEquals( "expected " + name + ", was " + node.getProperty( "name" ),
  9.             getNodeWithName( name ), node );
  10.       }
  11.       assertFalse( itr.hasNext() );
  12.       tx.success();
  13.     }
  14.   }
  15. }

代码示例来源：origin: neo4j/neo4j

  1. @Graph( value = { "I know you" }, nodes = { @NODE( name = "I", properties = { @PROP( key = "name", value = "me" ) } ) } )
  2. private void verifyIKnowYou( String type, String myName )
  3. {
  4.   try ( Transaction ignored = graphdb.beginTx() )
  5.   {
  6.     Map<String, Node> graph = data.get();
  7.     assertEquals( "Wrong graph size.", 2, graph.size() );
  8.     Node iNode = graph.get( "I" );
  9.     assertNotNull( "The node 'I' was not defined", iNode );
  10.     Node you = graph.get( "you" );
  11.     assertNotNull( "The node 'you' was not defined", you );
  12.     assertEquals( "'I' has wrong 'name'.", myName, iNode.getProperty( "name" ) );
  13.     assertEquals( "'you' has wrong 'name'.", "you",
  14.         you.getProperty( "name" ) );
  15.     Iterator<Relationship> rels = iNode.getRelationships().iterator();
  16.     assertTrue( "'I' has too few relationships", rels.hasNext() );
  17.     Relationship rel = rels.next();
  18.     assertEquals( "'I' is not related to 'you'", you, rel.getOtherNode( iNode ) );
  19.     assertEquals( "Wrong relationship type.", type, rel.getType().name() );
  20.     assertFalse( "'I' has too many relationships", rels.hasNext() );
  21.     rels = you.getRelationships().iterator();
  22.     assertTrue( "'you' has too few relationships", rels.hasNext() );
  23.     rel = rels.next();
  24.     assertEquals( "'you' is not related to 'i'", iNode, rel.getOtherNode( you ) );
  25.     assertEquals( "Wrong relationship type.", type, rel.getType().name() );
  26.     assertFalse( "'you' has too many relationships", rels.hasNext() );
  27.     assertEquals( "wrong direction", iNode, rel.getStartNode() );
  28.   }
  29. }

代码示例来源：origin: neo4j/neo4j

  1. private static void nodesWithPersonLabelHaveUniqueName( GraphDatabaseService db )
  2. {
  3.   try ( Transaction tx = db.beginTx() )
  4.   {
  5.     try ( ResourceIterator<Node> person = db.findNodes( label( "Person" ) ) )
  6.     {
  7.       Set<Object> names = new HashSet<>();
  8.       while ( person.hasNext() )
  9.       {
  10.         Object name = person.next().getProperty( "name", null );
  11.         if ( name != null )
  12.         {
  13.           assertTrue( "non-unique name: " + name, names.add( name ) );
  14.         }
  15.       }
  16.     }
  17.     tx.success();
  18.   }
  19. }

代码示例来源：origin: neo4j/neo4j

  1. private void assertProperty( long node, String propertyKey, Object value )
  2.   {
  3.     try ( org.neo4j.graphdb.Transaction ignore = graphDb.beginTx() )
  4.     {
  5.       assertThat( graphDb.getNodeById( node ).getProperty( propertyKey ), equalTo( value ) );
  6.     }
  7.   }
  8. }

代码示例来源：origin: neo4j/neo4j

  1. @Test
  2. public void testSetWithSameValue()
  3. {
  4.   Node node = getGraphDb().createNode();
  5.   node.setProperty( "rev_pos", "40000633e7ad67ff" );
  6.   assertEquals( "40000633e7ad67ff", node.getProperty( "rev_pos" ) );
  7.   newTransaction();
  8.   node.setProperty( "rev_pos", "40000633e7ad67ef" );
  9.   assertEquals( "40000633e7ad67ef", node.getProperty( "rev_pos" ) );
  10. }

代码示例来源：origin: neo4j/neo4j

  1. @Test
  2. public void shouldUseOriginalTypeWhenSettingEmptyArrayIfEntityAlreadyHasACollection() throws Exception
  3. {
  4.   // Given
  5.   Node node = db.createNode();
  6.   node.setProperty( "arr", new String[]{"a","b"} );
  7.   // When
  8.   propSetter.setProperty( node, "arr", new ArrayList<>() );
  9.   // Then
  10.   assertThat( node.getProperty( "arr" ), is(new String[]{}));
  11. }

代码示例来源：origin: neo4j/neo4j

  1. protected void assertPathDef( Path path, String... names )
  2. {
  3.   int i = 0;
  4.   for ( Node node : path.nodes() )
  5.   {
  6.     assertEquals( "Wrong node " + i + " in " + getPathDef( path ),
  7.         names[i++], node.getProperty( SimpleGraphBuilder.KEY_ID ) );
  8.   }
  9.   assertEquals( names.length, i );
  10. }

代码示例来源：origin: neo4j/neo4j

  1. @Test
  2.   public void testMaxDepthAndCustomPruneEvaluatorCombined()
  3.   {
  4.     Evaluator lessThanThreeRels =
  5.         path -> count( path.endNode().getRelationships( Direction.OUTGOING ).iterator() ) < 3 ?
  6.             Evaluation.INCLUDE_AND_PRUNE : Evaluation.INCLUDE_AND_CONTINUE;
  8.     TraversalDescription description = getGraphDb().traversalDescription().evaluator( Evaluators.all() )
  9.         .evaluator( toDepth( 1 ) ).evaluator( lessThanThreeRels );
  10.     Set<String> expectedNodes = new HashSet<>( asList( "a", "b", "c", "d", "e" ) );
  11.     try ( Transaction tx = beginTx() )
  12.     {
  13.       for ( Path position : description.traverse( node( "a" ) ) )
  14.       {
  15.         String name = (String) position.endNode().getProperty( "name" );
  16.         assertTrue( name + " shouldn't have been returned", expectedNodes.remove( name ) );
  17.       }
  18.       tx.success();
  19.     }
  20.     assertTrue( expectedNodes.isEmpty() );
  21.   }
  22. }

代码示例来源：origin: neo4j/neo4j

  1. @Test
  2. public void shouldBeAbleToMakeRepeatedCallsToSetNodeProperty() throws Exception
  3. {
  4.   File file = dbRule.databaseLayout().databaseDirectory();
  5.   BatchInserter inserter = BatchInserters.inserter( file, fileSystemRule.get() );
  6.   long nodeId = inserter.createNode( Collections.emptyMap() );
  7.   final Object finalValue = 87;
  8.   inserter.setNodeProperty( nodeId, "a", "some property value" );
  9.   inserter.setNodeProperty( nodeId, "a", 42 );
  10.   inserter.setNodeProperty( nodeId, "a", 3.14 );
  11.   inserter.setNodeProperty( nodeId, "a", true );
  12.   inserter.setNodeProperty( nodeId, "a", finalValue );
  13.   inserter.shutdown();
  14.   GraphDatabaseService db = dbRule.getGraphDatabaseAPI();
  15.   try ( Transaction ignored = db.beginTx() )
  16.   {
  17.     assertThat( db.getNodeById( nodeId ).getProperty( "a" ), equalTo( finalValue ) );
  18.   }
  19.   finally
  20.   {
  21.     db.shutdown();
  22.   }
  23. }

代码示例来源：origin: neo4j/neo4j

  1. private void testDateTypeWithPrecedingInLinedLong( Value value )
  2. {
  3.   node1.setProperty( "l1", 255 ); // Setting these low bits was triggering a bug in some date types decision on formatting
  4.   String key = "dt";
  5.   node1.setProperty( key, value );
  6.   newTransaction();
  7.   Object property = node1.getProperty( key );
  8.   assertEquals( value.asObjectCopy(), property );
  9. }

代码示例来源：origin: neo4j/neo4j

  1. private void assertNodeHasBeenUpdated( final Node commonNode ) throws Exception
  2.   {
  3.     final Collection<Exception> problems = new HashSet<>();
  5.     Thread thread = new Thread( () ->
  6.     {
  7.       try ( Transaction ignored = graphDatabaseService.beginTx() )
  8.       {
  9.         assertThat( commonNode.getProperty( PROPERTY_NAME ), is( PROPERTY_VALUE ) );
  10.       }
  11.       catch ( Throwable t )
  12.       {
  13.         problems.add( new Exception( t ) );
  14.       }
  15.     } );
  16.     thread.start();
  17.     thread.join();
  19.     if ( problems.size() > 0 )
  20.     {
  21.       throw problems.iterator().next();
  22.     }
  23.   }
  24. }

代码示例来源：origin: neo4j/neo4j

  1. @Test
  2. public void testPointTypeWithTwoOtherProperties()
  3. {
  4.   Point point = Values.pointValue( CoordinateReferenceSystem.Cartesian, 1, 1 );
  5.   String key = "location";
  6.   node1.setProperty( "prop1", 1 );
  7.   node1.setProperty( "prop2", 2 );
  8.   node1.setProperty( key, point );
  9.   newTransaction();
  10.   Object property = node1.getProperty( key );
  11.   assertEquals( point, property );
  12. }

代码示例来源：origin: neo4j/neo4j

  1. @Test
  2. public void shouldNotFailSettingEmptyArrayIfEntityAlreadyHasAnEmptyArrayAsValue() throws Exception
  3. {
  4.   // Given
  5.   Node node = db.createNode();
  6.   node.setProperty( "arr", new String[]{} );
  7.   // When
  8.   propSetter.setProperty( node, "arr", new ArrayList<>() );
  9.   // Then
  10.   assertThat( node.getProperty( "arr" ), is(new String[]{}));
  11. }

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