SQL IN clause with Bind parameter?

Question

Hi
I have a simple task that hasn't been so simple to figure out. I want to allow a user to search for one or more comma-separated values in a simple JClient ADF app. Is there a way to use a SQL IN clause with a single bind variable? e.g. SELECT TITLE FROM CITATION WHERE ID IN (:0)
When I pass a single value it works fine but a comma separated list doesn't.
Thanks
John

Answer 1

Update: I wanted to combine the techniques found in two of Steve Muench's articles -
1) Providing Default Values for View Object Bind Variables (so I could display an ADF-bound JPanel with defaults)
http://radio.weblogs.com/0118231/stories/2004/10/07/providingDefaultValuesForViewObjectBindVariables.html
2) Array of String Domain Example (so a user could enter one or more comma-separated values into a text box for DB searches)
http://radio.weblogs.com/0118231/stories/2004/09/23/notYetDocumentedAdfSampleApplications.html
I learned some helpful stuff about the framework but spent lots of time banging my head against the wall because the two examples wouldn't work when directly combined. To best understand this, be sure to study Steve's examples above.
In example 1 Steve passes an array of objects (Object[] DEFAULT_VALUES) to the ViewObject's where clause using the setWhereClauseParams(Object[] values). However, in example 2 he creates an Oracle Array which contains an Oracle ArrayDescriptor, Connection, and array of values to pass to the "IN" bind variable. Also, example 1 allows for multiple bind vars to be included whereas example 2 allows for an array of data to be passed to a single bind var. Even though my code provides an array to a single bind var (per ex. 2) it should still allow for the passage of multiple bind vars with minimal code modification.
Code from Steve's example 1 was copied into my EmpView ViewObject but certain modifications were necessary:
1) Change the ViewObject's DEFAULT_VALUES from Object[] to String[].
2) Modify the executeQueryForCollection() method in the ViewObject to call a function which will set the bind variables as Oracle Arrays (effectively converting the "params" data type from that of String[] to Oracle Array[])
3) Create a setManagerID(String[]) method in the EmpView object and expose it to the client.
(there are a number of others so it's best for you to go through the code and compare)
I finally got it working so I'm attaching the code, however beware - I'm new to this so there may be other, better ways to go about it. Also, there are no framework bind vars so that section of code is never executed...it compiles but may fail at run time.
In order for this to work I suggest you use JDev to re-create the EmpView and Panel1 objects. This will ensure that the necessary ADF framework components are generated. Once complete, then copy in the code provided.
*File: EmpViewImpl.java
*Created as Read-Only access view object with the
*query:
*select manager_id, last_name from hr.employees
*where manager_id IN
*(select * from TABLE(CAST(:0 as TABLE_OF_VARCHAR)))
*order by manager_id
package model;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import oracle.jbo.domain.Array;
import oracle.jbo.server.ViewObjectImpl;
import oracle.sql.ArrayDescriptor;
// --- File generated by Oracle ADF Business Components Design Time.
// --- Custom code may be added to this class.
// --- Warning: Do not modify method signatures of generated methods.
public class EmpViewImpl extends ViewObjectImpl implements model.common.EmpView
private ArrayDescriptor descriptor;
private final static String[] DEFAULT_VALUES_STRING = new String[]{"100"};
private final static int NUM_DEFAULT_VALUES = DEFAULT_VALUES_STRING.length;
* This is the default constructor (do not remove)
public EmpViewImpl()
protected void executeQueryForCollection (Object qc, Object[] params, int numUserParams)
Object pars[] = null;
// Bind default variables only if none have been provided by the user
if (numUserParams == 0)
numUserParams = NUM_DEFAULT_VALUES;
int numFwkSuppliedBindVals = (params != null) ? params.length : 0;
if (numFwkSuppliedBindVals > 0)
// Allocate a new Object[] array with enough room for both user- and framework-supplied vars
Object[] newBinds = new Object[numFwkSuppliedBindVals + numUserParams];
// Copy the framework-supplied bind variables into a new Object[] array
// leaving enough slots at the beginning for the user-supplied vars
System.arraycopy(params, 0, newBinds, numUserParams, numFwkSuppliedBindVals);
// Now copy in the user-supplied vars to the beginning of the array
System.arraycopy(DEFAULT_VALUES_STRING, 0, newBinds, 0, numUserParams);
params = newBinds;
} else
params = DEFAULT_VALUES_STRING;
// We have to call this method to convert the default values into the proper Oracle Array expected by the query.
// If you set a debugger breakpoint at this line you can see that the "params" data type changes from String[] to Object[]
setWhereClauseParamsToDefaultValues();
// Now retrieve the params of the new data type
params = this.getWhereClauseParams();
super.executeQueryForCollection(qc, params, numUserParams);
private void setWhereClauseParamsToDefaultValues()
this.setManagerID(DEFAULT_VALUES_STRING);
private Connection getCurrentConnection() throws SQLException
// Create a bogus statement so that we can access our current connection
// JBD note - Does this get run each time??
PreparedStatement st = getDBTransaction().createPreparedStatement("commit", 1);
Connection conn = st.getConnection();
st.close();
return conn;
private synchronized void setupDescriptor(Connection conn) throws SQLException
descriptor = new ArrayDescriptor("TABLE_OF_VARCHAR", conn);
* setManagerID
* Exposed to client to accept an array of values (presumably passed in by user-entry into text box
* @param aryMan
public void setManagerID(String[] aryMan)
Array arr = null;
try
// Find the connection
Connection conn = getCurrentConnection();
//Create the ArrayDescriptor by looking for our custom data type in our connected DB
if(descriptor == null)
setupDescriptor(conn);
// Create the Oracle Array by passing in the descriptor, connection, and object array of data
arr = new Array(descriptor, conn, aryMan);
} catch (SQLException se)
System.out.println("SQL Exception: " + se.getMessage());
// Now we can set the WHERE clause parameter bind variable (index = 0) to the Oracle Array
if (arr != null) setWhereClauseParam(0, arr);
* FILE: Panel1.java
* Created as an empty panel. Then a JTextField, a
* JButton, and an EmpView1 table were dragged on.
* A custom actionPerformed method was created for the
* JButton which grabs the data from the text box.
* The user can enter either a single manager id or
* multiple, comma-separated ids.
* All code in this class was created by JDev except
* for the Jbutton action
package view;
import java.awt.*;
import javax.swing.*;
import model.common.*;
import oracle.jbo.ApplicationModule;
import oracle.jbo.SQLStmtException;
import oracle.jbo.uicli.jui.*;
import oracle.jbo.uicli.controls.*;
import oracle.jbo.uicli.binding.*;
import oracle.jdeveloper.layout.*;
import oracle.adf.model.*;
import oracle.adf.model.binding.*;
import java.util.ArrayList;
import oracle.jdeveloper.layout.VerticalFlowLayout;
import javax.swing.JTextField;
import javax.swing.JButton;
import javax.swing.JTable;
import javax.swing.table.TableModel;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
public class Panel1 extends JPanel implements JUPanel
* NOTE: You need to have previous created the Oracle8 type named
* ==== TABLE_OF_VARCHAR by doing the following at the SQL*Plus
* command prompt:
* create type table_of_varchar as table of varchar2(20)
// Panel binding definition used by design time
private JUPanelBinding panelBinding = new JUPanelBinding("Panel1UIModel");
private VerticalFlowLayout verticalFlowLayout1 = new VerticalFlowLayout();
private JTextField jTextField1 = new JTextField();
private JButton jButton1 = new JButton();
private JTable jTable1 = new JTable();
* The default constructor for panel
public Panel1()
* the JbInit method
public void jbInit() throws Exception
this.setLayout(verticalFlowLayout1);
jTextField1.setText("jTextField1");
jButton1.setText("jButton1");
jButton1.addActionListener(new ActionListener()
public void actionPerformed(ActionEvent e)
jButton1_actionPerformed(e);
this.add(jTextField1, null);
this.add(jButton1, null);
this.add(jTable1, null);
jTable1.setModel((TableModel)panelBinding.bindUIControl("EmpView1", jTable1));
public static void main(String [] args)
try
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
catch(Exception exemp)
exemp.printStackTrace();
Panel1 panel = new Panel1();
panel.setBindingContext(JUTestFrame.startTestFrame("DataBindings.cpx", "null", panel, panel.getPanelBinding(), new Dimension(400, 300)));
panel.revalidate();
* JUPanel implementation
public JUPanelBinding getPanelBinding()
return panelBinding;
private void unRegisterProjectGlobalVariables(BindingContext bindCtx)
JUUtil.unRegisterNavigationBarInterface(panelBinding, bindCtx);
private void registerProjectGlobalVariables(BindingContext bindCtx)
JUUtil.registerNavigationBarInterface(panelBinding, bindCtx);
public void setBindingContext(BindingContext bindCtx)
if (panelBinding.getPanel() == null)
panelBinding = panelBinding.setup(bindCtx, this);
registerProjectGlobalVariables(bindCtx);
panelBinding.refreshControl();
try
jbInit();
panelBinding.refreshControl();
catch(Exception ex)
panelBinding.reportException(ex);
private void jButton1_actionPerformed(ActionEvent e)
// Get the user-supplied values
String txt = jTextField1.getText();
String[] mIds = txt.split(",");
// Now trim
for (int i=0; i<mIds.length; i++)
mIds[i] = mIds.trim();
ApplicationModule am = (ApplicationModule)panelBinding.getDataControl().getDataProvider();
EmpView vo = (EmpView)am.findViewObject("EmpView1");
vo.setManagerID(mIds);
try
vo.executeQuery();
} catch (SQLStmtException s)
System.out.println("Query failed: " + s.getMessage());