How to do a Search?

Question

One thing I don't see mentioned on this forum is an example of how to do a search.
What I am trying to do is have a user put in some information, press a Execute Query button and they would be able to scroll through the DB records that match their search criteria.
Is there any such beast available on the internet? Anyone out there have any example like this they are willing to share? If you have ever worked with Querying on an Oracle form, it would behave similiar to that.
Thanks,
Ritchie

Answer 1

Create a new project, drag the following components to the page:
Text Field, Button, two Output Text, Data Table
Then go to the Server Navigator and drag the PRODUCT_TBL to the Data Table (it's under Data Sources > Order > Tables). Make sure that PointBase is started.
Double click on the rowset object that was created when you dropped the database table on top of the Data Table component. Add the following to the SQL:
WHERE UPPER(PBPUBLIC.PRODUCT_TBL.DESCRIPTION) LIKE ?Disregard the Parse Error message.
Add some initialization code in the Page1 constructor:
        // Additional user provided initialization code
        try {
             product_tblRowSet.setString(1, "%");
        } catch (Exception ex) {
            log("init error");
        }Then double click the button component and fill in the event handler with:
    public String button1_action() {
        // User event code here...
        String searchTerm = getTextField1().getValue().toString();
        String showSearch = "<none>";
        if (searchTerm == null||searchTerm.length()== 0) {
            // set the search value to the wildcard for the SQL LIKE operator
            searchTerm = "%";
        } else {
            showSearch = searchTerm;
            // format the search term for the SQL LIKE operator
            searchTerm = "%"+searchTerm+"%";
            log(searchTerm);
        // show the search term on the output page
        outputText1.setValue(showSearch);
        // set the search parameter
        try {
            product_tblRowSet.setString(1, searchTerm.toUpperCase());
            dataTable1Model.execute();
            // move the cursor to the end to count the rows returned by the query
            product_tblRowSet.last();
            int numRows = product_tblRowSet.getRow();
            // set display to number of rows
            outputText2.setValue(new Integer(numRows));
        } catch (Exception ex) {
            log("error");
            ex.printStackTrace();
        return null;
    }Now run the project. Enter a term like "com" in the text field and press the button. 8 rows that contain "com" in the description will be returned.
-jeff