public abstract class ObjectCodec extends TreeCodec implements Versioned
JsonParser and
JsonGenerator use to serialize and deserialize regular
Java objects (POJOs aka Beans).
The standard implementation of this class is
com.fasterxml.jackson.databind.ObjectMapper,
defined in the "jackson-databind".
| Modifier | Constructor and Description |
|---|---|
protected |
ObjectCodec() |
| Modifier and Type | Method and Description |
|---|---|
abstract TreeNode |
createArrayNode()
Method for construct root level Array nodes
for Tree Model instances.
|
abstract TreeNode |
createObjectNode()
Method for construct root level Object nodes
for Tree Model instances.
|
JsonFactory |
getFactory()
Accessor for finding underlying data format factory
(
JsonFactory) codec will use for data binding. |
JsonFactory |
getJsonFactory()
Deprecated.
Since 2.1: Use
getFactory() instead. |
abstract <T extends TreeNode> |
readTree(JsonParser p)
Method to deserialize JSON content as tree expressed
using set of
TreeNode instances. |
abstract <T> T |
readValue(JsonParser p,
Class<T> valueType)
Method to deserialize JSON content into a non-container
type (it can be an array type, however): typically a bean, array
or a wrapper type (like
Boolean). |
abstract <T> T |
readValue(JsonParser p,
ResolvedType valueType)
Method to deserialize JSON content into a POJO, type specified
with fully resolved type object (so it can be a generic type,
including containers like
Collection and
Map). |
abstract <T> T |
readValue(JsonParser p,
TypeReference<?> valueTypeRef)
Method to deserialize JSON content into a Java type, reference
to which is passed as argument.
|
abstract <T> Iterator<T> |
readValues(JsonParser p,
Class<T> valueType)
Method for reading sequence of Objects from parser stream,
all with same specified value type.
|
abstract <T> Iterator<T> |
readValues(JsonParser p,
ResolvedType valueType)
Method for reading sequence of Objects from parser stream,
all with same specified value type.
|
abstract <T> Iterator<T> |
readValues(JsonParser p,
TypeReference<?> valueTypeRef)
Method for reading sequence of Objects from parser stream,
all with same specified value type.
|
abstract JsonParser |
treeAsTokens(TreeNode n)
Method for constructing a
JsonParser for reading
contents of a JSON tree, as if it was external serialized
JSON content. |
abstract <T> T |
treeToValue(TreeNode n,
Class<T> valueType)
Convenience method for converting given JSON tree into instance of specified
value type.
|
abstract Version |
version()
Method called to detect version of the component that implements this interface;
returned version should never be null, but may return specific "not available"
instance (see
Version for details). |
abstract void |
writeTree(JsonGenerator gen,
TreeNode tree) |
abstract void |
writeValue(JsonGenerator gen,
Object value)
Method to serialize given Java Object, using generator
provided.
|
public abstract Version version()
VersionedVersion for details).public abstract <T> T readValue(JsonParser p, Class<T> valueType) throws IOException
Boolean).
Note: this method should NOT be used if the result type is a
container (Collection or Map.
The reason is that due to type erasure, key and value types
can not be introspected when using this method.
IOExceptionpublic abstract <T> T readValue(JsonParser p, TypeReference<?> valueTypeRef) throws IOException
IOExceptionpublic abstract <T> T readValue(JsonParser p, ResolvedType valueType) throws IOException
Collection and
Map).IOExceptionpublic abstract <T> Iterator<T> readValues(JsonParser p, Class<T> valueType) throws IOException
IOExceptionpublic abstract <T> Iterator<T> readValues(JsonParser p, TypeReference<?> valueTypeRef) throws IOException
IOExceptionpublic abstract <T> Iterator<T> readValues(JsonParser p, ResolvedType valueType) throws IOException
IOExceptionpublic abstract void writeValue(JsonGenerator gen, Object value) throws IOException
IOExceptionpublic abstract <T extends TreeNode> T readTree(JsonParser p) throws IOException
TreeNode instances. Returns
root of the resulting tree (where root can consist
of just a single node if the current event is a
value event, not container). Empty or whitespace
documents return null.readTree in class TreeCodecIOExceptionpublic abstract void writeTree(JsonGenerator gen, TreeNode tree) throws IOException
writeTree in class TreeCodecIOExceptionpublic abstract TreeNode createObjectNode()
createObjectNode in class TreeCodecpublic abstract TreeNode createArrayNode()
createArrayNode in class TreeCodecpublic abstract JsonParser treeAsTokens(TreeNode n)
JsonParser for reading
contents of a JSON tree, as if it was external serialized
JSON content.treeAsTokens in class TreeCodecpublic abstract <T> T treeToValue(TreeNode n, Class<T> valueType) throws JsonProcessingException
JsonParser to
iterate over contents of the tree, and using that parser for data binding.JsonProcessingException@Deprecated public JsonFactory getJsonFactory()
getFactory() instead.public JsonFactory getFactory()
JsonFactory) codec will use for data binding.Copyright © 2008–2018 FasterXML. All rights reserved.