Package com.openmeet.shared.data.storage

Class GenericDAO

java.lang.Object

com.openmeet.shared.data.storage.GenericDAO

public final class GenericDAO
extends Object

Method Summary

Modifier and Type	Method	Description
static boolean	genericDoDelete(String table, String condition, DataSource source)	Deletes an object in the database.
static <E extends ResultSetExtractor<T>, T> List<T>	genericDoRetrieveByCondition(String table, String condition, E extractor, DataSource source)	Returns a list of objects from the database that match a given condition.
static boolean	genericDoSave(String table, HashMap<String,?> map, DataSource source)	Saves an object in the database.
static boolean	genericDoUpdate(String table, String condition, HashMap<String,?> values, DataSource source)	Updates an object in the database.

Methods inherited from class java.lang.Object

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

Method Details

genericDoRetrieveByCondition

public static <E extends ResultSetExtractor<T>,
T>
List<T> genericDoRetrieveByCondition(String table,
 String condition,
 E extractor,
 DataSource source)
                              throws SQLException

Returns a list of objects from the database that match a given condition.

Parameters:

table - the name of the table in the database from which the records are to be retrieved.

condition - the condition that the records should match in order to be retrieved.

extractor - an instance of a class that implements the ResultSetExtractor interface. The extractor is used to convert the ResultSet returned by the database query into a List of objects of the desired type.

source - an instance of DataSource, an object used to establish a connection to the database.

Returns:

the query results as a list of objects.

Throws:

SQLException

genericDoSave

public static boolean genericDoSave(String table,
 HashMap<String,?> map,
 DataSource source)
                             throws SQLException

Saves an object in the database.

Parameters:

table - the name of the table in the database from which the records are to be retrieved.

map - a HashMap representing the data to be saved, where the keys are the column names and the values are the values to be inserted.

source - an instance of DataSource, an object used to establish a connection to the database.

Returns:

a boolean value that indicates if the operation was successful or not.

Throws:

SQLException

genericDoUpdate

public static boolean genericDoUpdate(String table,
 String condition,
 HashMap<String,?> values,
 DataSource source)
                               throws SQLException

Updates an object in the database.

Parameters:

table - the name of the table in the database from which the records are to be retrieved.

condition - the condition that the records should match in order to be retrieved.

values - a HashMap representing the data to be updated, where the keys are the column names and the values are the new values to be set.

source - an instance of DataSource, an object used to establish a connection to the database.

Returns:

a boolean value that indicates if the operation was successful or not.

Throws:

SQLException

genericDoDelete

public static boolean genericDoDelete(String table,
 String condition,
 DataSource source)
                               throws SQLException

Deletes an object in the database.

Parameters:

table - the name of the table in the database from which the records are to be retrieved.

condition - the condition that the records should match in order to be retrieved.

source - an instance of DataSource, an object used to establish a connection to the database.

Returns:

a boolean value that indicates if the operation was successful or not.

Throws:

SQLException