more efficient sorting
This commit is contained in:
Roland Gruber
parent
2c66f35de2
commit
8d2bb051a0
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@ -76,6 +76,9 @@ class lamList {
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/** LDAP entries */
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protected $entries;
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/** sort mapping for entries array(original index => sorted index) */
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protected $sortMapping;
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/** list of filters (attribute name => filter input) */
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protected $filters = array();
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@ -160,7 +163,7 @@ class lamList {
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}
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// sort rows by sort column
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if (isset($this->entries)) {
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$this->listSort($this->entries);
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$this->listCreateSortMapping($this->entries);
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}
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// insert HTML fragment from listDoPost
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echo $postFragment;
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@ -231,36 +234,43 @@ class lamList {
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}
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/**
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* Sorts an account list by a given attribute
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* Determines the sort mapping and stores it in $this->sortMapping.
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* The sort mapping is used to display the right rows when the account table is created.
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*
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* @param array $info the account list
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*/
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protected function listSort(&$info) {
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protected function listCreateSortMapping(&$info) {
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if (!is_array($this->attrArray)) return;
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if (!is_string($this->sortColumn)) return;
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// sort and return account list
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usort($info, array($this, "cmp_array"));
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}
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/**
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* Compare function used for usort-method
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*
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* Rows are sorted with the first attribute entry of the sort column.
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* If objects have attributes with multiple values only the first is used for sorting.
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*
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* @param array $a first row which is compared
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* @param array $b second row which is compared
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* @return integer 0 if both are equal, 1 if $a is greater, -1 if $b is greater
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*/
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protected function cmp_array(&$a, &$b) {
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if ($this->sortColumn != "dn") {
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// sort by first attribute with name $sort
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return @strnatcasecmp($a[$this->sortColumn][0], $b[$this->sortColumn][0]) * $this->sortDirection;
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$toSort = array();
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$col = $this->sortColumn;
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$size = sizeof($info);
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if ($this->sortColumn != 'dn') {
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for ($i = 0; $i < $size; $i++) {
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// sort by first attribute with name $sort
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$toSort[] = &$info[$i][$col][0];
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}
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}
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else {
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return strnatcasecmp($a[$this->sortColumn], $b[$this->sortColumn]) * $this->sortDirection;
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for ($i = 0; $i < $size; $i++) {
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$toSort[] = &$info[$i][$col];
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}
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}
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natcasesort($toSort);
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$sortResult = array();
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if ($this->sortDirection == 1) {
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foreach ($toSort as $orig => $val) {
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$sortResult[] = $orig;
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}
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}
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else {
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$counter = sizeof($toSort);
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foreach ($toSort as $orig => $val) {
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$counter--;
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$sortResult[$counter] = $orig;
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}
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}
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$this->sortMapping = &$sortResult;
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}
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/**
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@ -417,9 +427,19 @@ class lamList {
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$table_begin = ($this->page - 1) * $this->maxPageEntries;
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if (($this->page * $this->maxPageEntries) > sizeof($info)) $table_end = sizeof($info);
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else $table_end = ($this->page * $this->maxPageEntries);
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// get sort mapping
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$sortMapping = &$this->sortMapping;
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if (empty($sortMapping)) {
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$sortMapping = array();
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$infoSize = sizeof($info);
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for ($i = 0; $i < $infoSize; $i++) {
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$sortMapping[$i] = $i;
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}
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}
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// print account list
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for ($i = $table_begin; $i < $table_end; $i++) {
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$rowID = base64_encode($info[$i]['dn']);
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$index = $sortMapping[$i];
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$rowID = base64_encode($info[$index]['dn']);
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if ((($i - $table_begin) % 2) == 1) {
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$classes = ' ' . $this->type . '-bright';
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}
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@ -428,14 +448,14 @@ class lamList {
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}
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echo("<tr class=\"$classes\"" .
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" onClick=\"list_click('" . $rowID . "')\"\n" .
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" onDblClick=\"top.location.href='../account/edit.php?type=" . $this->type . "&DN=" . rawurlencode($info[$i]['dn']) . "'\">\n");
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" onDblClick=\"top.location.href='../account/edit.php?type=" . $this->type . "&DN=" . rawurlencode($info[$index]['dn']) . "'\">\n");
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echo " <td align=\"center\"><input class=\"accountBoxUnchecked\" onClick=\"list_click('" . $rowID . "')\"" .
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" type=\"checkbox\" name=\"" . $rowID . "\"></td>\n";
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$this->listPrintToolLinks($info[$i], $rowID);
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$this->listPrintToolLinks($info[$index], $rowID);
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for ($k = 0; $k < sizeof($this->attrArray); $k++) {
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echo ("<td>");
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$attrName = strtolower($this->attrArray[$k]);
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$this->listPrintTableCellContent($info[$i], $attrName);
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$this->listPrintTableCellContent($info[$index], $attrName);
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echo ("</td>\n");
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}
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echo("</tr>\n");
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@ -590,14 +610,15 @@ class lamList {
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// create for all accounts
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elseif ($option == 'ALL') {
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$list = array();
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for ($i = 0; $i < sizeof($this->entries); $i++) {
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$entriesCount = sizeof($this->entries);
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for ($i = 0; $i < $entriesCount; $i++) {
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$_SESSION["accountPDF-$i"] = new accountContainer($this->type, "accountPDF-$i");
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$_SESSION["accountPDF-$i"]->load_account($this->entries[$i]['dn']);
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$list[$i] = $_SESSION["accountPDF-$i"];
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}
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if (sizeof($list) > 0) {
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$filename = createModulePDF($list,$pdfStruct);
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for ($i = 0; $i < sizeof($this->entries); $i++) {
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for ($i = 0; $i < $entriesCount; $i++) {
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// clean session
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unset($_SESSION["accountPDF-$i"]);
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}
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