public abstract class ValueNode extends BaseJsonNode
NO_NODES, NO_STRINGS| Modifier | Constructor and Description |
|---|---|
protected |
ValueNode() |
| Modifier and Type | Method and Description |
|---|---|
abstract JsonToken |
asToken()
Method that can be used for efficient type detection
when using stream abstraction for traversing nodes.
|
<T extends JsonNode> |
deepCopy()
All current value nodes are immutable, so we can just return
them as is.
|
boolean |
isValueNode()
Method that returns true for all value nodes: ones that
are not containers, and that do not represent "missing" nodes
in the path.
|
JsonNode |
path(int index)
This method is similar to
JsonNode.get(int), except
that instead of returning null if no such element exists (due
to index being out of range, or this node not being an array),
a "missing node" (node that returns true for
JsonNode.isMissingNode()) will be returned. |
JsonNode |
path(String fieldName)
This method is similar to
JsonNode.get(String), except
that instead of returning null if no such value exists (due
to this node not being an object, or object not having value
for the specified field),
a "missing node" (node that returns true for
JsonNode.isMissingNode()) will be returned. |
void |
serializeWithType(JsonGenerator jg,
SerializerProvider provider,
TypeSerializer typeSer)
Type information is needed, even if JsonNode instances are "plain" JSON,
since they may be mixed with other types.
|
String |
toString()
Note: marked as abstract to ensure all implementation
classes define it properly.
|
findParent, findParents, findPath, findValue, findValues, findValuesAsText, numberType, serialize, traverseasBoolean, asBoolean, asDouble, asDouble, asInt, asInt, asLong, asLong, asText, bigIntegerValue, binaryValue, booleanValue, canConvertToInt, canConvertToLong, decimalValue, doubleValue, elements, equals, fieldNames, fields, findParents, findValues, findValuesAsText, get, get, has, has, hasNonNull, hasNonNull, intValue, isArray, isBigDecimal, isBigInteger, isBinary, isBoolean, isContainerNode, isDouble, isFloatingPointNumber, isInt, isIntegralNumber, isLong, isMissingNode, isNull, isNumber, isObject, isPojo, isTextual, iterator, longValue, numberValue, size, textValue, with, withArraypublic <T extends JsonNode> T deepCopy()
public boolean isValueNode()
JsonNode
Note: one and only one of methods JsonNode.isValueNode(),
JsonNode.isContainerNode() and JsonNode.isMissingNode() ever
returns true for any given node.
isValueNode in class JsonNodepublic abstract JsonToken asToken()
BaseJsonNodeJsonToken that equivalent
stream event would produce (for most nodes there is just
one token but for structured/container types multiple)asToken in interface TreeNodeasToken in class BaseJsonNodepublic void serializeWithType(JsonGenerator jg, SerializerProvider provider, TypeSerializer typeSer) throws IOException, JsonProcessingException
BaseJsonNodeserializeWithType in interface JsonSerializableserializeWithType in class BaseJsonNodeIOExceptionJsonProcessingExceptionpublic JsonNode path(String fieldName)
JsonNodeJsonNode.get(String), except
that instead of returning null if no such value exists (due
to this node not being an object, or object not having value
for the specified field),
a "missing node" (node that returns true for
JsonNode.isMissingNode()) will be returned. This allows for
convenient and safe chained access via path calls.public JsonNode path(int index)
JsonNodeJsonNode.get(int), except
that instead of returning null if no such element exists (due
to index being out of range, or this node not being an array),
a "missing node" (node that returns true for
JsonNode.isMissingNode()) will be returned. This allows for
convenient and safe chained access via path calls.Copyright © 2012 FasterXML. All Rights Reserved.