How could a cin lose object code?
I am currently using the System Exec.vi. For some reason the object code is now gone. Was there ever a problem with cin losing their object code.
Robert,
In order for LabVIEW to be capable of calling compiled functions of C from a running VI, the code must be loaded and unloaded into memory at the same time as the VI code itself. LabVIEW uses object code in the form of a .lsb file which is generated by the C compiler from the C source code using the ntlvsbm.mak file. This ntlvsbm.mak file is included in the CINtools directory in the LabVIEW folder. Do you have this file in this folder?
I've attached this file from my LabVIEW 7 folder.
Attachments:
ntlvsb.mak 2 KB
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How could I pass an object to the new initializing object, so that I can reference to the first object later?You mean something like
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private String name;
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This complex object has Address object embedded in it.
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String serverHost = "http://localhost:8082/soap/servlet/rpcrouter";
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Parameter p= null;
try {
System.out.println("here 0");
Response r=null;
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Vector parameters = new Vector();
System.out.println("here 1");
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System.out.println("here 3");
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r = c.invoke ( new URL(serverHost), "" );
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e.printStackTrace();
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at org.apache.soap.rpc.Call.invoke(Call.java:294)
at PersonClient.getPersonWithAddress(PersonClient.java:92)
at PersonClient.<init>(PersonClient.java:11)
at PersonClient.main(PersonClient.java:20)
java.lang.NullPointerException
at PersonClient.getPersonWithAddress(PersonClient.java:96)
at PersonClient.<init>(PersonClient.java:11)
at PersonClient.main(PersonClient.java:20)
I am here 1
Exception in thread "main" java.lang.NullPointerException
at PersonClient.<init>(PersonClient.java:13)
at PersonClient.main(PersonClient.java:20)
What could be the problem..? Is there any info on net how could i pass complex objects of this type in Java through SOAP RPC.
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jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(org.jdesktop.layout.GroupLayout.TRAILING, jPanel1Layout.createSequentialGroup()
.addContainerGap()
.add(jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING)
.add(org.jdesktop.layout.GroupLayout.LEADING, jPanel4, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.add(org.jdesktop.layout.GroupLayout.LEADING, jProgressBar1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 438, Short.MAX_VALUE))
.addContainerGap())
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(org.jdesktop.layout.GroupLayout.TRAILING, jPanel1Layout.createSequentialGroup()
.addContainerGap()
.add(jPanel4, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
.add(jProgressBar1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
jTabbedPane1.addTab("Search", jPanel1);
org.jdesktop.layout.GroupLayout jPanel2Layout = new org.jdesktop.layout.GroupLayout(jPanel2);
jPanel2.setLayout(jPanel2Layout);
jPanel2Layout.setHorizontalGroup(
jPanel2Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(0, 458, Short.MAX_VALUE)
jPanel2Layout.setVerticalGroup(
jPanel2Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(0, 401, Short.MAX_VALUE)
jTabbedPane1.addTab("Directory", jPanel2);
jSplitPane.setRightComponent(jTabbedPane1);
org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jSplitPane, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 675, Short.MAX_VALUE)
layout.setVerticalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jSplitPane)
pack();
}// </editor-fold>//GEN-END:initComponents
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
}//GEN-LAST:event_jButton1ActionPerformed
private void jButton2MouseClicked(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton2MouseClicked
jGrid.setModel(new javax.swing.table.DefaultTableModel(
new Object [][] {
{null, null, null, null, null, null, null, null, null, null},
{null, null, null, null, null, null, null, null, null, null},
{null, null, null, null, null, null, null, null, null, null},
{null, null, null, null, null, null, null, null, null, null}
new String [] {
"LName", "FName", "Position", "Department", "Office No", "Local No", "Office Mobile No", "Home No", "MobileNo", "Email Address"
jGrid.updateUI();
}//GEN-LAST:event_jButton2MouseClicked
private void jButton1MouseClicked(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton1MouseClicked
try {
//Load and register SQL Server driver
Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
//Establish a connection
Connection connection = DriverManager.getConnection("jdbc:microsoft:sqlserver://X.X.X.X:1433","MyAccount","MyPassword");
//Create a Statement object
Statement sql_stmt = connection.createStatement();
//Create a ResultSet object, execute the query and return a
// resultset
ResultSet rset = sql_stmt.executeQuery("SELECT * FROM EpxDirectory..Directory Order By LName");
// Populates a JTABLE Object
int i=0;
while (rset.next()){
String LName = rset.getString(1);
String FName = rset.getString(2);
String Position = rset.getString(3);
String Dept_Code = rset.getString(4);
String OffPhoneNo = rset.getString(5);
String LocalNo = rset.getString(6);
String OffMobileNo = rset.getString(7);
String HomePhoneNo = rset.getString(8);
String MobileNo = rset.getString(9);
String Email = rset.getString(10);
jGrid.updateUI();
jGrid.setValueAt(rset.getString(1).trim(),i,0);
jGrid.setValueAt(rset.getString(2).trim(),i,1);
jGrid.setValueAt(rset.getString(3).trim(),i,2);
jGrid.setValueAt(rset.getString(4).trim(),i,3);
jGrid.setValueAt(rset.getString(5).trim(),i,4);
jGrid.setValueAt(rset.getString(6).trim(),i,5);
jGrid.setValueAt(rset.getString(7).trim(),i,6);
jGrid.setValueAt(rset.getString(8).trim(),i,7);
jGrid.setValueAt(rset.getString(9).trim(),i,8);
jGrid.setValueAt(rset.getString(10).trim(),i,9);
i++;
//Close the ResultSet and Statement
rset.close();
sql_stmt.close();
//Close the database connection
connection.close();
System.out.println(Integer.toString(i) + " rows found");
} catch(Exception e) {
System.out.println("Failed to connect; Please view Stack Trace");
e.printStackTrace();
}//GEN-LAST:event_jButton1MouseClicked
private void formWindowOpened(java.awt.event.WindowEvent evt) {//GEN-FIRST:event_formWindowOpened
}//GEN-LAST:event_formWindowOpened
public static void run(){
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
frmMain frmMain = new frmMain();
frmMain.setLocationRelativeTo(null); // Center the JFrame on the
frmMain.setVisible(true);
private void exitApplication() {
// try {
// //gui.putStatus("Closing the connection....please wait.....");
// if(connection != null) {
// // connection.close(); //Closing the connection object.
// } catch(SQLException ex) { //Trap SQLException
// //gui.putStatus(ex.toString());
System.exit(0); //Exit the aplication
* @param args the command line arguments
public static void main(String args[]) {
run();
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JTable jGrid;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JPanel jPanel1;
private javax.swing.JPanel jPanel2;
private javax.swing.JPanel jPanel3;
private javax.swing.JPanel jPanel4;
private javax.swing.JPanel jPanel5;
private javax.swing.JProgressBar jProgressBar1;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JScrollPane jScrollPane2;
private javax.swing.JScrollPane jScrollPane3;
private javax.swing.JSplitPane jSplitPane;
private javax.swing.JTabbedPane jTabbedPane1;
private javax.swing.JTextField jTextField1;
private javax.swing.JTextField jTextField2;
private javax.swing.JTextField jTextField3;
private javax.swing.JTextField jTextField4;
private javax.swing.JTree jTree1;
// End of variables declaration//GEN-END:variables
}Use code tags.
Don't mix GUI and JDBC together. Split them out into separate classes.
You have a good start, but you will need to loop through your resultset and also pull the ResultSet metaData for you column headings -
I have a unit test that basically does the following:
Creates an app domain using minimum priviledges. The MarshalByRefObject that is living in the app domain, loads another assembly to execute. This new assembly basically takes in a data object defined in a separate assembly, and returns a
new data object of that type.
All this works fine in debug mode, or when running w/out code coverage. The Sandbox assembly is signed.
The exception that gets thrown is this:
Test method TestProject1.UnitTest1.TestMethod1 threw exception:
System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.Security.VerificationException: Operation could destabilize the runtime.
ClassLibrary3.Bar..ctor()
ClassLibrary2.Foo.TestMethod(Bar testBar)
System.RuntimeMethodHandle._InvokeMethodFast(IRuntimeMethodInfo method, Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeType typeOwner)
System.RuntimeMethodHandle.InvokeMethodFast(IRuntimeMethodInfo method, Object target, Object[] arguments, Signature sig, MethodAttributes methodAttributes, RuntimeType typeOwner)
System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks)
System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
System.Reflection.MethodBase.Invoke(Object obj, Object[] parameters)
ClassLibrary1.RemoteSandBox.Execute(String assemblyPath, String scriptType, String method, Object[] parameters)
ClassLibrary1.RemoteSandBox.Execute(String assemblyPath, String scriptType, String method, Object[] parameters)
ClassLibrary1.SandBox.Execute(String assemblyPath, String scriptType, String method, Object[] parameters) in c:\users\la22426\documents\visual studio 2010\Projects\TestProject1\ClassLibrary1\Sandbox.cs: line 43
TestProject1.UnitTest1.TestMethod1() in c:\users\la22426\documents\visual studio 2010\Projects\TestProject1\TestProject1\UnitTest1.cs: line 21
Unit Test code:
[TestClass]
public class UnitTest1
[TestMethod]
public void TestMethod1()
using (SandBox sandbox = new SandBox())
string assemblyLocation = Path.Combine(Environment.CurrentDirectory, @"..\..\..\ClassLibrary2\bin\Debug\ClassLibrary2.dll");
object result = sandbox.Execute(assemblyLocation, "ClassLibrary2.Foo", "TestMethod", new Bar() { X = "test" });
Assert.IsNotNull(result);
Data Object code:
namespace ClassLibrary3
[Serializable]
public class Bar
public Bar() { }
public string X { get; set; }
Assembly to execute code:
namespace ClassLibrary2
public class Foo
public Bar TestMethod(Bar testBar)
return new Bar() { X = testBar.X };
Sandbox code:
namespace ClassLibrary1
public class SandBox : IDisposable
AppDomain Domain { get; set; }
RemoteSandBox RemoteSandBox { get; set; }
public SandBox()
var setup = new AppDomainSetup()
ApplicationBase = AppDomain.CurrentDomain.BaseDirectory,
ApplicationName = Guid.NewGuid().ToString(),
DisallowBindingRedirects = true,
DisallowCodeDownload = true,
DisallowPublisherPolicy = true,
//DisallowApplicationBaseProbing = true,
var permissions = new PermissionSet(PermissionState.None);
permissions.AddPermission(new SecurityPermission(SecurityPermissionFlag.Execution));
permissions.AddPermission(new ReflectionPermission(PermissionState.Unrestricted));
this.Domain = AppDomain.CreateDomain(setup.ApplicationName, null, setup, permissions,
typeof(RemoteSandBox).Assembly.Evidence.GetHostEvidence<StrongName>());
this.RemoteSandBox = (RemoteSandBox)Activator.CreateInstanceFrom(this.Domain, typeof(RemoteSandBox).Assembly.ManifestModule.FullyQualifiedName, typeof(RemoteSandBox).FullName).Unwrap();
public object Execute(string assemblyPath, string scriptType, string method, params object[] parameters)
return this.RemoteSandBox.Execute(assemblyPath, scriptType, method, parameters);
public void Dispose()
if (this.Domain != null)
AppDomain.Unload(this.Domain);
class RemoteSandBox : MarshalByRefObject
public RemoteSandBox()
public object Execute(string assemblyPath, string scriptType, string method, params object[] parameters)
//we need some file io permissions to load the assembly
new FileIOPermission(FileIOPermissionAccess.Read | FileIOPermissionAccess.PathDiscovery, assemblyPath).Assert();
Assembly assembly;
try
assembly = Assembly.LoadFile(assemblyPath);
finally
CodeAccessPermission.RevertAssert();
Type type = assembly.GetType(scriptType, true);
MethodInfo methodInfo = type.GetMethod(method);
object instance = (methodInfo.IsStatic) ? null : Activator.CreateInstance(type);
object returnVal = null;
returnVal = methodInfo.Invoke(instance, parameters);
return returnVal;I marked the shared data library with the attributes:
[assembly: AllowPartiallyTrustedCallers]
[assembly: SecurityRules(SecurityRuleSet.Level2, SkipVerificationInFullTrust = true)]
And then marked the data class Bar with the attribute:
[SecuritySafeCritical]
And got a little more insight into what's going on:
Test method TestProject1.UnitTest1.TestMethod1 threw exception:
System.MethodAccessException: Attempt by security transparent method 'Microsoft.VisualStudio.Coverage.Init_d2f466df4c65e2a7bb5d7592c49efef0.Register()' to call native code through method 'Microsoft.VisualStudio.Coverage.Init_d2f466df4c65e2a7bb5d7592c49efef0.VSCoverRegisterAssembly(UInt32[],
System.String)' failed. Methods must be security critical or security safe-critical to call native code.
Microsoft.VisualStudio.Coverage.Init_d2f466df4c65e2a7bb5d7592c49efef0.Register()
ClassLibrary3.Bar..ctor() in c:\users\xxx\documents\visual studio 2010\Projects\TestProject1\ClassLibrary3\Bar.cs: line 13
TestProject1.UnitTest1.TestMethod1() in c:\users\xxx\documents\visual studio 2010\Projects\TestProject1\TestProject1\UnitTest1.cs: line 21
Since the injected code coverage il is doing some native stuff, it's throwing. Any ideas on how to allow this?
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