edu.ucar.unidata.wmotables.service

Class TableManagerImpl

java.lang.Object

edu.ucar.unidata.wmotables.service.TableManagerImpl

All Implemented Interfaces:

TableManager

public class TableManagerImpl
extends Object
implements TableManager

Service for processing Table objects.

Field Summary

Fields

Modifier and Type	Field and Description
protected static org.apache.log4j.Logger	logger

Constructor Summary

Constructors

Constructor and Description
TableManagerImpl()

Method Summary

Methods

Modifier and Type	Method and Description
void	createTable(Table table) Creates a new table.
void	downloadTableFile(String action, Table table, javax.servlet.http.HttpServletResponse response) Access the table file on disk and streams it to the response object.
int	getTableCount() Queries the persistence mechanism and returns the number of tables.
int	getTableCount(int userId) Queries the persistence mechanism and returns the number of tables owned by a user.
List<Table>	getTableList() Requests a List of ALL tables from the persistence mechanism.
List<Table>	getTableList(int userId) Requests a List of tables owned by a particular user from the persistence mechanism.
Table	lookupTable(int tableId) Looks up and retrieves a table from the persistence mechanism using the table id.
Table	lookupTable(String checkSum) Looks up and retrieves a table from the persistence mechanism using the checkSum value.
void	setTableDao(TableDao tableDao) Sets the data access object which will acquire and persist the data passed to it via the methods of this TableManager.
void	toggleTableVisibility(Table table) Toggles the table's visiblity attribute to in the persistence mechanism.
void	updateTable(Table table) Saves changes made to an existing table (meaning changes made to table attributes in the persistence mechanism and NOT the creation/deletion of tables contained within the table).

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected static org.apache.log4j.Logger logger

Constructor Detail

TableManagerImpl

public TableManagerImpl()

Method Detail

setTableDao

public void setTableDao(TableDao tableDao)

Sets the data access object which will acquire and persist the data passed to it via the methods of this TableManager.

Parameters:

tableDao - The service mechanism data access object representing a Table.

lookupTable

public Table lookupTable(int tableId)

Looks up and retrieves a table from the persistence mechanism using the table id.

Specified by:

lookupTable in interface TableManager

Parameters:

tableId - The id of the table we are trying to locate (will be unique for each table).

Returns:

The table represented as a Table object.

lookupTable

public Table lookupTable(String checkSum)

Looks up and retrieves a table from the persistence mechanism using the checkSum value.

Specified by:

lookupTable in interface TableManager

Parameters:

checkSum - The checkSum check sum of the table we are trying to locate (will be unique for each table).

Returns:

The table represented as a Table object.

getTableList

public List<Table> getTableList()

Requests a List of ALL tables from the persistence mechanism.

Specified by:

getTableList in interface TableManager

Returns:

A List of tables.

getTableList

public List<Table> getTableList(int userId)

Requests a List of tables owned by a particular user from the persistence mechanism.

Specified by:

getTableList in interface TableManager

Parameters:

userId - The id of the user what owns the tables.

Returns:

A List of tables.

getTableCount

public int getTableCount()

Queries the persistence mechanism and returns the number of tables.

Specified by:

getTableCount in interface TableManager

Returns:

The total number of tables as an int.

getTableCount

public int getTableCount(int userId)

Queries the persistence mechanism and returns the number of tables owned by a user.

Specified by:

getTableCount in interface TableManager

Parameters:

userId - The id of the user that owns the tables.

Returns:

The total number of tables as an int.

toggleTableVisibility

public void toggleTableVisibility(Table table)

Toggles the table's visiblity attribute to in the persistence mechanism.

Specified by:

toggleTableVisibility in interface TableManager

Parameters:

table - The table in the persistence mechanism.

createTable

public void createTable(Table table)
                 throws IOException

Creates a new table. A WMO table is uploaded as a CommonsMultipartFile, an Checksum (MD5) is generated from its contents, and the Table is stored on disk using the checksum as a name).

Specified by:

createTable in interface TableManager

Parameters:

table - The table to be created.

Throws:

IOException - If an IO error occurs when writing the table to the file system.

updateTable

public void updateTable(Table table)

Saves changes made to an existing table (meaning changes made to table attributes in the persistence mechanism and NOT the creation/deletion of tables contained within the table).

Specified by:

updateTable in interface TableManager

Parameters:

table - The existing table with changes that needs to be saved.

downloadTableFile

public void downloadTableFile(String action,
                     Table table,
                     javax.servlet.http.HttpServletResponse response)
                       throws RuntimeException

Access the table file on disk and streams it to the response object.

Specified by:

downloadTableFile in interface TableManager

Parameters:

action - Whether we want to view the file or download the file (influences the mimetype).

table - The Table object representing the file to download.

response - The current HttpServletRequest response.

Throws:

RuntimeException - If unable to stream the file to the response object.