org.neo4j.driver.v1.Record类的使用及代码示例

x33g5p2x  于2022-01-29 转载在 其他  
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本文整理了Java中org.neo4j.driver.v1.Record类的一些代码示例，展示了Record类的具体用法。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。Record类的具体详情如下：
包路径：org.neo4j.driver.v1.Record
类名称：Record

Record介绍

[英]Container for Cypher result values.

Streams of records are returned from Cypher statement execution, contained within a StatementResult.

A record is a form of ordered map and, as such, contained values can be accessed by either positional #get(int) or textual #get(String).
[中]Cypher结果值的容器。
Cypher语句执行返回的记录流包含在StatementResult中。
记录是有序映射的一种形式，因此，包含的值可以通过位置#get（int）或文本#get（String）访问。

代码示例

代码示例来源：origin: neo4j/neo4j

@Test
public void calls_simplistic_procedure()
{
  try ( Driver driver = GraphDatabase.driver( graphDb.boltURI(), configuration() );
      Session session = driver.session() )
  {
    StatementResult result = session.run( "CALL " + procedureNamespace + ".theAnswer()" );
    assertThat( result.single().get( "value" ).asLong() ).isEqualTo( 42L );
  }
}

代码示例来源：origin: neo4j-contrib/neo4j-apoc-procedures

private Stream<RowResult> getRowResultStream(boolean virtual, Session session, Map<String, Object> params, String statement, boolean read) {
  Map<Long, Object> nodesCache = new HashMap<>();
  return StreamSupport.stream(Spliterators.spliteratorUnknownSize(runStatement(statement, session, params, read), 0), true)
      .map(record -> new RowResult(record.asMap(value -> {
        Object entity = value.asObject();
        if (entity instanceof Node) return toNode(entity, virtual, nodesCache);
        if (entity instanceof Relationship) return toRelationship(entity, virtual, nodesCache);
        if (entity instanceof Path) return toPath(entity, virtual, nodesCache);
        return entity;
      })));
}

代码示例来源：origin: neo4j/cypher-shell

recordMap.put("node", nodeVal);
List<String> keys = asList("rel", "node");
when(record.keys()).thenReturn(keys);
when(record.get(eq("rel"))).thenReturn(relVal);
when(record.get(eq("node"))).thenReturn(nodeVal);
when(record.<Value>asMap(anyObject())).thenReturn(recordMap);
when(record.values()).thenReturn(asList(relVal, nodeVal));

代码示例来源：origin: org.neo4j.driver/neo4j-java-driver

public static <T> Map<String, T> map( Record record, Function<Value, T> mapFunction )
{
  int size = record.size();
  switch ( size )
  {
    case 0:
      return emptyMap();
    case 1:
      return singletonMap( record.keys().get( 0 ), mapFunction.apply( record.get( 0 ) ) );
    default:
      Map<String,T> map = Iterables.newLinkedHashMapWithSize( size );
      List<String> keys = record.keys();
      for ( int i = 0; i < size; i++ )
      {
        map.put( keys.get( i ), mapFunction.apply( record.get( i ) ) );
      }
      return unmodifiableMap( map );
  }
}

代码示例来源：origin: org.neo4j.driver/neo4j-java-driver

public static <V> List<Pair<String, V>> fields( final Record map, final Function<Value, V> mapFunction )
{
  int size = map.keys().size();
  switch ( size )
  {
    case 0:
      return emptyList();
    case 1:
    {
      String key = map.keys().iterator().next();
      Value value = map.get( key );
      return singletonList( InternalPair.of( key, mapFunction.apply( value ) ) );
    }
    default:
    {
      List<Pair<String, V>> list = new ArrayList<>( size );
      List<String> keys = map.keys();
      for ( int i = 0; i < size; i++ )
      {
        String key = keys.get( i );
        Value value = map.get( i );
        list.add( InternalPair.of( key, mapFunction.apply( value ) ) );
      }
      return unmodifiableList( list );
    }
  }
}

代码示例来源：origin: neo4j/cypher-shell

private void checkMapForPrettyPrint(Map<String, String> map, String expectedResult) {
  // given
  BoltResult result = mock(BoltResult.class);
  Record record = mock(Record.class);
  Value value = mock(Value.class);
  when(value.type()).thenReturn(InternalTypeSystem.TYPE_SYSTEM.MAP());
  when(value.asMap((Function<Value, String>) anyObject())).thenReturn(map);
  when(record.keys()).thenReturn(asList("map"));
  when(record.values()).thenReturn(asList(value));
  when(result.getRecords()).thenReturn(asList(record));
  when(result.getSummary()).thenReturn(mock(ResultSummary.class));
  // when
  String actual = plainPrinter.format(result);
  // then
  assertThat(actual, is(expectedResult));
}

代码示例来源：origin: net.iot-solutions.graphdb/jcypher

@Override
public List<String> getColumns() {
  List<String> columns = new ArrayList<String>();
  if (this.records.size() > 0) {
    Record rec = this.records.get(0);
    columns.addAll(rec.keys());
  }
  return columns;
}

代码示例来源：origin: neo4j/cypher-shell

@Nonnull
private String formatRecord(@Nonnull final Record record) {
  return record.values().stream().map(this::formatValue).collect(Collectors.joining(COMMA_SEPARATOR));
}

代码示例来源：origin: net.iot-solutions.graphdb/jcypher

private Entity getPropertiesObject(long id, int rowIndex, ElemType typ) {
  Record rec = this.records.get(rowIndex);
  List<Pair<String, Value>> flds = rec.fields();
  for (Pair<String, Value> pair : flds) {
    if (typ == ElemType.NODE && pair.value() instanceof NodeValue) {
      Node nd = pair.value().asNode();
      if (nd.id() == id)
        return nd;
    } else if (typ == ElemType.RELATION && pair.value() instanceof RelationshipValue) {
      Relationship rel = pair.value().asRelationship();
      if (rel.id() == id)
        return rel;
    }
  }
  
  // element with id may not have been loaded
  return this.reloaded.getEntity(id, typ);
}

代码示例来源：origin: org.neo4j.driver/neo4j-java-driver

if ( ! ( size == otherRecord.size() ) )
if ( ! keys.equals( otherRecord.keys() ) )
  Value otherValue = otherRecord.get( i );
  if ( ! value.equals( otherValue ) )

代码示例来源：origin: neo4j/cypher-shell

@Test
public void prettyPrintList() throws Exception {
  // given
  BoltResult result = mock(BoltResult.class);
  Record record1 = mock(Record.class);
  Record record2 = mock(Record.class);
  Value value1 = mock(Value.class);
  Value value2 = mock(Value.class);
  when(value1.type()).thenReturn(InternalTypeSystem.TYPE_SYSTEM.LIST());
  when(value2.type()).thenReturn(InternalTypeSystem.TYPE_SYSTEM.LIST());
  when(value1.asList(Matchers.any(Function.class))).thenReturn(asList("val1_1", "val1_2"));
  when(value2.asList(Matchers.any(Function.class))).thenReturn(asList("val2_1"));
  when(record1.keys()).thenReturn(asList("col1", "col2"));
  when(record1.values()).thenReturn(asList(value1, value2));
  when(record2.values()).thenReturn(asList(value2));
  when(result.getRecords()).thenReturn(asList(record1, record2));
  when(result.getSummary()).thenReturn(mock(ResultSummary.class));
  // when
  String actual = plainPrinter.format(result);
  // then
  assertThat(actual, is("col1, col2\n[val1_1, val1_2], [val2_1]\n[val2_1]"));
}

代码示例来源：origin: Wolfgang-Schuetzelhofer/jcypher

@Override
public List<String> getColumns() {
  List<String> columns = new ArrayList<String>();
  if (this.records.size() > 0) {
    Record rec = this.records.get(0);
    columns.addAll(rec.keys());
  }
  return columns;
}

代码示例来源：origin: h-omer/neo4j-versioner-core

@Test public void shouldDiffGetTheDiffBetweenTwoStatesCorrectly() {
  // This is in a try-block, to make sure we close the driver after the test
  try (Driver driver = GraphDatabase.driver(neo4j.boltURI(), Config.build().withEncryption().toConfig()); Session session = driver.session()) {
    // Given
    session.run("CREATE (s:State:From {keep:'keep', update:'old', delete:'delete'})");
    session.run("CREATE (s:State:To {keep:'keep', update:'new', new:'new'})");
    // When
    StatementResult result = session
        .run("MATCH (stateTo:State:To), (stateFrom:State:From) WITH stateFrom, stateTo CALL graph.versioner.diff(stateFrom, stateTo) YIELD operation, label, oldValue, newValue RETURN operation, label, oldValue, newValue");
    // Then
    assertThat(result.next().values().stream().map(Value::asString).collect(Collectors.toList()), contains(Utility.DIFF_OPERATION_REMOVE, "delete", "delete", "null"));
    assertThat(result.next().values().stream().map(Value::asString).collect(Collectors.toList()), contains(Utility.DIFF_OPERATION_UPDATE, "update", "old", "new"));
    assertThat(result.next().values().stream().map(Value::asString).collect(Collectors.toList()), contains(Utility.DIFF_OPERATION_ADD, "new", "null", "new"));
    assertThat(result.hasNext(), is(false));
  }
}

代码示例来源：origin: Wolfgang-Schuetzelhofer/jcypher

private Entity getPropertiesObject(long id, int rowIndex, ElemType typ) {
  Record rec = this.records.get(rowIndex);
  List<Pair<String, Value>> flds = rec.fields();
  for (Pair<String, Value> pair : flds) {
    if (typ == ElemType.NODE && pair.value() instanceof NodeValue) {
      Node nd = pair.value().asNode();
      if (nd.id() == id)
        return nd;
    } else if (typ == ElemType.RELATION && pair.value() instanceof RelationshipValue) {
      Relationship rel = pair.value().asRelationship();
      if (rel.id() == id)
        return rel;
    }
  }
  
  // element with id may not have been loaded
  return this.reloaded.getEntity(id, typ);
}

代码示例来源：origin: testcontainers/testcontainers-java

@Test
public void shouldStart() {
  boolean actual = neo4jContainer.isRunning();
  assertThat(actual).isTrue();
  try (Driver driver = GraphDatabase
    .driver(neo4jContainer.getBoltUrl(), AuthTokens.basic("neo4j", "password"));
    Session session = driver.session()
  ) {
    long one = session.run("RETURN 1", Collections.emptyMap()).next().get(0).asLong();
    assertThat(one).isEqualTo(1L);
  } catch (Exception e) {
    fail(e.getMessage());
  }
}

代码示例来源：origin: neo4j/neo4j-ogm

private Map<String, Object> buildModel() {
  Map<String, Object> row = new LinkedHashMap<>();
  if (resultProjection.hasNext()) {
    row = restModelAdapter.adapt(resultProjection.next().asMap());
  }
  return row;
}

代码示例来源：origin: neo4j/cypher-shell

@Test
public void prettyPrintRelationships() throws Exception {
  // given
  BoltResult result = mock(BoltResult.class);
  Record record = mock(Record.class);
  Value value = mock(Value.class);
  Relationship relationship = mock(Relationship.class);
  HashMap<String, Object> propertiesAsMap = new HashMap<>();
  propertiesAsMap.put("prop1", "prop1_value");
  propertiesAsMap.put("prop2", "prop2_value");
  when(value.type()).thenReturn(InternalTypeSystem.TYPE_SYSTEM.RELATIONSHIP());
  when(value.asRelationship()).thenReturn(relationship);
  when(relationship.type()).thenReturn("RELATIONSHIP_TYPE");
  when(relationship.asMap(anyObject())).thenReturn(unmodifiableMap(propertiesAsMap));
  when(record.keys()).thenReturn(asList("rel"));
  when(record.values()).thenReturn(asList(value));
  when(result.getRecords()).thenReturn(asList(record));
  when(result.getSummary()).thenReturn(mock(ResultSummary.class));
  // when
  String actual = plainPrinter.format(result);
  // then
  assertThat(actual, is("rel\n[:RELATIONSHIP_TYPE {prop2: prop2_value, prop1: prop1_value}]"));
}

代码示例来源：origin: neo4j/cypher-shell

@Override
@Nonnull
public String format(@Nonnull final BoltResult result) {
  StringBuilder sb = new StringBuilder();
  List<Record> records = result.getRecords();
  if (!records.isEmpty()) {
    sb.append(records.get(0).keys().stream().collect(Collectors.joining(COMMA_SEPARATOR)));
    sb.append("\n");
    sb.append(records.stream().map(this::formatRecord).collect(Collectors.joining("\n")));
  }
  return sb.toString();
}

代码示例来源：origin: h-omer/neo4j-versioner-core

@Test public void shouldDiffGetTheDiffBetweenTwoStatesCorrectlyWithDifferentObjectTypes() {
  // This is in a try-block, to make sure we close the driver after the test
  try (Driver driver = GraphDatabase.driver(neo4j.boltURI(), Config.build().withEncryption().toConfig()); Session session = driver.session()) {
    // Given
    session.run("CREATE (s:State:From {a:1, b:1, c:'stringA', d:'string', e: [1, 2], f: [1, 2]})");
    session.run("CREATE (s:State:To {a:2, b:1, c:'stringB', d:'string', e:[1, 2], f: [1, 3]})");
    // When
    StatementResult result = session
        .run("MATCH (stateTo:State:To), (stateFrom:State:From) WITH stateFrom, stateTo CALL graph.versioner.diff(stateFrom, stateTo) YIELD operation, label, oldValue, newValue RETURN operation, label, oldValue, newValue");
    // Then
    assertThat(result.next().values().stream().map(value -> value.asObject().toString()).collect(Collectors.toList()), contains(Utility.DIFF_OPERATION_UPDATE, "a", "1", "2"));
    assertThat(result.next().values().stream().map(value -> value.asObject().toString()).collect(Collectors.toList()), contains(Utility.DIFF_OPERATION_UPDATE, "c", "stringA", "stringB"));
    assertThat(result.next().values().stream().map(value -> value.asObject().toString()).collect(Collectors.toList()), contains(Utility.DIFF_OPERATION_UPDATE, "f", "[1, 2]", "[1, 3]"));
    assertThat(result.hasNext(), is(false));
  }
}

代码示例来源：origin: graphaware/graph-aided-search

private CypherResult buildResult(StatementResult response) {
  CypherResult result = new CypherResult();
  while (response.hasNext()) {
    Record record = response.next();
    ResultRow resultRow = new ResultRow();
    for (Pair<String, Value> fieldInRecord : record.fields()) {
      resultRow.add(fieldInRecord.key(), fieldInRecord.value());
    }
    result.addRow(resultRow);
  }
  return result;
}

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