Package org.apache.drill.exec.store.easy.json.parser

Interface Summary

Interface	Description
ArrayListener	Represents one level within array.
ElementParser	Parser for a JSON element.
ErrorFactory	To avoid coupling the JSON structure parser with Drill's error reporting mechanism, the caller passes in an instance of this error factory which will build the required errors, including filling in caller-specific context.
MessageParser	Optional custom parser for the portion of a JSON message that surrounds the data "payload".
ValueListener	Represents a JSON scalar value, either a direct object field, or level within an array.

Class Summary

Class	Description
AbstractElementParser	Abstract base class for all JSON element parsers.
ArrayParser	Parses a JSON array, which consists of a list of elements, represented by a ValueListener.
ArrayValueParser
ArrayValueParser.LenientArrayValueParser
DummyValueParser	Parse and ignore an unprojected value.
EmptyArrayParser	Represents an empty array: the case where the parser has seen only [], but no array elements which would indicate the type.
FieldParserFactory	Creates a field parser given a field description and an optional field listener.
FullValueParser
JsonStructureOptions	Input to the JSON structure parser which defines guidelines for low-level parsing as well as listeners for higher-level semantics.
JsonStructureParser	Parser for a subset of the jsonlines format.
JsonStructureParser.JsonStructureParserBuilder
JsonValueParser	Parses an arbitrary JSON value (which can be a subtree of any complexity) into a JSON string.
NullValueParser	Parses nulls.
ObjectParser	Parses a JSON object: { name : value ...
ObjectValueParser
RootParser	The root parsers are special: they must detect EOF.
RootParser.EmbeddedArrayParser	Parser for data embedded within a message structure which is encoded as an array of objects.
RootParser.EmbeddedObjectParser	Parser for data embedded within a message structure which is encoded as a single JSON object.
RootParser.RootArrayParser	Parser for a compliant JSON data set which consists of an array at the top level, where each element of the array is a JSON object that represents a data record.
RootParser.RootObjectParser	Parser for a jsonlines-style data set which consists of a series of objects.
ScalarValueParser
ScalarValueParser.SimpleValueParser	Parses true | false | null | integer | float | string | embedded-object and simply passes the value token on to the listener.
ScalarValueParser.TextValueParser	Parses true | false | null | integer | float | string | embedded-object
SimpleMessageParser	A message parser which accepts a path to the data encoded as a slash-separated string.
TokenIterator
TokenIterator.ParserManager
ValueDef	Description of a JSON value as inferred from looking ahead in the JSON stream.
ValueDefFactory	Constructs a ValueDef by looking ahead on the input stream.
ValueParser	Parses a JSON value.

Enum Summary

Enum	Description
ValueDef.JsonType	Description of JSON types as derived from JSON tokens.

Exception Summary

Exception	Description
MessageParser.MessageContextException
TokenIterator.RecoverableJsonException	Internal exception to unwind the stack when a syntax error is detected within a record.