com.github.plokhotnyuk.jsoniter_scala.core

A JsonCodec[A] instance is a universal codec for JSON values and keys.

BEWARE: Minimize usage of JsonCodec[A] due to possible creation of the scalability limit on the JDK level, for more info see:

• https://bugs.openjdk.org/browse/JDK-8180450
• https://github.com/netty/netty/search?q=JDK-8180450&type=issues
• https://redhatperf.github.io/post/type-check-scalability-issue
• https://netflixtechblog.com/seeing-through-hardware-counters-a-journey-to-threefold-performance-increase-2721924a2822

A JsonKeyCodec[A] instance has the ability to decode and encode JSON keys to/from values of type A, potentially failing with an error if the JSON input is not a key or does not encode a value of the given type or A cannot be encoded properly according to RFC-8259 requirements.

A JsonValueCodec[A] instance has the ability to decode and encode JSON values to/from values of type A, potentially failing with an error if the JSON content does not encode a value of the given type or A cannot be encoded properly according to RFC-8259 requirements.

Configuration for com.github.plokhotnyuk.jsoniter_scala.core.JsonReader that contains flags for tuning of parsing exceptions and preferred sizes for internal buffers that are created on the reader instantiation and reused in runtime for parsing of messages.
All configuration params already initialized by recommended default values, but in some cases they should be altered for performance reasons:

• turn off stack traces for parsing exceptions to greatly reduce impact on performance for cases when exceptions can be not exceptional (e.g. under DoS attacks over open to the world systems), see more details here: https://shipilev.net/blog/2014/exceptional-performance/

• turn off appending of hex dump to minimize length of exception message

• increase preferred size of an internal byte buffer for parsing from java.io.InputStream or java.nio.DirectByteBuffer to reduce allocation rate of grown and then reduced buffers during parsing of large (>16Kb) numbers (including stringified), raw values, or ADT instances with the discriminator field doesn't appear in the beginning of the JSON object

• increase preferred size of an internal char buffer to reduce allocation rate of grown and then reduced buffers when large (>4Kb) string instances need to be parsed including those one which use Base16 or Base64 encodings

Configuration for com.github.plokhotnyuk.jsoniter_scala.core.JsonWriter that contains params for formatting of output JSON and for tuning of preferred size for internal byte buffer that is created on the writer instantiation and reused in runtime for serialization of messages using java.io.OutputStream or java.nio.DirectByteBuffer.
All configuration params already initialized to default values, but in some cases they should be altered:

• turn on pretty printing by specifying of indention step that is greater than 0

• turn on escaping of Unicode characters to serialize with only ASCII characters

• increase preferred size of an internal byte buffer to reduce allocation rate of grown and then reduced buffers when writing to java.io.OutputStream or java.nio.DirectByteBuffer lot of large (>16Kb) scala.math.BigDecimal, scala.math.BigInt or other non escaped ASCII strings written using JsonWriter.writeNonEscapedAsciiKey or JsonWriter.writeNonEscapedAsciiVal

Deserialize JSON content encoded in UTF-8 from a byte array into a value of given A type.

Deserialize JSON content encoded in UTF-8 from a byte array into a value of given A type.

While it is less efficient than parsing from a byte array using pooled readers but it can be safely used when a non-reentrant call is used in the same thread stack.

Deserialize JSON content encoded in UTF-8 from a byte buffer into a value of given A type.

Parsing will start from the current position and will continue until the limit of the provided byte buffer or the value will be parsed before reaching of the limit. In any case the buffer position will be set to the next position after the last read byte.

Deserialize JSON content encoded in UTF-8 from a byte buffer into a value of given A type.

Parsing will start from the current position and will continue until the limit of the provided byte buffer or the value will be parsed before reaching of the limit. In any case the buffer position will be set to the next position after the last read byte.

While it is less efficient than parsing from a byte buffer using pooled readers but it can be safely used when a non-reentrant call is used in the same thread stack.

Deserialize JSON content encoded in UTF-8 from an input stream into a value of given A type.

BEWARE: It is a non-reentrant routine and should not be used in a nested way in the same thread.

Deserialize JSON content encoded in UTF-8 from an input stream into a value of given A type.

While it is less efficient than scanning JSON values from an input stream using pooled readers but it can be safely used when a non-reentrant call is used in the same thread stack.

Deserialize JSON content from a string into a value of given A type.

Deserialize JSON content from a string into a value of given A type.

While it is less efficient than parsing from a string using pooled readers but it can be safely used when a non-reentrant call is used in the same thread stack.

Deserialize JSON content encoded in UTF-8 from a byte array into a value of given A type.

Deserialize JSON content encoded in UTF-8 from a byte array into a value of given A type.

While it is less efficient than parsing from a sub array using pooled readers but it can be safely used when a non-reentrant call is used in the same thread stack.

Deserialize JSON array encoded in UTF-8 from an input stream into its values of given A type.

All parsed values will be passed to consuming function f.

Deserialize JSON array encoded in UTF-8 from an input stream into its values of given A type.

All parsed values will be passed to consuming function f.

While it is less efficient than scanning JSON array from an input stream using pooled readers but it can be safely used when a non-reentrant call is used in the same thread stack.

Deserialize JSON of streaming values encoded in UTF-8 from an input stream into values of given A type.

All parsed values will be passed to consuming function f.

BEWARE: It is a non-reentrant routine and should not be used in a nested way in the same thread.

Deserialize JSON of streaming values encoded in UTF-8 from an input stream into values of given A type.

All parsed values will be passed to consuming function f.

While it is less efficient than scanning JSON values from an input stream using pooled readers but it can be safely used when a non-reentrant call is used in the same thread stack.

Serialize the x argument to a new allocated instance of byte array in UTF-8 encoding of JSON format.

BEWARE: It is a non-reentrant routine and should not be used in a nested way in the same thread.

Serialize the x argument to a new allocated instance of byte array in UTF-8 encoding of JSON format.

While it is less efficient than serialization to a byte array using pooled writers but it can be safely used when a non-reentrant call is used in the same thread stack.

Serialize the x argument to the given instance of byte buffer in UTF-8 encoding of JSON format.

Serialization will start from the current position up to the provided byte buffer limit. On return the byte buffer will has position set to the next position after the last written byte.

BEWARE: It is a non-reentrant routine and should not be used in a nested way in the same thread.

Serialize the x argument to the given instance of byte buffer in UTF-8 encoding of JSON format.

Serialization will start from the current position up to the provided byte buffer limit. On return the byte buffer will has position set to the next position after the last written byte.

While it is less efficient than serialization to a byte buffer pooled writers but it can be safely used when a non-reentrant call is used in the same thread stack.

Serialize the x argument to the provided output stream in UTF-8 encoding of JSON format.

BEWARE: It is a non-reentrant routine and should not be used in a nested way in the same thread.

Serialize the x argument to the provided output stream in UTF-8 encoding of JSON format.

While it is less efficient than serialization to an output stream using pooled writers but it can be safely used with a non-reentrant call is used in the same thread stack.

Serialize the x argument to a string in JSON format.

BEWARE: It is a non-reentrant routine and should not be used in a nested way in the same thread.

Serialize the x argument to a string in JSON format.

While it is less efficient than serialization to a string using pooled writers but it can be safely used when a non-reentrant call is used in the same thread stack.

Serialize the x argument to the given instance of byte array in UTF-8 encoding of JSON format.

BEWARE: It is non-reentrant routine and should not be used in a nested way in the same thread.

Serialize the x argument to the given instance of byte array in UTF-8 encoding of JSON format.

While it is less efficient than serialization to a sub array using pooled writers but it can be safely used when a non-reentrant call is used in the same thread stack.