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- <?php
- /* $Id: tbl_indexes.lib.php,v 2.5 2006/01/17 17:02:31 cybot_tm Exp $ */
- // vim: expandtab sw=4 ts=4 sts=4:
- /**
- * function library for handling table indexes
- */
-
- /**
- * Return a list of all index types
- *
- * @access public
- * @return array Index types
- * @author Garvin Hicking (pma@supergarv.de)
- */
- function PMA_get_indextypes() {
- return array(
- 'PRIMARY',
- 'INDEX',
- 'UNIQUE',
- 'FULLTEXT'
- );
- }
-
- /**
- * Function to get all index information from a certain table
- *
- * @param string Table name
- * @param string Error URL
- *
- * @access public
- * @return array Index keys
- */
- function PMA_get_indexes($tbl_name, $err_url_0 = '') {
- $tbl_local_query = 'SHOW KEYS FROM ' . PMA_backquote($tbl_name);
- $tbl_result = PMA_DBI_query($tbl_local_query) or PMA_mysqlDie('', $tbl_local_query, '', $err_url_0);
- $tbl_ret_keys = array();
- while ($tbl_row = PMA_DBI_fetch_assoc($tbl_result)) {
- $tbl_ret_keys[] = $tbl_row;
- }
- PMA_DBI_free_result($tbl_result);
-
- return $tbl_ret_keys;
- }
-
- /**
- * Function to check over array of indexes and look for common problems
- *
- * @param array Array of indexes
- * @param boolean Whether to output HTML in table layout
- *
- * @access public
- * @return string Output HTML
- * @author Garvin Hicking (pma@supergarv.de)
- */
- function PMA_check_indexes($idx_collection, $table = true) {
- $index_types = PMA_get_indextypes();
- $output = '';
-
- if ( ! is_array($idx_collection) || empty($idx_collection['ALL'])) {
- return $output;
- }
-
- foreach ($idx_collection['ALL'] AS $w_keyname => $w_count) {
- if (isset($idx_collection['PRIMARY'][$w_keyname]) && (isset($idx_collection['INDEX'][$w_keyname]) || isset($idx_collection['UNIQUE'][$w_keyname]))) {
- $output .= PMA_index_warning(sprintf($GLOBALS['strIndexWarningPrimary'], htmlspecialchars($w_keyname)), $table);
- } elseif (isset($idx_collection['UNIQUE'][$w_keyname]) && isset($idx_collection['INDEX'][$w_keyname])) {
- $output .= PMA_index_warning(sprintf($GLOBALS['strIndexWarningUnique'], htmlspecialchars($w_keyname)), $table);
- }
-
- foreach ($index_types AS $index_type) {
- if (isset($idx_collection[$index_type][$w_keyname]) && $idx_collection[$index_type][$w_keyname] > 1) {
- $output .= PMA_index_warning(sprintf($GLOBALS['strIndexWarningMultiple'], $index_type, htmlspecialchars($w_keyname)), $table);
- }
- }
- }
-
- return $output;
- }
-
- /**
- * Loop array of returned index keys and extract key information to
- * seperate arrays. Those arrays are passed by reference.
- *
- * @param array Referenced Array of indexes
- * @param array Referenced return array
- * @param array Referenced return array
- * @param array Referenced return array
- *
- * @access public
- * @return boolean void
- * @author Garvin Hicking (pma@supergarv.de)
- */
- function PMA_extract_indexes(&$ret_keys, &$indexes, &$indexes_info, &$indexes_data) {
- if (!is_array($ret_keys)) {
- return false;
- }
-
- $prev_index = '';
- foreach ($ret_keys as $row) {
- if ($row['Key_name'] != $prev_index ){
- $indexes[] = $row['Key_name'];
- $prev_index = $row['Key_name'];
- }
-
- $indexes_info[$row['Key_name']]['Sequences'][] = $row['Seq_in_index'];
- $indexes_info[$row['Key_name']]['Non_unique'] = $row['Non_unique'];
-
- if (isset($row['Cardinality'])) {
- $indexes_info[$row['Key_name']]['Cardinality'] = $row['Cardinality'];
- }
-
- // I don't know what does following column mean....
- // $indexes_info[$row['Key_name']]['Packed'] = $row['Packed'];
- $indexes_info[$row['Key_name']]['Comment'] = (isset($row['Comment']))
- ? $row['Comment']
- : '';
- $indexes_info[$row['Key_name']]['Index_type'] = (isset($row['Index_type']))
- ? $row['Index_type']
- : '';
-
- $indexes_data[$row['Key_name']][$row['Seq_in_index']]['Column_name'] = $row['Column_name'];
- if (isset($row['Sub_part'])) {
- $indexes_data[$row['Key_name']][$row['Seq_in_index']]['Sub_part'] = $row['Sub_part'];
- }
- } // end while
-
- return true;
- }
-
- /**
- * Show index data and prepare returned collection array for index
- * key checks.
- *
- * @param string $table The tablename
- * @param array $indexes Referenced Array of indexes
- * @param array $indexes_info Referenced info array
- * @param array $indexes_data Referenced data array
- * @param boolean $display_html Output HTML code, or just return collection array?
- * @param boolean $print_mode
- * @access public
- * @return array Index collection array
- * @author Garvin Hicking (pma@supergarv.de)
- */
- function PMA_show_indexes($table, &$indexes, &$indexes_info, &$indexes_data, $display_html = true, $print_mode = false) {
- $idx_collection = array();
- $odd_row = true;
- foreach ($indexes as $index_name) {
- if ($display_html) {
- $row_span = ' rowspan="' . count($indexes_info[$index_name]['Sequences']) . '" ';
-
- echo ' <tr class="' . ( $odd_row ? 'odd' : 'even' ) . '">' . "\n";
- echo ' <th ' . $row_span . '>' . "\n"
- . ' ' . htmlspecialchars($index_name) . "\n"
- . ' </th>' . "\n";
- }
-
- if ((PMA_MYSQL_INT_VERSION < 40002 && $indexes_info[$index_name]['Comment'] == 'FULLTEXT')
- || (PMA_MYSQL_INT_VERSION >= 40002 && $indexes_info[$index_name]['Index_type'] == 'FULLTEXT')) {
- $index_type = 'FULLTEXT';
- } elseif ($index_name == 'PRIMARY') {
- $index_type = 'PRIMARY';
- } elseif ($indexes_info[$index_name]['Non_unique'] == '0') {
- $index_type = 'UNIQUE';
- } else {
- $index_type = 'INDEX';
- }
-
- if ($display_html) {
- echo ' <td ' . $row_span . '>' . "\n"
- . ' ' . $index_type . '</td>' . "\n";
-
- echo ' <td ' . $row_span . ' align="right">' . "\n"
- . ' ' . (isset($indexes_info[$index_name]['Cardinality']) ? $indexes_info[$index_name]['Cardinality'] : $GLOBALS['strNone']) . ' ' . "\n"
- . ' </td>' . "\n";
-
- if (!$print_mode) {
- echo ' <td ' . $row_span . '>' . "\n"
- . ' <a href="tbl_indexes.php?' . $GLOBALS['url_query'] . '&index=' . urlencode($index_name) . '">' . $GLOBALS['edit_link_text'] . '</a>' . "\n"
- . ' </td>' . "\n";
-
- if ($index_name == 'PRIMARY') {
- $local_query = urlencode('ALTER TABLE ' . PMA_backquote($table) . ' DROP PRIMARY KEY');
- $js_msg = 'ALTER TABLE ' . PMA_jsFormat($table) . ' DROP PRIMARY KEY';
- $zero_rows = urlencode($GLOBALS['strPrimaryKeyHasBeenDropped']);
- } else {
- $local_query = urlencode('ALTER TABLE ' . PMA_backquote($table) . ' DROP INDEX ' . PMA_backquote($index_name));
- $js_msg = 'ALTER TABLE ' . PMA_jsFormat($table) . ' DROP INDEX ' . PMA_jsFormat($index_name);
- $zero_rows = urlencode(sprintf($GLOBALS['strIndexHasBeenDropped'], htmlspecialchars($index_name)));
- }
-
- echo ' <td ' . $row_span . '>' . "\n"
- . ' <a href="sql.php?' . $GLOBALS['url_query'] . '&sql_query=' . $local_query . '&zero_rows=' . $zero_rows . '" onclick="return confirmLink(this, \'' . $js_msg . '\')">' . $GLOBALS['drop_link_text'] . '</a>' . "\n"
- . ' </td>' . "\n";
- }
- }
-
- foreach ($indexes_info[$index_name]['Sequences'] AS $row_no => $seq_index) {
- $col_name = $indexes_data[$index_name][$seq_index]['Column_name'];
- if ($row_no == 0) {
- if (isset($idx_collection[$index_type][$col_name])) {
- $idx_collection[$index_type][$col_name]++;
- } else {
- $idx_collection[$index_type][$col_name] = 1;
- }
-
- if (isset($idx_collection['ALL'][$col_name])) {
- $idx_collection['ALL'][$col_name]++;
- } else {
- $idx_collection['ALL'][$col_name] = 1;
- }
- }
-
- if ($display_html) {
- if ($row_no > 0) {
- echo ' <tr class="' . ( $odd_row ? 'odd' : 'even' ) . '">' . "\n";
- }
-
- if ( isset($indexes_data[$index_name][$seq_index]['Sub_part'])
- && strlen($indexes_data[$index_name][$seq_index]['Sub_part']) ) {
- echo ' <td>' . $col_name . '</td>' . "\n";
- echo ' <td align="right">' . "\n"
- . ' ' . $indexes_data[$index_name][$seq_index]['Sub_part'] . "\n"
- . ' </td>' . "\n";
- echo ' </tr>' . "\n";
- } else {
- echo ' <td colspan="2">' . "\n"
- . ' ' . htmlspecialchars($col_name) . "\n"
- . ' </td>' . "\n";
- echo ' </tr>' . "\n";
- }
- }
- } // end foreach $indexes_info[$index_name]['Sequences']
-
- $odd_row = ! $odd_row;
- } // end while
-
- return $idx_collection;
- }
-
- /**
- * Function to emit a index warning
- *
- * @author Garvin Hicking (pma@supergarv.de)
- * @access public
- * @param string $string Message string
- * @param boolean $table Whether to output HTML in table layout
- * @return string Output HTML
- */
- function PMA_index_warning($string, $table = true) {
- $output = '<div class="warning">' . $string . '</div>';
-
- if ( $table ) {
- $output = '<tr><td colspan=7">' . $output . '</td></tr>';
- }
-
- return $output . "\n";
- }
- ?>
-