org.apache.flink.table.planner.parse

Class ExtendedParser

java.lang.Object

org.apache.flink.table.planner.parse.ExtendedParser

public class ExtendedParser
extends Object

ExtendedParser is used for parsing some special command which can't supported by CalciteParser, e.g. SET key=value may contain special characters in key and value. It's also a good idea to move some parsing strategy here to avoid introducing new reserved keywords.

Field Summary

Fields

Modifier and Type	Field and Description
static ExtendedParser	INSTANCE

Constructor Summary

Constructors

Constructor and Description
ExtendedParser()

Method Summary

Modifier and Type	Method and Description
String[]	getCompletionHints(String statement, int cursor) Returns completion hints for the given statement at the given cursor position.
Optional<Operation>	parse(String statement) Parse the input statement to the Operation.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

INSTANCE

public static final ExtendedParser INSTANCE

Constructor Detail

ExtendedParser

public ExtendedParser()

Method Detail

parse

public Optional<Operation> parse(String statement)

Parse the input statement to the Operation.

Parameters:

statement - the command to evaluate

Returns:

parsed operation that represents the command

getCompletionHints

public String[] getCompletionHints(String statement,
                                   int cursor)

Returns completion hints for the given statement at the given cursor position. The completion happens case insensitively.

Parameters:

statement - Partial or slightly incorrect SQL statement

cursor - cursor position

Returns:

completion hints that fit at the current cursor position