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<?php
// File indices.inc.php / ibWebAdmin
// Purpose functions working with indices, included from accessories.php
// Author Lutz Brueckner <irie@gmx.de>
// Copyright (c) 2000, 2001 by Lutz Brueckner,
// published under the terms of the GNU General Public Licence v.2,
// see file LICENCE for details
// Created <01/10/10 20:52:58 lb>
//
// $Id: indices.inc.php,v 1.12 2004/04/22 19:05:38 lbrueckner Exp $
//
// create an index from the values in the index form
//
function create_index() {
global $HTTP_POST_VARS, $dbhandle, $indices;
global $ib_error, $lsql;
$lsql = 'CREATE ';
if (isset($HTTP_POST_VARS['def_index_uniq'])) {
$lsql .= 'UNIQUE ';
}
$lsql .= $HTTP_POST_VARS['def_index_dir'].' INDEX '.$HTTP_POST_VARS['def_index_name'].' ';
$lsql .= 'ON '.$HTTP_POST_VARS['def_index_table'].' ('.$HTTP_POST_VARS['def_index_segs'].')';
if (DEBUG) add_debug('lsql', __FILE__, __LINE__);
if (!@ibase_query($dbhandle, $lsql)) {
$ib_error = ibase_errmsg();
}
if ((!isset($HTTP_POST_VARS['def_index_activ'])
|| $HTTP_POST_VARS['def_index_activ'] == FALSE)
&& (empty($ib_error))) {
alter_index($HTTP_POST_VARS['def_index_name'], 'INACTIVE');
}
if (empty($ib_error)) {
$iname = strtoupper($HTTP_POST_VARS['def_index_name']);
$indices[$iname]['table'] = $HTTP_POST_VARS['def_index_table'];
$indices[$iname]['dir'] = $HTTP_POST_VARS['def_index_dir'];
$indices[$iname]['uniq'] = (isset($HTTP_POST_VARS['def_index_uniq'])) ? TRUE : FALSE;
$indices[$iname]['active']= (isset($HTTP_POST_VARS['def_index_activ'])) ? TRUE : FALSE;
$segs = explode(',', strtoupper($HTTP_POST_VARS['def_index_segs']));
$indices[$iname]['seg'] = array();
foreach ($segs as $seg) {
$indices[$iname]['seg'][] = $seg;
}
return TRUE;
}
else {
return FALSE;
}
}
//
// try to modify the index $iname by recreate the index with the new settings
//
function modify_index($iname) {
global $HTTP_POST_VARS, $dbhandle, $indices;
global $ib_error, $lsql;
// alter the active/inactive status if the change was selected
if (isset($HTTP_POST_VARS['def_index_activ']) && $indices[$iname]['active'] == FALSE) {
if (alter_index($iname, 'ACTIVE')) {
$indices[$iname]['active'] = TRUE;
}
else {
return FALSE;
}
}
elseif (!isset($HTTP_POST_VARS['def_index_activ']) && $indices[$iname]['active'] == TRUE) {
if (alter_index($iname, 'INACTIVE')) {
$indices[$iname]['active'] = FALSE;
}
else {
return FALSE;
}
}
// check if the index properties are modified
$uniq_flag = (isset($HTTP_POST_VARS['def_index_uniq'])) ? TRUE : FALSE;
$acti_flag = (isset($HTTP_POST_VARS['def_index_activ'])) ? TRUE : FALSE;
if ($indices[$iname]['table'] != $HTTP_POST_VARS['def_index_table']
|| $iname != $HTTP_POST_VARS['def_index_name']
|| $indices[$iname]['dir'] != $HTTP_POST_VARS['def_index_dir']
|| $indices[$iname]['uniq'] != $uniq_flag
|| $indices[$iname]['active']!= $acti_flag
|| implode(',', $indices[$iname]['seg']) != strtoupper($HTTP_POST_VARS['def_index_segs'])) {
// drop the old index
$lsql = 'DROP INDEX '.$iname;
if (DEBUG) add_debug('lsql', __FILE__, __LINE__);
if (!@ibase_query($dbhandle, $lsql)) {
$ib_error = ibase_errmsg();
return FALSE;
}
// try to recreate with the new properties
if (create_index()) {
return TRUE;
}
// try to recreate the old one
else {
$lsql = 'CREATE ';
if (isset($indices[$iname]['uniq'])) {
$lsql .= 'UNIQUE ';
}
$lsql .= $indices[$iname]['dir']." INDEX $iname ON "
.$indices[$iname]['table'].' ('.implode(',', $indices[$iname]['seg']).')';
if (DEBUG) add_debug('lsql', __FILE__, __LINE__);
if (!@ibase_query($trans, $lsql)) {
ibase_rollback($trans);
$ib_error = ibase_errmsg();
}
return FALSE;
}
}
return TRUE;
}
//
// set the index $iname active or inactive
//
function alter_index($iname, $state) {
global $dbhandle, $ib_error, $lsql;
$lsql = "ALTER INDEX $iname $state";
if (DEBUG) add_debug('lsql', __FILE__, __LINE__);
if (!@ibase_query($dbhandle, $lsql)) {
$ib_error = ibase_errmsg();
return FALSE;
}
return TRUE;
}
//
// drop the index $name off the database
//
function drop_index($name) {
global $indices, $dbhandle;
global $ib_error, $lsql;
$lsql = 'DROP INDEX '.$name;
if (DEBUG) add_debug('lsql', __FILE__, __LINE__);
if (!@ibase_query($dbhandle, $lsql)) {
$ib_error = ibase_errmsg();
return TRUE;
}
else {
unset($indices[$name]);
return TRUE;
}
}
//
// return an array with the properties of the defined indeces
//
function get_indices($order, $dir) {
global $dbhandle;
$order_field = ($order == 'name') ? 'I.RDB$INDEX_NAME' : 'I.RDB$RELATION_NAME';
$sql = 'SELECT I.RDB$INDEX_NAME AS INAME, '
.'I.RDB$RELATION_NAME AS RNAME, '
.'I.RDB$UNIQUE_FLAG AS UFLAG, '
.'I.RDB$INDEX_INACTIVE AS IFLAG, '
.'I.RDB$INDEX_TYPE AS ITYPE, '
.'S.RDB$FIELD_NAME AS FNAME, '
.'S.RDB$FIELD_POSITION AS POS '
.'FROM RDB$INDICES I '
.'JOIN RDB$INDEX_SEGMENTS S '
.'ON S.RDB$INDEX_NAME=I.RDB$INDEX_NAME '
.'WHERE (I.RDB$SYSTEM_FLAG IS NULL OR I.RDB$SYSTEM_FLAG=0)'
.'AND I.RDB$FOREIGN_KEY IS NULL '
."AND I.RDB\$INDEX_NAME NOT STARTING WITH 'RDB\$' "
.'ORDER BY '.$order_field.' '.$dir;
$trans = ibase_trans(TRANS_READ, $dbhandle);
$res = ibase_query($trans, $sql) or ib_error();
$indices = array();
while ($obj = ibase_fetch_object($res)) {
if (!isset($indices[$obj->INAME])) {
$iname = trim($obj->INAME);
$indices[$iname]['table'] = trim($obj->RNAME);
$indices[$iname]['dir'] = (isset($obj->ITYPE) && $obj->ITYPE == 1) ? 'DESC' : 'ASC';
$indices[$iname]['uniq'] = (isset($obj->UFLAG)) ? TRUE : FALSE;
$indices[$iname]['active']= (isset($obj->IFLAG) && $obj->IFLAG == 1) ? FALSE : TRUE;
$indices[$iname]['pos'] = $obj->POS;
}
$indices[$iname]['seg'][$obj->POS] = trim($obj->FNAME);
}
ibase_commit($trans);
return $indices;
}
//
// output a html-table with a form to define/modify an index
//
// Variables: $indexname name of the index to modify
// $title headline-string for the table
function index_definition($indexname, $title) {
global $indices, $HTTP_POST_VARS, $acc_strings;
if ($indexname != NULL && !isset($HTTP_POST_VARS['acc_modind_doit'])) {
$name = $indexname;
$table = $indices[$indexname]['table'];
$dir = $indices[$indexname]['dir'];
$uniq = $indices[$indexname]['uniq'];
$active = $indices[$indexname]['active'];
$segs = implode(',', $indices[$indexname]['seg']);
}
else {
$name = (isset($HTTP_POST_VARS['def_index_name'])) ? $HTTP_POST_VARS['def_index_name'] : '';
$table = (isset($HTTP_POST_VARS['def_index_table'])) ? $HTTP_POST_VARS['def_index_table'] : '';
$dir = (isset($HTTP_POST_VARS['def_index_dir'])) ? $HTTP_POST_VARS['def_index_dir'] : 'ASC';
$uniq = (isset($HTTP_POST_VARS['def_index_uniq'])) ? TRUE : FALSE;
$active = (isset($HTTP_POST_VARS['def_index_activ'])) ? TRUE : FALSE;
$segs = (isset($HTTP_POST_VARS['def_index_segs'])) ? $HTTP_POST_VARS['def_index_segs'] : '';
}
?>
<table border cellpadding="3" cellspacing="0">
<tr>
<th colspan="6" align="left"><?php echo $title; ?></th>
</tr>
<tr>
<td valign="top"><b><?php echo $acc_strings['Name']; ?></b><br>
<input type="text" size="20" maxlength="31" name="def_index_name" value="<?php echo $name; ?>">
</td>
<td valign="top"><b><?php echo $acc_strings['Table']; ?></b><br>
<select name="def_index_table">
<?php build_table_options($table, array('noviews', 'owner')); ?>
</select>
</td>
<td align="center" valign="top"><b><?php echo $acc_strings['Active']; ?></b><br>
<input type="checkbox" name="def_index_activ" <?php if ($active) echo 'checked'; ?>>
</td>
<td align="center" valign="top"><b><?php echo $acc_strings['Unique']; ?></b><br>
<input type="checkbox" name="def_index_uniq" <?php if ($uniq) echo 'checked'; ?>>
</td>
<td align="center" valign="top"><b><?php echo $acc_strings['Sort']; ?></b><br>
<select name="def_index_dir">
<option<?php if ($dir == 'ASC') echo ' selected'; ?>> ASC
<option<?php if ($dir == 'DESC') echo ' selected'; ?>> DESC
</select>
</td>
<td valign="top"><b><?php echo $acc_strings['ColExpl']; ?></b><br>
<input type="text" size="30" maxlength="128" name="def_index_segs" value="<?php echo $segs; ?>">
</td>
</tr>
</table>
<?php
}
//
// return the html displaying the index details in a table
//
function &get_index_table(&$indices, $order, $dir) {
global $HTTP_SERVER_VARS, $acc_strings;
$name_url = url_session($HTTP_SERVER_VARS['PHP_SELF'].'?idxorder=1&order=name');
$table_url = url_session($HTTP_SERVER_VARS['PHP_SELF'].'?idxorder=1&order=table');
if ($order == 'name') {
$name_title = ($dir == 'ASC') ? '* '.$acc_strings['Name'] : $acc_strings['Name'].' *';
$table_title = $acc_strings['Table'];
}
else {
$name_title = $acc_strings['Name'];
$table_title = ($dir == 'ASC') ? '* '.$acc_strings['Table'] : $acc_strings['Table'].' *';
}
$html = "<table cellpadding=\"0\" cellspacing=\"0\" border>\n"
." <tr align=\"left\">\n"
.' <th class="detail"><a href="'.$name_url.'">'.$name_title."</a></th>\n"
.' <th class="detail">'.$acc_strings['Active']."</th>\n"
.' <th class="detail">'.$acc_strings['Unique']."</th>\n"
.' <th class="detail">'.$acc_strings['Sort']."</th>\n"
.' <th class="detail"><a href="'.$table_url.'">'.$table_title."</a></th>\n"
.' <th class="detail">'.$acc_strings['Columns']."</th>\n"
." </tr>\n";
foreach($indices as $iname => $index) {
$uniq_flag = ($index['uniq'] == TRUE) ? $acc_strings['Yes'] : $acc_strings['No'];
$active_flag = ($index['active'] == TRUE) ? $acc_strings['Yes'] : $acc_strings['No'];
$segs = implode(', ', $index['seg']);
$html .= " <tr>\n"
.' <td class="detail">'.$iname."</td>\n"
.' <td align="center" class="detail">'.$active_flag."</td>\n"
.' <td align="center" class="detail">'.$uniq_flag."</td>\n"
.' <td class="detail">'.$index['dir']."</td>\n"
.' <td class="detail">'.$index['table']."</td>\n"
.' <td class="detail">'.$segs."</td>\n"
." </tr>\n";
}
$html .= "</table>\n";
return $html;
}
?>
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