public class SmileGenerator extends JsonGeneratorBase
JsonGenerator
implementation for the experimental "Binary JSON Infoset".Modifier and Type | Class and Description |
---|---|
static class |
SmileGenerator.Feature
Enumeration that defines all togglable features for Smile generators.
|
protected static class |
SmileGenerator.SharedStringNode
Helper class used for keeping track of possibly shareable String
references (for field names and/or short String values)
|
Modifier and Type | Field and Description |
---|---|
protected boolean |
_bufferRecyclable
Flag that indicates whether the output buffer is recycable (and
needs to be returned to recycler once we are done) or not.
|
protected int |
_bytesWritten
Let's keep track of how many bytes have been output, may prove useful
when debugging.
|
protected char[] |
_charBuffer
Intermediate buffer in which characters of a String are copied
before being encoded.
|
protected int |
_charBufferLength |
protected IOContext |
_ioContext |
protected OutputStream |
_out |
protected byte[] |
_outputBuffer
Intermediate buffer in which contents are buffered before
being written using
_out . |
protected int |
_outputEnd
Offset to index after the last valid index in
_outputBuffer . |
protected int |
_outputTail
Pointer to the next available byte in
_outputBuffer |
protected int |
_seenNameCount
Number of entries in
_seenNames ; -1 if no shared name
detection is enabled |
protected SmileGenerator.SharedStringNode[] |
_seenNames
Raw data structure used for checking whether field name to
write can be output using back reference or not.
|
protected int |
_seenStringValueCount
Number of entries in
_seenStringValues ; -1 if no shared text value
detection is enabled |
protected SmileGenerator.SharedStringNode[] |
_seenStringValues
Raw data structure used for checking whether String value to
write can be output using back reference or not.
|
protected SmileBufferRecycler<SmileGenerator.SharedStringNode> |
_smileBufferRecycler
Helper object used for low-level recycling of Smile-generator
specific buffers.
|
protected int |
_smileFeatures
Bit flag composed of bits that indicate which
SmileGenerator.Feature s
are enabled. |
protected static ThreadLocal<SoftReference<SmileBufferRecycler<SmileGenerator.SharedStringNode>>> |
_smileRecyclerRef
This
ThreadLocal contains a SoftReference
to a buffer recycler used to provide a low-cost
buffer recycling for Smile-specific buffers. |
protected static long |
MAX_INT_AS_LONG |
protected static long |
MIN_INT_AS_LONG |
protected static int |
SURR1_FIRST |
protected static int |
SURR1_LAST |
protected static int |
SURR2_FIRST |
protected static int |
SURR2_LAST |
protected static byte |
TOKEN_BYTE_BIG_DECIMAL |
protected static byte |
TOKEN_BYTE_BIG_INTEGER |
protected static byte |
TOKEN_BYTE_FLOAT_32 |
protected static byte |
TOKEN_BYTE_FLOAT_64 |
protected static byte |
TOKEN_BYTE_INT_32 |
protected static byte |
TOKEN_BYTE_INT_64 |
protected static byte |
TOKEN_BYTE_LONG_STRING_ASCII |
protected static byte |
TOKEN_BYTE_LONG_STRING_UNICODE |
_cfgNumbersAsStrings, _closed, _features, _objectCodec, _writeContext
_cfgPrettyPrinter
Constructor and Description |
---|
SmileGenerator(IOContext ctxt,
int jsonFeatures,
int smileFeatures,
ObjectCodec codec,
OutputStream out) |
SmileGenerator(IOContext ctxt,
int jsonFeatures,
int smileFeatures,
ObjectCodec codec,
OutputStream out,
byte[] outputBuffer,
int offset,
boolean bufferRecyclable) |
Modifier and Type | Method and Description |
---|---|
protected void |
_flushBuffer() |
protected UnsupportedOperationException |
_notSupported() |
protected void |
_releaseBuffers() |
protected static SmileBufferRecycler<SmileGenerator.SharedStringNode> |
_smileBufferRecycler() |
protected void |
_verifyValueWrite(String typeMsg) |
protected void |
_write7BitBinaryWithLength(byte[] data,
int offset,
int len) |
protected void |
_writeFieldName(SerializableString name) |
protected void |
_writeFieldNameUnicode(SerializableString name,
byte[] bytes) |
void |
close()
Method called to close this generator, so that no more content
can be written.
|
SmileGenerator |
configure(SmileGenerator.Feature f,
boolean state) |
SmileGenerator |
disable(SmileGenerator.Feature f) |
SmileGenerator |
enable(SmileGenerator.Feature f) |
void |
flush()
Method called to flush any buffered content to the underlying
target (output stream, writer), and to flush the target itself
as well.
|
Object |
getOutputTarget()
Method that can be used to get access to object that is used
as target for generated output; this is usually either
OutputStream or Writer , depending on what
generator was constructed with. |
boolean |
isEnabled(SmileGenerator.Feature f) |
protected long |
outputOffset()
Method for accessing offset of the next byte within the whole output
stream that this generator has produced.
|
JsonGenerator |
setPrettyPrinter(PrettyPrinter pp)
No way (or need) to indent anything, so let's block any attempts.
|
JsonGenerator |
useDefaultPrettyPrinter()
No way (or need) to indent anything, so let's block any attempts.
|
void |
writeBinary(Base64Variant b64variant,
byte[] data,
int offset,
int len)
Method that will output given chunk of binary data as base64
encoded, as a complete String value (surrounded by double quotes).
|
void |
writeBoolean(boolean state)
Method for outputting literal Json boolean value (one of
Strings 'true' and 'false').
|
void |
writeBytes(byte[] data,
int offset,
int len)
Method for directly inserting specified bytes in output at
current position.
|
void |
writeEndArray()
Method for writing closing marker of a JSON Array value
(character ']'; plus possible white space decoration
if pretty-printing is enabled).
|
void |
writeEndObject()
Method for writing closing marker of a JSON Object value
(character '}'; plus possible white space decoration
if pretty-printing is enabled).
|
void |
writeFieldName(SerializableString name)
Method similar to
JsonGenerator.writeFieldName(String) , main difference
being that it may perform better as some of processing (such as
quoting of certain characters, or encoding into external encoding
if supported by generator) can be done just once and reused for
later calls. |
void |
writeFieldName(SerializedString name)
Method similar to
JsonGenerator.writeFieldName(String) , main difference
being that it may perform better as some of processing (such as
quoting of certain characters, or encoding into external encoding
if supported by generator) can be done just once and reused for
later calls. |
void |
writeFieldName(String name)
Method for writing a field name (JSON String surrounded by
double quotes: syntactically identical to a JSON String value),
possibly decorated by white space if pretty-printing is enabled.
|
void |
writeHeader()
Method that can be called to explicitly write Smile document header.
|
void |
writeNull()
Method for outputting literal Json null value.
|
void |
writeNumber(BigDecimal dec)
Method for outputting indicate Json numeric value.
|
void |
writeNumber(BigInteger v)
Method for outputting given value as Json number.
|
void |
writeNumber(double d)
Method for outputting indicate Json numeric value.
|
void |
writeNumber(float f)
Method for outputting indicate Json numeric value.
|
void |
writeNumber(int i)
Method for outputting given value as Json number.
|
void |
writeNumber(long l)
Method for outputting given value as Json number.
|
void |
writeNumber(String encodedValue)
Write method that can be used for custom numeric types that can
not be (easily?) converted to "standard" Java number types.
|
void |
writeRaw(byte b)
Method for directly inserting specified byte in output at
current position.
|
void |
writeRaw(char c)
Method that will force generator to copy
input text verbatim with no modifications (including
that no escaping is done and no separators are added even
if context [array, object] would otherwise require such).
|
void |
writeRaw(char[] text,
int offset,
int len)
Method that will force generator to copy
input text verbatim with no modifications (including
that no escaping is done and no separators are added even
if context [array, object] would otherwise require such).
|
void |
writeRaw(String text)
Method that will force generator to copy
input text verbatim with no modifications (including
that no escaping is done and no separators are added even
if context [array, object] would otherwise require such).
|
void |
writeRaw(String text,
int offset,
int len)
Method that will force generator to copy
input text verbatim with no modifications (including
that no escaping is done and no separators are added even
if context [array, object] would otherwise require such).
|
void |
writeRawUTF8String(byte[] text,
int offset,
int len)
Method similar to
JsonGenerator.writeString(String) but that takes as
its input a UTF-8 encoded String that is to be output as-is, without additional
escaping (type of which depends on data format; backslashes for JSON). |
void |
writeRawValue(char[] text,
int offset,
int len) |
void |
writeRawValue(String text)
Method that will force generator to copy
input text verbatim without any modifications, but assuming
it must constitute a single legal JSON value (number, string,
boolean, null, Array or List).
|
void |
writeRawValue(String text,
int offset,
int len) |
void |
writeStartArray()
Method for writing starting marker of a JSON Array value
(character '['; plus possible white space decoration
if pretty-printing is enabled).
|
void |
writeStartObject()
Method for writing starting marker of a JSON Object value
(character '{'; plus possible white space decoration
if pretty-printing is enabled).
|
void |
writeString(char[] text,
int offset,
int len)
Method for outputting a String value.
|
void |
writeString(SerializableString sstr)
Method similar to
JsonGenerator.writeString(String) , but that takes
SerializableString which can make this potentially
more efficient to call as generator may be able to reuse
quoted and/or encoded representation. |
void |
writeString(String text)
Method for outputting a String value.
|
void |
writeStringField(String fieldName,
String value)
Convenience method for outputting a field entry ("member")
that has a String value.
|
void |
writeUTF8String(byte[] text,
int offset,
int len)
Method similar to
JsonGenerator.writeString(String) but that takes as its input
a UTF-8 encoded String which has not been escaped using whatever
escaping scheme data format requires (for JSON that is backslash-escaping
for control characters and double-quotes; for other formats something else). |
_cantHappen, _reportError, _reportUnsupportedOperation, _throwInternal, _writeEndArray, _writeEndObject, _writeSimpleObject, _writeStartArray, _writeStartObject, copyCurrentEvent, copyCurrentStructure, disable, enable, getCodec, getOutputContext, isClosed, isEnabled, setCodec, version, writeObject, writeTree
canUseSchema, configure, disableFeature, enableFeature, getCharacterEscapes, getHighestEscapedChar, isFeatureEnabled, setCharacterEscapes, setFeature, setHighestNonEscapedChar, setSchema, writeArrayFieldStart, writeBinary, writeBinary, writeBinaryField, writeBooleanField, writeNullField, writeNumberField, writeNumberField, writeNumberField, writeNumberField, writeNumberField, writeObjectField, writeObjectFieldStart
protected static final byte TOKEN_BYTE_LONG_STRING_ASCII
protected static final byte TOKEN_BYTE_LONG_STRING_UNICODE
protected static final byte TOKEN_BYTE_INT_32
protected static final byte TOKEN_BYTE_INT_64
protected static final byte TOKEN_BYTE_BIG_INTEGER
protected static final byte TOKEN_BYTE_FLOAT_32
protected static final byte TOKEN_BYTE_FLOAT_64
protected static final byte TOKEN_BYTE_BIG_DECIMAL
protected static final int SURR1_FIRST
protected static final int SURR1_LAST
protected static final int SURR2_FIRST
protected static final int SURR2_LAST
protected static final long MIN_INT_AS_LONG
protected static final long MAX_INT_AS_LONG
protected final IOContext _ioContext
protected final OutputStream _out
protected int _smileFeatures
SmileGenerator.Feature
s
are enabled.protected final SmileBufferRecycler<SmileGenerator.SharedStringNode> _smileBufferRecycler
protected byte[] _outputBuffer
_out
.protected int _outputTail
_outputBuffer
protected final int _outputEnd
_outputBuffer
.
Typically same as length of the buffer.protected char[] _charBuffer
protected final int _charBufferLength
protected int _bytesWritten
protected SmileGenerator.SharedStringNode[] _seenNames
protected int _seenNameCount
_seenNames
; -1 if no shared name
detection is enabledprotected SmileGenerator.SharedStringNode[] _seenStringValues
protected int _seenStringValueCount
_seenStringValues
; -1 if no shared text value
detection is enabledprotected boolean _bufferRecyclable
protected static final ThreadLocal<SoftReference<SmileBufferRecycler<SmileGenerator.SharedStringNode>>> _smileRecyclerRef
ThreadLocal
contains a SoftReference
to a buffer recycler used to provide a low-cost
buffer recycling for Smile-specific buffers.public SmileGenerator(IOContext ctxt, int jsonFeatures, int smileFeatures, ObjectCodec codec, OutputStream out)
public SmileGenerator(IOContext ctxt, int jsonFeatures, int smileFeatures, ObjectCodec codec, OutputStream out, byte[] outputBuffer, int offset, boolean bufferRecyclable)
public void writeHeader() throws IOException
SmileFactory
calls this method.IOException
protected static final SmileBufferRecycler<SmileGenerator.SharedStringNode> _smileBufferRecycler()
public JsonGenerator useDefaultPrettyPrinter()
useDefaultPrettyPrinter
in class JsonGeneratorBase
public JsonGenerator setPrettyPrinter(PrettyPrinter pp)
setPrettyPrinter
in class JsonGenerator
public Object getOutputTarget()
JsonGenerator
OutputStream
or Writer
, depending on what
generator was constructed with.
Note that returned value may be null in some cases; including
case where implementation does not want to exposed raw
source to caller.
In cases where output has been decorated, object returned here
is the decorated version; this allows some level of interaction
between users of generator and decorator object.
In general use of this accessor should be considered as "last effort", i.e. only used if no other mechanism is applicable.
getOutputTarget
in class JsonGenerator
public final void writeFieldName(String name) throws IOException, JsonGenerationException
JsonGenerator
Field names can only be written in Object context (check out JSON specification for details), when field name is expected (field names alternate with values).
writeFieldName
in class JsonGenerator
IOException
JsonGenerationException
public final void writeFieldName(SerializedString name) throws IOException, JsonGenerationException
JsonGenerator
JsonGenerator.writeFieldName(String)
, main difference
being that it may perform better as some of processing (such as
quoting of certain characters, or encoding into external encoding
if supported by generator) can be done just once and reused for
later calls.
Default implementation simple uses unprocessed name container in serialized String; implementations are strongly encouraged to make use of more efficient methods argument object has.
writeFieldName
in class JsonGenerator
IOException
JsonGenerationException
public final void writeFieldName(SerializableString name) throws IOException, JsonGenerationException
JsonGenerator
JsonGenerator.writeFieldName(String)
, main difference
being that it may perform better as some of processing (such as
quoting of certain characters, or encoding into external encoding
if supported by generator) can be done just once and reused for
later calls.
Default implementation simple uses unprocessed name container in serialized String; implementations are strongly encouraged to make use of more efficient methods argument object has.
writeFieldName
in class JsonGenerator
IOException
JsonGenerationException
public final void writeStringField(String fieldName, String value) throws IOException, JsonGenerationException
JsonGenerator
writeFieldName(fieldName); writeString(value);
Note: many performance-sensitive implementations override this method
writeStringField
in class JsonGenerator
IOException
JsonGenerationException
public SmileGenerator enable(SmileGenerator.Feature f)
public SmileGenerator disable(SmileGenerator.Feature f)
public final boolean isEnabled(SmileGenerator.Feature f)
public SmileGenerator configure(SmileGenerator.Feature f, boolean state)
public void writeRaw(byte b) throws IOException, JsonGenerationException
NOTE: only use this method if you really know what you are doing.
IOException
JsonGenerationException
public void writeBytes(byte[] data, int offset, int len) throws IOException
NOTE: only use this method if you really know what you are doing.
IOException
public final void writeStartArray() throws IOException, JsonGenerationException
JsonGenerator
Array values can be written in any context where values are allowed: meaning everywhere except for when a field name is expected.
writeStartArray
in class JsonGeneratorBase
IOException
JsonGenerationException
public final void writeEndArray() throws IOException, JsonGenerationException
JsonGenerator
Marker can be written if the innermost structured type is Array.
writeEndArray
in class JsonGeneratorBase
IOException
JsonGenerationException
public final void writeStartObject() throws IOException, JsonGenerationException
JsonGenerator
Object values can be written in any context where values are allowed: meaning everywhere except for when a field name is expected.
writeStartObject
in class JsonGeneratorBase
IOException
JsonGenerationException
public final void writeEndObject() throws IOException, JsonGenerationException
JsonGenerator
Marker can be written if the innermost structured type is Object, and the last written event was either a complete value, or START-OBJECT marker (see JSON specification for more details).
writeEndObject
in class JsonGeneratorBase
IOException
JsonGenerationException
protected final void _writeFieldName(SerializableString name) throws IOException, JsonGenerationException
IOException
JsonGenerationException
protected final void _writeFieldNameUnicode(SerializableString name, byte[] bytes) throws IOException, JsonGenerationException
IOException
JsonGenerationException
public void writeString(String text) throws IOException, JsonGenerationException
JsonGenerator
writeString
in class JsonGenerator
IOException
JsonGenerationException
public void writeString(char[] text, int offset, int len) throws IOException, JsonGenerationException
JsonGenerator
writeString
in class JsonGenerator
IOException
JsonGenerationException
public final void writeString(SerializableString sstr) throws IOException, JsonGenerationException
JsonGenerator
JsonGenerator.writeString(String)
, but that takes
SerializableString
which can make this potentially
more efficient to call as generator may be able to reuse
quoted and/or encoded representation.
Default implementation just calls JsonGenerator.writeString(String)
;
sub-classes should override it with more efficient implementation
if possible.
writeString
in class JsonGenerator
IOException
JsonGenerationException
public void writeRawUTF8String(byte[] text, int offset, int len) throws IOException, JsonGenerationException
JsonGenerator
JsonGenerator.writeString(String)
but that takes as
its input a UTF-8 encoded String that is to be output as-is, without additional
escaping (type of which depends on data format; backslashes for JSON).
However, quoting that data format requires (like double-quotes for JSON) will be added
around the value if and as necessary.
Note that some backends may choose not to support this method: for
example, if underlying destination is a Writer
using this method would require UTF-8 decoding.
If so, implementation may instead choose to throw a
UnsupportedOperationException
due to ineffectiveness
of having to decode input.
writeRawUTF8String
in class JsonGenerator
IOException
JsonGenerationException
public final void writeUTF8String(byte[] text, int offset, int len) throws IOException, JsonGenerationException
JsonGenerator
JsonGenerator.writeString(String)
but that takes as its input
a UTF-8 encoded String which has not been escaped using whatever
escaping scheme data format requires (for JSON that is backslash-escaping
for control characters and double-quotes; for other formats something else).
This means that textual JSON backends need to check if value needs
JSON escaping, but otherwise can just be copied as is to output.
Also, quoting that data format requires (like double-quotes for JSON) will be added
around the value if and as necessary.
Note that some backends may choose not to support this method: for
example, if underlying destination is a Writer
using this method would require UTF-8 decoding.
In this case
generator implementation may instead choose to throw a
UnsupportedOperationException
due to ineffectiveness
of having to decode input.
writeUTF8String
in class JsonGenerator
IOException
JsonGenerationException
public void writeRaw(String text) throws IOException, JsonGenerationException
JsonGenerator
JsonGenerator.writeRawValue(String)
instead.
Note that not all generator implementations necessarily support
such by-pass methods: those that do not will throw
UnsupportedOperationException
.
writeRaw
in class JsonGenerator
IOException
JsonGenerationException
public void writeRaw(String text, int offset, int len) throws IOException, JsonGenerationException
JsonGenerator
JsonGenerator.writeRawValue(String)
instead.
Note that not all generator implementations necessarily support
such by-pass methods: those that do not will throw
UnsupportedOperationException
.
writeRaw
in class JsonGenerator
IOException
JsonGenerationException
public void writeRaw(char[] text, int offset, int len) throws IOException, JsonGenerationException
JsonGenerator
JsonGenerator.writeRawValue(String)
instead.
Note that not all generator implementations necessarily support
such by-pass methods: those that do not will throw
UnsupportedOperationException
.
writeRaw
in class JsonGenerator
IOException
JsonGenerationException
public void writeRaw(char c) throws IOException, JsonGenerationException
JsonGenerator
JsonGenerator.writeRawValue(String)
instead.
Note that not all generator implementations necessarily support
such by-pass methods: those that do not will throw
UnsupportedOperationException
.
writeRaw
in class JsonGenerator
IOException
JsonGenerationException
public void writeRawValue(String text) throws IOException, JsonGenerationException
JsonGenerator
writeRawValue
in class JsonGeneratorBase
IOException
JsonGenerationException
public void writeRawValue(String text, int offset, int len) throws IOException, JsonGenerationException
writeRawValue
in class JsonGeneratorBase
IOException
JsonGenerationException
public void writeRawValue(char[] text, int offset, int len) throws IOException, JsonGenerationException
writeRawValue
in class JsonGeneratorBase
IOException
JsonGenerationException
public void writeBinary(Base64Variant b64variant, byte[] data, int offset, int len) throws IOException, JsonGenerationException
JsonGenerator
Note: because Json Strings can not contain unescaped linefeeds,
if linefeeds are included (as per last argument), they must be
escaped. This adds overhead for decoding without improving
readability.
Alternatively if linefeeds are not included,
resulting String value may violate the requirement of base64
RFC which mandates line-length of 76 characters and use of
linefeeds. However, all JsonParser
implementations
are required to accept such "long line base64"; as do
typical production-level base64 decoders.
writeBinary
in class JsonGenerator
b64variant
- Base64 variant to use: defines details such as
whether padding is used (and if so, using which character);
what is the maximum line length before adding linefeed,
and also the underlying alphabet to use.IOException
JsonGenerationException
public void writeBoolean(boolean state) throws IOException, JsonGenerationException
JsonGenerator
writeBoolean
in class JsonGenerator
IOException
JsonGenerationException
public void writeNull() throws IOException, JsonGenerationException
JsonGenerator
writeNull
in class JsonGenerator
IOException
JsonGenerationException
public void writeNumber(int i) throws IOException, JsonGenerationException
JsonGenerator
writeNumber
in class JsonGenerator
IOException
JsonGenerationException
public void writeNumber(long l) throws IOException, JsonGenerationException
JsonGenerator
writeNumber
in class JsonGenerator
IOException
JsonGenerationException
public void writeNumber(BigInteger v) throws IOException, JsonGenerationException
JsonGenerator
writeNumber
in class JsonGenerator
IOException
JsonGenerationException
public void writeNumber(double d) throws IOException, JsonGenerationException
JsonGenerator
writeNumber
in class JsonGenerator
IOException
JsonGenerationException
public void writeNumber(float f) throws IOException, JsonGenerationException
JsonGenerator
writeNumber
in class JsonGenerator
IOException
JsonGenerationException
public void writeNumber(BigDecimal dec) throws IOException, JsonGenerationException
JsonGenerator
writeNumber
in class JsonGenerator
IOException
JsonGenerationException
public void writeNumber(String encodedValue) throws IOException, JsonGenerationException, UnsupportedOperationException
JsonGenerator
JsonGenerator.writeString(java.lang.String)
method can not be used; nor
JsonGenerator.writeRaw(java.lang.String)
because that does not properly handle
value separators needed in Array or Object contexts.
Note: because of lack of type safety, some generator
implementations may not be able to implement this
method. For example, if a binary json format is used,
it may require type information for encoding; similarly
for generator-wrappers around Java objects or Json nodes.
If implementation does not implement this method,
it needs to throw UnsupportedOperationException
.
writeNumber
in class JsonGenerator
IOException
JsonGenerationException
UnsupportedOperationException
protected final void _verifyValueWrite(String typeMsg) throws IOException, JsonGenerationException
_verifyValueWrite
in class JsonGeneratorBase
IOException
JsonGenerationException
public final void flush() throws IOException
JsonGenerator
flush
in class JsonGeneratorBase
IOException
public void close() throws IOException
JsonGenerator
Whether the underlying target (stream, writer) gets closed depends
on whether this generator either manages the target (i.e. is the
only one with access to the target -- case if caller passes a
reference to the resource such as File, but not stream); or
has feature JsonGenerator.Feature.AUTO_CLOSE_TARGET
enabled.
If either of above is true, the target is also closed. Otherwise
(not managing, feature not enabled), target is not closed.
close
in interface Closeable
close
in interface AutoCloseable
close
in class JsonGeneratorBase
IOException
protected void _write7BitBinaryWithLength(byte[] data, int offset, int len) throws IOException
IOException
protected void _releaseBuffers()
_releaseBuffers
in class JsonGeneratorBase
protected final void _flushBuffer() throws IOException
IOException
protected long outputOffset()
protected UnsupportedOperationException _notSupported()