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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* Functions for the table relation page
*
* @package PhpMyAdmin
*/
/**
* Generate dropdown choices
*
* @param string $dropdown_question Message to display
* @param string $select_name Name of the <select> field
* @param array $choices Choices for dropdown
* @param string $selected_value Selected value
*
* @return string The html code for existing value (for selected)
*
* @access public
*/
function PMA_generateDropdown(
$dropdown_question, $select_name, $choices, $selected_value
) {
$html_output = htmlspecialchars($dropdown_question) . ' '
. '<select name="' . htmlspecialchars($select_name) . '">' . "\n";
foreach ($choices as $one_value => $one_label) {
$html_output .= '<option value="' . htmlspecialchars($one_value) . '"';
if ($selected_value == $one_value) {
$html_output .= ' selected="selected" ';
}
$html_output .= '>' . htmlspecialchars($one_label) . '</option>' . "\n";
}
$html_output .= '</select>' . "\n";
return $html_output;
}
/**
* Split a string on backquote pairs
*
* @param string $text original string
*
* @return array containing the elements (and their surrounding backquotes)
*
* @access public
*/
function PMA_backquoteSplit($text)
{
$elements = array();
$final_pos = strlen($text) - 1;
$pos = 0;
while ($pos <= $final_pos) {
$first_backquote = strpos($text, '`', $pos);
$second_backquote = strpos($text, '`', $first_backquote + 1);
// after the second one, there might be another one which means
// this is an escaped backquote
if ($second_backquote < $final_pos && '`' == $text[$second_backquote + 1]) {
$second_backquote = strpos($text, '`', $second_backquote + 2);
}
if (false === $first_backquote || false === $second_backquote) {
break;
}
$elements[] = substr(
$text, $first_backquote, $second_backquote - $first_backquote + 1
);
$pos = $second_backquote + 1;
}
return($elements);
}
/**
* Returns the DROP query for a foreign key constraint
*
* @param string $table table of the foreign key
* @param string $fk foreign key name
*
* @return string DROP query for the foreign key constraint
*/
function PMA_getSQLToDropForeignKey($table, $fk)
{
return 'ALTER TABLE ' . PMA_Util::backquote($table)
. ' DROP FOREIGN KEY ' . PMA_Util::backquote($fk) . ';';
}
/**
* Returns the SQL query for foreign key constraint creation
*
* @param string $table table name
* @param string $field field name
* @param string $foreignDb foreign database name
* @param string $foreignTable foreign table name
* @param string $foreignField foreign field name
* @param string $name name of the constraint
* @param string $onDelete on delete action
* @param string $onUpdate on update action
*
* @return string SQL query for foreign key constraint creation
*/
function PMA_getSQLToCreateForeignKey($table, $field, $foreignDb, $foreignTable,
$foreignField, $name = null, $onDelete = null, $onUpdate = null
) {
$sql_query = 'ALTER TABLE ' . PMA_Util::backquote($table) . ' ADD ';
// if user entered a constraint name
if (! empty($name)) {
$sql_query .= ' CONSTRAINT ' . PMA_Util::backquote($name);
}
$sql_query .= ' FOREIGN KEY (' . PMA_Util::backquote($field) . ')'
. ' REFERENCES ' . PMA_Util::backquote($foreignDb)
. '.' . PMA_Util::backquote($foreignTable)
. '(' . PMA_Util::backquote($foreignField) . ')';
if (! empty($onDelete)) {
$sql_query .= ' ON DELETE ' . $onDelete;
}
if (! empty($onUpdate)) {
$sql_query .= ' ON UPDATE ' . $onUpdate;
}
$sql_query .= ';';
return $sql_query;
}
/**
* Creates and populates dropdowns to select foreign db/table/column
*
* @param string $name name of the dropdowns
* @param array $values dropdown values
* @param string|boolean $foreign value of the item to be selected
* @param string $title title to show on hovering the dropdown
*
* @return string HTML for the dropdown
*/
function PMA_generateRelationalDropdown(
$name, $values = array(), $foreign = false, $title = ''
) {
$html_output = '<select name="' . $name . '" title="' . $title . '">';
$html_output .= '<option value=""></option>';
$seen_key = false;
foreach ($values as $value) {
$html_output .= '<option value="' . htmlspecialchars($value) . '"';
if ($foreign && $value == $foreign) {
$html_output .= ' selected="selected"';
$seen_key = true;
}
$html_output .= '>' . htmlspecialchars($value) . '</option>';
}
if ($foreign && ! $seen_key) {
$html_output .= '<option value="' . htmlspecialchars($foreign) . '"'
. ' selected="selected">' . htmlspecialchars($foreign) . '</option>';
}
$html_output .= '</select>';
return $html_output;
}
/**
* Function to get html for the common form
*
* @param string $db current database
* @param string $table current table
* @param array $columns columns
* @param array $cfgRelation configuration relation
* @param string $tbl_storage_engine table storage engine
* @param array $existrel db, table, column
* @param array $existrel_foreign db, table, column
* @param array $options_array options array
*
* @return string
*/
function PMA_getHtmlForCommonForm($db, $table, $columns, $cfgRelation,
$tbl_storage_engine, $existrel, $existrel_foreign, $options_array
) {
$html_output = PMA_getHtmlForCommonFormHeader($db, $table);
if (count($columns) > 0) {
$html_output .= PMA_getHtmlForCommonFormRows(
$columns, $cfgRelation, $tbl_storage_engine,
$existrel, $existrel_foreign, $options_array, $db, $table
);
} // end if (we have columns in this table)
$html_output .= PMA_getHtmlForCommonFormFooter();
return $html_output;
}
/**
* Function to get html for the common form rows
*
* @param array $columns columns
* @param array $cfgRelation configuration relation
* @param string $tbl_storage_engine table storage engine
* @param array $existrel existed relations
* @param array $existrel_foreign existed relations for foreign keys
* @param array $options_array options array
* @param string $db current database
* @param string $table current table
*
* @return string
*/
function PMA_getHtmlForCommonFormRows($columns, $cfgRelation, $tbl_storage_engine,
$existrel, $existrel_foreign, $options_array, $db, $table
) {
$save_row = array();
foreach ($columns as $row) {
$save_row[] = $row;
}
$saved_row_cnt = count($save_row);
$html_output = '<fieldset>'
. '<legend>' . __('Relations') . '</legend>'
. '<table id="relationalTable">';
$html_output .= PMA_getHtmlForCommonFormTableHeaders(
$cfgRelation, $tbl_storage_engine
);
$odd_row = true;
for ($i = 0; $i < $saved_row_cnt; $i++) {
$html_output .= PMA_getHtmlForRow(
$save_row, $i, $odd_row, $cfgRelation, $existrel, $db,
$tbl_storage_engine, $existrel_foreign, $options_array
);
$odd_row = ! $odd_row;
} // end for
$html_output .= '</table>' . "\n"
. '</fieldset>' . "\n";
if ($cfgRelation['displaywork']) {
$html_output .= PMA_getHtmlForDisplayFieldInfos($db, $table, $save_row);
}
return $html_output;
}
/**
* Function to get html for an entire row in common form
*
* @param array $save_row save row
* @param int $i counter
* @param bool $odd_row whether odd row or not
* @param array $cfgRelation configuration relation
* @param array $existrel db, table, column
* @param string $db current db
* @param string $tbl_storage_engine table storage engine
* @param array $existrel_foreign db, table, column
* @param array $options_array options array
*
* @return string
*/
function PMA_getHtmlForRow($save_row, $i, $odd_row, $cfgRelation, $existrel, $db,
$tbl_storage_engine, $existrel_foreign, $options_array
) {
$myfield = $save_row[$i]['Field'];
// Use an md5 as array index to avoid having special characters
// in the name attribute (see bug #1746964 )
$myfield_md5 = md5($myfield);
$myfield_html = htmlspecialchars($myfield);
$html_output = '<tr class="' . ($odd_row ? 'odd' : 'even') . '">'
. '<td class="center">'
. '<strong>' . $myfield_html . '</strong>'
. '<input type="hidden" name="fields_name[' . $myfield_md5 . ']"'
. ' value="' . $myfield_html . '"/>'
. '</td>';
if ($cfgRelation['relwork']) {
$html_output .= '<td>';
$foreign_db = false;
$foreign_table = false;
$foreign_column = false;
// database dropdown
if (isset($existrel[$myfield])) {
$foreign_db = $existrel[$myfield]['foreign_db'];
} else {
$foreign_db = $db;
}
$html_output .= PMA_generateRelationalDropdown(
'destination_db[' . $myfield_md5 . ']',
$GLOBALS['pma']->databases,
$foreign_db,
__('Database')
);
// end of database dropdown
// table dropdown
$tables = array();
if ($foreign_db) {
if (isset($existrel[$myfield])) {
$foreign_table = $existrel[$myfield]['foreign_table'];
}
$tables_rs = $GLOBALS['dbi']->query(
'SHOW TABLES FROM ' . PMA_Util::backquote($foreign_db),
null,
PMA_DatabaseInterface::QUERY_STORE
);
while ($row = $GLOBALS['dbi']->fetchRow($tables_rs)) {
$tables[] = $row[0];
}
}
$html_output .= PMA_generateRelationalDropdown(
'destination_table[' . $myfield_md5 . ']',
$tables,
$foreign_table,
__('Table')
);
// end of table dropdown
// column dropdown
$columns = array();
if ($foreign_db && $foreign_table) {
if (isset($existrel[$myfield])) {
$foreign_column = $existrel[$myfield]['foreign_field'];
}
$table_obj = new PMA_Table($foreign_table, $foreign_db);
$columns = $table_obj->getUniqueColumns(false, false);
}
$html_output .= PMA_generateRelationalDropdown(
'destination_column[' . $myfield_md5 . ']',
$columns,
$foreign_column,
__('Column')
);
// end of column dropdown
$html_output .= '</td>';
} // end if (internal relations)
if (PMA_Util::isForeignKeySupported($tbl_storage_engine)) {
$html_output .= PMA_getHtmlForForeignKey(
$save_row, $i, $existrel_foreign, $myfield, $db,
$myfield_md5, $tbl_storage_engine, $options_array
);
} // end if (InnoDB)
$html_output .= '</tr>';
return $html_output;
}
/**
* Function to get html for the common form header
*
* @param string $db current database
* @param string $table current table
*
* @return string
*/
function PMA_getHtmlForCommonFormHeader($db, $table)
{
return '<form method="post" action="tbl_relation.php">' . "\n"
. PMA_URL_getHiddenInputs($db, $table);
}
/**
* Function to get html for the common form footer
*
* @return string
*/
function PMA_getHtmlForCommonFormFooter()
{
return '<fieldset class="tblFooters">'
. '<input type="submit" value="' . __('Save') . '" />'
. '</fieldset>'
. '</form>';
}
/**
* Function to get html for display field infos
*
* @param string $db current database
* @param string $table current table
* @param array $save_row save row
*
* @return string
*/
function PMA_getHtmlForDisplayFieldInfos($db, $table, $save_row)
{
$disp = PMA_getDisplayField($db, $table);
$html_output = '<fieldset>'
. '<label>' . __('Choose column to display:') . '</label>'
. '<select name="display_field">'
. '<option value="">---</option>';
foreach ($save_row as $row) {
$html_output .= '<option value="'
. htmlspecialchars($row['Field']) . '"';
if (isset($disp) && $row['Field'] == $disp) {
$html_output .= ' selected="selected"';
}
$html_output .= '>' . htmlspecialchars($row['Field'])
. '</option>' . "\n";
} // end while
$html_output .= '</select>'
. '</fieldset>';
return $html_output;
}
/**
* Function to get html for the common form title headers
*
* @param array $cfgRelation configuration relation
* @param string $tbl_storage_engine table storage engine
*
* @return string
*/
function PMA_getHtmlForCommonFormTableHeaders($cfgRelation, $tbl_storage_engine)
{
$html_output = '<tr><th>' . __('Column') . '</th>';
if ($cfgRelation['relwork']) {
$html_output .= '<th>' . __('Internal relation');
if (PMA_Util::isForeignKeySupported($tbl_storage_engine)) {
$html_output .= PMA_Util::showHint(
__(
'An internal relation is not necessary when a corresponding'
. ' FOREIGN KEY relation exists.'
)
);
}
$html_output .= '</th>';
}
if (PMA_Util::isForeignKeySupported($tbl_storage_engine)) {
// this does not have to be translated, it's part of the MySQL syntax
$html_output .= '<th colspan="2">' . __('Foreign key constraint')
. ' (' . $tbl_storage_engine . ')';
$html_output .= '</th>';
}
$html_output .= '</tr>';
return $html_output;
}
/**
* Function to get html for the foreign key
*
* @param array $save_row save row
* @param int $i counter
* @param array $existrel_foreign db, table, columns
* @param string $myfield my field
* @param string $db current database
* @param string $myfield_md5 my field md5
* @param string $tbl_storage_engine table storage engine
* @param array $options_array options array
*
* @return string
*/
function PMA_getHtmlForForeignKey($save_row, $i, $existrel_foreign, $myfield, $db,
$myfield_md5, $tbl_storage_engine, $options_array
) {
$html_output = '<td>';
if (! empty($save_row[$i]['Key'])) {
$foreign_db = false;
$foreign_table = false;
$foreign_column = false;
// foreign database dropdown
if (isset($existrel_foreign[$myfield])) {
$foreign_db = $existrel_foreign[$myfield]['foreign_db'];
} else {
$foreign_db = $db;
}
$html_output .= '<span class="formelement clearfloat">';
$html_output .= PMA_generateRelationalDropdown(
'destination_foreign_db[' . $myfield_md5 . ']',
$GLOBALS['pma']->databases,
$foreign_db,
__('Database')
);
// end of foreign database dropdown
// foreign table dropdown
$tables = array();
if ($foreign_db) {
if (isset($existrel_foreign[$myfield])) {
$foreign_table = $existrel_foreign[$myfield]['foreign_table'];
}
// In Drizzle, 'SHOW TABLE STATUS' will show status only for the tables
// which are currently in the table cache. Hence we have to use
// 'SHOW TABLES' and manully retrieve table engine values.
if (PMA_DRIZZLE) {
$tables_rs = $GLOBALS['dbi']->query(
'SHOW TABLES FROM ' . PMA_Util::backquote($foreign_db),
null,
PMA_DatabaseInterface::QUERY_STORE
);
while ($row = $GLOBALS['dbi']->fetchArray($tables_rs)) {
$engine = PMA_Table::sGetStatusInfo(
$foreign_db,
$row[0],
'Engine'
);
if (isset($engine)
&& strtoupper($engine) == $tbl_storage_engine
) {
$tables[] = $row[0];
}
}
} else {
$tables_rs = $GLOBALS['dbi']->query(
'SHOW TABLE STATUS FROM ' . PMA_Util::backquote($foreign_db),
null,
PMA_DatabaseInterface::QUERY_STORE
);
while ($row = $GLOBALS['dbi']->fetchRow($tables_rs)) {
if (isset($row[1])
&& strtoupper($row[1]) == $tbl_storage_engine
) {
$tables[] = $row[0];
}
}
}
}
$html_output .= PMA_generateRelationalDropdown(
'destination_foreign_table[' . $myfield_md5 . ']',
$tables,
$foreign_table,
__('Table')
);
// end of foreign table dropdown
// foreign column dropdown
$columns = array();
if ($foreign_db && $foreign_table) {
if (isset($existrel_foreign[$myfield])) {
$foreign_column = $existrel_foreign[$myfield]['foreign_field'];
}
$table_obj = new PMA_Table($foreign_table, $foreign_db);
$columns = $table_obj->getUniqueColumns(false, false);
}
$html_output .= PMA_generateRelationalDropdown(
'destination_foreign_column[' . $myfield_md5 . ']',
$columns,
$foreign_column,
__('Column')
);
$html_output .= '</span>';
// end of foreign column dropdown
// For constraint name
$html_output .= '<span class="formelement clearfloat">';
$constraint_name = isset($existrel_foreign[$myfield]['constraint'])
? $existrel_foreign[$myfield]['constraint'] : '';
$html_output .= __('Constraint name');
$html_output .= '<input type="text" name="constraint_name['
. $myfield_md5 . ']"'
. ' value="' . htmlspecialchars($constraint_name) . '"/>';
$html_output .= '</span>' . "\n";
$html_output .= '<span class="formelement clearfloat">';
// For ON DELETE and ON UPDATE, the default action
// is RESTRICT as per MySQL doc; however, a SHOW CREATE TABLE
// won't display the clause if it's set as RESTRICT.
$on_delete = isset($existrel_foreign[$myfield]['on_delete'])
? $existrel_foreign[$myfield]['on_delete'] : 'RESTRICT';
$html_output .= PMA_generateDropdown(
'ON DELETE',
'on_delete[' . $myfield_md5 . ']',
$options_array,
$on_delete
);
$html_output .= '</span>' . "\n";
$html_output .= '<span class="formelement clearfloat">' . "\n";
$on_update = isset($existrel_foreign[$myfield]['on_update'])
? $existrel_foreign[$myfield]['on_update'] : 'RESTRICT';
$html_output .= PMA_generateDropdown(
'ON UPDATE',
'on_update[' . $myfield_md5 . ']',
$options_array,
$on_update
);
$html_output .= '</span>' . "\n";
} else {
$html_output .= __('No index defined! Create one below');
} // end if (a key exists)
$html_output .= '</td>';
return $html_output;
}
/**
* Function to send html for table or column dropdown list
*
* @return void
*/
function PMA_sendHtmlForTableOrColumnDropdownList()
{
if (isset($_REQUEST['foreignTable'])) { // if both db and table are selected
PMA_sendHtmlForColumnDropdownList();
} else { // if only the db is selected
PMA_sendHtmlForTableDropdownList();
}
exit;
}
/**
* Function to send html for column dropdown list
*
* @return void
*/
function PMA_sendHtmlForColumnDropdownList()
{
$response = PMA_Response::getInstance();
$foreignTable = $_REQUEST['foreignTable'];
$table_obj = new PMA_Table($foreignTable, $_REQUEST['foreignDb']);
$columns = array();
foreach ($table_obj->getUniqueColumns(false, false) as $column) {
$columns[] = htmlspecialchars($column);
}
$response->addJSON('columns', $columns);
}
/**
* Function to send html for table dropdown list
*
* @return void
*/
function PMA_sendHtmlForTableDropdownList()
{
$response = PMA_Response::getInstance();
$tables = array();
$foreign = isset($_REQUEST['foreign']) && $_REQUEST['foreign'] === 'true';
if ($foreign) {
$tbl_storage_engine = strtoupper(
PMA_Table::sGetStatusInfo(
$_REQUEST['db'],
$_REQUEST['table'],
'Engine'
)
);
}
// In Drizzle, 'SHOW TABLE STATUS' will show status only for the tables
// which are currently in the table cache. Hence we have to use 'SHOW TABLES'
// and manully retrieve table engine values.
if ($foreign && ! PMA_DRIZZLE) {
$query = 'SHOW TABLE STATUS FROM '
. PMA_Util::backquote($_REQUEST['foreignDb']);
$tables_rs = $GLOBALS['dbi']->query(
$query,
null,
PMA_DatabaseInterface::QUERY_STORE
);
while ($row = $GLOBALS['dbi']->fetchArray($tables_rs)) {
if (isset($row['Engine'])
&& strtoupper($row['Engine']) == $tbl_storage_engine
) {
$tables[] = htmlspecialchars($row['Name']);
}
}
} else {
$query = 'SHOW TABLES FROM '
. PMA_Util::backquote($_REQUEST['foreignDb']);
$tables_rs = $GLOBALS['dbi']->query(
$query,
null,
PMA_DatabaseInterface::QUERY_STORE
);
while ($row = $GLOBALS['dbi']->fetchArray($tables_rs)) {
if ($foreign && PMA_DRIZZLE) {
$engine = strtoupper(
PMA_Table::sGetStatusInfo(
$_REQUEST['foreignDb'],
$row[0],
'Engine'
)
);
if (isset($engine) && $engine == $tbl_storage_engine) {
$tables[] = htmlspecialchars($row[0]);
}
} else {
$tables[] = htmlspecialchars($row[0]);
}
}
}
$response->addJSON('tables', $tables);
}
/**
* Function to handle update for display field
*
* @param string $disp field name
* @param string $display_field display field
* @param string $db current database
* @param string $table current table
* @param array $cfgRelation configuration relation
*
* @return void
*/
function PMA_handleUpdateForDisplayField($disp, $display_field, $db, $table,
$cfgRelation
) {
$upd_query = PMA_getQueryForDisplayUpdate(
$disp, $display_field, $db, $table, $cfgRelation
);
if ($upd_query) {
PMA_queryAsControlUser($upd_query);
}
}
/**
* Function to get display query for handlingdisplay update
*
* @param string $disp field name
* @param string $display_field display field
* @param string $db current database
* @param string $table current table
* @param array $cfgRelation configuration relation
*
* @return string
*/
function PMA_getQueryForDisplayUpdate($disp, $display_field, $db, $table,
$cfgRelation
) {
$upd_query = false;
if ($disp) {
if ($display_field != '') {
$upd_query = 'UPDATE '
. PMA_Util::backquote($GLOBALS['cfgRelation']['db'])
. '.' . PMA_Util::backquote($cfgRelation['table_info'])
. ' SET display_field = \''
. PMA_Util::sqlAddSlashes($display_field) . '\''
. ' WHERE db_name = \'' . PMA_Util::sqlAddSlashes($db) . '\''
. ' AND table_name = \'' . PMA_Util::sqlAddSlashes($table) . '\'';
} else {
$upd_query = 'DELETE FROM '
. PMA_Util::backquote($GLOBALS['cfgRelation']['db'])
. '.' . PMA_Util::backquote($cfgRelation['table_info'])
. ' WHERE db_name = \'' . PMA_Util::sqlAddSlashes($db) . '\''
. ' AND table_name = \'' . PMA_Util::sqlAddSlashes($table) . '\'';
}
} elseif ($display_field != '') {
$upd_query = 'INSERT INTO '
. PMA_Util::backquote($GLOBALS['cfgRelation']['db'])
. '.' . PMA_Util::backquote($cfgRelation['table_info'])
. '(db_name, table_name, display_field) VALUES('
. '\'' . PMA_Util::sqlAddSlashes($db) . '\','
. '\'' . PMA_Util::sqlAddSlashes($table) . '\','
. '\'' . PMA_Util::sqlAddSlashes($display_field) . '\')';
}
return $upd_query;
}
/**
* Function to handle updates for internal relations
*
* @param string $destination_db destination database
* @param string $multi_edit_columns_name multi edit column name
* @param string $destination_table destination table
* @param string $destination_column destination column
* @param array $cfgRelation configuration relation
* @param string $db current database
* @param string $table current table
* @param array $existrel db, table, column
*
* @return void
*/
function PMA_handleUpdatesForInternalRelations($destination_db,
$multi_edit_columns_name, $destination_table, $destination_column, $cfgRelation,
$db, $table, $existrel
) {
foreach ($destination_db as $master_field_md5 => $foreign_db) {
$upd_query = PMA_getQueryForInternalRelationUpdate(
$multi_edit_columns_name,
$master_field_md5, $foreign_db, $destination_table, $destination_column,
$cfgRelation, $db, $table, isset($existrel) ? $existrel : null
);
if ($upd_query) {
PMA_queryAsControlUser($upd_query);
}
}
}
/**
* Function to get update query for updating internal relations
*
* @param string $multi_edit_columns_name multi edit column names
* @param string $master_field_md5 master field md5
* @param string $foreign_db foreign database
* @param string $destination_table destination table
* @param string $destination_column destination column
* @param array $cfgRelation configuration relation
* @param string $db current database
* @param string $table current table
* @param array $existrel db, table, column
*
* @return string
*/
function PMA_getQueryForInternalRelationUpdate($multi_edit_columns_name,
$master_field_md5, $foreign_db, $destination_table, $destination_column,
$cfgRelation, $db, $table, $existrel
) {
$upd_query = false;
// Map the fieldname's md5 back to its real name
$master_field = $multi_edit_columns_name[$master_field_md5];
$foreign_table = $destination_table[$master_field_md5];
$foreign_field = $destination_column[$master_field_md5];
if (! empty($foreign_db)
&& ! empty($foreign_table)
&& ! empty($foreign_field)
) {
if (! isset($existrel[$master_field])) {
$upd_query = 'INSERT INTO '
. PMA_Util::backquote($GLOBALS['cfgRelation']['db'])
. '.' . PMA_Util::backquote($cfgRelation['relation'])
. '(master_db, master_table, master_field, foreign_db,'
. ' foreign_table, foreign_field)'
. ' values('
. '\'' . PMA_Util::sqlAddSlashes($db) . '\', '
. '\'' . PMA_Util::sqlAddSlashes($table) . '\', '
. '\'' . PMA_Util::sqlAddSlashes($master_field) . '\', '
. '\'' . PMA_Util::sqlAddSlashes($foreign_db) . '\', '
. '\'' . PMA_Util::sqlAddSlashes($foreign_table) . '\','
. '\'' . PMA_Util::sqlAddSlashes($foreign_field) . '\')';
} elseif ($existrel[$master_field]['foreign_db'] != $foreign_db
|| $existrel[$master_field]['foreign_table'] != $foreign_table
|| $existrel[$master_field]['foreign_field'] != $foreign_field
) {
$upd_query = 'UPDATE '
. PMA_Util::backquote($GLOBALS['cfgRelation']['db'])
. '.' . PMA_Util::backquote($cfgRelation['relation']) . ' SET'
. ' foreign_db = \''
. PMA_Util::sqlAddSlashes($foreign_db) . '\', '
. ' foreign_table = \''
. PMA_Util::sqlAddSlashes($foreign_table) . '\', '
. ' foreign_field = \''
. PMA_Util::sqlAddSlashes($foreign_field) . '\' '
. ' WHERE master_db = \''
. PMA_Util::sqlAddSlashes($db) . '\''
. ' AND master_table = \''
. PMA_Util::sqlAddSlashes($table) . '\''
. ' AND master_field = \''
. PMA_Util::sqlAddSlashes($master_field) . '\'';
} // end if... else....
} elseif (isset($existrel[$master_field])) {
$upd_query = 'DELETE FROM '
. PMA_Util::backquote($GLOBALS['cfgRelation']['db'])
. '.' . PMA_Util::backquote($cfgRelation['relation'])
. ' WHERE master_db = \'' . PMA_Util::sqlAddSlashes($db) . '\''
. ' AND master_table = \'' . PMA_Util::sqlAddSlashes($table) . '\''
. ' AND master_field = \'' . PMA_Util::sqlAddSlashes($master_field)
. '\'';
} // end if... else....
return $upd_query;
}
/**
* Function to handle foreign key updates
*
* @param string $destination_foreign_db destination foreign database
* @param string $multi_edit_columns_name multi edit column names
* @param string $destination_foreign_table destination foreign table
* @param string $destination_foreign_column destination foreign column
* @param array $options_array options array
* @param string $table current table
* @param array $existrel_foreign db, table, column
*
* @return string
*/
function PMA_handleUpdatesForForeignKeys($destination_foreign_db,
$multi_edit_columns_name, $destination_foreign_table,
$destination_foreign_column, $options_array, $table, $existrel_foreign
) {
$html_output = '';
$display_query = '';
$seen_error = false;
foreach ($destination_foreign_db as $master_field_md5 => $foreign_db) {
$html_output .= PMA_handleUpdateForForeignKey(
$multi_edit_columns_name, $master_field_md5,
$destination_foreign_table, $destination_foreign_column, $options_array,
$existrel_foreign, $table, $seen_error, $display_query, $foreign_db
);
} // end foreach
if (! empty($display_query) && ! $seen_error) {
$GLOBALS['display_query'] = $display_query;
$html_output = PMA_Util::getMessage(
__('Your SQL query has been executed successfully.'),
null, 'success'
);
}
return $html_output;
}
/**
* Function to handle update for a foreign key
*
* @param array $multi_edit_columns_name multu edit columns name
* @param string $master_field_md5 master field md5
* @param string $destination_foreign_table destination foreign table
* @param string $destination_foreign_column destination foreign column
* @param array $options_array options array
* @param array $existrel_foreign db, table, column
* @param string $table current table
* @param bool &$seen_error whether seen error
* @param string &$display_query display query
* @param string $foreign_db foreign database
*
* @return string
*/
function PMA_handleUpdateForForeignKey($multi_edit_columns_name, $master_field_md5,
$destination_foreign_table, $destination_foreign_column, $options_array,
$existrel_foreign, $table, &$seen_error, &$display_query, $foreign_db
) {
$html_output = '';
$create = false;
$drop = false;
// Map the fieldname's md5 back to its real name
$master_field = $multi_edit_columns_name[$master_field_md5];
$foreign_table = $destination_foreign_table[$master_field_md5];
$foreign_field = $destination_foreign_column[$master_field_md5];
if (! empty($foreign_db)
&& ! empty($foreign_table)
&& ! empty($foreign_field)
) {
if ( isset($existrel_foreign[$master_field])) {
$constraint_name = $existrel_foreign[$master_field]['constraint'];
$on_delete = ! empty(
$existrel_foreign[$master_field]['on_delete'])
? $existrel_foreign[$master_field]['on_delete'] : 'RESTRICT';
$on_update = ! empty(
$existrel_foreign[$master_field]['on_update'])
? $existrel_foreign[$master_field]['on_update'] : 'RESTRICT';
}
if (! isset($existrel_foreign[$master_field])) {
// no key defined for this field
$create = true;
} elseif ($existrel_foreign[$master_field]['foreign_db'] != $foreign_db
|| $existrel_foreign[$master_field]['foreign_table'] != $foreign_table
|| $existrel_foreign[$master_field]['foreign_field'] != $foreign_field
|| $_REQUEST['constraint_name'][$master_field_md5] != $constraint_name
|| ($_REQUEST['on_delete'][$master_field_md5] != $on_delete)
|| ($_REQUEST['on_update'][$master_field_md5] != $on_update)
) {
// another foreign key is already defined for this field
// or an option has been changed for ON DELETE or ON UPDATE
$drop = true;
$create = true;
} // end if... else....
} elseif (isset($existrel_foreign[$master_field])) {
$drop = true;
} // end if... else....
$tmp_error_drop = false;
if ($drop) {
$drop_query = PMA_getSQLToDropForeignKey(
$table, $existrel_foreign[$master_field]['constraint']
);
$display_query .= $drop_query . "\n";
$GLOBALS['dbi']->tryQuery($drop_query);
$tmp_error_drop = $GLOBALS['dbi']->getError();
if (! empty($tmp_error_drop)) {
$seen_error = true;
$html_output .= PMA_Util::mysqlDie(
$tmp_error_drop, $drop_query, false, '', false
);
return $html_output;
}
}
$tmp_error_create = false;
if ($create) {
$create_query = PMA_getSQLToCreateForeignKey(
$table, $master_field, $foreign_db, $foreign_table, $foreign_field,
$_REQUEST['constraint_name'][$master_field_md5],
$options_array[$_REQUEST['on_delete'][$master_field_md5]],
$options_array[$_REQUEST['on_update'][$master_field_md5]]
);
$display_query .= $create_query . "\n";
$GLOBALS['dbi']->tryQuery($create_query);
$tmp_error_create = $GLOBALS['dbi']->getError();
if (! empty($tmp_error_create)) {
$seen_error = true;
if (substr($tmp_error_create, 1, 4) == '1005') {
$message = PMA_Message::error(
__('Error creating foreign key on %1$s (check data types)')
);
$message->addParam($master_field);
$html_output .= $message->getDisplay();
} else {
$html_output .= PMA_Util::mysqlDie(
$tmp_error_create, $create_query, false, '', false
);
}
$html_output .= PMA_Util::showMySQLDocu(
'InnoDB_foreign_key_constraints'
) . "\n";
}
// this is an alteration and the old constraint has been dropped
// without creation of a new one
if ($drop && $create && empty($tmp_error_drop)
&& ! empty($tmp_error_create)
) {
// a rollback may be better here
$sql_query_recreate = '# Restoring the dropped constraint...' . "\n";
$sql_query_recreate .= PMA_getSQLToCreateForeignKey(
$table,
$master_field,
$existrel_foreign[$master_field]['foreign_db'],
$existrel_foreign[$master_field]['foreign_table'],
$existrel_foreign[$master_field]['foreign_field'],
$existrel_foreign[$master_field]['constraint'],
$options_array[$existrel_foreign[$master_field]['on_delete']],
$options_array[$existrel_foreign[$master_field]['on_update']]
);
$display_query .= $sql_query_recreate . "\n";
$GLOBALS['dbi']->tryQuery($sql_query_recreate);
}
}
return $html_output;
}
?>
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