Class MissingNode
- All Implemented Interfaces:
Iterable<JsonNode>
,JsonSerializable
,JsonSerializableWithType
In most respects this placeholder node will act as NullNode
;
for example, for purposes of value conversions, value is considered
to be null and represented as value zero when used for numeric
conversions.
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Field Summary
Fields inherited from class org.codehaus.jackson.JsonNode
NO_NODES, NO_STRINGS
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Method Summary
Modifier and TypeMethodDescriptionboolean
asBoolean
(boolean defaultValue) Method that will try to convert value of this node to a Java boolean.double
asDouble
(double defaultValue) Method that will try to convert value of this node to a Java double.int
asInt
(int defaultValue) Method that will try to convert value of this node to a Java int.long
asLong
(long defaultValue) Method that will try to convert value of this node to a Java long.asText()
Method that will return valid String representation of the container value, if the node is a value node (methodJsonNode.isValueNode()
returns true), otherwise empty String.asToken()
Method that can be used for efficient type detection when using stream abstraction for traversing nodes.boolean
Equality for node objects is defined as full (deep) value equality.static MissingNode
boolean
Method that returns true for "virtual" nodes which represent missing entries constructed by path accessor methods when there is no actual node matching given criteria.path
(int index) This method is similar toJsonNode.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 forJsonNode.isMissingNode()
) will be returned.This method is similar toJsonNode.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 forJsonNode.isMissingNode()
) will be returned.final void
serialize
(JsonGenerator jg, SerializerProvider provider) Method called to serialize node instances using given generator.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.toString()
Note: marked as abstract to ensure all implementation classes define it properly.Methods inherited from class org.codehaus.jackson.node.BaseJsonNode
findParent, findParents, findPath, findValue, findValues, findValuesAsText, getNumberType, traverse
Methods inherited from class org.codehaus.jackson.JsonNode
asBoolean, asDouble, asInt, asLong, 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, isNull, isNumber, isObject, isPojo, isTextual, isValueNode, iterator, size, with
Methods inherited from class java.lang.Object
clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
Methods inherited from interface java.lang.Iterable
forEach, spliterator
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Method Details
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getInstance
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asToken
Description copied from class:BaseJsonNode
Method that can be used for efficient type detection when using stream abstraction for traversing nodes. Will return the firstJsonToken
that equivalent stream event would produce (for most nodes there is just one token but for structured/container types multiple)- Specified by:
asToken
in classBaseJsonNode
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isMissingNode
public boolean isMissingNode()Description copied from class:JsonNode
Method that returns true for "virtual" nodes which represent missing entries constructed by path accessor methods when there is no actual node matching given criteria.Note: one and only one of methods
JsonNode.isValueNode()
,JsonNode.isContainerNode()
andJsonNode.isMissingNode()
ever returns true for any given node.- Overrides:
isMissingNode
in classJsonNode
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asText
Description copied from class:JsonNode
Method that will return valid String representation of the container value, if the node is a value node (methodJsonNode.isValueNode()
returns true), otherwise empty String. -
asBoolean
public boolean asBoolean(boolean defaultValue) Description copied from class:JsonNode
Method that will try to convert value of this node to a Java boolean. JSON booleans map naturally; integer numbers other than 0 map to true, and 0 maps to false and Strings 'true' and 'false' map to corresponding values.If representation can not be converted to a boolean value (including structured types like Objects and Arrays), specified defaultValue will be returned; no exceptions are thrown.
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asInt
public int asInt(int defaultValue) Description copied from class:JsonNode
Method that will try to convert value of this node to a Java int. Numbers are coerced using default Java rules; booleans convert to 0 (false) and 1 (true), and Strings are parsed using default Java language integer parsing rules.If representation can not be converted to an int (including structured types like Objects and Arrays), specified defaultValue will be returned; no exceptions are thrown.
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asLong
public long asLong(long defaultValue) Description copied from class:JsonNode
Method that will try to convert value of this node to a Java long. Numbers are coerced using default Java rules; booleans convert to 0 (false) and 1 (true), and Strings are parsed using default Java language integer parsing rules.If representation can not be converted to an long (including structured types like Objects and Arrays), specified defaultValue will be returned; no exceptions are thrown.
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asDouble
public double asDouble(double defaultValue) Description copied from class:JsonNode
Method that will try to convert value of this node to a Java double. Numbers are coerced using default Java rules; booleans convert to 0.0 (false) and 1.0 (true), and Strings are parsed using default Java language integer parsing rules.If representation can not be converted to an int (including structured types like Objects and Arrays), specified defaultValue will be returned; no exceptions are thrown.
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path
Description copied from class:JsonNode
This method is similar toJsonNode.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 forJsonNode.isMissingNode()
) will be returned. This allows for convenient and safe chained access via path calls. -
path
Description copied from class:JsonNode
This method is similar toJsonNode.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 forJsonNode.isMissingNode()
) will be returned. This allows for convenient and safe chained access via path calls. -
serialize
public final void serialize(JsonGenerator jg, SerializerProvider provider) throws IOException, JsonProcessingException Description copied from class:BaseJsonNode
Method called to serialize node instances using given generator.- Specified by:
serialize
in interfaceJsonSerializable
- Specified by:
serialize
in classBaseJsonNode
- Throws:
IOException
JsonProcessingException
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serializeWithType
public void serializeWithType(JsonGenerator jg, SerializerProvider provider, TypeSerializer typeSer) throws IOException, JsonProcessingException Description copied from class:BaseJsonNode
Type information is needed, even if JsonNode instances are "plain" JSON, since they may be mixed with other types.- Specified by:
serializeWithType
in interfaceJsonSerializableWithType
- Specified by:
serializeWithType
in classBaseJsonNode
- Throws:
IOException
JsonProcessingException
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equals
Description copied from class:JsonNode
Equality for node objects is defined as full (deep) value equality. This means that it is possible to compare complete JSON trees for equality by comparing equality of root nodes.Note: marked as abstract to ensure all implementation classes define it properly and not rely on definition from
Object
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toString
Description copied from class:JsonNode
Note: marked as abstract to ensure all implementation classes define it properly.
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