Package com.clickhouse.jdbc.parser

Class ParseHandler

java.lang.Object

com.clickhouse.jdbc.parser.ParseHandler

Direct Known Subclasses:

JdbcParseHandler

public abstract class ParseHandler
extends Object

Constructor Summary

Constructors

Constructor	Description
ParseHandler()

Method Summary

Modifier and Type	Method	Description
String	handleMacro(String name, List<String> parameters)	Handle macro like "#include('/tmp/template.sql')".
String	handleParameter(String cluster, String database, String table, int columnIndex)	Handle parameter.
ClickHouseSqlStatement	handleStatement(String sql, StatementType stmtType, String cluster, String database, String table, String input, String compressAlgorithm, String compressLevel, String format, String file, List<Integer> parameters, Map<String,Integer> positions, Map<String,String> settings, Set<String> tempTables)	Hanlde statemenet.

Methods inherited from class java.lang.Object

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

Constructor Details

ParseHandler

public ParseHandler()

Method Details

handleMacro

public String handleMacro(String name,
 List<String> parameters)

Handle macro like "#include('/tmp/template.sql')".

Parameters:

name - name of the macro

parameters - parameters

Returns:

output of the macro, could be null or empty string

handleParameter

public String handleParameter(String cluster,
 String database,
 String table,
 int columnIndex)

Handle parameter.

Parameters:

cluster - cluster

database - database

table - table

columnIndex - columnIndex(starts from 1 not 0)

Returns:

parameter value

handleStatement

public ClickHouseSqlStatement handleStatement(String sql,
 StatementType stmtType,
 String cluster,
 String database,
 String table,
 String input,
 String compressAlgorithm,
 String compressLevel,
 String format,
 String file,
 List<Integer> parameters,
 Map<String,Integer> positions,
 Map<String,String> settings,
 Set<String> tempTables)

Hanlde statemenet.

Parameters:

sql - sql statement

stmtType - statement type

cluster - cluster

database - database

table - table

compressAlgorithm - compression algorithm

compressLevel - compression level

format - format

input - input

file - infile or outfile

parameters - positions of parameters

positions - keyword positions

settings - settings

tempTables - temporary tables

Returns:

sql statement, or null means no change