com.pow2.dao.datalist
Class ResultSetDataListImpl

java.lang.Object
  com.pow2.dao.AbstractDAO
      com.pow2.dao.datalist.ResultSetDataListImpl

All Implemented Interfaces:

DataList, ResultSetDataList

public class ResultSetDataListImpl

extends AbstractDAO

implements ResultSetDataList

ResultSetDataListImpl class

Author:

Claudio Fratarcangeli

Field Summary

Fields inherited from class com.pow2.dao.AbstractDAO

cat

Constructor Summary

ResultSetDataListImpl(ResultSetRowMapper rowMapper, Connection conn, Statement stmt, ResultSet rs)
Constructor

Method Summary

boolean	absolute(int index) Move the ResultSetDataList cursor to a specific row number.
void	beforeFirst() Move the resultSetDataList cursor before the first row of the list.
void	close() Close the data list resultSet, statement, and connection resources.
boolean	elementExists(int index) Check if any element exist at the index poition.
Object	get(int index, Object item) Put object state in item and return it.
boolean	hasNext() Check if the resultSet data list has got another record.
boolean	isEmpty() Check if the ResultSetDataList is empty.
DataListIterator	iterator() Get the iterator object for this data list.

Methods inherited from class com.pow2.dao.AbstractDAO

assertion, closeResources, closeResources, closeResources, count, count, delete, delete, encode, getConnection, getConnection, getNewKey, isDebugEnabled, populate, setLike, setLike

Methods inherited from class java.lang.Object

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

Constructor Detail

ResultSetDataListImpl

public ResultSetDataListImpl(ResultSetRowMapper rowMapper,
                             Connection conn,
                             Statement stmt,
                             ResultSet rs)

Constructor

Parameters:

rowMapper - the rowMapper instance

conn - the connection object

stmt - the statement object

rs - the resultSet object

Method Detail

iterator

public DataListIterator iterator()
                          throws Exception

Get the iterator object for this data list.

Specified by:

iterator in interface DataList

Returns:

the iterator object for this data list

Throws:

Exception - if any error occurs

get

public Object get(int index,
                  Object item)
           throws Exception

Put object state in item and return it.
Use rowMapper to map fields of ResultSet to instance variables of item. ResultSet index ranges from 1, while ResultSetDataList index ranges from 0.

Specified by:

get in interface DataList

Parameters:

index - the index value, starting from 0

item - the item object to fill

Returns:

the item object filled with values retrieved from the resultSet

Throws:

Exception - if any error occurs

hasNext

public boolean hasNext()
                throws Exception

Check if the resultSet data list has got another record.

Specified by:

hasNext in interface ResultSetDataList

Returns:

true if the resultSet data list has got another record, false otherwise

Throws:

Exception - if any error occurs

beforeFirst

public void beforeFirst()
                 throws Exception

Move the resultSetDataList cursor before the first row of the list.

Specified by:

beforeFirst in interface ResultSetDataList

Throws:

Exception - if any error occurs

absolute

public boolean absolute(int index)
                 throws Exception

Move the ResultSetDataList cursor to a specific row number. Rows are numbered starting from 0.

Specified by:

absolute in interface ResultSetDataList

Parameters:

index - the cursor index value, starting from 0

Returns:

true if the cursor is on the result set; false otherwise

Throws:

Exception - if any error occurs

isEmpty

public boolean isEmpty()
                throws Exception

Check if the ResultSetDataList is empty.

Specified by:

isEmpty in interface DataList

Returns:

The empty value

Throws:

Exception - if any error occurs

elementExists

public boolean elementExists(int index)
                      throws Exception

Check if any element exist at the index poition.
Preserve current location of cursor, find out if element exists and then put cursor back where it was to begin with.

Specified by:

elementExists in interface ResultSetDataList

Parameters:

index - the index value, starting from 0

Returns:

true if any element exist at the index poition, false otherwise

Throws:

Exception - if any error occurs

close

public void close()
           throws Exception

Close the data list resultSet, statement, and connection resources.

Specified by:

close in interface DataList

Throws:

Exception - if any error occurs