[Rdfapi-php-interest] bNode and GENERAL_PREFIX_BASE variable

[Roberto SL <ref...@gm...>]

Hi all,
I am testing the RDF PHP API because it is my intention to integrate it
in an open source project.

However, while testing I have the following issues:

1. Error: Resource expected as predicate, no blank node allowed. in
xx/xx/Statement.php on line 66

Here is the code taken from the tutorial about MemModel
(http://www.wiwiss.fu-berlin.de/suhl/bizer/rdfapi/tutorial/usingthemodelapi.htm ) and which is generating that error:

<?php

define("RDFAPI_INCLUDE_DIR", "../rdfapi-php/api/");
include(RDFAPI_INCLUDE_DIR . "RdfAPI.php");

$someDoc = new Resource ("http://www.example.org/someDocument.html");
$creator = new Resource ("http://www.purl.org/dc/elements/1.1/creator");

$statement1 = new Statement ($someDoc, $creator, new Literal ("Radoslaw
Oldakowski"));

$model1 = ModelFactory::getDefaultModel();

$model1->add($statement1);

$model2 = ModelFactory::getDefaultModel();
$model2->add(new Statement($someDoc, new
Resource("http://www.example.org/myVocabulary/title"), new Literal("RAP
tutorial")));
$model2->add(new Statement($someDoc, new
Resource("http://www.example.org/myVocabulary/language"), new
Literal("English")));

$model1->addModel($model2);

$bNode = new BlankNode($model1);

$model1->replace(NULL, NULL, new Literal("Radoslaw Oldakowski"),
$bNode);

$model1->add(new Statement($bNode, $VCARD_FN, new Literal("Radoslaw
Oldakowski"))); 
$model1->add(new Statement($bNode, $VCARD_EMAIL, new
Literal("ra...@gm...")));

echo "\$model1 contains " .$model1->size() ." statements";

echo "<b>Output the MemModel as HTML table: </b><p>";
$model1->writeAsHtmlTable();

$model1->saveAs("model1.rdf", "rdf");
$model1->saveAs("model1.n3", "n3");

?>

2. I have noticed that beside the GENERAL_PREFIX_BASE variable there is
a number which derives from . $this->m_nextAutomaticPrefixIndex
specified in the RdfSerializer.php .

Why there is that number and is it possible to disable it?

Thanks again,

RSL