Package com.fasterxml.jackson.databind

Class ObjectWriter

java.lang.Object

com.fasterxml.jackson.databind.ObjectWriter

All Implemented Interfaces:

Versioned, Serializable

public class ObjectWriter
extends Object
implements Versioned, Serializable

Builder object that can be used for per-serialization configuration of serialization parameters, such as JSON View and root type to use. (and thus fully thread-safe with no external synchronization); new instances are constructed for different configurations. Instances are initially constructed by ObjectMapper and can be reused in completely thread-safe manner with no explicit synchronization

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	ObjectWriter.GeneratorSettings	Helper class used for containing settings specifically related to (re)configuring JsonGenerator constructed for writing output.
static final class	ObjectWriter.Prefetch	As a minor optimization, we will make an effort to pre-fetch a serializer, or at least relevant TypeSerializer, if given enough information.

Method Summary

Modifier and Type	Method	Description
void	acceptJsonFormatVisitor(JavaType type, JsonFormatVisitorWrapper visitor)	Method for visiting type hierarchy for given type, using specified visitor.
void	acceptJsonFormatVisitor(Class<?> type, JsonFormatVisitorWrapper visitor)	Since 2.6
boolean	canSerialize(Class<?> type)
boolean	canSerialize(Class<?> type, AtomicReference<Throwable> cause)	Method for checking whether instances of given type can be serialized, and optionally why (as per Throwable returned).
JsonGenerator	createGenerator(DataOutput out)	Factory method for constructing properly initialized JsonGenerator to write content using specified DataOutput.
JsonGenerator	createGenerator(File outputFile, JsonEncoding enc)	Factory method for constructing properly initialized JsonGenerator to write content to specified File, using specified encoding.
JsonGenerator	createGenerator(OutputStream out)	Factory method for constructing properly initialized JsonGenerator to write content using specified OutputStream.
JsonGenerator	createGenerator(OutputStream out, JsonEncoding enc)	Factory method for constructing properly initialized JsonGenerator to write content using specified OutputStream and encoding.
JsonGenerator	createGenerator(Writer w)	Factory method for constructing properly initialized JsonGenerator to write content using specified Writer.
ObjectWriter	forType(TypeReference<?> rootType)	Method that will construct a new instance that uses specific type as the root type for serialization, instead of runtime dynamic type of the root object itself.
ObjectWriter	forType(JavaType rootType)	Method that will construct a new instance that uses specific type as the root type for serialization, instead of runtime dynamic type of the root object itself.
ObjectWriter	forType(Class<?> rootType)	Method that will construct a new instance that uses specific type as the root type for serialization, instead of runtime dynamic type of the root object itself.
ContextAttributes	getAttributes()
SerializationConfig	getConfig()
JsonFactory	getFactory()
TypeFactory	getTypeFactory()
boolean	hasPrefetchedSerializer()	Diagnostics method that can be called to check whether this writer has pre-fetched serializer to use: pre-fetching improves performance when writer instances are reused as it avoids a per-call serializer lookup.
boolean	isEnabled(JsonGenerator.Feature f)
boolean	isEnabled(JsonParser.Feature f)	Deprecated.
boolean	isEnabled(StreamWriteFeature f)
boolean	isEnabled(DatatypeFeature f)
boolean	isEnabled(MapperFeature f)
boolean	isEnabled(SerializationFeature f)
Version	version()	Method that will return version information stored in and read from jar that contains this class.
ObjectWriter	with(Base64Variant b64variant)	Method that will construct a new instance that uses specified default Base64Variant for base64 encoding
ObjectWriter	with(FormatFeature feature)
ObjectWriter	with(FormatSchema schema)	Method that will construct a new instance that uses specific format schema for serialization.
ObjectWriter	with(CharacterEscapes escapes)
ObjectWriter	with(JsonFactory f)
ObjectWriter	with(JsonGenerator.Feature feature)
ObjectWriter	with(PrettyPrinter pp)	Method that will construct a new instance that will use specified pretty printer (or, if null, will not do any pretty-printing)
ObjectWriter	with(StreamWriteFeature feature)
ObjectWriter	with(ContextAttributes attrs)
ObjectWriter	with(DatatypeFeature feature)	Method for constructing a new instance that is configured with specified feature enabled.
ObjectWriter	with(FilterProvider filterProvider)	Method that will construct a new instance that uses specified provider for resolving filter instances by id.
ObjectWriter	with(SerializationFeature feature)	Method for constructing a new instance that is configured with specified feature enabled.
ObjectWriter	with(SerializationFeature first, SerializationFeature... other)	Method for constructing a new instance that is configured with specified features enabled.
ObjectWriter	with(DateFormat df)	Fluent factory method that will construct a new writer instance that will use specified date format for serializing dates; or if null passed, one that will serialize dates as numeric timestamps.
ObjectWriter	with(Locale l)
ObjectWriter	with(TimeZone tz)
ObjectWriter	withAttribute(Object key, Object value)
ObjectWriter	withAttributes(Map<?,?> attrs)	Mutant factory method that allows construction of a new writer instance that uses specified set of default attribute values.
ObjectWriter	withDefaultPrettyPrinter()	Method that will construct a new instance that will use the default pretty printer for serialization.
ObjectWriter	withFeatures(FormatFeature... features)
ObjectWriter	withFeatures(JsonGenerator.Feature... features)
ObjectWriter	withFeatures(DatatypeFeature... features)	Method for constructing a new instance that is configured with specified features enabled.
ObjectWriter	withFeatures(SerializationFeature... features)	Method for constructing a new instance that is configured with specified features enabled.
ObjectWriter	without(FormatFeature feature)
ObjectWriter	without(JsonGenerator.Feature feature)
ObjectWriter	without(StreamWriteFeature feature)
ObjectWriter	without(DatatypeFeature feature)	Method for constructing a new instance that is configured with specified feature disabled.
ObjectWriter	without(SerializationFeature feature)	Method for constructing a new instance that is configured with specified feature disabled.
ObjectWriter	without(SerializationFeature first, SerializationFeature... other)	Method for constructing a new instance that is configured with specified features disabled.
ObjectWriter	withoutAttribute(Object key)
ObjectWriter	withoutFeatures(FormatFeature... features)
ObjectWriter	withoutFeatures(JsonGenerator.Feature... features)
ObjectWriter	withoutFeatures(DatatypeFeature... features)	Method for constructing a new instance that is configured with specified features disabled.
ObjectWriter	withoutFeatures(SerializationFeature... features)	Method for constructing a new instance that is configured with specified features disabled.
ObjectWriter	withoutRootName()	Convenience method that is same as calling: withRootName("") which will forcibly prevent use of root name wrapping when writing values with this ObjectWriter.
ObjectWriter	withRootName(PropertyName rootName)
ObjectWriter	withRootName(String rootName)	Method for constructing a new instance with configuration that specifies what root name to use for "root element wrapping".
ObjectWriter	withRootValueSeparator(SerializableString sep)
ObjectWriter	withRootValueSeparator(String sep)
ObjectWriter	withSchema(FormatSchema schema)	Deprecated. Since 2.5 use with(FormatSchema) instead
ObjectWriter	withType(TypeReference<?> rootType)	Deprecated. since 2.5 Use forType(TypeReference) instead
ObjectWriter	withType(JavaType rootType)	Deprecated. since 2.5 Use forType(JavaType) instead
ObjectWriter	withType(Class<?> rootType)	Deprecated. since 2.5 Use forType(Class) instead
ObjectWriter	withView(Class<?> view)	Method that will construct a new instance that uses specified serialization view for serialization (with null basically disables view processing)
void	writeValue(JsonGenerator g, Object value)	Method that can be used to serialize any Java value as JSON output, using provided JsonGenerator.
void	writeValue(DataOutput out, Object value)
void	writeValue(File resultFile, Object value)	Method that can be used to serialize any Java value as JSON output, written to File provided.
void	writeValue(OutputStream out, Object value)	Method that can be used to serialize any Java value as JSON output, using output stream provided (using encoding JsonEncoding.UTF8).
void	writeValue(Writer w, Object value)	Method that can be used to serialize any Java value as JSON output, using Writer provided.
byte[]	writeValueAsBytes(Object value)	Method that can be used to serialize any Java value as a byte array.
String	writeValueAsString(Object value)	Method that can be used to serialize any Java value as a String.
SequenceWriter	writeValues(JsonGenerator g)	Method for creating a SequenceWriter to write a sequence of root values using configuration of this ObjectWriter.
SequenceWriter	writeValues(DataOutput out)
SequenceWriter	writeValues(File out)	Method for creating a SequenceWriter to write a sequence of root values using configuration of this ObjectWriter.
SequenceWriter	writeValues(OutputStream out)	Method for creating a SequenceWriter to write a sequence of root values using configuration of this ObjectWriter.
SequenceWriter	writeValues(Writer out)	Method for creating a SequenceWriter to write a sequence of root values using configuration of this ObjectWriter.
SequenceWriter	writeValuesAsArray(JsonGenerator gen)	Method for creating a SequenceWriter to write an array of root-level values, using configuration of this ObjectWriter.
SequenceWriter	writeValuesAsArray(DataOutput out)
SequenceWriter	writeValuesAsArray(File out)	Method for creating a SequenceWriter to write an array of root-level values, using configuration of this ObjectWriter.
SequenceWriter	writeValuesAsArray(OutputStream out)	Method for creating a SequenceWriter to write an array of root-level values, using configuration of this ObjectWriter.
SequenceWriter	writeValuesAsArray(Writer out)	Method for creating a SequenceWriter to write an array of root-level values, using configuration of this ObjectWriter.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

version

public Version version()

Method that will return version information stored in and read from jar that contains this class.

Specified by:

version in interface Versioned

Returns:

Version of the component

with

public ObjectWriter with(SerializationFeature feature)

Method for constructing a new instance that is configured with specified feature enabled.

with

public ObjectWriter with(SerializationFeature first,
 SerializationFeature... other)

Method for constructing a new instance that is configured with specified features enabled.

withFeatures

public ObjectWriter withFeatures(SerializationFeature... features)

Method for constructing a new instance that is configured with specified features enabled.

without

public ObjectWriter without(SerializationFeature feature)

Method for constructing a new instance that is configured with specified feature disabled.

without

public ObjectWriter without(SerializationFeature first,
 SerializationFeature... other)

Method for constructing a new instance that is configured with specified features disabled.

withoutFeatures

public ObjectWriter withoutFeatures(SerializationFeature... features)

Method for constructing a new instance that is configured with specified features disabled.

with

public ObjectWriter with(DatatypeFeature feature)

Method for constructing a new instance that is configured with specified feature enabled.

Since:

2.14

withFeatures

public ObjectWriter withFeatures(DatatypeFeature... features)

Method for constructing a new instance that is configured with specified features enabled.

Since:

2.14

without

public ObjectWriter without(DatatypeFeature feature)

Method for constructing a new instance that is configured with specified feature disabled.

Since:

2.14

withoutFeatures

public ObjectWriter withoutFeatures(DatatypeFeature... features)

Method for constructing a new instance that is configured with specified features disabled.

Since:

2.14

with

public ObjectWriter with(JsonGenerator.Feature feature)

Since:

2.5

withFeatures

public ObjectWriter withFeatures(JsonGenerator.Feature... features)

Since:

2.5

without

public ObjectWriter without(JsonGenerator.Feature feature)

Since:

2.5

withoutFeatures

public ObjectWriter withoutFeatures(JsonGenerator.Feature... features)

Since:

2.5

with

public ObjectWriter with(StreamWriteFeature feature)

Since:

2.11

without

public ObjectWriter without(StreamWriteFeature feature)

Since:

2.11

with

public ObjectWriter with(FormatFeature feature)

Since:

2.7

withFeatures

public ObjectWriter withFeatures(FormatFeature... features)

Since:

2.7

without

public ObjectWriter without(FormatFeature feature)

Since:

2.7

withoutFeatures

public ObjectWriter withoutFeatures(FormatFeature... features)

Since:

2.7

forType

public ObjectWriter forType(JavaType rootType)

Method that will construct a new instance that uses specific type as the root type for serialization, instead of runtime dynamic type of the root object itself.

Note that method does NOT change state of this reader, but rather construct and returns a newly configured instance.

Since:

2.5

forType

public ObjectWriter forType(Class<?> rootType)

Method that will construct a new instance that uses specific type as the root type for serialization, instead of runtime dynamic type of the root object itself.

Since:

2.5

forType

public ObjectWriter forType(TypeReference<?> rootType)

Method that will construct a new instance that uses specific type as the root type for serialization, instead of runtime dynamic type of the root object itself.

Since:

2.5

withType

@Deprecated
public ObjectWriter withType(JavaType rootType)

Deprecated.

since 2.5 Use forType(JavaType) instead

withType

@Deprecated
public ObjectWriter withType(Class<?> rootType)

Deprecated.

since 2.5 Use forType(Class) instead

withType

@Deprecated
public ObjectWriter withType(TypeReference<?> rootType)

Deprecated.

since 2.5 Use forType(TypeReference) instead

with

public ObjectWriter with(DateFormat df)

Fluent factory method that will construct a new writer instance that will use specified date format for serializing dates; or if null passed, one that will serialize dates as numeric timestamps.

Note that the method does NOT change state of this reader, but rather construct and returns a newly configured instance.

withDefaultPrettyPrinter

public ObjectWriter withDefaultPrettyPrinter()

Method that will construct a new instance that will use the default pretty printer for serialization.

with

public ObjectWriter with(FilterProvider filterProvider)

Method that will construct a new instance that uses specified provider for resolving filter instances by id.

with

public ObjectWriter with(PrettyPrinter pp)

Method that will construct a new instance that will use specified pretty printer (or, if null, will not do any pretty-printing)

withRootName

public ObjectWriter withRootName(String rootName)

Method for constructing a new instance with configuration that specifies what root name to use for "root element wrapping". See MapperConfigBase.withRootName(String) for details.

Note that method does NOT change state of this reader, but rather construct and returns a newly configured instance.

Parameters:

rootName - Root name to use, if non-empty; `null` for "use defaults", and empty String ("") for "do NOT add root wrapper"

withRootName

public ObjectWriter withRootName(PropertyName rootName)

Since:

2.6

withoutRootName

public ObjectWriter withoutRootName()

Convenience method that is same as calling: withRootName("") which will forcibly prevent use of root name wrapping when writing values with this ObjectWriter.

Since:

2.6

with

public ObjectWriter with(FormatSchema schema)

Method that will construct a new instance that uses specific format schema for serialization.

Note that method does NOT change state of this reader, but rather construct and returns a newly configured instance.

withSchema

@Deprecated
public ObjectWriter withSchema(FormatSchema schema)

Deprecated.

Since 2.5 use with(FormatSchema) instead

withView

public ObjectWriter withView(Class<?> view)

Method that will construct a new instance that uses specified serialization view for serialization (with null basically disables view processing)

Note that the method does NOT change state of this reader, but rather construct and returns a newly configured instance.

with

public ObjectWriter with(Locale l)

with

public ObjectWriter with(TimeZone tz)

with

public ObjectWriter with(Base64Variant b64variant)

Method that will construct a new instance that uses specified default Base64Variant for base64 encoding

Since:

2.1

with

public ObjectWriter with(CharacterEscapes escapes)

Since:

2.3

with

public ObjectWriter with(JsonFactory f)

Since:

2.3

with

public ObjectWriter with(ContextAttributes attrs)

Since:

2.3

withAttributes

public ObjectWriter withAttributes(Map<?,?> attrs)

Mutant factory method that allows construction of a new writer instance that uses specified set of default attribute values.

Since:

2.3

withAttribute

public ObjectWriter withAttribute(Object key,
 Object value)

Since:

2.3

withoutAttribute

public ObjectWriter withoutAttribute(Object key)

Since:

2.3

withRootValueSeparator

public ObjectWriter withRootValueSeparator(String sep)

Since:

2.5

withRootValueSeparator

public ObjectWriter withRootValueSeparator(SerializableString sep)

Since:

2.5

createGenerator

public JsonGenerator createGenerator(OutputStream out)
                              throws IOException

Factory method for constructing properly initialized JsonGenerator to write content using specified OutputStream. Generator is not managed (or "owned") by ObjectWriter: caller is responsible for properly closing it once content generation is complete.

Throws:

IOException

Since:

2.11

createGenerator

public JsonGenerator createGenerator(OutputStream out,
 JsonEncoding enc)
                              throws IOException

Factory method for constructing properly initialized JsonGenerator to write content using specified OutputStream and encoding. Generator is not managed (or "owned") by ObjectWriter: caller is responsible for properly closing it once content generation is complete.

Throws:

IOException

Since:

2.11

createGenerator

public JsonGenerator createGenerator(Writer w)
                              throws IOException

Factory method for constructing properly initialized JsonGenerator to write content using specified Writer. Generator is not managed (or "owned") by ObjectWriter: caller is responsible for properly closing it once content generation is complete.

Throws:

IOException

Since:

2.11

createGenerator

public JsonGenerator createGenerator(File outputFile,
 JsonEncoding enc)
                              throws IOException

Factory method for constructing properly initialized JsonGenerator to write content to specified File, using specified encoding. Generator is not managed (or "owned") by ObjectWriter: caller is responsible for properly closing it once content generation is complete.

Throws:

IOException

Since:

2.11

createGenerator

public JsonGenerator createGenerator(DataOutput out)
                              throws IOException

Factory method for constructing properly initialized JsonGenerator to write content using specified DataOutput. Generator is not managed (or "owned") by ObjectWriter: caller is responsible for properly closing it once content generation is complete.

Throws:

IOException

Since:

2.11

writeValues

public SequenceWriter writeValues(File out)
                           throws IOException

Method for creating a SequenceWriter to write a sequence of root values using configuration of this ObjectWriter. Sequence is not surrounded by JSON array; some backend types may not support writing of such sequences as root level. Resulting writer needs to be SequenceWriter.close()d after all values have been written to ensure closing of underlying generator and output stream.

Parameters:

out - Target file to write value sequence to.

Throws:

IOException

Since:

2.5

writeValues

public SequenceWriter writeValues(JsonGenerator g)
                           throws IOException

Method for creating a SequenceWriter to write a sequence of root values using configuration of this ObjectWriter. Sequence is not surrounded by JSON array; some backend types may not support writing of such sequences as root level. Resulting writer needs to be SequenceWriter.close()d after all values have been written to ensure that all content gets flushed by the generator. However, since a JsonGenerator is explicitly passed, it will NOT be closed when SequenceWriter.close() is called.

Parameters:

g - Low-level generator caller has already constructed that will be used for actual writing of token stream.

Throws:

IOException

Since:

2.5

writeValues

public SequenceWriter writeValues(Writer out)
                           throws IOException

Method for creating a SequenceWriter to write a sequence of root values using configuration of this ObjectWriter. Sequence is not surrounded by JSON array; some backend types may not support writing of such sequences as root level. Resulting writer needs to be SequenceWriter.close()d after all values have been written to ensure closing of underlying generator and output stream.

Parameters:

out - Target writer to use for writing the token stream

Throws:

IOException

Since:

2.5

writeValues

public SequenceWriter writeValues(OutputStream out)
                           throws IOException

Method for creating a SequenceWriter to write a sequence of root values using configuration of this ObjectWriter. Sequence is not surrounded by JSON array; some backend types may not support writing of such sequences as root level. Resulting writer needs to be SequenceWriter.close()d after all values have been written to ensure closing of underlying generator and output stream.

Parameters:

out - Physical output stream to use for writing the token stream

Throws:

IOException

Since:

2.5

writeValues

public SequenceWriter writeValues(DataOutput out)
                           throws IOException

Throws:

IOException

Since:

2.8

writeValuesAsArray

public SequenceWriter writeValuesAsArray(File out)
                                  throws IOException

Method for creating a SequenceWriter to write an array of root-level values, using configuration of this ObjectWriter. Resulting writer needs to be SequenceWriter.close()d after all values have been written to ensure closing of underlying generator and output stream.

Note that the type to use with forType(Class) needs to be type of individual values (elements) to write and NOT matching array or Collection type.

Parameters:

out - File to write token stream to

Throws:

IOException

Since:

2.5

writeValuesAsArray

public SequenceWriter writeValuesAsArray(JsonGenerator gen)
                                  throws IOException

Method for creating a SequenceWriter to write an array of root-level values, using configuration of this ObjectWriter. Resulting writer needs to be SequenceWriter.close()d after all values have been written to ensure that all content gets flushed by the generator. However, since a JsonGenerator is explicitly passed, it will NOT be closed when SequenceWriter.close() is called.

Note that the type to use with forType(Class) needs to be type of individual values (elements) to write and NOT matching array or Collection type.

Parameters:

gen - Underlying generator to use for writing the token stream

Throws:

IOException

Since:

2.5

writeValuesAsArray

public SequenceWriter writeValuesAsArray(Writer out)
                                  throws IOException

Method for creating a SequenceWriter to write an array of root-level values, using configuration of this ObjectWriter. Resulting writer needs to be SequenceWriter.close()d after all values have been written to ensure closing of underlying generator and output stream.

Note that the type to use with forType(Class) needs to be type of individual values (elements) to write and NOT matching array or Collection type.

Parameters:

out - Writer to use for writing the token stream

Throws:

IOException

Since:

2.5

writeValuesAsArray

public SequenceWriter writeValuesAsArray(OutputStream out)
                                  throws IOException

Method for creating a SequenceWriter to write an array of root-level values, using configuration of this ObjectWriter. Resulting writer needs to be SequenceWriter.close()d after all values have been written to ensure closing of underlying generator and output stream.

Note that the type to use with forType(Class) needs to be type of individual values (elements) to write and NOT matching array or Collection type.

Parameters:

out - Physical output stream to use for writing the token stream

Throws:

IOException

Since:

2.5

writeValuesAsArray

public SequenceWriter writeValuesAsArray(DataOutput out)
                                  throws IOException

Throws:

IOException

Since:

2.8

isEnabled

public boolean isEnabled(SerializationFeature f)

isEnabled

public boolean isEnabled(MapperFeature f)

isEnabled

public boolean isEnabled(DatatypeFeature f)

Since:

2.14

isEnabled

@Deprecated
public boolean isEnabled(JsonParser.Feature f)

Deprecated.

Since:

2.9

isEnabled

public boolean isEnabled(JsonGenerator.Feature f)

Since:

2.9

isEnabled

public boolean isEnabled(StreamWriteFeature f)

Since:

2.11

getConfig

public SerializationConfig getConfig()

Since:

2.2

getFactory

public JsonFactory getFactory()

Since:

2.2

getTypeFactory

public TypeFactory getTypeFactory()

hasPrefetchedSerializer

public boolean hasPrefetchedSerializer()

Diagnostics method that can be called to check whether this writer has pre-fetched serializer to use: pre-fetching improves performance when writer instances are reused as it avoids a per-call serializer lookup.

Since:

2.2

getAttributes

public ContextAttributes getAttributes()

Since:

2.3

writeValue

public void writeValue(JsonGenerator g,
 Object value)
                throws IOException

Method that can be used to serialize any Java value as JSON output, using provided JsonGenerator.

Note that the given JsonGenerator is not closed; caller is expected to handle that as necessary.

Throws:

IOException

writeValue

public void writeValue(File resultFile,
 Object value)
                throws IOException,
StreamWriteException,
DatabindException

Method that can be used to serialize any Java value as JSON output, written to File provided.

Throws:

IOException

StreamWriteException

DatabindException

writeValue

public void writeValue(OutputStream out,
 Object value)
                throws IOException,
StreamWriteException,
DatabindException

Method that can be used to serialize any Java value as JSON output, using output stream provided (using encoding JsonEncoding.UTF8).

Note: method does not close the underlying stream explicitly here; however, JsonFactory this mapper uses may choose to close the stream depending on its settings (by default, it will try to close it when JsonGenerator we construct is closed).

Throws:

IOException

StreamWriteException

DatabindException

writeValue

public void writeValue(Writer w,
 Object value)
                throws IOException,
StreamWriteException,
DatabindException

Method that can be used to serialize any Java value as JSON output, using Writer provided.

Note: method does not close the underlying stream explicitly here; however, JsonFactory this mapper uses may choose to close the stream depending on its settings (by default, it will try to close it when JsonGenerator we construct is closed).

Throws:

IOException

StreamWriteException

DatabindException

writeValue

public void writeValue(DataOutput out,
 Object value)
                throws IOException,
StreamWriteException,
DatabindException

Throws:

IOException

StreamWriteException

DatabindException

Since:

2.8

writeValueAsString

public String writeValueAsString(Object value)
                          throws JsonProcessingException

Method that can be used to serialize any Java value as a String. Functionally equivalent to calling writeValue(Writer,Object) with StringWriter and constructing String, but more efficient.

Note: prior to version 2.1, throws clause included IOException; 2.1 removed it.

Throws:

JsonProcessingException

writeValueAsBytes

public byte[] writeValueAsBytes(Object value)
                         throws JsonProcessingException

Method that can be used to serialize any Java value as a byte array. Functionally equivalent to calling writeValue(Writer,Object) with ByteArrayOutputStream and getting bytes, but more efficient. Encoding used will be UTF-8.

Note: prior to version 2.1, throws clause included IOException; 2.1 removed it.

Throws:

JsonProcessingException

acceptJsonFormatVisitor

public void acceptJsonFormatVisitor(JavaType type,
 JsonFormatVisitorWrapper visitor)
                             throws JsonMappingException

Method for visiting type hierarchy for given type, using specified visitor. Visitation uses Serializer hierarchy and related properties

This method can be used for things like generating Json Schema instance for specified type.

Parameters:

type - Type to generate schema for (possibly with generic signature)

Throws:

JsonMappingException

Since:

2.2

acceptJsonFormatVisitor

public void acceptJsonFormatVisitor(Class<?> type,
 JsonFormatVisitorWrapper visitor)
                             throws JsonMappingException

Since 2.6

Throws:

JsonMappingException

canSerialize

public boolean canSerialize(Class<?> type)

canSerialize

public boolean canSerialize(Class<?> type,
 AtomicReference<Throwable> cause)

Method for checking whether instances of given type can be serialized, and optionally why (as per Throwable returned).

Since:

2.3