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How to fix "GetStatus Write RFID_API_UNKNOWN_ERROR data(x)- Field can Only Take Word values" Android RFID 8500 Zebra

I am trying to develop and application to read and write to RF tags. Reading is flawless, but I'm having issues with writing. Specifically the error "GetStatus Write RFID_API_UNKNOWN_ERROR data(x)- Field can Only Take Word values"
I have tried reverse-engineering the Zebra RFID API Mobile by obtaining the .apk and decoding it, but the code is obfuscated and I am not able to decypher why that application's Write works and mine doesn't.
I see the error in the https://www.ptsmobile.com/rfd8500/rfd8500-rfid-developer-guide.pdf at page 185, but I have no idea what's causing it.
I've tried forcefully changing the writeData to Hex, before I realized that the API does that on its own, I've tried changing the Length of the writeData as well, but it just gets a null value. I'm so lost.
public boolean WriteTag(String sourceEPC, long Password, MEMORY_BANK memory_bank, String targetData, int offset) {
Log.d(TAG, "WriteTag " + targetData);
try {
TagData tagData = null;
String tagId = sourceEPC;
TagAccess tagAccess = new TagAccess();
tagAccess.getClass();
TagAccess.WriteAccessParams writeAccessParams = tagAccess.new WriteAccessParams();
String writeData = targetData; //write data in string
writeAccessParams.setAccessPassword(Password);
writeAccessParams.setMemoryBank(MEMORY_BANK.MEMORY_BANK_USER);
writeAccessParams.setOffset(offset); // start writing from word offset 0
writeAccessParams.setWriteData(writeData);
// set retries in case of partial write happens
writeAccessParams.setWriteRetries(3);
// data length in words
System.out.println("length: " + writeData.length()/4);
System.out.println("length: " + writeData.length());
writeAccessParams.setWriteDataLength(writeData.length()/4);
// 5th parameter bPrefilter flag is true which means API will apply pre filter internally
// 6th parameter should be true in case of changing EPC ID it self i.e. source and target both is EPC
boolean useTIDfilter = memory_bank == MEMORY_BANK.MEMORY_BANK_EPC;
reader.Actions.TagAccess.writeWait(tagId, writeAccessParams, null, tagData, true, useTIDfilter);
} catch (InvalidUsageException e) {
System.out.println("INVALID USAGE EXCEPTION: " + e.getInfo());
e.printStackTrace();
return false;
} catch (OperationFailureException e) {
//System.out.println("OPERATION FAILURE EXCEPTION");
System.out.println("OPERATION FAILURE EXCEPTION: " + e.getResults().toString());
e.printStackTrace();
return false;
}
return true;
}
With
Password being 00
sourceEPC being the Tag ID obtained after reading
Memory Bank being MEMORY_BANK.MEMORY_BANK_USER
target data being "8426017056458"
offset being 0
It just keeps giving me "GetStatus Write RFID_API_UNKNOWN_ERROR data(x)- Field can Only Take Word values" and I have no idea why this is the case, nor I know what a "Word value" is, and i've searched for it. This is all under the "OperationFailureException", as well. Any help would be appreciated, as there's almost no resources online for this kind of thing.

Even this question is a bit older, I had the same problem so as far as I know this should be the answer.
Your target data "8426017056458" length is 13 and at writeAccessParams.setWriteDataLength(writeData.length()/4)
you are devide it with four. Now if you are trying to write the target data it is longer than the determined WriteDataLength. And this throws the Error.
One 'word' is 4 Hex => 16 Bits long. So your Data have to be filled up first and convert it to Hex.

Making an SQL lite DB from a CSV file in Android Studio

I got a CSV file, basically a list of cities with some codes.
In my app users write their city of birth, a list of cities appears suggesting it, when chose the city's code is used for other stuff.
Can I just move the .csv file in an Android Studio folder and just use it as a database made with sql lite?
If no, should I make the sql lite database in Android Studio (a DatabaseManager class with SqlOpenHelper and some queries if i got it), then copy the .csv? How can I just "copy" that?
EDIT: Sorry but I realized that my CSV file had too much columns and that'd be ugly and tiring to manually add the columns. So I used DB Browser for SQLite, now I got a .db file. Can I just put it in a specific database folder and querying it in my app?

Can I just move the .csv file in an Android Studio folder and just use
it as a database made with sql lite?
No.
A sqlite database, i.e. the file, has to be formatted so that the SQLite routines can access the data enclosed therein. e.g. the first 16 bytes of the file MUST BE SQLite format 3\000 and so on, as per Database File Format
If no, should I make the sql lite database in Android Studio (a
DatabaseManager class with SqlOpenHelper and some queries if i got
it), then copy the .csv?
You have various options e.g. :-
You could copy the csv file into an appropriate location so that it will be part of the package (e.g. the assets folder) and then have a routine to generate the appropriate rows in the appropriate table(s). This would require creating the database within the App.
You could simply hard code the inserts within the App. Again this would require creating the database within the App.
You could use an SQLite Tool to create a pre-populated database, copy this into the assets folder (assets/databases if using SQLiteAssetHelper) and copy the database from the assets folder. No need to have a csv file in this case.
Example of option 1
As an example that is close to option 1 (albeit that the data isn't stored in the database) the following code extracts data from a csv file from the assets folder.
This option is used in this case as the file changes on an annual basis, so changing the file and then distributing the App applies the changes.
The file looks like :-
# This file contains annual figures
# 5 figures are required for each year and are comma seperated
# 1) The year to which the figures are relevant
# 2) The annualised MTAWE (Male Total Average Weekly Earnings)
# 3) The annual Parenting Payment Single (used to determine fixed assessment)
# 4) The fixed assessment annual rate
# 5) The Child Support Minimum Annual Rate
# Lines starting with # are comments and are ignored
2006,50648,13040,1040,320
2007,52073,13315,1102,330
2008,54756,13980,1122,339
2009,56425,13980,1178,356
2010,58854,14615,1193,360
2011,61781,15909,1226,370
2012,64865,16679,1269,383
2013,67137,17256,1294,391
2014,70569,18197,1322,399
2015,70829,18728,1352,408
2016,71256,19011,1373,414
2017,72462,19201,1390,420
2018,73606,19568,1416,427
It is stored in the assets folder of the App as annual_changes.txt The following code is used to obtain the values (which could easily be added to a table) :-
private void BuildFormulaValues() {
mFormulaValues = new ArrayList<>();
mYears = new ArrayList<>();
StringBuilder errors = new StringBuilder();
try {
InputStream is = getAssets().open(formula_values_file);
BufferedReader bf = new BufferedReader(new InputStreamReader(is));
String line;
while ((line = bf.readLine()) != null ) {
if (line.substring(0,0).equals("#")) {
continue;
}
String[] values = line.split(",");
if (values.length == 5) {
try {
mFormulaValues.add(
new FormulaValues(
this,
Long.parseLong(values[0]),
Long.parseLong(values[1]),
Long.parseLong(values[2]),
Long.parseLong(values[3]),
Long.parseLong(values[4])
)
);
} catch (NumberFormatException e) {
if (errors.length() > 0) {
errors.append("\n");
}
errors.append(
this.getResources().getString(
R.string.invalid_formula_value_notnumeric)
);
continue;
}
mYears.add(values[0]);
} else {
if (errors.length() > 0) {
errors.append("\n");
errors.append(
getResources().getString(
R.string.invalid_formula_value_line)
);
}
}
}
} catch (IOException ioe) {
ioe.printStackTrace();
}
if (errors.length() > 0) {
String emsg = "Note CS CareCalculations may be inaccurate due to the following issues:-\n\n" +
errors.toString();
Toast.makeText(
this,
emsg,
Toast.LENGTH_SHORT
).show();
}
}

Try this for adding the.csv info to your DB
FileReader file = new FileReader(fileName);
BufferedReader buffer = new BufferedReader(file);
String line = "";
String tableName = "TABLE_NAME";
String columns = "_id, name, dt1, dt2, dt3";
String str1 = "INSERT INTO " + tableName + " (" + columns + ") values(";
String str2 = ");";
db.beginTransaction();
while ((line = buffer.readLine()) != null) {
StringBuilder sb = new StringBuilder(str1);
String[] str = line.split(",");
sb.append("'" + str[0] + "',");
sb.append(str[1] + "',");
sb.append(str[2] + "',");
sb.append(str[3] + "'");
sb.append(str[4] + "'");
sb.append(str2);
db.execSQL(sb.toString());
}
db.setTransactionSuccessful();
db.endTransaction();

VSAM file locking when writing to it using Java JDBC

This is my first time trying to read and write to a VSAM file. What I did was:
Created a Map for the File using VSE Navigator
Added the Java beans VSE Connector library to my eclipse Java project
Use the code show below to Write and Read to the KSDS file.
Reading the file is not a problem but when I tried to write to the file it only works if I go on the mainframe and close the File before running my java program but it locks the file for like an hour. You cannot open the file on the mainframe or do anything to it.
Anybody can help with this problem. Is there a special setting that I need to set up for the file on the mainframe ? Why do you first need to close the file on CICS to be able to write to it ? And why does it locks the file after writing to it ?
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.sql.*;
public class testVSAM {
public static void main(String argv[]){
Integer test = Integer.valueOf(2893);
String vsamCatalog = "VSESP.USER.CATALOG";
String FlightCluster = "FLIGHT.ORDERING.FLIGHTS";
String FlightMapName = "FLIGHT.TEST2.MAP";
try{
String ipAddr = "10.1.1.1";
String userID = "USER1";
String password = "PASSWORD";
java.sql.Connection jdbcCon;
java.sql.Driver jdbcDriver = (java.sql.Driver) Class.forName(
"com.ibm.vse.jdbc.VsamJdbcDriver").newInstance();
// Build the URL to use to connect
String url = "jdbc:vsam:"+ipAddr;
// Assign properties for the driver
java.util.Properties prop = new java.util.Properties();
prop.put("port", test);
prop.put("user", userID);
prop.put("password", password);
// Connect to the driver
jdbcCon = DriverManager.getConnection(url,prop);
try {
java.sql.PreparedStatement pstmt = jdbcCon.prepareStatement(
"INSERT INTO "+vsamCatalog+"\\"+FlightCluster+"\\"+FlightMapName+
" (RS_SERIAL1,RS_SERIAL2,RS_QTY1,RS_QTY2,RS_UPDATE,RS_UPTIME,RS_EMPNO,RS_PRINTFLAG,"+
"RS_PART_S,RS_PART_IN_A_P,RS_FILLER)"+" VALUES(?,?,?,?,?,?,?,?,?,?,?)");
//pstmt.setString(1, "12345678901234567890123003");
pstmt.setString(1, "1234567890");
pstmt.setString(2,"1234567890123");
pstmt.setInt(3,00);
pstmt.setInt(4,003);
pstmt.setString(5,"151209");
pstmt.setString(6, "094435");
pstmt.setString(7,"09932");
pstmt.setString(8,"P");
pstmt.setString(9,"Y");
pstmt.setString(10,"Y");
pstmt.setString(11," ");
// Execute the query
int num = pstmt.executeUpdate();
System.out.println(num);
pstmt.close();
}
catch (SQLException t)
{
System.out.println(t.toString());
}
try
{
// Get a statement
java.sql.Statement stmt = jdbcCon.createStatement();
// Execute the query ...
java.sql.ResultSet rs = stmt.executeQuery(
"SELECT * FROM "+vsamCatalog+"\\"+FlightCluster+"\\"+FlightMapName);
while (rs.next())
{
System.out.println(rs.getString("RS_SERIAL1") + " " + rs.getString("RS_SERIAL2")+ " " + rs.getString("RS_UPTIME")+ " " + rs.getString("RS_UPDATE"));
}
rs.close();
stmt.close();
}
catch (SQLException t)
{
}
}
catch (Exception e)
{
// do something appropriate with the exception, *at least*:
e.printStackTrace();
}
}
}
Note: the OS is z/VSE

The short answer to your original question is that KSDS VSAM is not a DBMS.
As you have discovered, you can define the VSAM file such that you can update it both from batch and from CICS, but as #BillWoodger points out, you must serialize your updates yourself.
Another approach would be to do all updates from the CICS region, and have your Java application send a REST or SOAP or MQ message to CICS to request its updates. This does require there be a CICS program to catch the requests from the Java application and perform the updates.

The IBM Mainframe under z/VSE has different partitions that run different jobs. For example partition F7 CICS, partition F8 Batch Jobs, ETC.
When you define a new VSAM file you have to set the SHAREOPTIONS of the file. When I define the file I set the SHAREOPTIONS (2 3). 2 Means that only one partition can write to the file.
So when the batch program (in a different partition to the CICS partition) which is called from Java was trying to write to the file it was not able to write to the file unless I close the file in CICS first.
To fix it I REDEFINE the CICS file with SHAREOPTIONS (4 3). 4 Means that multiple partitions of the Mainframe can write to it. Fixing the problem
Below is a part of the definition code where you set the SHAREOPTION:
* $$ JOB JNM=DEFFI,CLASS=9,DISP=D,PRI=9
* $$ LST CLASS=X,DISP=H,PRI=2,REMOTE=0,USER=JAVI
// JOB DEFFI
// EXEC IDCAMS,SIZE=AUTO
DEFINE CLUSTER -
( -
NAME (FLIGHT.ORDERING.FLIGHTS) -
RECORDS (2000 1000) -
INDEXED -
KEYS (26 0) -
RECORDSIZE (128 128) -
SHAREOPTIONS (4 3) -
VOLUMES (SYSWKE) -
) -
.
.
.

Read a image from a longblob MySQL very fast

As the title says, I wanna retrive images (stored in longblob) very fast when the jslider is moved. I have 360 cases, and it is work with no error, but the problem consist in the lag/delay of each case/image when the jslider is moved. I tested this idea with images retrived from local machine and it works very fast/clean. I know that the problem can be from the internet connection, but trust me I have at least 3-4 MB/s download/upload.
Few extra notes:
table engine: MyISAM
column: longblob with every image ~170-200 kb - .png
//calling jslider and setup
jslider1 = new javax.swing.JSlider(); //my jslider
jslider1.setMajorTickSpacing(10);
jslider1.setMaximum(360);
jslider1.setMinorTickSpacing(5);
jslider1.setOrientation(javax.swing.JSlider.VERTICAL);
//and my change event
private void jslider1StateChanged(javax.swing.event.ChangeEvent evt) {
int x = jslider1.getValue();
switch (x) {
case 1:
try {
String sql = "select imga from test where deg ='" + x + "'";
pst = conn.prepareStatement(sql);
rs = pst.executeQuery();
if (rs.next()) {
byte[] imagedata = rs.getBytes("imga");
format = new ImageIcon(imagedata);
jLabel1.setIcon(format); //where I put my image
}
} catch (Exception e) {
e.printStackTrace();
}
break;
case 2:
//[...] //I have 360 cases
}
} // close state changed

Why do you want to save the images in a longblob anyway? Can't you store them within the Jar itself. If you still want to retrieve from Database longblob consider using Caching to load your longblobs from the database and cache it in the local system using a Initializing Asynchronous Thread when your Swing application starts up.

reading huge data from database and writing into xml Java

I have huge data billions of records in tables what is the best way to read it in plain Java and write it in XML file?
Thanks

If by best you mean fastest - I would consider using native database tools to dump the files as this will be way faster than using JDBC.

Java (+Hibernate?) will slow the process down unnecessarily. Easier to do sqlplus script and spool formatted fields into your xml file.

On Toad you can right click a table and click export to xml. on the commercial version I think you can export all tables but I'm not sure

Another possibility (working with all db with a JDBC driver) would be to use Apache Cocoon. There are actually two ways: XSP ((alone or and with ESQL). Both technos are really quick to develop.
XSP alone example. Think of XSP as a little bit like JSP but generating XML instead of HTML. From a DB for instance.
<?xml version="1.0"?>
<xsp:page language="java" xmlns:xsp="http://apache.org/xsp"
xmlns:esql="http://apache.org/cocoon/SQL/v2"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://apache.org/cocoon/SQL/v2 xsd/esql.xsd"
space="strip">
<xsp:structure>
<xsp:include>java.sql.Connection</xsp:include>
<xsp:include>java.sql.DriverManager</xsp:include>
<xsp:include>java.sql.PreparedStatement</xsp:include>
<xsp:include>java.sql.SQLException</xsp:include>
<xsp:include>java.sql.ResultSet</xsp:include>
</xsp:structure>
<xsp:logic><![CDATA[
private static final String connectionString =
"jdbc:mysql://localhost/mandarin?user=mandarin&password=mandarin" ;
private Connection conn = null ;
private PreparedStatement pstmt = null ;
private void openDatabase() {
try {
DriverManager.registerDriver(new com.mysql.jdbc.Driver());
conn = DriverManager.getConnection (connectionString);
pstmt = conn.prepareStatement(
"select " +
" count(*) as cardinality " +
" from " +
" unihan50 u " +
" where " +
" unicode_id >= ? and " +
" unicode_id <= ? " ) ;
} catch (SQLException e) {
e.printStackTrace();
}
}
private int getRangeCardinality ( int lowerBound, int upperBound ) {
int cnt = 0 ;
try {
cnt = 2 ;
pstmt.setInt ( 1, lowerBound ) ;
pstmt.setInt ( 2, upperBound ) ;
boolean sts = pstmt.execute () ;
if ( sts ) {
ResultSet rs = pstmt.getResultSet();
if (rs != null && rs.next() ) {
cnt = rs.getInt ( "cardinality" ) ;
}
}
} catch (SQLException e) {
e.printStackTrace();
}
return cnt ;
}
private void closeDatabase() {
try {
pstmt.close () ;
} catch (SQLException e) {
e.printStackTrace();
}
try {
conn.close () ;
} catch (SQLException e) {
e.printStackTrace();
}
}
]]>
</xsp:logic>
<ranges>
<xsp:logic><![CDATA[
openDatabase() ;
for ( int i = 0; i < 16 ; i++ ) {
int from = i * 0x1000 ;
int to = i * 0x1000 + 0x0fff ;
]]>
<range>
<from>0x<xsp:expr>Integer.toString(from, 16)</xsp:expr></from>
<to>0x<xsp:expr>Integer.toString(to, 16)</xsp:expr></to>
<count><xsp:expr>getRangeCardinality ( from, to )</xsp:expr></count>
</range>
}
closeDatabase () ;
</xsp:logic>
</ranges>
</xsp:page>
XSP is even more straightforward coupled with ESQL. Here is sample
<?xml version="1.0" encoding="UTF-8"?>
<xsp:page language="java" xmlns:xsp="http://apache.org/xsp"
xmlns:esql="http://apache.org/cocoon/SQL/v2"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsp-request="http://apache.org/xsp/request/2.0"
xsi:schemaLocation="http://apache.org/cocoon/SQL/v2 xsd/esql.xsd"
space="strip">
<keys>
<esql:connection>
<esql:pool>mandarinMySQL</esql:pool>
<esql:execute-query>
<esql:query><![CDATA[
select
unicode_id,
kMandarin,
...
from
unihan50_unified
where
add_strokes = 0
order by
radical
]]>
</esql:query>
<esql:results>
<esql:row-results><key><esql:get-columns /></key></esql:row-results>
</esql:results>
</esql:execute-query>
</esql:connection>
</keys>
</xsp:page>

I'll be using database inbuild procedure (e.g. XML path) to get data already converted in xml format.
Now there are 2 ways to write in the file:
1. If you have to have Java interface (JDBC) to retrieve data (due to business req) then I'll simply read this data and write in a File (No XML Parser involvement unless you need to verify the output).
2. If you do not have Java restriction then I'll simply write a Stored Procedure which will dump XML data in a file.
Update to comment:
Workflow for fastest retrieval:
Create Stored Procedure which will retrieve data and dump into a file.
Call this SP through Java (as you said you need it)
Either SP can return you the file name or you can create SP which will take file name so you can dynamically manage the output location.
I have not used Oracle for a very long time but I hope this link can help you to kickstart.

If the DB is Oracle, then you can simply use JDBC with a SQLX query. This will generate your result set directly as XML fragments on the server much faster than if you'd do it on your own on the client side. SQLX has been available since 8.1.7 as project Aurora and since 9i in standard as XMLDB.
Here is a simple example.
select XMLelement ("Process",
XMLelement( "number", p.p_ka_id, '.', p_id ),
XMLElement( "name", p.p_name ),
XMLElement ( "processGroup", pg.pg_name ) )
from
PMP_processes p,
PMP_process_groups pg
where
condition ;
In addition to XMLelement, SQLX has XMLattribute, XMLforest, XMLaggregate... which allows you any resulting tree.

Use StAX to write the xml, not DOM.

You can query to the database and retrieve all data into a RESULTSET and use the following code to start off a root element.
DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();
Document document = documentBuilder.newDocument();
Element Element_root = document.createElement("rootElement");
Thereafter you can add on as many as child elements using
Element Element_childnode = document.createElement("childnode");//create child node
Element_childnode.appendChild(document.createTextNode("Enter the value of text here"));//add data to child node
Element_root.appendChild(Element_childnode);//close the child node
Do not forget to close the opened node close the root at the end WITHOUT FAIL
Use this to close root.
document.appendChild(Element_causelist);
At the end if you have a XSD validate it your xml against it.....googling the validation online will provide good results.... http://tools.decisionsoft.com/schemaValidate/
NOTE : TIME !!! It will take time when data is huge nos...
But I think this is one and the most easiest way of doing it....Taking in consideration the data, I think one should run the program during down time when there is less traffic....
Hope this helps....Good Luck Gauls....

public class someclassname{
public static String somemethodname(){
String sql;
sql="SELECT * from yourdatabase.yourtable ";
return sql;
}
public static String anothermethodname(){
/*this is another method which is used to excute another query simultaneously*/
String sql;
sql="SELECT * from youdatabase.yourtable2";
return sql;
}
private static void saveasxml(String sql,String targetFile) throws SQLException, XMLStreamException, IOException{
int i,count;
FileOutputStream fos;
try{
Class.forName("com.mysql.jdbc.Driver");
Connection con=DriverManager.getConnection("jdbc:mysql://yourdomain:yourport/yourdatabase","username","password");
Statement stmt=con.createStatement();
ResultSet rs=stmt.executeQuery(sql);
ResultSetMetaData rsmd=rs.getMetaData();
count=rsmd.getColumnCount();
XMLOutputFactory outputFactory = XMLOutputFactory.newFactory();
fos=new FileOutputStream(targetFile);
XMLStreamWriter writer = outputFactory.createXMLStreamWriter(fos);
writer.writeStartDocument();
writer.writeCharacters("\n");
writer.writeStartElement("maintag line");
writer.writeCharacters("\n");
while(rs.next()){
writer.writeCharacters("\t");
writer.writeStartElement("foreveyrow-tagline");
writer.writeCharacters("\n\t");
for(i=1;i<count+1;i++){
writer.writeCharacters("\t");
writer.writeStartElement("Field"+i);
writer.writeCharacters(rs.getString(i));
writer.writeEndElement();
writer.writeCharacters("\n\t");
}
writer.writeEndElement();
writer.writeCharacters("\n");
}
writer.writeEndElement();
writer.writeEndDocument();
writer.close();
}catch(ClassNotFoundException | SQLException e){
}
}
public static void main(String args[]) throws Exception{
saveasxml(somemethodname(), " file location-path");
saveasxml(anothermethodname(), "file location path");
}
}

Thanks all for replying , so far i have managed to get a solution based on using threads and use multiple selects instead of one single complex sql joins (i hate SQL complex ones) life should be simple :) so i didn't waste too much time writing them i am using new threads for each select statements.
any better solution in POJO probabaly using spring is also fine
Thanks
gauls