game.gamestorage.texas.db
Class SQLHandler

java.lang.Object
  game.gamestorage.texas.db.SQLHandler

public class SQLHandler
extends java.lang.Object

This class handles the communication to the database
offers different kinds of returnable datatypes

Author:

Witthold/Korol

Field Summary

private ConnectionManager

cm

Constructor Summary

SQLHandler()
Constructor default
initializes ConnectionManager

SQLHandler(java.lang.String driver, java.lang.String databaseUrl, java.lang.String username, java.lang.String password, int maxPoolSize)
Constructor with specific database params
probably only need for test cases

Method Summary

boolean	connectionSuccess()
private java.sql.Statement	getStatement(java.sql.Connection con) getStatement:
java.util.HashMap<java.lang.Integer,java.lang.String>	sqlGetHashMapIntString(java.lang.String sql) sqlGetHashMapStringInt: SELECT
java.util.HashMap<java.lang.String,java.lang.Integer>	sqlGetHashMapStringInt(java.lang.String sql) sqlGetHashMapStringInt: SELECT
int	sqlGetInt(java.lang.String sql) sqlGetInt: SELECT
java.util.ArrayList<int[]>	sqlGetIntArrayListMultiPerRow(java.lang.String sql, int numCols) sqlGetIntArrayListMultiPerRow: SELECT
int[][]	sqlGetIntArrayMultiPerRow(java.lang.String sql, int numCols) sqlGetIntArrayMultiPerRow: SELECT
int[]	sqlGetIntArrayOnePerRow(java.lang.String sql) sqlGetIntArrayOnePerRow: SELECT
java.util.ArrayList<long[]>	sqlGetLongArrayListMultiPerRow(java.lang.String sql, int numCols) sqlGetLongArrayListMultiPerRow: SELECT
long[]	sqlGetLongArrayOnePerRow(java.lang.String sql) sqlGetIntArrayOnePerRow: SELECT
java.sql.ResultSet	sqlGetResultSet(java.lang.String sql) sqlGetResultSet: SELECT
protected boolean	sqlSet(java.lang.String sql) sqlSet: INSERT, UPDATE, DELETE
protected int	sqlSetReturnID(java.lang.String sql) sqlSetReturnID: INSERT, UPDATE, DELETE
protected int[]	sqlSetReturnIDs(java.lang.String sql) sqlSetReturnIDs: INSERT, UPDATE, DELETE

Methods inherited from class java.lang.Object

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

Field Detail

cm

private ConnectionManager cm

Constructor Detail

SQLHandler

public SQLHandler()

Constructor default
initializes ConnectionManager

SQLHandler

public SQLHandler(java.lang.String driver,
                  java.lang.String databaseUrl,
                  java.lang.String username,
                  java.lang.String password,
                  int maxPoolSize)

Constructor with specific database params
probably only need for test cases

Parameters:

driver - which dbc driver

databaseUrl - -

username - -

password - -

maxPoolSize - - how many db-connection should the ConnectionManager allocate

Method Detail

sqlSet

protected boolean sqlSet(java.lang.String sql)

sqlSet:
INSERT, UPDATE, DELETE

Parameters:

sql - query

Returns:

true, if writing to db succeeded

sqlSetReturnIDs

protected int[] sqlSetReturnIDs(java.lang.String sql)

sqlSetReturnIDs:
INSERT, UPDATE, DELETE

Parameters:

sql - query

Returns:

int[] of autogenerated IDs

sqlSetReturnID

protected int sqlSetReturnID(java.lang.String sql)

sqlSetReturnID:
INSERT, UPDATE, DELETE

Parameters:

sql - query

Returns:

int of autogenerated ID

sqlGetResultSet

public java.sql.ResultSet sqlGetResultSet(java.lang.String sql)

sqlGetResultSet:
SELECT

Parameters:

sql - query

Returns:

ResultSet

sqlGetHashMapStringInt

public java.util.HashMap<java.lang.String,java.lang.Integer> sqlGetHashMapStringInt(java.lang.String sql)

sqlGetHashMapStringInt:
SELECT

Parameters:

sql - query

Returns:

HashMap

sqlGetHashMapIntString

public java.util.HashMap<java.lang.Integer,java.lang.String> sqlGetHashMapIntString(java.lang.String sql)

sqlGetHashMapStringInt:
SELECT

Parameters:

sql - query

Returns:

HashMap

sqlGetInt

public int sqlGetInt(java.lang.String sql)

sqlGetInt:
SELECT

Parameters:

sql - query

Returns:

int result

sqlGetIntArrayOnePerRow

public int[] sqlGetIntArrayOnePerRow(java.lang.String sql)

sqlGetIntArrayOnePerRow:
SELECT

Parameters:

sql - query

Returns:

int[]: length = numRows

sqlGetLongArrayOnePerRow

public long[] sqlGetLongArrayOnePerRow(java.lang.String sql)

sqlGetIntArrayOnePerRow:
SELECT

Parameters:

sql - query

Returns:

int[]: length = numRows

sqlGetIntArrayMultiPerRow

public int[][] sqlGetIntArrayMultiPerRow(java.lang.String sql,
                                         int numCols)

sqlGetIntArrayMultiPerRow:
SELECT

Parameters:

sql - query

numCols - length

Returns:

int[][]: lengths = numRows, numCols

sqlGetIntArrayListMultiPerRow

public java.util.ArrayList<int[]> sqlGetIntArrayListMultiPerRow(java.lang.String sql,
                                                                int numCols)

sqlGetIntArrayListMultiPerRow:
SELECT

Parameters:

sql - query

numCols - length

Returns:

ArrayList size = numRows with int[numCols]

sqlGetLongArrayListMultiPerRow

public java.util.ArrayList<long[]> sqlGetLongArrayListMultiPerRow(java.lang.String sql,
                                                                  int numCols)

sqlGetLongArrayListMultiPerRow:
SELECT

Parameters:

sql - query

numCols - length

Returns:

ArrayList size = numRows with int[numCols]

getStatement

private java.sql.Statement getStatement(java.sql.Connection con)

getStatement:

Parameters:

con -

Returns:

Statement for Connection

connectionSuccess

public boolean connectionSuccess()

Returns:

true, if there is at least one connection to the db