!!! Listings zum Artikel "Jagd nach dem Schnäppchen"
!!! von Andreas Oesterhelt und Jan Seidler
!!! in iX 4/2008, S. 72

!!! Listing 1: Konfigurationsdaten

<?php 
/*
[ebay-config]
dev-key-prod = <bitte ergänzen>
app-key-prod = <bitte ergänzen>
cert-id-prod = <bitte ergänzen>
site-id = 77 ; eBay.de
app-mode = 0 ; 1 => sandbox, 0 => production

[ebay-transaction-config]
use-http-compression = 1
*/
?>

!!! Listing 2: PHP-Feed (6 Abschnitte)

<?php
// Abschnitt 1

require_once 'EbatNs/EbatNs_ServiceProxyShopping.php';
require_once 'EbatNs/FindItemsAdvancedRequestType.php';
require_once 'EbatNs/FindItemsAdvancedResponseType.php';
require_once 'EbatNs/EbatNs_DataConverter.php';

// Abschnitt 2

$session = new EbatNs_Session('config.php');

$proxy = new EbatNs_ServiceProxyShopping($session);
$proxy->setParserOption('NO_UNSET_METADATA', true);
$proxy->setParserOption('NO_REDUCE', true);

// Abschnitt 3

$request = new FindItemsAdvancedRequestType();
$request->setQueryKeywords(utf8_decode($_REQUEST['query']));
$request->setEndTimeFrom(date('Y-m-d H:i:s', time() + 120));
$request->setEndTimeTo(date('Y-m-d H:i:s', time() + 86400));
$request->setItemType('AuctionItemsOnly');
$request->setBidCountMax(0);

// Abschnitt 4

$request->setItemSort('EndTime');
$request->setSortOrder('Ascending');
$request->setMaxEntries(5);
$request->setPageNumber(isset($_REQUEST['page']) ? $_REQUEST['page'] : 1);

// Abschnitt 5

$result = $proxy->FindItemsAdvanced($request);
if ($proxy->isGood($result)) {
  $result->_elements['CurrentPage'] = array 
  (
    'required' => false,
    'type' => 'string',
    'nsURI' => 'urn:ebay:apis:eBLBaseComponents',
    'array' => false,
    'cardinality' => '0..1'
  );
  $result->CurrentPage = isset($_REQUEST['page']) ? $_REQUEST['page'] : 1;

// Abschnitt 6

  header('Content-Type: text/xml');
  echo('<?xml version="1.0" encoding="utf-8"?>');
  echo
  (
    $result->serialize
    (
      'ebaySearchResults', $result, null, true, null, new 
      EbatNs_DataConverterIso()
    )
  );
}
?>

!!! Listing 3: XSLT-Stylesheet

<?xml version="1.0"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

  <xsl:decimal-format decimal-separator="," grouping-separator="."/>

  <xsl:template match="/">
    <table cellpadding="0" cellspacing="2" border="0">
      <tr>
        <th>
          Bild
        </th>
        <th>
          Artikelbezeichnung
        </th>
        <th>
          Preis
        </th>
      </tr>
      <xsl:for-each select="ebaySearchResults/SearchResult/ItemArray/Simpleitem">
        <xsl:variable name="zeilentyp">
          <xsl:choose>
            <xsl:when test="position() mod 2 = 1">ungerade</xsl:when>
            <xsl:otherwise>gerade</xsl:otherwise>
          </xsl:choose>
        </xsl:variable>
        <tr class="zeile_{$zeilentyp}">
          <xsl:variable name="ItemLink" select="ViewItemURLForNaturalSearch"/>
          <td>
            <xsl:choose>
              <xsl:when test="GalleryURL">
                <a href="{$ItemLink}">
                  <img height="64" width="64" border="0" src="{normalize-space(GalleryURL)}" alt="{Title}"/>
                </a>
              </xsl:when>
              <xsl:otherwise>
                <a href="{$ItemLink}">
                  <img src="http://pics.ebaystatic.com/aw/pics/de/entertainmentratgeber/v1/E-Ratgeber_Icon-Bild-weiss_80x60.gif" alt="{Title}" width="80" height="60" border="0"/>
                </a>
              </xsl:otherwise>
            </xsl:choose>
          </td>
          <td>
            <a href="{$ItemLink}">
              <xsl:value-of select="Title"/>
            </a>
          </td>
          <td>
            <b>
              <xsl:value-of select="concat(ConvertedCurrentPrice/@currencyID,' ',format-number(ConvertedCurrentPrice, '#.##0,00'))"/>
            </b>
            <xsl:if test="ConvertedBuyItNowPrice!='0'">
              <br/>
              <xsl:value-of select="concat(ConvertedBuyItNowPrice/@currencyID, ' ',format-number(ConvertedBuyItNowPrice, '#.##0,00'))"/>
              <br/>
              <img border="0" title="Sofort-Kaufen" alt="Sofort-Kaufen" src="http://pics.ebaystatic.com/aw/pics/de/bin_15x54.gif"/>
            </xsl:if>
          </td>
        </tr>
      </xsl:for-each>
      	<tr>
      	  <td colspan="2">
      	    <xsl:if test="ebaySearchResults/CurrentPage &gt; 1">
      	      <span style="cursor: pointer; color: blue;" onclick="findEbayItems(null, 'previous')">Zurück</span>
      	    </xsl:if>
      	  </td>
      	  <td colspan="1" align="right">
      	    <xsl:if test="ebaySearchResults/CurrentPage &lt; ebaySearchResults/TotalPages">
      	      <span style="cursor: pointer; color: blue;" onclick="findEbayItems(null, 'next')">Weiter</span>
      	    </xsl:if>
      	  </td>
      	</tr>
    </table>
  </xsl:template>
</xsl:stylesheet>

!!! Listing 4

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <script type="text/javascript" src="static/prototype.js"></script>
    <title>Ebay-Suche per Ajax </title>
    <style type="text/css">
      tr.zeile_gerade  { background: #eeeeee; }
      tr.zeile_ungerade {  background: #ffffff; }
      td { padding: 3px; }
      th { background: #dddddd; }    
    </style>
  </head>
  <body>
    <p>
      <form onsubmit="findEbayItems($('keywordInput').value); return(false);">
        <input type="text" id="keywordInput" size="15">
        <input type="submit" value="Finden">
      </form>
    </p>    
    <div id="ebayItemsContainer">Noch keine Ergebnisse.</div>
  </body>
</html>

!!! Listing 5

function findEbayItems(searchString, pageNo) {
var XSLTProc;
var XMLProc;
  
  var haveXML = false;
  var haveXSLT = false;
  var XMLBuffer;

  function fetchXSLTData() {
    new Ajax.Request
    (
      'styles/ebaySearchResults.xsl',
      {
        onComplete: function(response)
        {
          handleResponse(response, 'XSLTData');
        },
        method: 'get',
        asynchronous: true
      }
    );
  }

  function fetchXMLData() {
    new Ajax.Request
    (
      'feed.php?',
      {
        onComplete: function(response)
        {
          handleResponse(response, 'XMLData');
        },
        method: 'get',
        asynchronous: true,
        parameters: 'page=' + pageNo + '&query='
          + encodeURIComponent(searchString)
      }
    );
  }

!! Listing 6

function handleResponse(response, type)
{
  switch (type)
  {
    case 'XSLTData':
      if (response.status == 200)
      {
        if
        (
          document.implementation
            && document.implementation.createDocument
        )
        {
          XSLTProc = new XSLTProcessor();
          XSLTProc.importStylesheet(response.responseXML);
        }
        else if (window.ActiveXObject)
        {
          XSLTProc = new ActiveXObject('MSXML2.DOMDocument');
          XSLTProc.loadXML(response.responseText);
        }
        haveXSLT = true;
      }
      break;

    case 'XMLData':
      if (response.status == 200)
      {
        if
        (
          document.implementation
            && document.implementation.createDocument
        )
        {
          XMLBuffer = response.responseXML;
        }
        else if (window.ActiveXObject)
        {
          XMLProc = new ActiveXObject('MSXML2.DOMDocument');
          XMLProc.loadXML(response.responseText);
        }
        haveXML = true;
      }
      break;
  }

  if (haveXML && haveXSLT)
  {
    if 
    (
      document.implementation
        && document.implementation.createDocument
    )
    {
      $('ebayItemsContainer').update
      (
        getOuterHTML
        (
          XSLTProc.transformToFragment(XMLBuffer, document)
        )
      );
    }
    else if (window.ActiveXObject)
    {
      $('ebayItemsContainer').update
      (
        XMLProc.transformNode(XSLTProc)
      );
    }  
  }
}


!!! Listing 7

var currentSearchString;
var currentPageNo;

if (!pageNo) pageNo = 1;
else if (pageNo == 'previous') pageNo = currentPageNo - 1;
else if (pageNo == 'next') pageNo = currentPageNo + 1;
currentPageNo = pageNo;

if (!searchString) searchString = currentSearchString;
currentSearchString = searchString;

fetchXSLTData();
fetchXMLData();