com.fasterxml.jackson.databind.JsonNode.elements()方法的使用及代码示例

x33g5p2x  于2022-01-21 转载在 其他  
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本文整理了Java中com.fasterxml.jackson.databind.JsonNode.elements()方法的一些代码示例，展示了JsonNode.elements()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。JsonNode.elements()方法的具体详情如下：
包路径：com.fasterxml.jackson.databind.JsonNode
类名称：JsonNode
方法名：elements

JsonNode.elements介绍

[英]Method for accessing all value nodes of this Node, iff this node is a JSON Array or Object node. In case of Object node, field names (keys) are not included, only values. For other types of nodes, returns empty iterator.
[中]方法访问此节点的所有值节点，如果此节点是JSON数组或对象节点。对于对象节点，不包括字段名（键），仅包括值。对于其他类型的节点，返回空迭代器。

代码示例

代码示例来源：origin: aws/aws-sdk-java

private static List<JmesPathExpression> getChildren(JsonNode jsonNode){
  if(jsonNode.get("children").size() < 1) {
    throw new RuntimeException("Expected one or more arguments");
  }
  Iterator<JsonNode> children = jsonNode.get("children").elements();
  final List<JmesPathExpression> childrenList = new ArrayList<>();
  while (children.hasNext()) {
    childrenList.add(fromAstJsonToAstJava(children.next()));
  }
  return childrenList;
}

代码示例来源：origin: stagemonitor/stagemonitor

@Test
public void reportSpan() throws Exception {
  reporter.report(mock(SpanContextInformation.class), getSpan(100));
  elasticsearchClient.waitForCompletion();
  refresh();
  final JsonNode hits = elasticsearchClient.getJson("/stagemonitor-spans*/_search").get("hits");
  assertThat(hits.get("total").intValue()).as(hits.toString()).isEqualTo(1);
  final JsonNode spanJson = hits.get("hits").elements().next().get("_source");
  assertThat(spanJson.get("type").asText()).as(spanJson.toString()).isEqualTo("jdbc");
  assertThat(spanJson.get("method").asText()).as(spanJson.toString()).isEqualTo("SELECT");
  assertThat(spanJson.get("db.statement")).as(spanJson.toString()).isNotNull();
  assertThat(spanJson.get("db.statement").asText()).as(spanJson.toString()).isEqualTo("SELECT * from STAGEMONITOR where 1 < 2");
  assertThat(spanJson.get("duration_ms").asInt()).as(spanJson.toString()).isEqualTo(100);
  assertThat(spanJson.get("name").asText()).as(spanJson.toString()).isEqualTo("ElasticsearchExternalSpanReporterIntegrationTest#test");
}

代码示例来源：origin: org.jasig.portal/uPortal-groups-pags

@Override
  public Set<IPersonAttributesGroupDefinition> deserialize(
      JsonParser jsonParser, DeserializationContext ctx)
      throws JsonProcessingException, IOException {
    ObjectCodec oc = jsonParser.getCodec();
    JsonNode node = oc.readTree(jsonParser);
    // For now, we'll only support deserializing PAGS definitions WITHOUT members...
    if (node.elements().hasNext()) {
      throw new UnsupportedOperationException("Members not yet supported");
    }
    return Collections.emptySet();
  }
}

代码示例来源：origin: Alluxio/alluxio

/**
  * Deserialize an AccessControlList object.
  * @param jsonParser the json parser
  * @param deserializationContext deserializationcontext
  * @return
  * @throws IOException
  * @throws JsonProcessingException
  */
 @Override
 public AccessControlList deserialize(JsonParser jsonParser,
   DeserializationContext deserializationContext) throws IOException, JsonProcessingException {
  JsonNode node = jsonParser.getCodec().readTree(jsonParser);
  String owner = node.get(OWNER_FIELD).asText();
  String owningGroup = node.get(OWNING_GROUP_FIELD).asText();
  List<String> stringEntries = new ArrayList<>();
  Iterator<JsonNode> nodeIterator = node.get(STRING_ENTRY_FIELD).elements();
  while (nodeIterator.hasNext()) {
   stringEntries.add(nodeIterator.next().asText());
  }
  return AccessControlList.fromStringEntries(owner, owningGroup, stringEntries);
 }
}

代码示例来源：origin: stagemonitor/stagemonitor

@Test
public void testUpdateSpan() throws Exception {
  final Span span = tracer.buildSpan("Test#test")
      .withTag(Tags.SPAN_KIND.getKey(), Tags.SPAN_KIND_SERVER)
      .start();
  span.finish();
  elasticsearchClient.waitForCompletion();
  refresh();
  reporter.updateSpan(B3HeaderFormat.getB3Identifiers(tracer, span), null, Collections.singletonMap("foo", "bar"));
  refresh();
  final JsonNode hits = elasticsearchClient.getJson("/stagemonitor-spans*/_search").get("hits");
  assertThat(hits.get("total").intValue()).as(hits.toString()).isEqualTo(1);
  final JsonNode spanJson = hits.get("hits").elements().next().get("_source");
  assertThat(spanJson.get("foo").asText()).as(spanJson.toString()).isEqualTo("bar");
}

代码示例来源：origin: Jasig/uPortal

@Override
  public Set<IPersonAttributesGroupDefinition> deserialize(
      JsonParser jsonParser, DeserializationContext ctx)
      throws JsonProcessingException, IOException {
    ObjectCodec oc = jsonParser.getCodec();
    JsonNode node = oc.readTree(jsonParser);
    // For now, we'll only support deserializing PAGS definitions WITHOUT members...
    if (node.elements().hasNext()) {
      throw new UnsupportedOperationException("Members not yet supported");
    }
    return Collections.emptySet();
  }
}

代码示例来源：origin: liferay/liferay-portal

public List<String> getCurrentObject() throws NoSuchElementException {
  JsonNode resourceJsonNode = _inputRecordsJsonNode.get(
    _inputRecordsIndex);
  if (resourceJsonNode == null) {
    _log.error("Index: {}", _inputRecordsIndex);
    throw new NoSuchElementException("Index: " + _inputRecordsIndex);
  }
  List<String> resourceValues = new ArrayList<>();
  Iterator<JsonNode> iterator = resourceJsonNode.elements();
  while (iterator.hasNext()) {
    JsonNode jsonNode = iterator.next();
    resourceValues.add(jsonNode.toString());
  }
  if (_log.isDebugEnabled()) {
    _log.debug("Resource has been processed");
  }
  return resourceValues;
}

代码示例来源：origin: stagemonitor/stagemonitor

@Test
public void testUpdateNotYetExistentSpan_eventuallyUpdates() throws Exception {
  final Span span = tracer.buildSpan("Test#test")
      .withTag(Tags.SPAN_KIND.getKey(), Tags.SPAN_KIND_SERVER)
      .start();
  reporter.updateSpan(B3HeaderFormat.getB3Identifiers(tracer, span), null, Collections.singletonMap("foo", "bar"));
  span.finish();
  elasticsearchClient.waitForCompletion();
  refresh();
  reporter.getUpdateReporter().flush();
  refresh();
  final JsonNode hits = elasticsearchClient.getJson("/stagemonitor-spans*/_search").get("hits");
  assertThat(hits.get("total").intValue()).as(hits.toString()).isEqualTo(1);
  final JsonNode spanJson = hits.get("hits").elements().next().get("_source");
  assertThat(spanJson.get("foo").asText()).as(spanJson.toString()).isEqualTo("bar");
}

代码示例来源：origin: aws/aws-sdk-java

/**
 * If subject is an array, this function returns true if
 * one of the elements in the array is equal to the provided search
 * value.
 *
 * @param subject Array
 * @param search  JmesPath expression
 * @return True array contains search;
 * False otherwise
 */
private static BooleanNode doesArrayContain(JsonNode subject, JsonNode search) {
  Iterator<JsonNode> elements = subject.elements();
  while (elements.hasNext()) {
    if (elements.next().equals(search)) {
      return BooleanNode.TRUE;
    }
  }
  return BooleanNode.FALSE;
}

代码示例来源：origin: stagemonitor/stagemonitor

@Test
public void reportSpan() throws Exception {
  final Map<String, String> parameters = new HashMap<>();
  parameters.put("attr.Color", "Blue");
  parameters.put("attr", "bla");
  parameters.put("foo", "bar");
  final Span span = tracer.buildSpan("Test#test")
      .withTag(Tags.SPAN_KIND.getKey(), Tags.SPAN_KIND_SERVER)
      .start();
  SpanUtils.setParameters(span, parameters);
  span.setTag(SpanUtils.OPERATION_TYPE, "method_invocation");
  span.setTag("foo.bar", "baz");
  span.finish();
  elasticsearchClient.waitForCompletion();
  refresh();
  final JsonNode hits = elasticsearchClient.getJson("/stagemonitor-spans*/_search").get("hits");
  assertThat(hits.get("total").intValue()).as(hits.toString()).isEqualTo(1);
  validateSpanJson(hits.get("hits").elements().next().get("_source"));
}

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

@Override
  public Binds deserialize(JsonParser jsonParser, DeserializationContext deserializationContext)
      throws IOException, JsonProcessingException {
    List<Bind> binds = new ArrayList<Bind>();
    ObjectCodec oc = jsonParser.getCodec();
    JsonNode node = oc.readTree(jsonParser);
    for (Iterator<JsonNode> it = node.elements(); it.hasNext();) {
      JsonNode field = it.next();
      binds.add(Bind.parse(field.asText()));
    }
    return new Binds(binds.toArray(new Bind[0]));
  }
}

代码示例来源：origin: org.apache.drill.exec/drill-java-exec

@Override
 public DynamicPojoRecordReader convert(JsonNode value) {
  LinkedHashMap<String, Class<?>> schema = mapper.convertValue(value.get("schema"), schemaType);
  ArrayList records = new ArrayList(schema.size());
  final Iterator<JsonNode> recordsIterator = value.get("records").get(0).elements();
  for (Class<?> fieldType : schema.values()) {
   records.add(mapper.convertValue(recordsIterator.next(), fieldType));
  }
  int maxRecordsToRead = value.get("recordsPerBatch").asInt();
  return new DynamicPojoRecordReader(schema, Collections.singletonList(records), maxRecordsToRead);
 }
}

代码示例来源：origin: prestodb/presto

@Override
public RangeBoundValue deserialize(JsonParser jp, DeserializationContext ctxt)
    throws IOException
{
  JsonNode node = jp.getCodec().readTree(jp);
  if (node.isNull()) {
    return null;
  }
  else {
    List<Object> list;
    if (node.isArray()) {
      list = new ArrayList<>();
      Iterator<JsonNode> iter = node.elements();
      while (iter.hasNext()) {
        Object v = toValue(iter.next());
        list.add(v);
      }
    }
    else {
      Object v = toValue(node);
      list = ImmutableList.of(v);
    }
    return new RangeBoundValue(list);
  }
}

代码示例来源：origin: liferay/liferay-portal

public static boolean hasValueOf(String value, JsonNode jsonNode) {
  if (jsonNode.isArray()) {
    Iterator<JsonNode> iterator = jsonNode.elements();
    while (iterator.hasNext()) {
      JsonNode entryJsonNode = iterator.next();
      String entry = entryJsonNode.asText();
      if (entry.equals(value)) {
        return true;
      }
    }
  }
  else if (jsonNode.isValueNode()) {
    String entry = jsonNode.asText();
    if (entry.equals(value)) {
      return true;
    }
  }
  return false;
}

代码示例来源：origin: joelittlejohn/jsonschema2pojo

private Map<String, JFieldVar> removeFieldsExcludedFromEqualsAndHashCode(Map<String, JFieldVar> fields, JsonNode node) {
  Map<String, JFieldVar> filteredFields = new HashMap<>(fields);
  JsonNode properties = node.get("properties");
  if (properties != null) {
    if (node.has("excludedFromEqualsAndHashCode")) {
      JsonNode excludedArray = node.get("excludedFromEqualsAndHashCode");
      for (Iterator<JsonNode> iterator = excludedArray.elements(); iterator.hasNext(); ) {
        String excludedPropertyName = iterator.next().asText();
        JsonNode excludedPropertyNode = properties.get(excludedPropertyName);
        filteredFields.remove(ruleFactory.getNameHelper().getPropertyName(excludedPropertyName, excludedPropertyNode));
      }
    }
    for (Iterator<Map.Entry<String, JsonNode>> iterator = properties.fields(); iterator.hasNext(); ) {
      Map.Entry<String, JsonNode> entry = iterator.next();
      String propertyName = entry.getKey();
      JsonNode propertyNode = entry.getValue();
      if (propertyNode.has("excludedFromEqualsAndHashCode") &&
          propertyNode.get("excludedFromEqualsAndHashCode").asBoolean()) {
        filteredFields.remove(ruleFactory.getNameHelper().getPropertyName(propertyName, propertyNode));
      }
    }
  }
  return filteredFields;
}

代码示例来源：origin: aws/aws-sdk-java

Entry<String, JsonNode> principal;
Iterator<JsonNode> elements;
while (mapOfPrincipals.hasNext()) {
  principal = mapOfPrincipals.next();
  schema = principal.getKey();
  principalNode = principal.getValue();
    elements = principalNode.elements();
    while (elements.hasNext()) {
      principals.add(createPrincipal(schema, elements.next()));

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

@Override
  public Links deserialize(final JsonParser jsonParser, final DeserializationContext deserializationContext)
      throws IOException, JsonProcessingException {
    final List<Link> binds = new ArrayList<Link>();
    final ObjectCodec oc = jsonParser.getCodec();
    final JsonNode node = oc.readTree(jsonParser);
    for (final Iterator<JsonNode> it = node.elements(); it.hasNext();) {
      final JsonNode element = it.next();
      if (!element.equals(NullNode.getInstance())) {
        binds.add(Link.parse(element.asText()));
      }
    }
    return new Links(binds.toArray(new Link[0]));
  }
}

代码示例来源：origin: SeldonIO/seldon-server

Iterator<JsonNode> iter = prediction.get("predictions").elements();
double bestScore = 0;
String bestClass = null;
while (iter.hasNext())
  JsonNode jPred = iter.next();
  double score = jPred.get("prediction").asDouble();
  String predClass = jPred.get("predictedClass").asText();

代码示例来源：origin: spring-projects/spring-data-redis

private void flattenElement(String propertyPrefix, Object source, Map<String, Object> resultMap) {
  if (!(source instanceof JsonNode)) {
    resultMap.put(propertyPrefix, source);
    return;
  }
  JsonNode element = (JsonNode) source;
  if (element.isArray()) {
    Iterator<JsonNode> nodes = element.elements();
    while (nodes.hasNext()) {
      JsonNode cur = nodes.next();
      if (cur.isArray()) {
        this.falttenCollection(propertyPrefix, cur.elements(), resultMap);
      }
    }
  } else if (element.isContainerNode()) {
    this.doFlatten(propertyPrefix, element.fields(), resultMap);
  } else {
    resultMap.put(propertyPrefix, new DirectFieldAccessFallbackBeanWrapper(element).getPropertyValue("_value"));
  }
}

代码示例来源：origin: apache/incubator-pinot

private static void removeValue(JsonNode jsonArray, String value) {
  Iterator<JsonNode> elements = jsonArray.elements();
  while (elements.hasNext()) {
   if (elements.next().asText().equals(value)) {
    elements.remove();
    return;
   }
  }
 }
}

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