Package com.fasterxml.jackson.core

Class JsonFactory

java.lang.Object
com.fasterxml.jackson.core.TokenStreamFactory
com.fasterxml.jackson.core.JsonFactory
All Implemented Interfaces:
Versioned, Serializable
Direct Known Subclasses:
MappingJsonFactory
public class JsonFactory extends TokenStreamFactory implements Serializable
The main factory class of Jackson package, used to configure and construct reader (aka parser, JsonParser) and writer (aka generator, JsonGenerator) instances.

Factory instances are thread-safe and reusable after configuration (if any). Typically applications and services use only a single globally shared factory instance, unless they need differently configured factories. Factory reuse is important if efficiency matters; most recycling of expensive construct is done on per-factory basis.

Creation of a factory instance is a light-weight operation, and since there is no need for pluggable alternative implementations (as there is no "standard" JSON processor API to implement), the default constructor is used for constructing factory instances.

Author:
Tatu Saloranta
See Also:

  • Field Details

    • FORMAT_NAME_JSON

      public static final String FORMAT_NAME_JSON
      Name used to identify JSON format (and returned by getFormatName()
      See Also:

    • DEFAULT_FACTORY_FEATURE_FLAGS

      protected static final int DEFAULT_FACTORY_FEATURE_FLAGS
      Bitfield (set of flags) of all factory features that are enabled by default.

    • DEFAULT_PARSER_FEATURE_FLAGS

      protected static final int DEFAULT_PARSER_FEATURE_FLAGS
      Bitfield (set of flags) of all parser features that are enabled by default.

    • DEFAULT_GENERATOR_FEATURE_FLAGS

      protected static final int DEFAULT_GENERATOR_FEATURE_FLAGS
      Bitfield (set of flags) of all generator features that are enabled by default.

    • DEFAULT_ROOT_VALUE_SEPARATOR

      public static final SerializableString DEFAULT_ROOT_VALUE_SEPARATOR

    • DEFAULT_QUOTE_CHAR

      public static final char DEFAULT_QUOTE_CHAR
      Since:
      2.10
      See Also:

    • _rootCharSymbols

      protected transient CharsToNameCanonicalizer _rootCharSymbols
      Each factory comes equipped with a shared root symbol table. It should not be linked back to the original blueprint, to avoid contents from leaking between factories.

      NOTE: non-final since 2.17 due to need to re-create if StreamReadConstraints re-configured for factory.

    • _byteSymbolCanonicalizer

      protected final transient ByteQuadsCanonicalizer _byteSymbolCanonicalizer
      Alternative to the basic symbol table, some stream-based parsers use different name canonicalization method.
      Since:
      2.6

    • _factoryFeatures

      protected int _factoryFeatures
      Currently enabled factory features.

    • _parserFeatures

      protected int _parserFeatures
      Currently enabled parser features.

    • _generatorFeatures

      protected int _generatorFeatures
      Currently enabled generator features.

    • _recyclerPool

      protected RecyclerPool<BufferRecycler> _recyclerPool
      RecyclerPool configured for use by this factory: used for recycling underlying read and/or write buffers via BufferRecycler.
      Since:
      2.16

    • _objectCodec

      protected ObjectCodec _objectCodec
      Object that implements conversion functionality between Java objects and JSON content. For base JsonFactory implementation usually not set by default, but can be explicitly set. Sub-classes (like @link org.codehaus.jackson.map.MappingJsonFactory} usually provide an implementation.

    • _characterEscapes

      protected CharacterEscapes _characterEscapes
      Definition of custom character escapes to use for generators created by this factory, if any. If null, standard data format specific escapes are used.

    • _streamReadConstraints

      protected StreamReadConstraints _streamReadConstraints
      Read constraints to use for JsonParsers constructed using this factory.
      Since:
      2.15

    • _errorReportConfiguration

      protected ErrorReportConfiguration _errorReportConfiguration
      Container for configuration values used when handling erroneous token inputs.
      Since:
      2.16

    • _streamWriteConstraints

      protected StreamWriteConstraints _streamWriteConstraints
      Write constraints to use for JsonGenerators constructed using this factory.
      Since:
      2.16

    • _inputDecorator

      protected InputDecorator _inputDecorator
      Optional helper object that may decorate input sources, to do additional processing on input during parsing.

    • _outputDecorator

      protected OutputDecorator _outputDecorator
      Optional helper object that may decorate output object, to do additional processing on output during content generation.

    • _generatorDecorators

      protected final List<JsonGeneratorDecorator> _generatorDecorators
      List of JsonGeneratorDecorators to apply to JsonGenerators after construction; applied in the order of addition.
      Since:
      2.16

    • _rootValueSeparator

      protected SerializableString _rootValueSeparator
      Separator used between root-level values, if any; null indicates "do not add separator". Default separator is a single space character.
      Since:
      2.1

    • _maximumNonEscapedChar

      protected int _maximumNonEscapedChar
      Optional threshold used for automatically escaping character above certain character code value: either 0 to indicate that no threshold is specified, or value at or above 127 to indicate last character code that is NOT automatically escaped (but depends on other configuration rules for checking).
      Since:
      2.10

    • _quoteChar

      protected final char _quoteChar
      Character used for quoting field names (if field name quoting has not been disabled with JsonWriteFeature.QUOTE_FIELD_NAMES) and JSON String values.

  • Constructor Details

    • JsonFactory

      public JsonFactory()
      Default constructor used to create factory instances. Creation of a factory instance is a light-weight operation, but it is still a good idea to reuse limited number of factory instances (and quite often just a single instance): factories are used as context for storing some reused processing objects (such as symbol tables parsers use) and this reuse only works within context of a single factory instance.

    • JsonFactory

      public JsonFactory(ObjectCodec oc)

    • JsonFactory

      protected JsonFactory(JsonFactory src, ObjectCodec codec)
      Constructor used when copy()ing a factory instance.
      Parameters:
      src - Original factory to copy settings from
      codec - Databinding-level codec to use, if any
      Since:
      2.2.1

    • JsonFactory

      public JsonFactory(JsonFactoryBuilder b)
      Constructor used by JsonFactoryBuilder for instantiation.
      Parameters:
      b - Builder that contains settings to use
      Since:
      2.10

    • JsonFactory

      protected JsonFactory(TSFBuilder<?,?> b, boolean bogus)
      Constructor for subtypes; needed to work around the fact that before 3.0, this factory has cumbersome dual role as generic type as well as actual implementation for json.
      Parameters:
      b - Builder that contains settings to use
      bogus - Argument only needed to separate constructor signature; ignored

  • Method Details

    • rebuild

      public TSFBuilder<?,?> rebuild()
      Method that allows construction of differently configured factory, starting with settings of this factory.
      Returns:
      Builder instance to use
      Since:
      2.10

    • builder

      public static TSFBuilder<?,?> builder()
      Main factory method to use for constructing JsonFactory instances with different configuration: creates and returns a builder for collecting configuration settings; instance created by calling build() after all configuration set.

      NOTE: signature unfortunately does not expose true implementation type; this will be fixed in 3.0.

      Returns:
      Builder instance to use

    • copy

      public JsonFactory copy()
      Method for constructing a new JsonFactory that has the same settings as this instance, but is otherwise independent (i.e. nothing is actually shared, symbol tables are separate). Note that ObjectCodec reference is not copied but is set to null; caller typically needs to set it after calling this method. Reason for this is that the codec is used for callbacks, and assumption is that there is strict 1-to-1 mapping between codec, factory. Caller has to, then, explicitly set codec after making the copy.
      Returns:
      Copy of this factory instance
      Since:
      2.1

    • _checkInvalidCopy

      protected void _checkInvalidCopy(Class<?> exp)

    • _copy

      protected static <T> List<T> _copy(List<T> src)

    • readResolve

      protected Object readResolve()
      Method that we need to override to actually make restoration go through constructors etc: needed to allow JDK serializability of factory instances.

      Note: must be overridden by sub-classes as well.

      Returns:
      Newly constructed instance

    • requiresPropertyOrdering

      public boolean requiresPropertyOrdering()
      Introspection method that higher-level functionality may call to see whether underlying data format requires a stable ordering of object properties or not. This is usually used for determining whether to force a stable ordering (like alphabetic ordering by name) if no ordering if explicitly specified.

      Default implementation returns false as JSON does NOT require stable ordering. Formats that require ordering include positional textual formats like CSV, and schema-based binary formats like Avro.

      Specified by:
      requiresPropertyOrdering in class TokenStreamFactory
      Returns:
      Whether format supported by this factory requires Object properties to be ordered.
      Since:
      2.3

    • canHandleBinaryNatively

      public boolean canHandleBinaryNatively()
      Introspection method that higher-level functionality may call to see whether underlying data format can read and write binary data natively; that is, embeded it as-is without using encodings such as Base64.

      Default implementation returns false as JSON does not support native access: all binary content must use Base64 encoding. Most binary formats (like Smile and Avro) support native binary content.

      Specified by:
      canHandleBinaryNatively in class TokenStreamFactory
      Returns:
      Whether format supported by this factory supports native binary content
      Since:
      2.3

    • canUseCharArrays

      public boolean canUseCharArrays()
      Introspection method that can be used by base factory to check whether access using char[] is something that actual parser implementations can take advantage of, over having to use Reader. Sub-types are expected to override definition; default implementation (suitable for JSON) alleges that optimization are possible; and thereby is likely to try to access String content by first copying it into recyclable intermediate buffer.
      Returns:
      Whether access to decoded textual content can be efficiently accessed using parser method getTextCharacters().
      Since:
      2.4

    • canParseAsync

      public boolean canParseAsync()
      Introspection method that can be used to check whether this factory can create non-blocking parsers: parsers that do not use blocking I/O abstractions but instead use a NonBlockingInputFeeder.
      Specified by:
      canParseAsync in class TokenStreamFactory
      Returns:
      Whether this factory supports non-blocking ("async") parsing or not (and consequently whether createNonBlockingXxx() method(s) work)
      Since:
      2.9

    • getFormatReadFeatureType

      public Class<? extends FormatFeature> getFormatReadFeatureType()
      Description copied from class: TokenStreamFactory
      Method for accessing kind of FormatFeature that a parser JsonParser produced by this factory would accept, if any; null returned if none.
      Specified by:
      getFormatReadFeatureType in class TokenStreamFactory
      Returns:
      Type of format-specific stream read features, if any; null if none

    • getFormatWriteFeatureType

      public Class<? extends FormatFeature> getFormatWriteFeatureType()
      Description copied from class: TokenStreamFactory
      Method for accessing kind of FormatFeature that a parser JsonGenerator produced by this factory would accept, if any; null returned if none.
      Specified by:
      getFormatWriteFeatureType in class TokenStreamFactory
      Returns:
      Type of format-specific stream read features, if any; null if none

    • canUseSchema

      public boolean canUseSchema(FormatSchema schema)
      Method that can be used to quickly check whether given schema is something that parsers and/or generators constructed by this factory could use. Note that this means possible use, at the level of data format (i.e. schema is for same data format as parsers and generators this factory constructs); individual schema instances may have further usage restrictions.
      Specified by:
      canUseSchema in class TokenStreamFactory
      Parameters:
      schema - Schema instance to check
      Returns:
      Whether parsers and generators constructed by this factory can use specified format schema instance

    • getFormatName

      public String getFormatName()
      Method that returns short textual id identifying format this factory supports.

      Note: sub-classes should override this method; default implementation will return null for all sub-classes

      Specified by:
      getFormatName in class TokenStreamFactory
      Returns:
      Name of the format handled by parsers, generators this factory creates

    • hasFormat

      public MatchStrength hasFormat(InputAccessor acc) throws IOException
      Throws:
      IOException

    • requiresCustomCodec

      public boolean requiresCustomCodec()
      Method that can be called to determine if a custom ObjectCodec is needed for binding data parsed using JsonParser constructed by this factory (which typically also implies the same for serialization with JsonGenerator).
      Returns:
      True if custom codec is needed with parsers and generators created by this factory; false if a general ObjectCodec is enough
      Since:
      2.1

    • hasJSONFormat

      protected MatchStrength hasJSONFormat(InputAccessor acc) throws IOException
      Throws:
      IOException

    • version

      public Version version()
      Description copied from interface: Versioned
      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).
      Specified by:
      version in interface Versioned
      Returns:
      Version of the component

    • configure

      @Deprecated public final JsonFactory configure(JsonFactory.Feature f, boolean state)
      Deprecated.
      since 2.10 use TSFBuilder.configure(JsonFactory.Feature, boolean) instead
      Method for enabling or disabling specified parser feature (check JsonParser.Feature for list of features)
      Parameters:
      f - Feature to enable/disable
      state - Whether to enable or disable the feature
      Returns:
      This factory instance (to allow call chaining)

    • enable

      @Deprecated public JsonFactory enable(JsonFactory.Feature f)
      Deprecated.
      since 2.10 use TSFBuilder.configure(JsonFactory.Feature, boolean) instead
      Method for enabling specified parser feature (check JsonFactory.Feature for list of features)
      Parameters:
      f - Feature to enable
      Returns:
      This factory instance (to allow call chaining)

    • disable

      @Deprecated public JsonFactory disable(JsonFactory.Feature f)
      Deprecated.
      since 2.10 use TSFBuilder.configure(JsonFactory.Feature, boolean) instead
      Method for disabling specified parser features (check JsonFactory.Feature for list of features)
      Parameters:
      f - Feature to disable
      Returns:
      This factory instance (to allow call chaining)

    • isEnabled

      public final boolean isEnabled(JsonFactory.Feature f)
      Checked whether specified parser feature is enabled.
      Specified by:
      isEnabled in class TokenStreamFactory
      Parameters:
      f - Feature to check
      Returns:
      True if the specified feature is enabled

    • getFactoryFeatures

      public final int getFactoryFeatures()
      Description copied from class: TokenStreamFactory
      Method for getting bit set of all JsonFactory.Features enabled
      Specified by:
      getFactoryFeatures in class TokenStreamFactory
      Returns:
      Bitset of enabled JsonFactory.Features.

    • getParserFeatures

      public final int getParserFeatures()
      Specified by:
      getParserFeatures in class TokenStreamFactory

    • getGeneratorFeatures

      public final int getGeneratorFeatures()
      Specified by:
      getGeneratorFeatures in class TokenStreamFactory

    • getFormatParserFeatures

      public int getFormatParserFeatures()
      Specified by:
      getFormatParserFeatures in class TokenStreamFactory

    • getFormatGeneratorFeatures

      public int getFormatGeneratorFeatures()
      Specified by:
      getFormatGeneratorFeatures in class TokenStreamFactory

    • streamReadConstraints

      public StreamReadConstraints streamReadConstraints()
      Description copied from class: TokenStreamFactory
      Get the constraints to apply when performing streaming reads.
      Specified by:
      streamReadConstraints in class TokenStreamFactory
      Returns:
      Constraints to apply to reads done by JsonParsers constructed by this factory.

    • streamWriteConstraints

      public StreamWriteConstraints streamWriteConstraints()
      Description copied from class: TokenStreamFactory
      Get the constraints to apply when performing streaming writes.
      Specified by:
      streamWriteConstraints in class TokenStreamFactory
      Returns:
      Constraints to apply to reads done by JsonGenerators constructed by this factory.

    • setStreamReadConstraints

      public JsonFactory setStreamReadConstraints(StreamReadConstraints src)
      Method for overriding StreamReadConstraints defined for this factory.

      NOTE: the preferred way to set constraints is by using TSFBuilder.streamReadConstraints(com.fasterxml.jackson.core.StreamReadConstraints): this method is only provided to support older non-builder-based construction. In Jackson 3.x this method will not be available.

      Parameters:
      src - Constraints
      Returns:
      This factory instance (to allow call chaining)
      Since:
      2.15

    • setErrorReportConfiguration

      public JsonFactory setErrorReportConfiguration(ErrorReportConfiguration src)
      Method for overriding ErrorReportConfiguration defined for this factory.

      NOTE: the preferred way to set constraints is by using TSFBuilder.errorReportConfiguration(com.fasterxml.jackson.core.ErrorReportConfiguration): this method is only provided to support older non-builder-based construction. In Jackson 3.x this method will not be available.

      Parameters:
      src - Configuration
      Returns:
      This factory instance (to allow call chaining)
      Since:
      2.16

    • setStreamWriteConstraints

      public JsonFactory setStreamWriteConstraints(StreamWriteConstraints swc)
      Method for overriding StreamWriteConstraints defined for this factory.

      NOTE: the preferred way to set constraints is by using TSFBuilder.streamWriteConstraints(com.fasterxml.jackson.core.StreamWriteConstraints): this method is only provided to support older non-builder-based construction. In Jackson 3.x this method will not be available.

      Parameters:
      swc - Constraints
      Returns:
      This factory instance (to allow call chaining)
      Since:
      2.16

    • configure

      public final JsonFactory configure(JsonParser.Feature f, boolean state)
      Method for enabling or disabling specified parser feature (check JsonParser.Feature for list of features)
      Parameters:
      f - Feature to enable/disable
      state - Whether to enable or disable the feature
      Returns:
      This factory instance (to allow call chaining)

    • enable

      public JsonFactory enable(JsonParser.Feature f)
      Method for enabling specified parser feature (check JsonParser.Feature for list of features)
      Parameters:
      f - Feature to enable
      Returns:
      This factory instance (to allow call chaining)

    • disable

      public JsonFactory disable(JsonParser.Feature f)
      Method for disabling specified parser features (check JsonParser.Feature for list of features)
      Parameters:
      f - Feature to disable
      Returns:
      This factory instance (to allow call chaining)

    • isEnabled

      public final boolean isEnabled(JsonParser.Feature f)
      Method for checking if the specified parser feature is enabled.
      Specified by:
      isEnabled in class TokenStreamFactory
      Parameters:
      f - Feature to check
      Returns:
      True if specified feature is enabled

    • isEnabled

      public final boolean isEnabled(StreamReadFeature f)
      Method for checking if the specified stream read feature is enabled.
      Specified by:
      isEnabled in class TokenStreamFactory
      Parameters:
      f - Feature to check
      Returns:
      True if specified feature is enabled
      Since:
      2.10

    • getInputDecorator

      public InputDecorator getInputDecorator()
      Method for getting currently configured input decorator (if any; there is no default decorator).
      Returns:
      InputDecorator configured, if any

    • setInputDecorator

      @Deprecated public JsonFactory setInputDecorator(InputDecorator d)
      Deprecated.
      Since 2.10 use TSFBuilder.inputDecorator(InputDecorator) instead
      Method for overriding currently configured input decorator
      Parameters:
      d - Decorator to configure for this factory, if any (null if none)
      Returns:
      This factory instance (to allow call chaining)

    • configure

      public final JsonFactory configure(JsonGenerator.Feature f, boolean state)
      Method for enabling or disabling specified generator feature (check JsonGenerator.Feature for list of features)
      Parameters:
      f - Feature to enable/disable
      state - Whether to enable or disable the feature
      Returns:
      This factory instance (to allow call chaining)

    • enable

      public JsonFactory enable(JsonGenerator.Feature f)
      Method for enabling specified generator features (check JsonGenerator.Feature for list of features)
      Parameters:
      f - Feature to enable
      Returns:
      This factory instance (to allow call chaining)

    • disable

      public JsonFactory disable(JsonGenerator.Feature f)
      Method for disabling specified generator feature (check JsonGenerator.Feature for list of features)
      Parameters:
      f - Feature to disable
      Returns:
      This factory instance (to allow call chaining)

    • isEnabled

      public final boolean isEnabled(JsonGenerator.Feature f)
      Check whether specified generator feature is enabled.
      Specified by:
      isEnabled in class TokenStreamFactory
      Parameters:
      f - Feature to check
      Returns:
      Whether specified feature is enabled

    • isEnabled

      public final boolean isEnabled(StreamWriteFeature f)
      Check whether specified stream write feature is enabled.
      Specified by:
      isEnabled in class TokenStreamFactory
      Parameters:
      f - Feature to check
      Returns:
      Whether specified feature is enabled
      Since:
      2.10

    • getCharacterEscapes

      public CharacterEscapes getCharacterEscapes()
      Method for accessing custom escapes factory uses for JsonGenerators it creates.
      Returns:
      Configured CharacterEscapes, if any; null if none

    • setCharacterEscapes

      public JsonFactory setCharacterEscapes(CharacterEscapes esc)
      Method for defining custom escapes factory uses for JsonGenerators it creates.
      Parameters:
      esc - CharaterEscapes to set (or null for "none")
      Returns:
      This factory instance (to allow call chaining)

    • getOutputDecorator

      public OutputDecorator getOutputDecorator()
      Method for getting currently configured output decorator (if any; there is no default decorator).
      Returns:
      OutputDecorator configured for generators factory creates, if any; null if none.

    • setOutputDecorator

      @Deprecated public JsonFactory setOutputDecorator(OutputDecorator d)
      Deprecated.
      Since 2.10 use TSFBuilder.outputDecorator(OutputDecorator) instead
      Method for overriding currently configured output decorator
      Parameters:
      d - Output decorator to use, if any
      Returns:
      This factory instance (to allow call chaining)

    • setRootValueSeparator

      public JsonFactory setRootValueSeparator(String sep)
      Method that allows overriding String used for separating root-level JSON values (default is single space character)
      Parameters:
      sep - Separator to use, if any; null means that no separator is automatically added
      Returns:
      This factory instance (to allow call chaining)

    • getRootValueSeparator

      public String getRootValueSeparator()
      Returns:
      Root value separator configured, if any

    • setRecyclerPool

      public JsonFactory setRecyclerPool(RecyclerPool<BufferRecycler> p)

    • setCodec

      public JsonFactory setCodec(ObjectCodec oc)
      Method for associating a ObjectCodec (typically a com.fasterxml.jackson.databind.ObjectMapper) with this factory (and more importantly, parsers and generators it constructs). This is needed to use data-binding methods of JsonParser and JsonGenerator instances.
      Parameters:
      oc - Codec to use
      Returns:
      This factory instance (to allow call chaining)

    • getCodec

      public ObjectCodec getCodec()

    • createParser

      public JsonParser createParser(File f) throws IOException, JsonParseException
      Method for constructing JSON parser instance to parse contents of specified file.

      Encoding is auto-detected from contents according to JSON specification recommended mechanism. Json specification supports only UTF-8, UTF-16 and UTF-32 as valid encodings, so auto-detection implemented only for this charsets. For other charsets use createParser(java.io.Reader).

      Underlying input stream (needed for reading contents) will be owned (and managed, i.e. closed as need be) by the parser, since caller has no access to it.

      Specified by:
      createParser in class TokenStreamFactory
      Parameters:
      f - File that contains JSON content to parse
      Throws:
      IOException
      JsonParseException
      Since:
      2.1

    • createParser

      public JsonParser createParser(URL url) throws IOException, JsonParseException
      Method for constructing JSON parser instance to parse contents of resource reference by given URL.

      Encoding is auto-detected from contents according to JSON specification recommended mechanism. Json specification supports only UTF-8, UTF-16 and UTF-32 as valid encodings, so auto-detection implemented only for this charsets. For other charsets use createParser(java.io.Reader).

      Underlying input stream (needed for reading contents) will be owned (and managed, i.e. closed as need be) by the parser, since caller has no access to it.

      Specified by:
      createParser in class TokenStreamFactory
      Parameters:
      url - URL pointing to resource that contains JSON content to parse
      Throws:
      IOException
      JsonParseException
      Since:
      2.1

    • createParser

      public JsonParser createParser(InputStream in) throws IOException, JsonParseException
      Method for constructing JSON parser instance to parse the contents accessed via specified input stream.

      The input stream will not be owned by the parser, it will still be managed (i.e. closed if end-of-stream is reacher, or parser close method called) if (and only if) StreamReadFeature.AUTO_CLOSE_SOURCE is enabled.

      Note: no encoding argument is taken since it can always be auto-detected as suggested by JSON RFC. Json specification supports only UTF-8, UTF-16 and UTF-32 as valid encodings, so auto-detection implemented only for this charsets. For other charsets use createParser(java.io.Reader).

      Specified by:
      createParser in class TokenStreamFactory
      Parameters:
      in - InputStream to use for reading JSON content to parse
      Throws:
      IOException
      JsonParseException
      Since:
      2.1

    • createParser

      public JsonParser createParser(Reader r) throws IOException, JsonParseException
      Method for constructing parser for parsing the contents accessed via specified Reader.

      The read stream will not be owned by the parser, it will still be managed (i.e. closed if end-of-stream is reacher, or parser close method called) if (and only if) StreamReadFeature.AUTO_CLOSE_SOURCE is enabled.

      Specified by:
      createParser in class TokenStreamFactory
      Parameters:
      r - Reader to use for reading JSON content to parse
      Throws:
      IOException
      JsonParseException
      Since:
      2.1

    • createParser

      public JsonParser createParser(byte[] data) throws IOException, JsonParseException
      Method for constructing parser for parsing the contents of given byte array.
      Specified by:
      createParser in class TokenStreamFactory
      Throws:
      IOException
      JsonParseException
      Since:
      2.1

    • createParser

      public JsonParser createParser(byte[] data, int offset, int len) throws IOException, JsonParseException
      Method for constructing parser for parsing the contents of given byte array.
      Specified by:
      createParser in class TokenStreamFactory
      Parameters:
      data - Buffer that contains data to parse
      offset - Offset of the first data byte within buffer
      len - Length of contents to parse within buffer
      Throws:
      IOException
      JsonParseException
      Since:
      2.1

    • createParser

      public JsonParser createParser(String content) throws IOException, JsonParseException
      Method for constructing parser for parsing contents of given String.
      Specified by:
      createParser in class TokenStreamFactory
      Throws:
      IOException
      JsonParseException
      Since:
      2.1

    • createParser

      public JsonParser createParser(char[] content) throws IOException
      Method for constructing parser for parsing contents of given char array.
      Specified by:
      createParser in class TokenStreamFactory
      Throws:
      IOException
      Since:
      2.4

    • createParser

      public JsonParser createParser(char[] content, int offset, int len) throws IOException
      Method for constructing parser for parsing contents of given char array.
      Specified by:
      createParser in class TokenStreamFactory
      Throws:
      IOException
      Since:
      2.4

    • createParser

      public JsonParser createParser(DataInput in) throws IOException
      Optional method for constructing parser for reading contents from specified DataInput instance.

      If this factory does not support DataInput as source, will throw UnsupportedOperationException

      Specified by:
      createParser in class TokenStreamFactory
      Throws:
      IOException
      Since:
      2.8

    • createNonBlockingByteArrayParser

      public JsonParser createNonBlockingByteArrayParser() throws IOException
      Optional method for constructing parser for non-blocking parsing via ByteArrayFeeder interface (accessed using JsonParser.getNonBlockingInputFeeder() from constructed instance).

      If this factory does not support non-blocking parsing (either at all, or from byte array), will throw UnsupportedOperationException.

      Note that JSON-backed factory only supports parsing of UTF-8 encoded JSON content (and US-ASCII since it is proper subset); other encodings are not supported at this point.

      Specified by:
      createNonBlockingByteArrayParser in class TokenStreamFactory
      Returns:
      Constructed parser
      Throws:
      IOException - If there are problems constructing parser
      Since:
      2.9

    • createNonBlockingByteBufferParser

      public JsonParser createNonBlockingByteBufferParser() throws IOException
      Optional method for constructing parser for non-blocking parsing via ByteBufferFeeder interface (accessed using JsonParser.getNonBlockingInputFeeder() from constructed instance).

      If this factory does not support non-blocking parsing (either at all, or from byte array), will throw UnsupportedOperationException.

      Note that JSON-backed factory only supports parsing of UTF-8 encoded JSON content (and US-ASCII since it is proper subset); other encodings are not supported at this point.

      Specified by:
      createNonBlockingByteBufferParser in class TokenStreamFactory
      Returns:
      Constructed parser
      Throws:
      IOException - If there are problems constructing parser
      Since:
      2.14

    • createGenerator

      public JsonGenerator createGenerator(OutputStream out, JsonEncoding enc) throws IOException
      Method for constructing JSON generator for writing JSON content using specified output stream. Encoding to use must be specified, and needs to be one of available types (as per JSON specification).

      Underlying stream is NOT owned by the generator constructed, so that generator will NOT close the output stream when JsonGenerator.close() is called (unless auto-closing feature, JsonGenerator.Feature.AUTO_CLOSE_TARGET is enabled). Using application needs to close it explicitly if this is the case.

      Note: there are formats that use fixed encoding (like most binary data formats) and that ignore passed in encoding.

      Specified by:
      createGenerator in class TokenStreamFactory
      Parameters:
      out - OutputStream to use for writing JSON content
      enc - Character encoding to use
      Throws:
      IOException
      Since:
      2.1

    • createGenerator

      public JsonGenerator createGenerator(OutputStream out) throws IOException
      Convenience method for constructing generator that uses default encoding of the format (UTF-8 for JSON and most other data formats).

      Note: there are formats that use fixed encoding (like most binary data formats).

      Specified by:
      createGenerator in class TokenStreamFactory
      Throws:
      IOException
      Since:
      2.1

    • createGenerator

      public JsonGenerator createGenerator(Writer w) throws IOException
      Method for constructing JSON generator for writing JSON content using specified Writer.

      Underlying stream is NOT owned by the generator constructed, so that generator will NOT close the Reader when JsonGenerator.close() is called (unless auto-closing feature, JsonGenerator.Feature.AUTO_CLOSE_TARGET is enabled). Using application needs to close it explicitly.

      Specified by:
      createGenerator in class TokenStreamFactory
      Parameters:
      w - Writer to use for writing JSON content
      Throws:
      IOException
      Since:
      2.1

    • createGenerator

      public JsonGenerator createGenerator(File f, JsonEncoding enc) throws IOException
      Method for constructing JSON generator for writing JSON content to specified file, overwriting contents it might have (or creating it if such file does not yet exist). Encoding to use must be specified, and needs to be one of available types (as per JSON specification).

      Underlying stream is owned by the generator constructed, i.e. generator will handle closing of file when JsonGenerator.close() is called.

      Specified by:
      createGenerator in class TokenStreamFactory
      Parameters:
      f - File to write contents to
      enc - Character encoding to use
      Throws:
      IOException
      Since:
      2.1

    • createGenerator

      public JsonGenerator createGenerator(DataOutput out, JsonEncoding enc) throws IOException
      Method for constructing generator for writing content using specified DataOutput instance.
      Specified by:
      createGenerator in class TokenStreamFactory
      Throws:
      IOException
      Since:
      2.8

    • createGenerator

      public JsonGenerator createGenerator(DataOutput out) throws IOException
      Convenience method for constructing generator that uses default encoding of the format (UTF-8 for JSON and most other data formats).

      Note: there are formats that use fixed encoding (like most binary data formats).

      Specified by:
      createGenerator in class TokenStreamFactory
      Throws:
      IOException
      Since:
      2.8

    • createJsonParser

      @Deprecated public JsonParser createJsonParser(File f) throws IOException, JsonParseException
      Deprecated.
      Since 2.2, use createParser(File) instead.
      Method for constructing JSON parser instance to parse contents of specified file.

      Encoding is auto-detected from contents according to JSON specification recommended mechanism. Json specification supports only UTF-8, UTF-16 and UTF-32 as valid encodings, so auto-detection implemented only for this charsets. For other charsets use createParser(java.io.Reader).

      Underlying input stream (needed for reading contents) will be owned (and managed, i.e. closed as need be) by the parser, since caller has no access to it.

      Parameters:
      f - File that contains JSON content to parse
      Returns:
      Parser constructed
      Throws:
      IOException - if parser initialization fails due to I/O (read) problem
      JsonParseException - if parser initialization fails due to content decoding problem

    • createJsonParser

      @Deprecated public JsonParser createJsonParser(URL url) throws IOException, JsonParseException
      Deprecated.
      Since 2.2, use createParser(URL) instead.
      Method for constructing JSON parser instance to parse contents of resource reference by given URL.

      Encoding is auto-detected from contents according to JSON specification recommended mechanism. Json specification supports only UTF-8, UTF-16 and UTF-32 as valid encodings, so auto-detection implemented only for this charsets. For other charsets use createParser(java.io.Reader).

      Underlying input stream (needed for reading contents) will be owned (and managed, i.e. closed as need be) by the parser, since caller has no access to it.

      Parameters:
      url - URL pointing to resource that contains JSON content to parse
      Returns:
      Parser constructed
      Throws:
      IOException - if parser initialization fails due to I/O (read) problem
      JsonParseException - if parser initialization fails due to content decoding problem

    • createJsonParser

      @Deprecated public JsonParser createJsonParser(InputStream in) throws IOException, JsonParseException
      Deprecated.
      Since 2.2, use createParser(InputStream) instead.
      Method for constructing JSON parser instance to parse the contents accessed via specified input stream.

      The input stream will not be owned by the parser, it will still be managed (i.e. closed if end-of-stream is reacher, or parser close method called) if (and only if) JsonParser.Feature.AUTO_CLOSE_SOURCE is enabled.

      Note: no encoding argument is taken since it can always be auto-detected as suggested by JSON RFC. Json specification supports only UTF-8, UTF-16 and UTF-32 as valid encodings, so auto-detection implemented only for this charsets. For other charsets use createParser(java.io.Reader).

      Parameters:
      in - InputStream to use for reading JSON content to parse
      Returns:
      Parser constructed
      Throws:
      IOException - if parser initialization fails due to I/O (read) problem
      JsonParseException - if parser initialization fails due to content decoding problem

    • createJsonParser

      @Deprecated public JsonParser createJsonParser(Reader r) throws IOException, JsonParseException
      Deprecated.
      Since 2.2, use createParser(Reader) instead.
      Method for constructing parser for parsing the contents accessed via specified Reader.

      The read stream will not be owned by the parser, it will still be managed (i.e. closed if end-of-stream is reacher, or parser close method called) if (and only if) JsonParser.Feature.AUTO_CLOSE_SOURCE is enabled.

      Parameters:
      r - Reader to use for reading JSON content to parse
      Returns:
      Parser constructed
      Throws:
      IOException - if parser initialization fails due to I/O (read) problem
      JsonParseException - if parser initialization fails due to content decoding problem

    • createJsonParser

      @Deprecated public JsonParser createJsonParser(byte[] data) throws IOException, JsonParseException
      Deprecated.
      Since 2.2, use createParser(byte[]) instead.
      Method for constructing parser for parsing the contents of given byte array.
      Parameters:
      data - Input content to parse
      Returns:
      Parser constructed
      Throws:
      IOException - if parser initialization fails due to I/O (read) problem
      JsonParseException - if parser initialization fails due to content decoding problem

    • createJsonParser

      @Deprecated public JsonParser createJsonParser(byte[] data, int offset, int len) throws IOException, JsonParseException
      Deprecated.
      Since 2.2, use createParser(byte[],int,int) instead.
      Method for constructing parser for parsing the contents of given byte array.
      Parameters:
      data - Buffer that contains data to parse
      offset - Offset of the first data byte within buffer
      len - Length of contents to parse within buffer
      Returns:
      Parser constructed
      Throws:
      IOException - if parser initialization fails due to I/O (read) problem
      JsonParseException - if parser initialization fails due to content decoding problem

    • createJsonParser

      @Deprecated public JsonParser createJsonParser(String content) throws IOException, JsonParseException
      Deprecated.
      Since 2.2, use createParser(String) instead.
      Method for constructing parser for parsing contents of given String.
      Parameters:
      content - Input content to parse
      Returns:
      Parser constructed
      Throws:
      IOException - if parser initialization fails due to I/O (read) problem
      JsonParseException - if parser initialization fails due to content decoding problem

    • createJsonGenerator

      @Deprecated public JsonGenerator createJsonGenerator(OutputStream out, JsonEncoding enc) throws IOException
      Deprecated.
      Since 2.2, use createGenerator(OutputStream, JsonEncoding) instead.
      Method for constructing JSON generator for writing JSON content using specified output stream. Encoding to use must be specified, and needs to be one of available types (as per JSON specification).

      Underlying stream is NOT owned by the generator constructed, so that generator will NOT close the output stream when JsonGenerator.close() is called (unless auto-closing feature, JsonGenerator.Feature.AUTO_CLOSE_TARGET is enabled). Using application needs to close it explicitly if this is the case.

      Note: there are formats that use fixed encoding (like most binary data formats) and that ignore passed in encoding.

      Parameters:
      out - OutputStream to use for writing JSON content
      enc - Character encoding to use
      Returns:
      Generator constructed
      Throws:
      IOException - if parser initialization fails due to I/O (write) problem

    • createJsonGenerator

      @Deprecated public JsonGenerator createJsonGenerator(Writer out) throws IOException
      Deprecated.
      Since 2.2, use createGenerator(Writer) instead.
      Method for constructing JSON generator for writing JSON content using specified Writer.

      Underlying stream is NOT owned by the generator constructed, so that generator will NOT close the Reader when JsonGenerator.close() is called (unless auto-closing feature, JsonGenerator.Feature.AUTO_CLOSE_TARGET is enabled). Using application needs to close it explicitly.

      Parameters:
      out - Writer to use for writing JSON content
      Returns:
      Generator constructed
      Throws:
      IOException - if parser initialization fails due to I/O (write) problem

    • createJsonGenerator

      @Deprecated public JsonGenerator createJsonGenerator(OutputStream out) throws IOException
      Deprecated.
      Since 2.2, use createGenerator(OutputStream) instead.
      Convenience method for constructing generator that uses default encoding of the format (UTF-8 for JSON and most other data formats).

      Note: there are formats that use fixed encoding (like most binary data formats).

      Parameters:
      out - OutputStream to use for writing JSON content
      Returns:
      Generator constructed
      Throws:
      IOException - if parser initialization fails due to I/O (write) problem

    • _createParser

      protected JsonParser _createParser(InputStream in, IOContext ctxt) throws IOException
      Overridable factory method that actually instantiates desired parser given InputStream and context object.

      This method is specifically designed to remain compatible between minor versions so that sub-classes can count on it being called as expected. That is, it is part of official interface from sub-class perspective, although not a public method available to users of factory implementations.

      Parameters:
      in - InputStream to use for reading content to parse
      ctxt - I/O context to use for parsing
      Returns:
      Parser constructed
      Throws:
      IOException - if parser initialization fails due to I/O (read) problem
      Since:
      2.1

    • _createParser

      protected JsonParser _createParser(Reader r, IOContext ctxt) throws IOException
      Overridable factory method that actually instantiates parser using given Reader object for reading content.

      This method is specifically designed to remain compatible between minor versions so that sub-classes can count on it being called as expected. That is, it is part of official interface from sub-class perspective, although not a public method available to users of factory implementations.

      Parameters:
      r - Reader to use for reading content to parse
      ctxt - I/O context to use for parsing
      Returns:
      Actual parser to use
      Throws:
      IOException - if parser initialization fails due to I/O (read) problem
      Since:
      2.1

    • _createParser

      protected JsonParser _createParser(char[] data, int offset, int len, IOContext ctxt, boolean recyclable) throws IOException
      Overridable factory method that actually instantiates parser using given char[] object for accessing content.
      Parameters:
      data - Buffer that contains content to parse
      offset - Offset to the first character of data to parse
      len - Number of characters within buffer to parse
      ctxt - I/O context to use for parsing
      recyclable - Whether input buffer is recycled by the factory
      Returns:
      Actual parser to use
      Throws:
      IOException - if parser initialization fails due to I/O (read) problem
      Since:
      2.4

    • _createParser

      protected JsonParser _createParser(byte[] data, int offset, int len, IOContext ctxt) throws IOException
      Overridable factory method that actually instantiates parser using given Reader object for reading content passed as raw byte array.

      This method is specifically designed to remain compatible between minor versions so that sub-classes can count on it being called as expected. That is, it is part of official interface from sub-class perspective, although not a public method available to users of factory implementations.

      Parameters:
      data - Buffer that contains content to parse
      offset - Offset to the first character of data to parse
      len - Number of characters within buffer to parse
      ctxt - I/O context to use for parsing
      Returns:
      Actual parser to use
      Throws:
      IOException - if parser initialization fails due to I/O (read) problem

    • _createParser

      protected JsonParser _createParser(DataInput input, IOContext ctxt) throws IOException
      Optional factory method, expected to be overridden
      Parameters:
      input - DataInput to use for reading content to parse
      ctxt - I/O context to use for parsing
      Returns:
      Actual parser to use
      Throws:
      IOException - if parser initialization fails due to I/O (read) problem
      Since:
      2.8

    • _createGenerator

      protected JsonGenerator _createGenerator(Writer out, IOContext ctxt) throws IOException
      Overridable factory method that actually instantiates generator for given Writer and context object.

      This method is specifically designed to remain compatible between minor versions so that sub-classes can count on it being called as expected. That is, it is part of official interface from sub-class perspective, although not a public method available to users of factory implementations.

      Parameters:
      out - Writer underlying writer to write generated content to
      ctxt - I/O context to use
      Returns:
      This factory instance (to allow call chaining)
      Throws:
      IOException - if parser initialization fails due to I/O (write) problem

    • _createUTF8Generator

      protected JsonGenerator _createUTF8Generator(OutputStream out, IOContext ctxt) throws IOException
      Overridable factory method that actually instantiates generator for given OutputStream and context object, using UTF-8 encoding.

      This method is specifically designed to remain compatible between minor versions so that sub-classes can count on it being called as expected. That is, it is part of official interface from sub-class perspective, although not a public method available to users of factory implementations.

      Parameters:
      out - OutputStream underlying writer to write generated content to
      ctxt - I/O context to use
      Returns:
      This factory instance (to allow call chaining)
      Throws:
      IOException - if parser initialization fails due to I/O (write) problem

    • _createWriter

      protected Writer _createWriter(OutputStream out, JsonEncoding enc, IOContext ctxt) throws IOException
      Throws:
      IOException

    • _decorate

      protected final InputStream _decorate(InputStream in, IOContext ctxt) throws IOException
      Throws:
      IOException

    • _decorate

      protected final Reader _decorate(Reader in, IOContext ctxt) throws IOException
      Throws:
      IOException

    • _decorate

      protected final DataInput _decorate(DataInput in, IOContext ctxt) throws IOException
      Throws:
      IOException

    • _decorate

      protected final OutputStream _decorate(OutputStream out, IOContext ctxt) throws IOException
      Throws:
      IOException

    • _decorate

      protected final Writer _decorate(Writer out, IOContext ctxt) throws IOException
      Throws:
      IOException

    • _decorate

      protected JsonGenerator _decorate(JsonGenerator g)
      Helper method for applying all registered JsonGeneratorDecorators on freshly constructed JsonGenerator.
      Parameters:
      g - Generator constructed that is to be decorated
      Returns:
      Generator after applying all registered JsonGeneratorDecorators.
      Since:
      2.16

    • _getBufferRecycler

      public BufferRecycler _getBufferRecycler()
      Method used by factory to create buffer recycler instances for parsers and generators.

      Note: only public to give access for ObjectMapper

      Returns:
      Buffer recycler instance to use

    • _getRecyclerPool

      public RecyclerPool<BufferRecycler> _getRecyclerPool()
      Accessor for getting access to RecyclerPool for getting BufferRecycler instance to use.
      Returns:
      RecyclerPool to use.
      Since:
      2.16

    • _createContext

      protected IOContext _createContext(ContentReference contentRef, boolean resourceManaged)
      Overridable factory method that actually instantiates desired context object.
      Parameters:
      contentRef - Source/target reference to use for diagnostics, exception messages
      resourceManaged - Whether input/output buffer is managed by this factory or not
      Returns:
      I/O context created

    • _createContext

      @Deprecated protected IOContext _createContext(Object rawContentRef, boolean resourceManaged)
      Deprecated.
      Since 2.13
      Deprecated variant of _createContext(Object, boolean)
      Parameters:
      rawContentRef - "Raw" source/target reference
      resourceManaged - Whether input/output buffer is managed by this factory or not
      Returns:
      I/O context created

    • _createNonBlockingContext

      protected IOContext _createNonBlockingContext(Object srcRef)
      Overridable factory method that actually instantiates desired context object for async (non-blocking) parsing
      Parameters:
      srcRef - Source reference to use for diagnostics, exception messages
      Returns:
      I/O context created
      Since:
      2.9.7

    • _createContentReference

      protected ContentReference _createContentReference(Object contentAccessor)
      Overridable factory method for constructing ContentReference to pass to parser or generator being created; used in cases where no offset or length is applicable (either irrelevant, or full contents assumed).
      Parameters:
      contentAccessor - Access to underlying content; depends on source/target, as well as content representation
      Returns:
      Reference instance to use
      Since:
      2.13

    • _createContentReference

      protected ContentReference _createContentReference(Object contentAccessor, int offset, int length)
      Overridable factory method for constructing ContentReference to pass to parser or generator being created; used in cases where content is available in a static buffer with relevant offset and length (mostly when reading from byte[], char[] or String).
      Parameters:
      contentAccessor - Access to underlying content; depends on source/target, as well as content representation
      offset - Offset of content
      length - Length of content
      Returns:
      Reference instance to use
      Since:
      2.13