Keywordfilter field in blackberry - blackberry

Question

I used a keywordfilter for a list which is populated from db .Its working good .Imagine the list contains a phrase 'A big bat' and there are other words starting with 'b' like books etc .But when I give 'b' in the search field the phrase 'A big bat' appears first and then only words starting with 'b'.Please help me to fix it
please see my code
public final class KeywordFilter
{
private KeywordFilterField _keywordFilterField;
private WordList _wordList;
private Vector _words;
public KeywordFilter()
{
_words = getDataFromDatabase();
if(_words != null)
{
_wordList = new WordList(_words);
_keywordFilterField = new KeywordFilterField();
_keywordFilterField.setSourceList(_wordList, _wordList);
CustomKeywordField customSearchField = new CustomKeywordField();
_keywordFilterField.setKeywordField(customSearchField);
KeywordFilterScreen screen = new KeywordFilterScreen(this);
screen.setTitle(_keywordFilterField.getKeywordField());
screen.add(_keywordFilterField);
UiApplication ui = UiApplication.getUiApplication();
ui.pushScreen(screen);
}
else
{
UiApplication.getUiApplication().invokeLater(new Runnable()
{
public void run()
{
Dialog.alert("Error reading data file.");
System.exit(0);
}
});
}
}
KeywordFilterField getKeywordFilterField()
{
return _keywordFilterField;
}
private Vector getDataFromDatabase()
{
Vector words = new Vector();
Database d;
for(;;)
{
try
{
URI myURI=URI.create("file:///SDCard/Databases/MyTestDatabase.db");
d=DatabaseFactory.open(myURI);
Statement st=d.createStatement("select (select distinct group_concat(eng) fromEnglish),group_concat(mal) from English e ,Malayalam m where e.Ecode=m.Mcode group by eng");
st.prepare();
net.rim.device.api.database.Cursor c=st.getCursor();
Row r;
while(c.next())
{
r=c.getRow();
String w=r.getString(0);
String meaning=r.getString(1);
words.addElement(new Word(w,meaning));
}
st.close();
d.close();
}
catch ( Exception e )
{
System.out.println( e.getMessage() );
e.printStackTrace();
}
return words;
}
}
void addElementToList(Word w)
{
_wordList.addElement(w);
_keywordFilterField.updateList();
}
final static class CustomKeywordField extends BasicEditField
{
CustomKeywordField()
{
super(USE_ALL_WIDTH|NON_FOCUSABLE|NO_LEARNING|NO_NEWLINE);
setLabel("Search: ");
}
protected boolean keyChar(char ch, int status, int time)
{
switch(ch)
{
case Characters.ESCAPE:
if(super.getTextLength() > 0)
{
setText("");
return true;
}
}
return super.keyChar(ch, status, time);
}
protected void paint(Graphics graphics)
{
super.paint(graphics);
getFocusRect(new XYRect());
drawFocus(graphics, true);
}
}
}
class KeywordFilterScreen extends MainScreen
{
private KeywordFilter _app;
private KeywordFilterField _keywordFilterField;
public KeywordFilterScreen(KeywordFilter app)
{
_app = app;
_keywordFilterField = _app.getKeywordFilterField();
}
protected boolean keyChar(char key, int status, int time)
{
if (key == Characters.ENTER)
{
displayInfoScreen();
// Word w = (Word)_keywordFilterField.getSelectedElement();
// Status.show(w.getMeaning());
return true;
}
return super.keyChar(key, status, time);
}
public boolean invokeAction(int action)
{
switch(action)
{
case ACTION_INVOKE:
displayInfoScreen();
return true;
}
return super.invokeAction(action);
}
private void displayInfoScreen()
{
Word w = (Word)_keywordFilterField.getSelectedElement();
if(w != null)
{
InfoScreen infoScreen = new InfoScreen(w);
UiApplication ui=UiApplication.getUiApplication();
ui.pushScreen(infoScreen);
}
}
public boolean onSavePrompt()
{
return true;
}
private final static class InfoScreen extends MainScreen
{
InfoScreen(Word w)
{
setTitle(w.toString());
BasicEditField popField = new BasicEditField(" ",w.getMeaning(),300,Field.NON_FOCUSABLE);
FontManager.getInstance().load("DC124.TTF", "MyFont", FontManager.APPLICATION_FONT) ;
{
try {
FontFamily typeface = FontFamily.forName("MyFont");
Font myFont = typeface.getFont(Font.PLAIN, 25);
popField.setFont(myFont);
add(popField);
} catch (ClassNotFoundException ex) {
ex.printStackTrace();}
}
}
}
}

Answer 1

This query is useful for you:
SELECT Name FROM Employee where Name like '%d%' order by Name;
Here Name is my column-name;
Try this;

Answer 2

I think you are using query like following
select colomname from tablename where colomname GLOB '%b%';
here you get all names which are contain letter 'b' (case sensitive)
if you want all words which are strted with letter 'b' use should writr query like
select colomname from tablename where colomname GLOB 'b%' order by colomname ;
here i am using "GLOB" it gives case sensitive to the out put records if you dont need case sensitive then you can use "LIKE" key word
thanks