RMS record search and to place in an array

[udaykapavarapu]

hi all,
I have a problem in getting the retreived values from the record store and place it in an array.

The code is as follows:

public void append(String charText)
{
if(item>1)
this.items.append(charText+"*");
else
this.items.append(charText);
}

public void openRecStore()
{
try
{
// The second parameter indicates that the record store
// should be created if it does not exist
rs = RecordStore.openRecordStore("All Items", true );
}
catch (Exception e)
{
System.out.println("Exception in opening: "+e.getMessage());
}
}

public void closeRecStore()
{
try
{
rs.closeRecordStore();
}
catch (Exception e)
{
System.out.println("Exception in closing record: "+e.getMessage());
}
}

/*--------------------------------------------------
* Create array of data to write into record store
*-------------------------------------------------*/
public void writeTestData()
{
String[] items = {
"bag101-Laptop Bag-Rs.600",
"bag102-Travel Bag-Rs.500",
"bag103-School Bag-Rs.350",
"wal201-Leather Wallet-Rs.400",
"wal202-Trifold Wallet-Rs.450",
"wal203-Double Slimfold Wallet-Rs.300",
"sht501-Formal Shirts-Rs.1500",
"sht502-Casual Shirts-Rs.1050",
"sht503-Kids Shirts-Rs.700"};

writeRecords(items);
}

private void writeRecords(String[] items) {
byte[] record;

try
{
// Only add the records once
if (rs.getNumRecords() > 0)
return;

for (int i = 0; i < items.length; i++)
{
record = items[i].getBytes();
rs.addRecord(record, 0, record.length);
}
}
catch (Exception e)
{
System.out.println("Exception in writing records: "+e.getMessage());
}
}

/*--------------------------------------------------
* Search using enumerator and record filter
*-------------------------------------------------*/
public void searchRecordStore()
{
int i =0;

try
{
System.out.println("Number of records: "+rs.getNumRecords());
// Record store is not empty
if (rs.getNumRecords() > 0)
{
// Setup the search filter with the user requested text
SearchFilter search = new SearchFilter(msc.code);

RecordEnumeration re = rs.enumerateRecords(search, null, false);


// A match was found using the filter
if (re.numRecords() > 0)
{

while (re.hasNextElement()) {
int id = re.nextRecordId();
System.out.println("Record ID: " + id);
String str2 = null;
str2 = new String(rs.getRecord(id));
item++;
append(str2);------->i have a problem here, i am unable to place in an array
//System.out.println("Values which start with" + str2);//+" are "+str1[i]);
//searchResult+=str2;
//System.out.println("Search Results: "+searchResult);

}


}

re.destroy(); // Free enumerator
}
itemDetails=items.toString();
System.out.println("Items are: "+items.toString());
}
catch (Exception e)
{
System.out.println("Exception in searching for a record: "+e.getMessage());
}
}

/*--------------------------------------------------
* Search for text within a record
* Each record passed in contains only text (String)
*-------------------------------------------------*/
public class SearchFilter implements RecordFilter
{
private String searchText = null;
private String searchNoResult = null;

public SearchFilter(String searchText)
{
// This is the text to search for
this.searchText = searchText.toLowerCase();
}

public boolean matches(byte[] candidate)
{
String str = new String(candidate).toLowerCase();

// Look for a match
if (searchText != null && str.startsWith(searchText))
return true;
else
searchNoResult="No Item Found";
return false;
}
}

Please help me out

[jitu_goldie]

hi all,
/*--------------------------------------------------
* Search using enumerator and record filter
*-------------------------------------------------*/
public void searchRecordStore()
{
int i =0;

try
{
System.out.println("Number of records: "+rs.getNumRecords());
// Record store is not empty
if (rs.getNumRecords() > 0)
{
// Setup the search filter with the user requested text
SearchFilter search = new SearchFilter(msc.code);

RecordEnumeration re = rs.enumerateRecords(search, null, false);


// A match was found using the filter
if (re.numRecords() > 0)
{

while (re.hasNextElement()) {
int id = re.nextRecordId();
System.out.println("Record ID: " + id);
String str2 = null;
str2 = new String(rs.getRecord(id));
item++;
append(str2);------->i have a problem here, i am unable to place in an array
//System.out.println("Values which start with" + str2);//+" are "+str1[i]);
//searchResult+=str2;
//System.out.println("Search Results: "+searchResult);

}


}

re.destroy(); // Free enumerator
}
itemDetails=items.toString();
System.out.println("Items are: "+items.toString());
}
catch (Exception e)
{
System.out.println("Exception in searching for a record: "+e.getMessage());
}
}

Please explain the bold lines.

[honest_success]

hi all,
I have a problem in getting the retreived values from the record store and place it in an array.

The code is as follows:

public void append(String charText)
{
if(item>1)
this.items.append(charText+"*");
else
this.items.append(charText);
}

public void openRecStore()
{
try
{
// The second parameter indicates that the record store
// should be created if it does not exist
rs = RecordStore.openRecordStore("All Items", true );
}
catch (Exception e)
{
System.out.println("Exception in opening: "+e.getMessage());
}
}

public void closeRecStore()
{
try
{
rs.closeRecordStore();
}
catch (Exception e)
{
System.out.println("Exception in closing record: "+e.getMessage());
}
}

/*--------------------------------------------------
* Create array of data to write into record store
*-------------------------------------------------*/
public void writeTestData()
{
String[] items = {
"bag101-Laptop Bag-Rs.600",
"bag102-Travel Bag-Rs.500",
"bag103-School Bag-Rs.350",
"wal201-Leather Wallet-Rs.400",
"wal202-Trifold Wallet-Rs.450",
"wal203-Double Slimfold Wallet-Rs.300",
"sht501-Formal Shirts-Rs.1500",
"sht502-Casual Shirts-Rs.1050",
"sht503-Kids Shirts-Rs.700"};

writeRecords(items);
}

private void writeRecords(String[] items) {
byte[] record;

try
{
// Only add the records once
if (rs.getNumRecords() > 0)
return;

for (int i = 0; i < items.length; i++)
{
record = items[i].getBytes();
rs.addRecord(record, 0, record.length);
}
}
catch (Exception e)
{
System.out.println("Exception in writing records: "+e.getMessage());
}
}

/*--------------------------------------------------
* Search using enumerator and record filter
*-------------------------------------------------*/
public void searchRecordStore()
{
int i =0;

try
{
System.out.println("Number of records: "+rs.getNumRecords());
// Record store is not empty
if (rs.getNumRecords() > 0)
{
// Setup the search filter with the user requested text
SearchFilter search = new SearchFilter(msc.code);

RecordEnumeration re = rs.enumerateRecords(search, null, false);


// A match was found using the filter
if (re.numRecords() > 0)
{

while (re.hasNextElement()) {
int id = re.nextRecordId();
System.out.println("Record ID: " + id);
String str2 = null;
str2 = new String(rs.getRecord(id));
item++;
append(str2);------->i have a problem here, i am unable to place in an array
//System.out.println("Values which start with" + str2);//+" are "+str1[i]);
//searchResult+=str2;
//System.out.println("Search Results: "+searchResult);

}


}

re.destroy(); // Free enumerator
}
itemDetails=items.toString();
System.out.println("Items are: "+items.toString());
}
catch (Exception e)
{
System.out.println("Exception in searching for a record: "+e.getMessage());
}
}

/*--------------------------------------------------
* Search for text within a record
* Each record passed in contains only text (String)
*-------------------------------------------------*/
public class SearchFilter implements RecordFilter
{
private String searchText = null;
private String searchNoResult = null;

public SearchFilter(String searchText)
{
// This is the text to search for
this.searchText = searchText.toLowerCase();
}

public boolean matches(byte[] candidate)
{
String str = new String(candidate).toLowerCase();

// Look for a match
if (searchText != null && str.startsWith(searchText))
return true;
else
searchNoResult="No Item Found";
return false;
}
}

Please help me out

Dear udaykapavarapu welcome to the forum nokia. Are you getting any exception or there is any logical error in storing data ?

[raj_J2ME]

Hi,
Would appreciate if we all can try not to quote the complete section of the post..

if (re.numRecords() > 0)
{
while (re.hasNextElement()) {
int id = re.nextRecordId();
System.out.println("Record ID: " + id);
String str2 = null;
str2 = new String(rs.getRecord(id));
item++;
append(str2);------->i have a problem here, i am unable to place in an array
//System.out.println("Values which start with" + str2);//+" are "+str1[i]);
//searchResult+=str2;
//System.out.println("Search Results: "+searchResult);

}
}

Can you please provide the more details..about the issue you are facing...
which exception/error you are getting?
is this null pointer exception..

One thing I would like to tell you is that you are declaring the string in a while loop as locally and then assigning the value....why do not you declare that string out the loop......try this out.

else come with more details...

[jitu_goldie]

hi,
why r u making ur code so confusing. U have to just read out the records from RMS and have to save them in a string array..

can u try this..

int number = 0;
String[] records;
try{
openDB();
number = recordSTORE.getNumRecords();
System.out.println("NUMBER OF RECORDS ---"+number);
closeDB();
}catch(Exception exception)
{
exception.printStackTrace();
}
records = new String[number];
try{
openDB();
for (int i=0; i<number;i++)
{
records[i] = new String(recordSTORE.getRecord(i+1));
}
closeDB();
}
catch(Exception exception)
{
exception.printStackTrace();
}

If ur need is quite different then please do post with full explanations and problems..