org.codehaus.jackson.node

类 ValueNode

java.lang.Object

org.codehaus.jackson.JsonNode

org.codehaus.jackson.node.BaseJsonNode

org.codehaus.jackson.node.ValueNode

所有已实现的接口:

Iterable<JsonNode>, JsonSerializable, JsonSerializableWithType

直接已知子类:

BinaryNode, BooleanNode, NullNode, NumericNode, POJONode, TextNode

public abstract class ValueNode
extends BaseJsonNode

This intermediate base class is used for all leaf nodes, that is, all non-container (array or object) nodes, except for the "missing node".

字段概要

从类继承的字段 org.codehaus.jackson.JsonNode

NO_NODES, NO_STRINGS

构造器概要

构造器

限定符	构造器和说明
protected	ValueNode()

方法概要

方法

限定符和类型	方法和说明
abstract JsonToken	asToken() Method that can be used for efficient type detection when using stream abstraction for traversing nodes.
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.

从类继承的方法 org.codehaus.jackson.node.BaseJsonNode

findParent, findParents, findPath, findValue, findValues, findValuesAsText, getNumberType, serialize, traverse

从类继承的方法 org.codehaus.jackson.JsonNode

asBoolean, asBoolean, asDouble, asDouble, asInt, asInt, asLong, asLong, asText, equals, findParents, findValues, findValuesAsText, get, get, getBigIntegerValue, getBinaryValue, getBooleanValue, getDecimalValue, getDoubleValue, getElements, getFieldNames, getFields, getIntValue, getLongValue, getNumberValue, getPath, getPath, getTextValue, getValueAsBoolean, getValueAsBoolean, getValueAsDouble, getValueAsDouble, getValueAsInt, getValueAsInt, getValueAsLong, getValueAsLong, getValueAsText, has, has, isArray, isBigDecimal, isBigInteger, isBinary, isBoolean, isContainerNode, isDouble, isFloatingPointNumber, isInt, isIntegralNumber, isLong, isMissingNode, isNull, isNumber, isObject, isPojo, isTextual, iterator, size, with

从类继承的方法 java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

构造器详细资料

ValueNode

protected ValueNode()

方法详细资料

isValueNode

public boolean isValueNode()

从类复制的说明: JsonNode

Method that returns true for all value nodes: ones that are not containers, and that do not represent "missing" nodes in the path. Such value nodes represent String, Number, Boolean and null values from JSON.

Note: one and only one of methods JsonNode.isValueNode(), JsonNode.isContainerNode() and JsonNode.isMissingNode() ever returns true for any given node.

覆盖:

isValueNode 在类中 JsonNode

asToken

public abstract JsonToken asToken()

从类复制的说明: BaseJsonNode

Method that can be used for efficient type detection when using stream abstraction for traversing nodes. Will return the first JsonToken that equivalent stream event would produce (for most nodes there is just one token but for structured/container types multiple)

指定者:

asToken 在类中 BaseJsonNode

serializeWithType

public void serializeWithType(JsonGenerator jg,
                     SerializerProvider provider,
                     TypeSerializer typeSer)
                       throws IOException,
                              JsonProcessingException

从类复制的说明: BaseJsonNode

Type information is needed, even if JsonNode instances are "plain" JSON, since they may be mixed with other types.

指定者:

serializeWithType 在接口中 JsonSerializableWithType

指定者:

serializeWithType 在类中 BaseJsonNode

抛出:

IOException

JsonProcessingException

path

public JsonNode path(String fieldName)

从类复制的说明: JsonNode

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. This allows for convenient and safe chained access via path calls.

指定者:

path 在类中 JsonNode

path

public JsonNode path(int index)

从类复制的说明: JsonNode

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. This allows for convenient and safe chained access via path calls.

指定者:

path 在类中 JsonNode

toString

public String toString()

从类复制的说明: JsonNode

Note: marked as abstract to ensure all implementation classes define it properly.

指定者:

toString 在类中 JsonNode