ObjectWriter (jackson-databind 2.10.0 API)

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 and Description
`static class`	`ObjectWriter.GeneratorSettings` Helper class used for containing settings specifically related to (re)configuring `JsonGenerator` constructed for writing output.
`static 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.

Field Summary

Fields
Modifier and Type	Field and Description
`protected SerializationConfig`	`_config` General serialization configuration settings
`protected JsonFactory`	`_generatorFactory` Factory used for constructing `JsonGenerator`s
`protected ObjectWriter.GeneratorSettings`	`_generatorSettings` Container for settings that need to be passed to `JsonGenerator` constructed for serializing values.
`protected ObjectWriter.Prefetch`	`_prefetch` We may pre-fetch serializer if root type is known (has been explicitly declared), and if so, reuse it afterwards.
`protected SerializerFactory`	`_serializerFactory`
`protected DefaultSerializerProvider`	`_serializerProvider`
`protected static PrettyPrinter`	`NULL_PRETTY_PRINTER` We need to keep track of explicit disabling of pretty printing; easiest to do by a token value.

Constructor Summary

Constructors
Modifier	Constructor and Description
`protected`	`ObjectWriter(ObjectMapper mapper, SerializationConfig config)` Alternative constructor for initial instantiation by `ObjectMapper`
`protected`	`ObjectWriter(ObjectMapper mapper, SerializationConfig config, FormatSchema s)` Alternative constructor for initial instantiation by `ObjectMapper`
`protected`	`ObjectWriter(ObjectMapper mapper, SerializationConfig config, JavaType rootType, PrettyPrinter pp)` Constructor used by `ObjectMapper` for initial instantiation
`protected`	`ObjectWriter(ObjectWriter base, JsonFactory f)`
`protected`	`ObjectWriter(ObjectWriter base, SerializationConfig config)` Copy constructor used for building variations.
`protected`	`ObjectWriter(ObjectWriter base, SerializationConfig config, ObjectWriter.GeneratorSettings genSettings, ObjectWriter.Prefetch prefetch)` Copy constructor used for building variations.

Method Summary

All Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`protected void`	`_assertNotNull(String paramName, Object src)`
`protected void`	`_configAndWriteValue(JsonGenerator gen, Object value)` Method called to configure the generator as necessary and then call write functionality
`protected void`	`_configureGenerator(JsonGenerator gen)` Helper method called to set or override settings of passed-in `JsonGenerator`
`protected ObjectWriter`	`_new(ObjectWriter.GeneratorSettings genSettings, ObjectWriter.Prefetch prefetch)` Overridable factory method called by various "withXxx()" methods.
`protected ObjectWriter`	`_new(ObjectWriter base, JsonFactory f)` Overridable factory method called by various "withXxx()" methods
`protected ObjectWriter`	`_new(ObjectWriter base, SerializationConfig config)` Overridable factory method called by various "withXxx()" methods
`protected SequenceWriter`	`_newSequenceWriter(boolean wrapInArray, JsonGenerator gen, boolean managedInput)` Overridable factory method called by `writeValues(OutputStream)` method (and its various overrides), and initializes it as necessary.
`protected DefaultSerializerProvider`	`_serializerProvider()` Overridable helper method used for constructing `SerializerProvider` to use for serialization.
`protected void`	`_verifySchemaType(FormatSchema schema)`
`void`	`acceptJsonFormatVisitor(Class<?> type, JsonFormatVisitorWrapper visitor)` Since 2.6
`void`	`acceptJsonFormatVisitor(JavaType type, JsonFormatVisitorWrapper visitor)` Method for visiting type hierarchy for given type, using specified visitor.
`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).
`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.
`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(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.
`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(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(CharacterEscapes escapes)`
`ObjectWriter`	`with(ContextAttributes attrs)`
`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(FilterProvider filterProvider)` Method that will construct a new instance that uses specified provider for resolving filter instances by id.
`ObjectWriter`	`with(FormatFeature feature)`
`ObjectWriter`	`with(FormatSchema schema)` Method that will construct a new instance that uses specific format schema for serialization.
`ObjectWriter`	`with(JsonFactory f)`
`ObjectWriter`	`with(JsonGenerator.Feature feature)`
`ObjectWriter`	`with(Locale l)`
`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(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(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(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(SerializationFeature feature)` Method for constructing a new instance that is configured with specified feature enabled.
`ObjectWriter`	`without(SerializationFeature first, SerializationFeature... other)` Method for constructing a new instance that is configured with specified features enabled.
`ObjectWriter`	`withoutAttribute(Object key)`
`ObjectWriter`	`withoutFeatures(FormatFeature... features)`
`ObjectWriter`	`withoutFeatures(JsonGenerator.Feature... features)`
`ObjectWriter`	`withoutFeatures(SerializationFeature... features)` Method for constructing a new instance that is configured with specified features enabled.
`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(Class<?> rootType)` Deprecated. since 2.5 Use `forType(Class)` instead
`ObjectWriter`	`withType(JavaType rootType)` Deprecated. since 2.5 Use `forType(JavaType)` instead
`ObjectWriter`	`withType(TypeReference<?> rootType)` Deprecated. since 2.5 Use `forType(TypeReference)` 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(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(JsonGenerator g, Object value)` Method that can be used to serialize any Java value as JSON output, using provided `JsonGenerator`.
`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(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(JsonGenerator g)` 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(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(JsonGenerator gen)` 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
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - NULL_PRETTY_PRINTER
```
protected static final PrettyPrinter NULL_PRETTY_PRINTER
```
    We need to keep track of explicit disabling of pretty printing; easiest to do by a token value.
  - _config
```
protected final SerializationConfig _config
```
    General serialization configuration settings
  - _serializerProvider
```
protected final DefaultSerializerProvider _serializerProvider
```
  - _serializerFactory
```
protected final SerializerFactory _serializerFactory
```
  - _generatorFactory
```
protected final JsonFactory _generatorFactory
```
    Factory used for constructing JsonGenerators
  - _generatorSettings
```
protected final ObjectWriter.GeneratorSettings _generatorSettings
```
    Container for settings that need to be passed to JsonGenerator constructed for serializing values.
    
    Since:
    
    2.5
  - _prefetch
```
protected final ObjectWriter.Prefetch _prefetch
```
    We may pre-fetch serializer if root type is known (has been explicitly declared), and if so, reuse it afterwards. This allows avoiding further serializer lookups and increases performance a bit on cases where readers are reused.
    
    Since:
    
    2.5
- Constructor Detail
  - ObjectWriter
```
protected ObjectWriter(ObjectMapper mapper,
                       SerializationConfig config,
                       JavaType rootType,
                       PrettyPrinter pp)
```
    Constructor used by ObjectMapper for initial instantiation
  - ObjectWriter
```
protected ObjectWriter(ObjectMapper mapper,
                       SerializationConfig config)
```
    Alternative constructor for initial instantiation by ObjectMapper
  - ObjectWriter
```
protected ObjectWriter(ObjectMapper mapper,
                       SerializationConfig config,
                       FormatSchema s)
```
    Alternative constructor for initial instantiation by ObjectMapper
  - ObjectWriter
```
protected ObjectWriter(ObjectWriter base,
                       SerializationConfig config,
                       ObjectWriter.GeneratorSettings genSettings,
                       ObjectWriter.Prefetch prefetch)
```
    Copy constructor used for building variations.
  - ObjectWriter
```
protected ObjectWriter(ObjectWriter base,
                       SerializationConfig config)
```
    Copy constructor used for building variations.
  - ObjectWriter
```
protected ObjectWriter(ObjectWriter base,
                       JsonFactory f)
```
    Since:
    
    2.3
- Method Detail
  - 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
  - _new
```
protected ObjectWriter _new(ObjectWriter base,
                            JsonFactory f)
```
    Overridable factory method called by various "withXxx()" methods
    
    Since:
    
    2.5
  - _new
```
protected ObjectWriter _new(ObjectWriter base,
                            SerializationConfig config)
```
    Overridable factory method called by various "withXxx()" methods
    
    Since:
    
    2.5
  - _new
```
protected ObjectWriter _new(ObjectWriter.GeneratorSettings genSettings,
                            ObjectWriter.Prefetch prefetch)
```
    Overridable factory method called by various "withXxx()" methods. It assumes `this` as base for settings other than those directly passed in.
    
    Since:
    
    2.5
  - _newSequenceWriter
```
protected SequenceWriter _newSequenceWriter(boolean wrapInArray,
                                            JsonGenerator gen,
                                            boolean managedInput)
                                     throws IOException
```
    Overridable factory method called by writeValues(OutputStream) method (and its various overrides), and initializes it as necessary.
    
    Throws:
    
    IOException
    
    Since:
    
    2.5
  - 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 enabled.
  - without
```
public ObjectWriter without(SerializationFeature first,
                            SerializationFeature... other)
```
    Method for constructing a new instance that is configured with specified features enabled.
  - withoutFeatures
```
public ObjectWriter withoutFeatures(SerializationFeature... features)
```
    Method for constructing a new instance that is configured with specified features enabled.
  - 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(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
  - 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
```
@Deprecated
public boolean isEnabled(JsonParser.Feature f)
```
    Deprecated.
    
    Since:
    
    2.9
  - isEnabled
```
public boolean isEnabled(JsonGenerator.Feature f)
```
    Since:
    
    2.9
  - 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.
    
    Throws:
    
    IOException
  - writeValue
```
public void writeValue(File resultFile,
                       Object value)
                throws IOException,
                       JsonGenerationException,
                       JsonMappingException
```
    Method that can be used to serialize any Java value as JSON output, written to File provided.
    
    Throws:
    
    IOException
    
    JsonGenerationException
    
    JsonMappingException
  - writeValue
```
public void writeValue(OutputStream out,
                       Object value)
                throws IOException,
                       JsonGenerationException,
                       JsonMappingException
```
    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
    
    JsonGenerationException
    
    JsonMappingException
  - writeValue
```
public void writeValue(Writer w,
                       Object value)
                throws IOException,
                       JsonGenerationException,
                       JsonMappingException
```
    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
    
    JsonGenerationException
    
    JsonMappingException
  - writeValue
```
public void writeValue(DataOutput out,
                       Object value)
                throws IOException
```
    Throws:
    
    IOException
    
    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
  - _serializerProvider
```
protected DefaultSerializerProvider _serializerProvider()
```
    Overridable helper method used for constructing SerializerProvider to use for serialization.
  - _verifySchemaType
```
protected void _verifySchemaType(FormatSchema schema)
```
    Since:
    
    2.2
  - _configAndWriteValue
```
protected final void _configAndWriteValue(JsonGenerator gen,
                                          Object value)
                                   throws IOException
```
    Method called to configure the generator as necessary and then call write functionality
    
    Throws:
    
    IOException
  - _configureGenerator
```
protected final void _configureGenerator(JsonGenerator gen)
```
    Helper method called to set or override settings of passed-in JsonGenerator
    
    Since:
    
    2.5
  - _assertNotNull
```
protected final void _assertNotNull(String paramName,
                                    Object src)
```

Class ObjectWriter

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

NULL_PRETTY_PRINTER

_config

_serializerProvider

_serializerFactory

_generatorFactory

_generatorSettings

_prefetch

Constructor Detail

ObjectWriter

ObjectWriter

ObjectWriter

ObjectWriter

ObjectWriter

ObjectWriter

Method Detail

version

_new

_new

_new

_newSequenceWriter

with

with

withFeatures

without

without

withoutFeatures

with

withFeatures

without

withoutFeatures

with

withFeatures

without

withoutFeatures

forType

forType

forType

withType

withType

withType

with

withDefaultPrettyPrinter

with

with

withRootName

withRootName

withoutRootName

with

withSchema

withView

with

with

with

with

with

with

withAttributes

withAttribute

withoutAttribute

withRootValueSeparator

withRootValueSeparator

writeValues

writeValues

writeValues

writeValues

writeValues

writeValuesAsArray

writeValuesAsArray

writeValuesAsArray

writeValuesAsArray

writeValuesAsArray

isEnabled

isEnabled