tigase.db.jdbc

Class DataRepositoryImpl

java.lang.Object

tigase.db.jdbc.DataRepositoryImpl

All Implemented Interfaces:

DataRepository, Repository, StatisticsProviderIfc

public class DataRepositoryImpl
extends Object
implements DataRepository, StatisticsProviderIfc

Created: Sep 3, 2010 5:55:41 PM

Version:

$Rev$

Author:

Artur Hefczyc

Nested Class Summary

Nested classes/interfaces inherited from interface tigase.db.DataRepository

DataRepository.dbTypes

Nested classes/interfaces inherited from interface tigase.db.Repository

Repository.Meta

Field Summary

Fields

Modifier and Type	Field and Description
static int	DB_CONN_TIMEOUT Field description
static String	DB_CONN_TIMEOUT_PROP_KEY
static String	DERBY_CHECK_TABLE_QUERY Field description
static String	DERBY_CONNVALID_QUERY Field description
static String	JDBC_CONNVALID_QUERY Field description
static String	MYSQL_CHECK_TABLE_QUERY Field description
static String	OTHER_CHECK_TABLE_QUERY Field description
static String	PGSQL_CHECK_TABLE_QUERY Field description
static int	QUERY_TIMEOUT Field description
static String	QUERY_TIMEOUT_PROP_KEY
static String	SP_STARTS_WITH Field description
static String	SQLSERVER_CHECK_TABLE_QUERY Field description

Constructor Summary

Constructors

Constructor and Description
DataRepositoryImpl()

Method Summary

Modifier and Type	Method and Description
boolean	checkTable(String tableName) The method checks whether a table for the given name exists in the database.
boolean	checkTable(String tableName, String createTableQuery) The method checks whether a table for the given name exists in the database and if it does not, it automatically creates it.
void	commit() Commits current transaction on the DataRepository connection.
Statement	createStatement(BareJID user_id) Creates a SQL statement on which SQL queries can be executed later by the higher repository layer.
void	endTransaction() Ends current transaction on the DataRepository connection.
DataRepository.dbTypes	getDatabaseType() Returns type of DataRepository database
protected int	getParam(String key, Map<String,String> params, int def)
PreparedStatement	getPreparedStatement(BareJID user_id, String stIdKey) Returns a prepared statement for a given key.
String	getResourceUri() Returns a DB connection string or DB connection URI.
void	getStatistics(String compName, StatisticsList list)
void	initPreparedStatement(String key, String query) Initializes a prepared statement for a given query and stores it internally under the given id key.
void	initPreparedStatement(String key, String query, int autoGeneratedKeys) Initializes a prepared statement for a given query and stores it internally under the given id key.
void	initRepository(String resource_uri, Map<String,String> params) The method is called to initialize the data repository.
void	release(Statement stmt, ResultSet rs) A helper method to release resources from the statement and result set.
void	releaseRepoHandle(DataRepository repo) Method description
void	rollback() Rolls back started transaction on the DataRepository connection.
void	startTransaction() Starts transaction on the DataRepository connection.
DataRepository	takeRepoHandle(BareJID user_id) Returns DataRepository instance.

Methods inherited from class java.lang.Object

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

Field Detail

DERBY_CONNVALID_QUERY

public static final String DERBY_CONNVALID_QUERY

Field description

See Also:

Constant Field Values

JDBC_CONNVALID_QUERY

public static final String JDBC_CONNVALID_QUERY

Field description

See Also:

Constant Field Values

MYSQL_CHECK_TABLE_QUERY

public static final String MYSQL_CHECK_TABLE_QUERY

Field description

See Also:

Constant Field Values

PGSQL_CHECK_TABLE_QUERY

public static final String PGSQL_CHECK_TABLE_QUERY

Field description

See Also:

Constant Field Values

DERBY_CHECK_TABLE_QUERY

public static final String DERBY_CHECK_TABLE_QUERY

Field description

See Also:

Constant Field Values

SQLSERVER_CHECK_TABLE_QUERY

public static final String SQLSERVER_CHECK_TABLE_QUERY

Field description

See Also:

Constant Field Values

OTHER_CHECK_TABLE_QUERY

public static final String OTHER_CHECK_TABLE_QUERY

Field description

See Also:

Constant Field Values

SP_STARTS_WITH

public static final String SP_STARTS_WITH

Field description

See Also:

Constant Field Values

QUERY_TIMEOUT_PROP_KEY

public static final String QUERY_TIMEOUT_PROP_KEY

See Also:

Constant Field Values

QUERY_TIMEOUT

public static final int QUERY_TIMEOUT

Field description

See Also:

Constant Field Values

DB_CONN_TIMEOUT_PROP_KEY

public static final String DB_CONN_TIMEOUT_PROP_KEY

See Also:

Constant Field Values

DB_CONN_TIMEOUT

public static final int DB_CONN_TIMEOUT

Field description

See Also:

Constant Field Values

Constructor Detail

DataRepositoryImpl

public DataRepositoryImpl()

Method Detail

checkTable

public boolean checkTable(String tableName)
                   throws SQLException

Description copied from interface: DataRepository

The method checks whether a table for the given name exists in the database.

Specified by:

checkTable in interface DataRepository

Parameters:

tableName - is a String value of the table name to check

Returns:

true boolean value if the table exist in the database and false if the table was not found.

Throws:

SQLException - if there was a problem accessing database.

checkTable

public boolean checkTable(String tableName,
                          String createTableQuery)
                   throws SQLException

Description copied from interface: DataRepository

The method checks whether a table for the given name exists in the database and if it does not, it automatically creates it.

Specified by:

checkTable in interface DataRepository

Parameters:

tableName - is a String value of the table name to check

createTableQuery - is a String with the query to create table

Returns:

true boolean value if the table exist in the database and false if the table was not found.

Throws:

SQLException - if there was a problem accessing database.

createStatement

public Statement createStatement(BareJID user_id)
                          throws SQLException

Description copied from interface: DataRepository

Creates a SQL statement on which SQL queries can be executed later by the higher repository layer.

Specified by:

createStatement in interface DataRepository

Parameters:

user_id - user id for which the statement has to be created. This is an optional parameter and null can be provided. It is used mainly to group queries for the same user on the same DB connection.

Returns:

a newly created Statement

Throws:

SQLException - if a JDBC error occurs.

getPreparedStatement

public PreparedStatement getPreparedStatement(BareJID user_id,
                                              String stIdKey)
                                       throws SQLException

Description copied from interface: DataRepository

Returns a prepared statement for a given key.

Specified by:

getPreparedStatement in interface DataRepository

Parameters:

user_id - user id for which the statement has to be created. This is an optional parameter and null can be provided. It is used mainly to group queries for the same user on the same DB connection.

stIdKey - is a statement identification key.

Returns:

a PreparedStatement for the given id key or null if such a statement does not exist.

Throws:

SQLException

getResourceUri

public String getResourceUri()

Description copied from interface: DataRepository

Returns a DB connection string or DB connection URI.

Specified by:

getResourceUri in interface DataRepository

Returns:

a String value representing database connection string.

getDatabaseType

public DataRepository.dbTypes getDatabaseType()

Description copied from interface: DataRepository

Returns type of DataRepository database

Specified by:

getDatabaseType in interface DataRepository

Returns:

a value of dbTypes

initPreparedStatement

public void initPreparedStatement(String key,
                                  String query)
                           throws SQLException

Description copied from interface: DataRepository

Initializes a prepared statement for a given query and stores it internally under the given id key. It can be retrieved later using getPreparedStatement(stIdKey) method.

Specified by:

initPreparedStatement in interface DataRepository

Parameters:

key - is a statement identification key.

query - is a query for the prepared statement.

Throws:

SQLException

initPreparedStatement

public void initPreparedStatement(String key,
                                  String query,
                                  int autoGeneratedKeys)
                           throws SQLException

Description copied from interface: DataRepository

Initializes a prepared statement for a given query and stores it internally under the given id key. It can be retrieved later using getPreparedStatement(stIdKey) method.

Specified by:

initPreparedStatement in interface DataRepository

Parameters:

key - is a statement identification key.

query - is a query for the prepared statement.

autoGeneratedKeys - defines if statement should return auto generated keys

Throws:

SQLException

initRepository

public void initRepository(String resource_uri,
                           Map<String,String> params)
                    throws DBInitException

Description copied from interface: Repository

The method is called to initialize the data repository. Depending on the implementation all the initialization parameters can be passed either via resource_uri parameter as the database connection string or via params map if the required repository parameters are more complex or both.

Specified by:

initRepository in interface Repository

Parameters:

resource_uri - value in most cases representing the database connection string.

params - is a Map with repository properties necessary to initialize and perform all the functions. The initialization parameters are implementation dependent.

Throws:

DBInitException - if there was an error during repository initialization. Some implementations, though, perform so called lazy initialization so even though there is a problem with the underlying repository it may not be signaled through this method call.

getParam

protected int getParam(String key,
                       Map<String,String> params,
                       int def)

release

public void release(Statement stmt,
                    ResultSet rs)

Description copied from interface: DataRepository

A helper method to release resources from the statement and result set. This is most common operation for all database calls, therefore it does make sense to add such a utility method to the API.

Specified by:

release in interface DataRepository

Parameters:

stmt - a Statement variable to release resources for. Might be null.

rs - a ResultSet variable to release resources for. Might be null.

takeRepoHandle

public DataRepository takeRepoHandle(BareJID user_id)

Description copied from interface: DataRepository

Returns DataRepository instance. If this is a repository pool then it returns particular instance from the pool. It this is a real repository instance it returns itself. This is exclusive take, no other thread may use this handle until it is returned to the pool.

Specified by:

takeRepoHandle in interface DataRepository

Parameters:

user_id - is user account ID for which we acquire the handle.

Returns:

DataRepository instance.

startTransaction

public void startTransaction()
                      throws SQLException

Description copied from interface: DataRepository

Starts transaction on the DataRepository connection. Please note that calling this method on the repository pool has no effect. You have to obtain particular repository handle first, before you can start transaction.

Specified by:

startTransaction in interface DataRepository

Throws:

SQLException

commit

public void commit()
            throws SQLException

Description copied from interface: DataRepository

Commits current transaction on the DataRepository connection. Please note that calling this method on the repository pool has no effect. You have to obtain particular repository handle first, before you can start transaction.

Specified by:

commit in interface DataRepository

Throws:

SQLException

rollback

public void rollback()
              throws SQLException

Description copied from interface: DataRepository

Rolls back started transaction on the DataRepository connection. Please note that calling this method on the repository pool has no effect. You have to obtain particular repository handle first, before you can start transaction.

Specified by:

rollback in interface DataRepository

Throws:

SQLException

endTransaction

public void endTransaction()
                    throws SQLException

Description copied from interface: DataRepository

Ends current transaction on the DataRepository connection. Please note that calling this method on the repository pool has no effect. You have to obtain particular repository handle first, before you can start transaction.

Specified by:

endTransaction in interface DataRepository

Throws:

SQLException

releaseRepoHandle

public void releaseRepoHandle(DataRepository repo)

Description copied from interface: DataRepository

Method description

Specified by:

releaseRepoHandle in interface DataRepository

Parameters:

repo - is a DataRepository

getStatistics

public void getStatistics(String compName,
                          StatisticsList list)

Specified by:

getStatistics in interface StatisticsProviderIfc