bitPickups/friendica_2020-09-1_sharedHosting
1
0
Fork 0
Code Pull requests Activity

add support to schema modification with multi-column primary key

Browse source
This commit is contained in:
fabrixxm 2015-12-08 10:35:08 +01:00
parent 95508bf4bb
commit f97e20acd3
1 changed files with 47 additions and 29 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

76
include/dbstructure.php
View file

@ -142,26 +142,37 @@ function update_structure($verbose, $action, $tables=null, $definition=null) {
// Get the definition
if (is_null($definition))
$definition = db_definition();
// Compare it
foreach ($definition AS $name => $structure) {
$is_new_table = False;
$sql3="";
if (!isset($database[$name])) {
$r = db_create_table($name, $structure["fields"], $verbose, $action);
$r = db_create_table($name, $structure["fields"], $verbose, $action, $structure['indexes']);
if(false === $r) {
$errors .= t('Errors encountered creating database tables.').$name.EOL;
}
$is_new_table = True;
} else {
// Drop the index if it isn't present in the definition and index name doesn't start with "local_"
foreach ($database[$name]["indexes"] AS $indexname => $fieldnames)
if (!isset($structure["indexes"][$indexname]) && substr($indexname, 0, 6) != 'local_') {
// Drop the index if it isn't present in the definition
// or the definition differ from current status
// and index name doesn't start with "local_"
foreach ($database[$name]["indexes"] AS $indexname => $fieldnames) {
$current_index_definition = implode(",",$fieldnames);
if (isset($structure["indexes"][$indexname])) {
$new_index_definition = implode(",",$structure["indexes"][$indexname]);
} else {
$new_index_definition = "__NOT_SET__";
}
if ($current_index_definition != $new_index_definition && substr($indexname, 0, 6) != 'local_') {
$sql2=db_drop_index($indexname);
if ($sql3 == "")
$sql3 = "ALTER TABLE `".$name."` ".$sql2;
else
$sql3 .= ", ".$sql2;
}
}
// Compare the field structure field by field
foreach ($structure["fields"] AS $fieldname => $parameters) {
if (!isset($database[$name]["fields"][$fieldname])) {
@ -186,19 +197,28 @@ function update_structure($verbose, $action, $tables=null, $definition=null) {
}
}
// Create the index
foreach ($structure["indexes"] AS $indexname => $fieldnames) {
if (!isset($database[$name]["indexes"][$indexname])) {
$sql2=db_create_index($indexname, $fieldnames);
if ($sql2 != "") {
if ($sql3 == "")
$sql3 = "ALTER TABLE `".$name."` ".$sql2;
else
$sql3 .= ", ".$sql2;
// Create the index if the index don't exists in database
// or the definition differ from the current status.
// Don't create keys if table is new
if (!$is_new_table) {
foreach ($structure["indexes"] AS $indexname => $fieldnames) {
if (isset($database[$name]["indexes"][$indexname])) {
$current_index_definition = implode(",",$database[$name]["indexes"][$indexname]);
} else {
$current_index_definition = "__NOT_SET__";
}
$new_index_definition = implode(",",$fieldnames);
if ($current_index_definition != $new_index_definition) {
$sql2=db_create_index($indexname, $fieldnames);
if ($sql2 != "") {
if ($sql3 == "")
$sql3 = "ALTER TABLE `".$name."` ".$sql2;
else
$sql3 .= ", ".$sql2;
}
}
}
}
if ($sql3 != "") {
$sql3 .= ";";
@ -244,7 +264,7 @@ function db_create_table($name, $fields, $verbose, $action, $indexes=null) {
$r = true;
$sql = "";
$sql_rows = array();
$primary_keys = array();
foreach($fields AS $fieldname => $field) {
@ -255,17 +275,12 @@ function db_create_table($name, $fields, $verbose, $action, $indexes=null) {
}
if (!is_null($indexes)) {
foreach ($indexes AS $indexname => $fieldnames) {
$sql_index = db_create_index($indexname, $fieldnames, "");
if (!is_null($sql_index)) $sql_rows[] = $sql_index;
}
}
if (count($primary_keys)>0) {
$sql_rows[] = sprintf("PRIMARY KEY(`%s`)", implode("`,`", $primary_keys));
}
$sql = implode(",\n\t", $sql_rows);
$sql = sprintf("CREATE TABLE IF NOT EXISTS `%s` (\n\t", dbesc($name)).$sql."\n) DEFAULT CHARSET=utf8";
@ -295,8 +310,16 @@ function db_drop_index($indexname) {
function db_create_index($indexname, $fieldnames, $method="ADD") {
if ($indexname == "PRIMARY")
return;
$method = strtoupper(trim($method));
if ($method!="" && $method!="ADD") {
throw new Exception("Invalid parameter 'method' in db_create_index(): '$method'");
killme();
}
if ($indexname == "PRIMARY") {
return sprintf("%s PRIMARY KEY(`%s`)", $method, implode("`,`", $fieldnames));
}
$names = "";
foreach ($fieldnames AS $fieldname) {
@ -309,11 +332,6 @@ function db_create_index($indexname, $fieldnames, $method="ADD") {
$names .= "`".dbesc($fieldname)."`";
}
$method = strtoupper(trim($method));
if ($method!="" && $method!="ADD") {
throw new Exception("Invalid parameter 'method' in db_create_index(): '$method'");
killme();
}
$sql = sprintf("%s INDEX `%s` (%s)", $method, dbesc($indexname), $names);
return($sql);