de.uni_leipzig.asv.utils

Class IOWrapper

java.lang.Object

de.uni_leipzig.asv.utils.IOWrapper

All Implemented Interfaces:

IOInterface

public class IOWrapper
extends Object
implements IOInterface

Author:

knorke

Field Summary

Fields inherited from interface de.uni_leipzig.asv.utils.IOInterface

inputEncoding, inputseparator, outputEncoding, outputseparator

Constructor Summary

Constructors

Constructor and Description
IOWrapper()

Method Summary

Methods

Modifier and Type	Method and Description
void	closeOutput() simply close the outputfile you must call this method before the program terminates
ResultSet	execQuery(String query)
IOIterator	getLineIterator() returns the IOIterator to iterate over file data
static void	main(String[] args)
IOIterator	select(String tablename) select all cols from table "tablename" and returns an iterator
IOIterator	select(String tablename, String[] cols) select the "cols" from table "tablename" and returns an iterator
IOIterator	sendInputQuery(String query) iterates over the resultset of a given query please read the IOIteratorInterface code
boolean	sendOutputQuery(String query) send a query to database
void	setupInput(String inputfile) setup the inputfile for reading uses the separator to determine the amount of columns (use a simple split(separator)
void	setupInput(String inputfile, int cols) setup (open) the inputfile for reading
void	setupInput(String database, String username, String password) same as setupOutput( String ), but with hostname="localhost" and port=3306
void	setupInput(String database, String username, String password, String hostname, int port) setup the database to write in open a connection to db
void	setupOutput(String outputfile) setup the outputfile to write in you must call the closeOutput() to flush and close the outputfile
void	setupOutput(String database, String username, String password) same as above, but with hostname="localhost" and port=3306
void	setupOutput(String database, String username, String password, String hostname, int port) same as for setupInput, but for writing
boolean	writeLine(String line) write a line to an open file see de.uni_leipzig.asv.utils.IOInterface#setupOutput(java.lang.String)

Methods inherited from class java.lang.Object

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

Constructor Detail

IOWrapper

public IOWrapper()

Method Detail

getLineIterator

public IOIterator getLineIterator()
                           throws IOWrapperException

Description copied from interface: IOInterface

returns the IOIterator to iterate over file data

Specified by:

getLineIterator in interface IOInterface

Returns:

IO-Iterator to iterate over rows of your resultset

Throws:

IOWrapperException

writeLine

public boolean writeLine(String line)
                  throws IOWrapperException

Description copied from interface: IOInterface

write a line to an open file see de.uni_leipzig.asv.utils.IOInterface#setupOutput(java.lang.String)

Specified by:

writeLine in interface IOInterface

Returns:

true if everything is ok

Throws:

IOWrapperException

closeOutput

public void closeOutput()
                 throws IOWrapperException

Description copied from interface: IOInterface

simply close the outputfile you must call this method before the program terminates

Specified by:

closeOutput in interface IOInterface

Throws:

IOWrapperException

setupInput

public void setupInput(String inputfile,
              int cols)
                throws IOWrapperException

Description copied from interface: IOInterface

setup (open) the inputfile for reading

Specified by:

setupInput in interface IOInterface

Parameters:

inputfile - the name of the input file

cols - in file, separated by tabs - use 0 for auto-detection (dynamic col-count)

Throws:

IOWrapperException

setupInput

public void setupInput(String inputfile)
                throws IOWrapperException

Description copied from interface: IOInterface

setup the inputfile for reading uses the separator to determine the amount of columns (use a simple split(separator)

Specified by:

setupInput in interface IOInterface

Parameters:

inputfile - to open the file for read

Throws:

IOWrapperException

setupOutput

public void setupOutput(String outputfile)
                 throws IOWrapperException

Description copied from interface: IOInterface

setup the outputfile to write in you must call the closeOutput() to flush and close the outputfile

Specified by:

setupOutput in interface IOInterface

Parameters:

outputfile - to open the file to write into

Throws:

IOWrapperException

setupInput

public void setupInput(String database,
              String username,
              String password,
              String hostname,
              int port)
                throws IOWrapperException

Description copied from interface: IOInterface

setup the database to write in open a connection to db

Specified by:

setupInput in interface IOInterface

Parameters:

database - name, "de" for example

username - to log in

password - to log in

hostname - the database runs on

port - = database port

Throws:

IOWrapperException

setupInput

public void setupInput(String database,
              String username,
              String password)
                throws IOWrapperException

Description copied from interface: IOInterface

same as setupOutput( String ), but with hostname="localhost" and port=3306

Specified by:

setupInput in interface IOInterface

Throws:

IOWrapperException

setupOutput

public void setupOutput(String database,
               String username,
               String password,
               String hostname,
               int port)
                 throws IOWrapperException

Description copied from interface: IOInterface

same as for setupInput, but for writing

Specified by:

setupOutput in interface IOInterface

Throws:

IOWrapperException

setupOutput

public void setupOutput(String database,
               String username,
               String password)
                 throws IOWrapperException

Description copied from interface: IOInterface

same as above, but with hostname="localhost" and port=3306

Specified by:

setupOutput in interface IOInterface

Throws:

IOWrapperException

select

public IOIterator select(String tablename,
                String[] cols)
                  throws IOWrapperException

Description copied from interface: IOInterface

select the "cols" from table "tablename" and returns an iterator

Specified by:

select in interface IOInterface

Returns:

Throws:

IOWrapperException

select

public IOIterator select(String tablename)
                  throws IOWrapperException

Description copied from interface: IOInterface

select all cols from table "tablename" and returns an iterator

Specified by:

select in interface IOInterface

Returns:

Throws:

IOWrapperException

sendInputQuery

public IOIterator sendInputQuery(String query)
                          throws IOWrapperException

Description copied from interface: IOInterface

iterates over the resultset of a given query please read the IOIteratorInterface code

Specified by:

sendInputQuery in interface IOInterface

Returns:

Throws:

IOWrapperException

execQuery

public ResultSet execQuery(String query)

sendOutputQuery

public boolean sendOutputQuery(String query)
                        throws IOWrapperException

Description copied from interface: IOInterface

send a query to database

Specified by:

sendOutputQuery in interface IOInterface

Returns:

Throws:

IOWrapperException

main

public static void main(String[] args)
                 throws IOWrapperException,
                        IOIteratorException,
                        InterruptedException

Throws:

IOWrapperException

IOIteratorException

InterruptedException