EDIT

modules/cdm_dataportal/cdm_api/cdm_node.php -text

modules/cdm_dataportal/node_types.php -text

  db_query("

    CREATE TABLE {node_cdm} (

      `nid` int(11) NOT NULL,

      `wsuri` varchar(255) default NULL,

      `cdmtype` varchar(255) default NULL,

      `uuid` varchar(255) default NULL,

      PRIMARY KEY  (`uuid`)

    ) /*!40100 DEFAULT CHARACTER SET UTF8 */  

    ");

require_once ('cdm_node.php');

    $requirements['cdm_api']['value'] =  'CURL php extension is available and will be used by the cdm api. HTTP requests thus will be up to 20x faster';

    $requirements['cdm_api']['value'] =  'CURL php extension is missing. If CURL lib is installed HTTP requests will be up to 20x faster';

  $requirements['cdm_api']['severity'] =  (function_exists('curl_init') ? REQUIREMENT_OK : REQUIREMENT_INFO);

    $header['Accept'] = (variable_get('cdm_webservice_type', 'json') == 'json' ? 'application/json' : 'text/xml');

    $header['Accept-Language'] = $locale;

    $header['Accept-Charset'] = 'UTF-8';

 $response = drupal_http_request($uri, $header, $method);

 return $response->data;

function _http_request_using_curl($uri, $headers = array(), $method = "GET", $parameters = array())

  // modify headers array to be used by curl

  foreach($headers as $header_key=>$header_val){

    $curl_headers[] = $header_key.': '.$header_val;

  }

  curl_setopt ($ch, CURLOPT_HTTPHEADER, $curl_headers);

<?php

function cdm_load_node($nodetype, $uuid, $title){

  // try to find node id

  $cdmnode = db_fetch_object(db_query('SELECT nid, cdmtype FROM {node_cdm} WHERE wsuri = \'%s\' AND cdmtype = \'%s\' AND uuid = \'%s\''

      , variable_get('cdm_webservice_url', NULL),  $nodetype, $uuid));

  if(is_numeric($cdmnode->nid)) {

    $node = node_load($cdmnode->nid);

  } else {

    // Create a new node

    $node->type = 'cdm_'.$nodetype;

    // use just the plain text of the HTML title

    $values['title'] = filter_xss($title, array()); 

    // limit length to the max length of the database field 128  

    $values['title'] = substr($values['title'], 0, 128);

    // preserve the current messages but before  saveing the node, 

    $messages = drupal_set_message();

    $result = drupal_execute($node->type.'_node_form', $values, $node);

    // restore the messages

    if(isset($messages)){

      $_SESSION['messages'] = $messages;

    }

    if(!is_array($result)){

      // result should contain the path the newly created node; e.g.: node/32

      $pathelements = explode('/', $result);

      $nid = array_pop($pathelements); 

      $node->nid = $nid;

      db_query('INSERT INTO {node_cdm} (nid, wsuri, cdmtype, uuid) VALUES (%d, \'%s\', \'%s\', \'%s\');'

        , $nid, variable_get('cdm_webservice_url', NULL),  $nodetype, $uuid);

    } else {

      drupal_set_message(t('Could not create node for ' . $nodetype),'error');

    }

  }

  return $node;

}

/**

 * 

 * @param $cdm_node_type one of the NODETYPE_* constants 

 * @param $uuid

 * @param $content

 * @param $title

 * 

 */

function cdm_node_show($cdm_node_type, $uuid, $title, $content){

    $node = cdm_load_node($cdm_node_type, $uuid, $title);

    drupal_set_title($title);

    cdm_add_node_content($node, $content, variable_get('cdm_content_weight', -1));

    return node_show($node, null); //TODO is using null for cid OK?

}

/**

 * 

 * @param $node

 * @param $content

 * @param $weight

 * @return unknown_type

 */

function cdm_add_node_content(&$node, &$content, $weight){

    $cdm_content = array(

        '#value' => $content, 

        '#weight' => variable_get('cdm_content_weight', -1)

    );

    $node->content['cdm'] = $cdm_content;

}

require_once('node_types.php');

      'callback' => 'cdm_dataportal_taxon_page_view',

      'callback' => 'cdm_dataportal_taxon_page_view',

      'callback' => 'cdm_dataportal_taxon_page_view',

      'callback' => 'cdm_dataportal_taxon_page_view',

      'callback' => 'cdm_dataportal_taxon_page_view',

    '#title' => t('Show media thumbnails for synonyms'),

 *  - All description associated with the taxon.

 * @param $uuid

 * @param $chapter name of the part to display,

 *         valid values are: 'description', 'images', 'synonymy', 'all'

 * @return unknown_type

function cdm_dataportal_taxon_page_view($uuid, $chapter = 'all'){

    $taxonpage = cdm_dataportal_taxon_view($uuid, $chapter); 

    return cdm_node_show(NODETYPE_TAXON, $uuid, $taxonpage->title , $taxonpage->content);

}

/**

 * @param $uuid

 * @param $chapter name of the part to display,

 *         valid values are: 'description', 'images', 'synonymy', 'all'

 * @return unknown_type

 */

function cdm_dataportal_taxon_view($uuid, $chapter = 'all'){

    $taxonpage->title = theme('cdm_taxon_page_title', $taxon);

    $taxonpage->content = theme('cdm_taxon_page_general', $taxon, $chapter);

    return $taxonpage;

<?php

define(NODETYPE_TAXON, 'taxon');

define(NODETYPE_MEDIA, 'media');

define(NODETYPE_REFERENCE, 'reference');

/**

 * Implementation of hook_node_info().

 */

function cdm_dataportal_node_info() {

  static $nodetypes;

  if(!$nodetype){

    $nodetypes = array(NODETYPE_REFERENCE, NODETYPE_TAXON, NODETYPE_MEDIA); 

  }

  $nodeinfo = array();

  foreach( $nodetypes as $type){

    $nodeinfo['cdm_'.$type] = array(

      'name' => t(ucfirst($type)),

      'has_title' => TRUE,

      'module' => 'cdm_dataportal',

      'description' => t('Node type with reflects cdm entities of the type' . $type . '.')

    );

  }

  return $nodeinfo;

}

/**

 *  Implementation of hook_form()

 */

function cdm_dataportal_form(&$node) {

  $type = node_get_types('type', $node);

  if(is_numeric($node->nid)){

    $cdm_node_notice = t('In order to edit CDM content, please use the '). l(t('Taxonomic Editor'), 'http://dev.e-taxonomy.eu/trac/wiki/TaxonomicEditor', NULL, NULL, TRUE);   

  } else {

    $cdm_node_notice = t('You cannot manually create a node of type ').$type->name . '. '. t('This node type is only created internally');

  }

  $form['cdm'] = array(

    '#value' => '<div class="cdm_node_notice warning">' . $cdm_node_notice . '</div>',

    '#weight' => -5

  );

  // We need to define form elements for the node's title and body.

  $form['title'] = array(

    '#type' => 'textfield',

    '#title' => check_plain($type->title_label),

    '#required' => TRUE,

    '#disabled' => TRUE,

    '#default_value' => $node->title,

    '#weight' => -5

  );

  return $form;

}

/**

 * Implementation of hook_nodeapi().

 */

function cdm_dataportal_nodeapi(&$node, $op, $teaser, $page) {

  switch ($op) {

    case 'view':

      switch($node->type){

        case 'cdm_'.NODETYPE_TAXON : 

          if(arg(0) == 'node'){

            $cdmnode = db_fetch_object(db_query('SELECT * FROM {node_cdm} WHERE nid = \'%d\''

              , $node->nid));

            $taxonpage = cdm_dataportal_taxon_view($cdmnode->uuid);

            drupal_set_title($taxonpage->title);

            cdm_add_node_content($node, $taxonpage->content, variable_get('cdm_content_weight', -1));

          }

          break;

      }

      break;   

  }

}