org.codehaus.jackson.map.impl
Class ValueNode

java.lang.Object
  org.codehaus.jackson.map.JsonNode
      org.codehaus.jackson.map.impl.ValueNode

Direct Known Subclasses:

BooleanNode, NullNode, NumericNode, TextNode

public abstract class ValueNode
extends JsonNode

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

Constructor Summary

protected

ValueNode()

Method Summary

JsonNode	getPath(int index) This method is similar to JsonNode.getElementValue(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	getPath(String fieldName) This method is similar to JsonNode.getFieldValue(java.lang.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.
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.
String	toString() Let's mark this standard method as abstract to ensure all implementation classes define it

Methods inherited from class org.codehaus.jackson.map.JsonNode

appendElement, equals, getBooleanValue, getDecimalValue, getDoubleValue, getElements, getElementValue, getFieldNames, getFieldValue, getFieldValues, getIntValue, getLongValue, getNumberValue, getTextValue, getValueAsText, insertElement, isArray, isBigDecimal, isBoolean, isContainerNode, isDouble, isFloatingPointNumber, isInt, isIntegralNumber, isLong, isMissingNode, isNull, isNumber, isObject, isTextual, removeElement, removeElement, reportNoArrayMods, reportNoObjectMods, setElement, setElement, size, writeTo

Methods inherited from class java.lang.Object

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

Constructor Detail

ValueNode

protected ValueNode()

Method Detail

isValueNode

public boolean isValueNode()

Description copied from class: 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.

Overrides:

isValueNode in class JsonNode

getPath

public JsonNode getPath(String fieldName)

Description copied from class: JsonNode

This method is similar to JsonNode.getFieldValue(java.lang.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.

Specified by:

getPath in class JsonNode

getPath

public JsonNode getPath(int index)

Description copied from class: JsonNode

This method is similar to JsonNode.getElementValue(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.

Specified by:

getPath in class JsonNode

toString

public String toString()

Description copied from class: JsonNode

Let's mark this standard method as abstract to ensure all implementation classes define it

Specified by:

toString in class JsonNode