static void go() {
PersistenceManager pm = null;
Transaction tx = null;
try {
pm = new JDOFactory().getFactory().getPersistenceManager();
tx = pm.currentTransaction();
Query q = pm.newQuery("javax.jdo.query.SQL", "select * from \"OAUTHTEMP\" where \"O_AUTH_TOKEN\"=:oAuthToken and \"O_AUTH_VERIFIED\"=:oAuthVerified");
Map params = new HashMap();
params.put("oAuthToken", "08f727ab-7132-426c-8fc2-9ce2b30ebf9d");
params.put("oAuthVerifier", "C3ExGzv+cAQkOqwL4oY94fZhDyVLyo/0H31w8F3q+YYLSBDxl2YARcglqPuKcsfT");
List<OAuthTemp> result = (List<OAuthTemp>) q.executeWithMap(params);
} catch (Exception e) {
e.printStackTrace();
}
}
This is my function to fetch all data on the basis of token and verifier but I am getting the exception below:
SQL query class has no persistent fields in the SELECT : select * from "OAUTHTEMP" where "O_AUTH_TOKEN"=:oAuthToken and "O_AUTH_VERIFIED"=:oAuthVerified
org.datanucleus.exceptions.NucleusUserException: SQL query class has no persistent fields in the SELECT : select * from "OAUTHTEMP" where "O_AUTH_TOKEN"=:oAuthToken and "O_AUTH_VERIFIED"=:oAuthVerified
at org.datanucleus.store.rdbms.query.SQLQuery.prepareForExecution(SQLQuery.java:994)
at org.datanucleus.store.rdbms.query.SQLQuery.executeWithMap(SQLQuery.java:818)
at org.datanucleus.api.jdo.JDOQuery.executeInternal(JDOQuery.java:369)
at org.datanucleus.api.jdo.JDOQuery.executeWithMap(JDOQuery.java:276)
at com.xenonstack.demo.test.Test.go(Test.java:61)
at com.xenonstack.demo.test.Test.main(Test.java:40)
My OAuthTemp class is this
OauthTemp class.
You seem to have a query with a parameter called oAuthVerified yet are providing a value for oAuthVerifier. Perhaps if you fix that it would work?
Related
I have many rpt files. I want to change the query for each report using C#. There are several ways to do this changes.
First way:
private void button_Test_Click(object sender, EventArgs e)
{
ReportDocument rptDoc = new ReportDocument();
rptDoc.Load("D:\\Temp_01\\Report1_Test.rpt");
rptDoc.SetDatabaseLogon("User", "Password", "ServName", "DBName");
CrystalDecisions.Shared.ConnectionInfo ConnInf;
ConnInf = rptDoc.Database.Tables[0].LogOnInfo.ConnectionInfo;
String strSQLQuery = "SELECT TOP(123) * FROM sys.all_objects";
String strTableName = rptDoc.Database.Tables[0].Name;
try
{
rptDoc.SetSQLCommandTable(ConnInf, strTableName, strSQLQuery);
rptDoc.VerifyDatabase();
}
catch (Exception ex) { rptDoc.Close(); }
rptDoc.SaveAs("D:\\Temp_02\\Report2_Test.rpt");
rptDoc.Close();
}
It is not the best way. The method SetSQLCommand does not work when the query has any parameters. Even if you set value for each parameter, SetSQLCommand does not work. The example with a parameter which does not work:
private void button_Test_Click(object sender, EventArgs e)
{
ReportDocument rptDoc = new ReportDocument();
rptDoc.Load("D:\\Temp_01\\Report1_Test.rpt");
rptDoc.SetDatabaseLogon("User", "Password", "ServName", "DBName");
CrystalDecisions.Shared.ConnectionInfo ConnInf;
ConnInf = rptDoc.Database.Tables[0].LogOnInfo.ConnectionInfo;
String strSQLQuery = "SELECT TOP(1) * FROM sys.all_objects WHERE name = {?strName}";
String strTableName = rptDoc.Database.Tables[0].Name;
try
{
rptDoc.SetParameterValue("strName", "Text");
rptDoc.SetSQLCommandTable(ConnInf, strTableName, strSQLQuery);
rptDoc.VerifyDatabase();
}
catch (Exception ex) { rptDoc.Close(); }
rptDoc.SaveAs("D:\\Temp_02\\Report2_Test.rpt");
rptDoc.Close();
}
It returns an error. This method does not work with parameters!
Second way:
private void button_Test_Click(object sender, EventArgs e)
{
ReportDocument rptDoc = new ReportDocument();
rptDoc.Load("D:\\Temp_01\\Report1_Test.rpt");
rptDoc.SetDatabaseLogon("User", "Password", "ServName", "DBName");
ISCDReportClientDocument rcd = null;
rcd = rptDoc.ReportClientDocument as ISCDReportClientDocument;
CommandTable rTblOld;
CommandTable rTblNew;
rTblOld = rcd.Database.Tables[0] as CommandTable;
rTblNew = rcd.Database.Tables[0].Clone(true) as CommandTable;
rTblNew.CommandText = "SELECT TOP(1) * FROM sys.all_objects";
try
{
rcd.DatabaseController.SetTableLocationEx(rTblOld, rTblNew);
rcd.VerifyDatabase();
}
catch (Exception ex) { rcd.Close(); }
rcd.SaveAs(rcd.DisplayName, "D:\\Temp_02\\", 1);
rcd.Close();
}
This is also not the best way. The method SetLocalTableEx does a struct of the report is bad. After run SetLocalTableEx, attribute ConnectionInf.UserId have value NULL also the Name of connection
After SetTableLocationEx:
rcd.DatabaseController.SetTableLocationEx(rTblOld, rTblNew);
String UserID;
UserID = rptDoc.Database.Tables[0].LogOnInfo.ConnectionInfo.UserID;
if (UserID == null) MessageBox.Show("UserID has NULL");
UserId has value NULL
Also, before run SetTableLocationEx, Connection Name is MSODBCSQL11
enter image description here
After run SetTableLocationEx, Connection Name is Command
enter image description here
So,
how do dynamic and correctly to change the query in CommandTable for Crystal Reports file?
Thanks,
Artem
You are using command in Crystal Report which is the best way when doing and displaying a data from database to crystal report but unfortunately you do it in Code Behind.
My Question is:
Why don't you do it in Command of Crystal Report itself?
see this link for more info.
The following Java code works:
public class TestH2Schema {
public static void main(String[] args) throws SQLException {
Driver driver = new org.h2.Driver();
Connection conn = driver.connect("jdbc:h2:file:D:/Users/Dims/Design/TESTS/SVHN_DB/db/svhn", null);
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery("SELECT ID FROM IMAGE WHERE PATH='train/1.png';");
while(rs.next()) {
System.out.println(rs.getLong("ID"));
}
rs.close();
stmt.close();
conn.close();
}
}
The following equivalent code in Matlab does not work:
driver = org.h2.Driver;
props = java.util.Properties;
conn = driver.connect('jdbc:h2:file:D:/Users/Dims/Design/TESTS/SVHN_DB/db/svhn', props);
stmt = conn.createStatement();
query = 'SELECT ID FROM IMAGE WHERE PATH=''train/1.png''';
rs = stmt.executeQuery(query);
while rs.next()
rs.getLong('ID')
end
rs.close();
stmt.close();
conn.close();
doesn't work causing exception
org.h2.jdbc.JdbcSQLException: Table IMAGE not found; SQL statement:
UPDATE
If I query
query = 'SELECT * FROM INFORMATION_SCHEMA.TABLES;'
I see a list of tables, but not mine ones. Looks like Matlab is somehow looking at different location or someting.
matlab search in "MatlabDatabase" (or another default data-source)
to use your own defined data-source you should declare it first
for example:
q1='use your_datasource';
q2='select * from INFORMATION_SCHEMA.TABLES';
exec(conn,q1);
exec(conn,q2);
I am trying to populate a ComboBox with a list that is populated by a SQL statement.
I tried this:
public void buildData(){
ObservableList<ComboBox> data = FXCollections.observableArrayList();
Connection conn = db.makeConnection();
try{
String SQL = "Select Feature from FeaturesTable Order By Feature";
ResultSet rs = conn.createStatement().executeQuery(SQL);
while(rs.next()){
ComboBox cb = new ComboBox();
cb.featureCombo.set(rs.getString("Feature"));
featureCombo.add(cb);
}
featureCombo.setItems(data);
}
catch(Exception e){
e.printStackTrace();
System.out.println("Error on Building Data");
}
}
I'm getting an error under cb.featureCombo.set of "featureCombo cannot be resolved or is not a field" but featureCombo exists as:
#FXML
private ObservableList<ComboBox> featureCombo;
and then another error under featureCombo.setItems(data); probably because of the same problem.
I'm not set on this method if someone has a better way to do this.
If you desire a ComboBox named featureCombo, you are going to have to declare it as a ComboBox and not as private ObservableList<ComboBox> featureCombo; which is making an ObservableList
Something like
#FXML
ComboBox<String> featureCombo;
Then in your method, you need to make a list of String to populate the ComboBox (you currently have a list of ComboBox)
public void buildData(){
ObservableList<String> data = FXCollections.observableArrayList(); //List of String
Connection conn = db.makeConnection();
try{
String SQL = "Select Feature from FeaturesTable Order By Feature";
ResultSet rs = conn.createStatement().executeQuery(SQL);
while(rs.next()){
data.add(rs.getString("Feature")); //add the String to the list
}
featureCombo.setItems(data); //Set the list of String as the data for your combo box
}
catch(Exception e){
e.printStackTrace();
System.out.println("Error on Building Data");
}
}
We are using java jdk 1.7.0_45, postgresql jdbc connector postgresql-9.3-1100.jdbc41.jar.
Here is a synopsis of our problem, as much as possible of code pasted below.
This code:
ResultSet rs = DbConn.getInstance().doQuery("Select d.deptId from Depts d");
while (rs.next()){
System.out.println(rs.getInt("d.deptId"));
Produces the error:
org.postgresql.util.PSQLException: The column name d.deptId was not found in this ResultSet.
This code:
ResultSet rs = DbConn.getInstance().doQuery("Select d.deptId from Depts d");
while (rs.next()){
System.out.println(rs.getInt("deptId"));
Produces no error.
Is there a way, besides removing the "d." from the first query, to make the first code snippet not throw the error message?
Here is the source code:
public class JoinTest {
#Test
public void test(){
boolean pass = false;
try {
ResultSet rs = DbConn.getInstance().doQuery("Select d.deptId from Depts d");
String label = rs.getMetaData().getColumnLabel(1); // What do you get?
System.out.println("label = " + label);
while (rs.next()){
System.out.println(rs.getInt("d.deptId"));
pass = true;
}
} catch (SQLException e) {
e.printStackTrace();
pass=false;
}
assertTrue(pass);
}
#Test
public void test2(){
boolean pass = false;
try {
ResultSet rs = DbConn.getInstance().doQuery("Select d.deptId from Depts d");
while (rs.next()){
System.out.println(rs.getInt("deptId"));
pass = true;
}
} catch (SQLException e) {
e.printStackTrace();
pass=false;
}
assertTrue(pass);
}
}
public class DbConn {
private static String url = "jdbc:postgresql://server:port/schema";
private static Properties props = new Properties(); {
props.setProperty("user","userid");
props.setProperty("password","passwprd");
}
private Connection conn;
private DbConn(){}
private static DbConn instance;
public static DbConn getInstance() throws SQLException{
if (instance == null){
instance = new DbConn();
instance.conn = DriverManager.getConnection(url, props);
}
return instance;
}
public ResultSet doQuery(String query) throws SQLException{
Logger.log("DbConn.doQuery: " + query);
Statement st = conn.createStatement();
ResultSet rs = st.executeQuery(query);
return rs;
}
}
}
The query:
select d.deptId from Depts d
produces a single-column resultset with the result-alias "deptId". There is no "d.deptId" column. If you want one, you can request that as the column alias instead:
select d.deptId AS "d.deptId" from Depts d
PgJDBC can't do anything about this because it has no idea that the resultset column "deptId" is related to the "d.deptId" in the select-list. Teaching it about that would force it to understand way more about the SQL it processes than would be desirable, and lead to maintenance and performance challenges.
The second one works - why isn't that acceptable?
You can also do this:
System.out.println(rs.getInt(1));
If you change the query you have to change the code, too.
I'm using Play framework 1.2.5 and I would like to optimize my SQL queries by creating stored procedures and using them but I don't know how to do.
To create the stored procedure via the Java code how should I do ? Also, should I do it in an #OnApplicationStart job so that I'm sure the procedures are created and stored when the application starts ?
After, how can I use my stored procedures ? Using which function ? How can I pass the parameters to my procedure ? How can I retrieve the result of my procedure ? (generally the result will be a SELECT query) And finally, is it possible to bind the result of my procedure to a model in the play framework ?
I have a lot of questions but I'm new to stored procedures with play framework and JPA and I would like to be sure I'm using them correctly
Thank you for your help
I don't know how you should create them. Perhaps the OnApplicationStart method is what you need. In my environment the procedures are already in place. We just use Play to invoke them. To invoke stored procedures, you should take a look at the Work interface. By implementing this you can execute statements in the database.
We've created a basic OracleProcedure class:
public class CallOracleProcedure implements Work {
private String anonymousPLSQL;
private String[] parameters;
public CallOracleProcedure(String anonymousPLSQL, String[] parameters) {
this.anonymousPLSQL = anonymousPLSQL;
this.parameters = parameters.clone();
}
/**
* Create a JDBC PreparedStatement and then execute the anonymous
* PL/SQL procedure.
*/
#Override
public void execute(Connection connection) {
PreparedStatement statement = null;
try {
statement = connection.prepareStatement("begin " + anonymousPLSQL + "; end;");
if (parameters != null) {
int i = 1;
for (String param : parameters) {
statement.setString(i++, param);
}
}
statement.executeUpdate();
} catch (SQLException e) {
Logger.error("Error performing anonymous pl/sql statement: '%s', with parameters: '%s' - catched error '%s'", anonymousPLSQL, parameters, e);
} finally {
if (statement != null) {
try {
statement.close();
} catch (Exception e) {
Logger.error("Error closing statement: %s", e);
}
}
}
}
}
For each specific stored procedure you can extend this class and pass the name and parameters to the constructor via super():
public class StoredProcedureCall extends CallOracleProcedure {
public StoredProcedureCall(String param) {
super("package.storedprocedure(?)", new String[] { orgname });
}
}
In your code you can then call it like this:
StoredProcedureCall procedure = new StoredProcedureCall("your parameter");
session.doWork(procedure);
If you need to call a procedure and retrieve a return value you can use a CallableStatement in the execute() method:
public class ProcedureWithReturnValue implements Work {
private final String parameter;
private String returnValue = null;
public ProcedureWithReturnValue (final String parameter) {
this.parameter = parameter;
}
#Override
public void execute(Connection connection) {
CallableStatement statement = null;
try {
statement = connection.prepareCall("begin ? := package.procedure(?); end;");
statement.registerOutParameter(1, OracleTypes.VARCHAR);
statement.setString(2, parameter);
statement.execute();
returnValue = statement.getString(1);
} catch (SQLException e) {
Logger.error("Error getting return value - catched error '%s'", e);
}
}
public String getReturnValue() {
return returnValue;
}
}
Take a look at evolutions (http://www.playframework.com/documentation/1.2.7/evolutions) for creating your stored procedures.