Tutorial typos affect success of application

Question

Hello,
I'm working through the Oracle® Application Development Framework Tutorial for Forms/4GL Developers 10g Release 3 (10.1.3) (http://www.oracle.com/technology/obe/ADFBC_tutorial_1013/ADFBC_tutorial.pdf), and I keep running into typos that are affecting what I'm trying to do. For example, on page 6-3 of the tutorial, for ServiceRequestImpl.java, this code is given:
<pre>
public Number getMaxHistoryLineNumber() {
RowSet hist = (RowSet)getServiceHistory();
Number maxLine = new Number(0);
while (hist.hasNext()) {
Number curLine = (Number) hist.next().getAttribute("LineNo");
if (curLine.compareTo(maxLine) > 0) {
maxLine = curLine;
hist.closeRowSet();
return maxLine;
</pre>
The second line is wrong:
<pre>
RowSet hist = (RowSet)getServiceHistory();
</pre>
getServiceHistories() is the correct method name.
Also, on page 6-4 of the tutorial, the code for overriding "create" in ServiceHistoryImpl.java is given:
<pre>
protected void create(AttributeList nameValuePair) {
super.create(nameValuePair);
// Add these lines below
setLineNo(getServiceRequest().getMaxHistoryLineNumber().add(1));
setCreatedBy((Number)getDBTransaction().getSession().
getUserData().get("CurrentUserId"));
boolean isTech =
getDBTransaction().getSession().isUserInRole("technician");
setSvhType(isTech ? "Technician" : "Customer");
</pre>
But the 4th line above is wrong:
<pre>
setLineNo(getServiceRequest().getMaxHistoryLineNumber().add(1));
</pre>
getServiceRequests() is the correct method name.
These are not the only mistakes by far, very frequently I am seeing incorrect variable and other names from place to place in the document. For example, a variable is called "x" here, but there it's called "xs" or some other typo. I can see where someone going into this with little Java or other programming knowledge would have an extremely hard time of this.
Please revisit the tutorials and correct these errors, this is very frustrating!
Thank you,
Teresa Robinson

Answer 1

I am so sorry, I didn't realize I was in the Forms forum. I don't know how this got here; my brain must be tired after learning so much from the tutorial.