Errata

Programming Web Services with XML-RPC

Errata for Programming Web Services with XML-RPC

Submit your own errata for this product.

The errata list is a list of errors and their corrections that were found after the product was released.

The following errata were submitted by our customers and have not yet been approved or disproved by the author or editor. They solely represent the opinion of the customer.

Color Key: Serious technical mistake Minor technical mistake Language or formatting error Typo Question Note Update

Version Location Description Submitted by Date submitted
Printed Page ix
3rd paragraph

4th line of graf - "if we would like work with them"
is missing "to" (or commas, if you're trying for an
old 'valley-girl' dialect).

 Anonymous   
Printed Page xi
4th Paragraph

The first sentence is missing the word "is". It reads:
"So in my humble opinion, XML-RPC the ultimate leveler.
There should be an "is" between "XML-RPC" and "the".

 Anonymous   
Printed Page 1
Chapter 4, XML-RPC and Perl

The end of chapter 4, XML-RPC and Perl, talks about a Perl package named Frontier::Responder. To my knowledge, no such
package exists (at least on CPAN). The Frontier packages include Frontier::Client, Frontier::Daemon and Frontier::RPC2::,
all of which seem properly documented and discussed in this chapter of the book. However, there is no Frontier::Responder.
Further, the Frontier:: packages have not changed in nearly 3 years, so I wonder how such misinformation could have arisen?

 Anonymous   
Printed Page 5
3rd paragraph

At the end of the fourth line, there is a hyphen unnecessarily appended to "work", so that the sentence reads
"Even if you work-within a single environment, you may find..."

 Anonymous   
Printed Page 19
Last paragraph

There is a space missing between the words "circumstance" and "and", so that the sentence reads
"From this circumstanceand the practical consideration that all..."

 Anonymous   
Printed Page 34
3rd paragraph

environmentsXML-RPC's use
should be
environments. XML-RPC's use

 Anonymous   
Printed Page 34
last paragraph

betweensystems
should be
between systems

 Anonymous   
Printed Page 40
Table 3-1

XML-RPC types for helma.xmlrpc (now apache XML-RPC) not support the type nil
(extension)!

 Anonymous   
Printed Page 50
first example source code

The correct method for testing equality of two strings in Java is:

if (methodName.equals("nameTester")) { ...

instead of

if (methodName=="nameTester") { ...

which only tests, if the String methodName and the String "nameTester" have
the same address in memory.

 Anonymous   
Printed Page 50
last but one line

The correct method to test two strings for equality in Java is:

if (methodName.equals("nameTester")) { ...

instead of

if (methodName=="nameTester") { ...

which only tests, if the String methodName and the String "nameTester" have
the same address.

 Anonymous   
Printed Page 55
lower part of source code

The statement

Object result = client.execute("area.anyArea", params)

differs from the preceding example and should be hightlighted.

 Anonymous   
Printed Page 58
8th line

"Usage: java AreaServer [port]");

should be

"Usage: java XLogServer[port]");

 Anonymous   
Printed Page 79
3rd paragraph

The first sentence begins

"When a users come to work ..."

It should begin

"When users come to work ..."

 Anonymous   
Printed Page 81
3rd line of source code example

The hash key "method" has to be "methods".

 Anonymous   
Printed Page 81
last but one paragraph, second sentence

"The Daemon object takes this value and it sends back ..."

should be

"The Daemon object takes this value and sends it back ..."

 Anonymous   
Printed Page 86
paragraph in the middle of the page beginning with "The SUM() ..."

The third sentence of this paragraph contains a formatting error:

The phrase "fetches the result" should not be printed with constant width.

 Anonymous   
Printed Page 87
source code snippet at the bottom of the page

To actually create a hash reference, the parentheses has to be replaced by
curly braces:

$map = {
punch_in => &punch_clock,
...
};

 Anonymous   
Printed Page 87
code snip

the $map should be a Hash %map or %method (since map is a perl keyword).

Frontier::Responder is available here:
http://www.taskboy.com/programs/Frontier_Responder/

with the following Synopsis:

--------
SYNOPSIS
use Frontier::Responder;
my %methods = (
add => sub{ $_[0] + $_[1] },
cat => sub{ $_[0] . $_[1] },
);
my $res = Frontier::Responder->new(
methods => \%methods,
);
print $res->answer;
-------

substituting the sub{ block },
with a sub ref &add
or as the book indicates:
&punch_clock

you will have working code.

 Anonymous   
Printed Page 94
1. paragraph

In the first example that tests for a XMLRPC scalar value, it should say : if ($xv-
>kindOf()=="scalar"){.
Instead it says : if($xv->kindOf=="scalar"){.

 Anonymous   
Printed Page 97
5th paragraph

The text reads:

"Subsequent parameters can also be added in order to the message by use of
the addParam() method, which takes exactly one xmlrpcval object as its
argument"

While the above statement is technically correct, IMHO a bit more
explanation regarding non-array params should be added.

I am using PHP include file xmlrpc.inc, v 1.18, 2001/07/06 and I have found
from usage and reviewing the xmlrpc.inc source that only array type params
are added to a new xmlrpcmsg in the xmlrpcmsg constructor. Single scalar
types must be added using xmlrpcmsg->addParam(). Inclusion of this bit of
info in the book would be helpful IMHO.

 Anonymous   
Printed Page 103
first code example on the bottom

The server includes for a php server are:
include("xmlrpc.inc");
include("xmlrpcs.inc");

not:
include("xmlrpc.inc");
include("xmlrpc.inc");

(They forgot the s on the secound include.)

 Anonymous   
Printed Page 103
2nd line of example code

The two include lines are shown to be the same:
include("xmlrpc.inc");
include("xmlrpc.inc");

According to the paragraph preceding these lines I think one of them, probably the 2nd, line should read:
include("xmlrpcs.inc");

 Anonymous  Oct 18, 2009 
Printed Page 122
8th-last line

import xmlrpc, time

should be

import xmlrpclib, time

 Anonymous   
Printed Page 145
Second paragraph from the bottom

There is a space missing between "suffices" and "for" in the third sentence, which
reads "A simple web page often sufficesfor this."

 Anonymous   
Printed Page 147
Code example at foot of page

The code is an example of how to build an XML-RPC listener in ASP and VBScript.
However, the addServerFunction command is missing from the code as listed and my
attempts to build something similar would not work until I added this.

Not sure if this is an omission in the book as my code is different in its function,
but thought it was worth pointing out.

 Anonymous   
Printed Page 151
In example 7-5

The grammar is incorrect in the following commment:
' First, if a record exist with this key, abort

I believe it should be "exists".

 Anonymous   
Printed Page 182
Third paragraph, first sentence

the word frequnetly has the characters 'n' and 'e' tranposed.

 Anonymous