gudusoft.gsqlparser.sqlcmds

Class TSqlCmdsFlink

Object

gudusoft.gsqlparser.sqlcmds.AbstractSqlCmds

gudusoft.gsqlparser.sqlcmds.TSqlCmdsFlink

All Implemented Interfaces:

ISqlCmds

public class TSqlCmdsFlink
extends AbstractSqlCmds

Apache Flink SQL command resolver. Based on SparkSQL implementation with Flink-specific additions.

Since:

3.2.0.0

Field Summary

Fields inherited from class gudusoft.gsqlparser.sqlcmds.AbstractSqlCmds

gnewsqlstatementtype, initialized, initLock, sqlCmdList, vendor

Constructor Summary

Constructors

Constructor and Description
TSqlCmdsFlink()

Method Summary

Modifier and Type	Method and Description
protected String	getToken1Str(int token1) Get the string representation for vendor-specific token codes.
protected void	initializeCommands() Initialize vendor-specific commands.
TCustomSqlStatement	issql(TSourceToken token, EFindSqlStateType state, TCustomSqlStatement currentStatement) Identifies the SQL statement type from a token stream.

Methods inherited from class gudusoft.gsqlparser.sqlcmds.AbstractSqlCmds

addCmd, addCmd, addCmd, addCmd, addCmd, addCmd, addCmd, addCmd, ensureInitialized, findcte, finddbcmd, getSqlCmdList, getStatementTypeForToken, getVendor

Methods inherited from class Object

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

Constructor Detail

TSqlCmdsFlink

public TSqlCmdsFlink()

Method Detail

initializeCommands

protected void initializeCommands()

Description copied from class: AbstractSqlCmds

Initialize vendor-specific commands. Subclasses must implement this to populate sqlCmdList.

Specified by:

initializeCommands in class AbstractSqlCmds

getToken1Str

protected String getToken1Str(int token1)

Description copied from class: AbstractSqlCmds

Get the string representation for vendor-specific token codes. Subclasses should override this method to provide mappings for vendor-specific reserved words (tokens > TBaseType.rrw_abort).

Overrides:

getToken1Str in class AbstractSqlCmds

Parameters:

token1 - Token code

Returns:

String representation of the token, or null if not applicable

issql

public TCustomSqlStatement issql(TSourceToken token,
                                 EFindSqlStateType state,
                                 TCustomSqlStatement currentStatement)

Description copied from interface: ISqlCmds

Identifies the SQL statement type from a token stream. This method is called repeatedly during parsing to identify statement boundaries and types in complex SQL scripts.

Parameters:

token - Current token being analyzed

state - Current parsing state (start, in body, or in exception)

currentStatement - Current statement being built (may be modified)

Returns:

The identified or modified SQL statement