[Rdfapi-php-svn] SF.net SVN: rdfapi-php: [508] trunk/rdfapi-php/api/syntax/N3Serializer.php

[<cw...@us...>]

Revision: 508
          http://rdfapi-php.svn.sourceforge.net/rdfapi-php/?rev=508&view=rev
Author:   cweiske
Date:     2007-08-13 04:13:15 -0700 (Mon, 13 Aug 2007)

Log Message:
-----------
Add N3Parser class option for output compression via []

Modified Paths:
--------------
    trunk/rdfapi-php/api/syntax/N3Serializer.php

Modified: trunk/rdfapi-php/api/syntax/N3Serializer.php
===================================================================
--- trunk/rdfapi-php/api/syntax/N3Serializer.php	2007-08-13 10:00:37 UTC (rev 507)
+++ trunk/rdfapi-php/api/syntax/N3Serializer.php	2007-08-13 11:13:15 UTC (rev 508)
@@ -43,6 +43,8 @@
   var $res;
   var $anon;
 
+  var $styleCompress = false;
+
    /**
     * Constructor
     *
@@ -200,6 +202,14 @@
    };
  }
 
+    /**
+    * Set to true, if the N3 serializer should try to compress the blank node
+    *  syntax using [] whereever possible.
+    */
+    function setCompress($compress)
+    {
+        $this->styleCompress = $compress;
+    }
 
   /* ==================== Private Methods from here ==================== */
 
@@ -274,6 +284,7 @@
     }
 
     $this->done[$r->getURI()]=TRUE;
+    $compress = false;
 
     if ( is_a($r, 'Resource') ) {
 
@@ -281,11 +292,11 @@
 
       	 //test, if this blanknode is referenced somewhere
       	$rbn=$this->model->find(null, null, $r);
-
-      	if (count($rbn->triples)>0 | !N3SER_BNODE_SHORT) {
+        $compress = count($rbn->triples) == 0 && (N3SER_BNODE_SHORT || $this->styleCompress);
+      	if ($compress) {
+      		$out.='[ ';
+      	} else {
       		$out.='_:'.$r->getLabel();
-      	} else {
-      		$out.='[ ';
       	};
       } else {
 
@@ -347,7 +358,9 @@
       }
     }
 
-	if (isset($rbn) && !count($rbn->triples)>0 && N3SER_BNODE_SHORT) {$out.=' ] ';};
+	if ($compress) {
+	   $out .= ' ] ';
+    };
     $this->resourcetext[$r->getURI()]=$out;
 
     return TRUE;


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