mirror of
https://github.com/OpenXE-org/OpenXE.git
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750 lines
29 KiB
PHP
750 lines
29 KiB
PHP
<?php
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/*
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MUSTAL Mysql Upgrade Schema Tool by Alex Ledis
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Helper to compare database structures from JSON files vs. database and upgrade database
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Copyright (c) 2022 Alex Ledis
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Licensed under AGPL v3
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Version 1.0
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function mustal_load_tables_from_db(string $host, string $schema, string $user, string $passwd, $replacers) : array
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Load structure from db connection to an array.
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function mustal_save_tables_to_json(array $db_def, string $path, string $tables_file_name, bool $force) : int
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Save structure from array to a JSON file.
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function mustal_load_tables_from_json(string $path, string $tables_file_name) : array
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Load structure from JSON file into array.
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function mustal_compare_table_array(array $nominal, string $nominal_name, array $actual, string $actual_name, bool $check_column_definitions) : array
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Compare two database structures
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Returns a structured array containing information on all the differences.
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function mustal_calculate_db_upgrade(array $compare_def, array $db_def, array &$upgrade_sql) : int
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Generate the SQL needed to upgrade the database to match the definition, based on a comparison.
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Data structure in Array and JSON
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{
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"host": "hostname",
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"database": "schemaname",
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"user": "username",
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"tables": [
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{
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"name": "",
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"type": "",
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"columns": [
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{
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"Field": "",
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"Type": "",
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"Collation": "",
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"Null": "",
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"Key": "",
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"Default": "",
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"Extra": "",
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"Privileges": "",
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"Comment": ""
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}
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],
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"keys": [
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{
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"Key_name": "",
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"columns": [
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"",
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""
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]
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}
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]
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}
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]
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}
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*/
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// These default values will not be in quotes, converted to lowercase and be replaced by the second entry
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$mustal_replacers = [
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['current_timestamp','current_timestamp()'],
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['on update current_timestamp','on update current_timestamp()']
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];
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// Load all db_def from a DB connection into a db_def array
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function mustal_load_tables_from_db(string $host, string $schema, string $user, string $passwd, array $replacers) : array {
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// First get the contents of the database table structure
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$mysqli = mysqli_connect($host, $user, $passwd, $schema);
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/* Check if the connection succeeded */
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if (!$mysqli) {
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return(array());
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}
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// Get db_def and views
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$sql = "SHOW FULL tables WHERE Table_type = 'BASE TABLE'";
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$query_result = mysqli_query($mysqli, $sql);
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if (!$query_result) {
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return(array());
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}
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while ($row = mysqli_fetch_assoc($query_result)) {
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$table = array();
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$table['name'] = $row['Tables_in_'.$schema];
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$table['type'] = $row['Table_type'];
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$tables[] = $table; // Add table to list of tables
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}
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// Get and add columns of the table
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foreach ($tables as &$table) {
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$sql = "SHOW FULL COLUMNS FROM ".$table['name'];
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$query_result = mysqli_query($mysqli, $sql);
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if (!$query_result) {
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return(array());
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}
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$columns = array();
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while ($column = mysqli_fetch_assoc($query_result)) {
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// Do some harmonization
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if ($column['Default'] !== NULL) {
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mustal_sql_replace_reserved_functions($column,$replacers);
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$column['Default'] = mustal_mysql_put_text_type_in_quotes($column['Type'],$column['Default']);
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}
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$columns[] = $column; // Add column to list of columns
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}
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$table['columns'] = $columns;
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$sql = "SHOW KEYS FROM ".$table['name'];
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$query_result = mysqli_query($mysqli, $sql);
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if (!$query_result) {
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return(array());
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}
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$keys = array();
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while ($key = mysqli_fetch_assoc($query_result)) {
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$keys[] = $key; // Add key to list of keys
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}
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// Compose comparable format for keys
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$composed_keys = array();
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foreach ($keys as $key) {
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// Check if this key exists already
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$key_pos = array_search($key['Key_name'],array_column($composed_keys,'Key_name'));
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if ($key_pos === false) {
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// New key
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$composed_key = array();
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$composed_key['Key_name'] = $key['Key_name'];
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$composed_key['Index_type'] = $key['Index_type'];
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$composed_key['Non_unique'] = ($key['Non_unique'] == 1)?'UNIQUE':'';
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$composed_key['columns'][] = $key['Column_name'];
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$composed_keys[] = $composed_key;
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} else {
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// Given key, add column
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$composed_keys[$key_pos]['columns'][] .= $key['Column_name'];
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}
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}
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unset($key);
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$table['keys'] = $composed_keys;
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unset($composed_keys);
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}
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unset($table);
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$sql = "SHOW FULL tables WHERE Table_type = 'VIEW'";
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$query_result = mysqli_query($mysqli, $sql);
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if (!$query_result) {
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return(array());
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}
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while ($row = mysqli_fetch_assoc($query_result)) {
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$view = array();
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$view['name'] = $row['Tables_in_'.$schema];
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$view['type'] = $row['Table_type'];
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$views[] = $view; // Add view to list of views
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}
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foreach ($views as &$view) {
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$sql = "SHOW CREATE VIEW ".$view['name'];
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$query_result = mysqli_query($mysqli, $sql);
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if (!$query_result) {
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return(array());
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}
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$viewdef = mysqli_fetch_assoc($query_result);
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// Remove the security info from view definition
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$view['Create'] = "CREATE ".stristr($viewdef['Create View'],"VIEW");
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}
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$result = array();
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$result['host'] = $host;
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$result['database'] = $schema;
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$result['user'] = $user;
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$result['tables'] = $tables;
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$result['views'] = $views;
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return($result);
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}
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function mustal_save_tables_to_json(array $db_def, string $path, string $tables_file_name, bool $force) : int {
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// Prepare db_def file
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if (!is_dir($path)) {
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mkdir($path);
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}
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if (!$force && file_exists($path."/".$tables_file_name)) {
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return(2);
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}
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$tables_file = fopen($path."/".$tables_file_name, "w");
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if (empty($tables_file)) {
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return(2);
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}
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fwrite($tables_file, json_encode($db_def,JSON_PRETTY_PRINT));
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fclose($tables_file);
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return(0);
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}
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// Load all db_def from JSON file
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function mustal_load_tables_from_json(string $path, string $tables_file_name) : array {
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$db_def = array();
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$contents = file_get_contents($path."/".$tables_file_name);
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if (!$contents) {
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return(array());
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}
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$db_def = json_decode($contents, true);
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if (!$db_def) {
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return(array());
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}
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return($db_def);
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}
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// Compare two definitions
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// Report based on the first array
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// Return Array
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function mustal_compare_table_array(array $nominal, string $nominal_name, array $actual, string $actual_name, bool $check_column_definitions, bool $utf8fix) : array {
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$compare_differences = array();
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if($utf8fix) {
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$column_collation_aliases = array(
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['utf8mb3_general_ci','utf8_general_ci'],
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['utf8mb3_unicode_ci','utf8_unicode_ci'],
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['utf8mb3_bin','utf8_bin']
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);
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} else {
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$column_collation_aliases = array();
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}
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foreach ($nominal['tables'] as $database_table) {
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$found_table = array();
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foreach ($actual['tables'] as $compare_table) {
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if ($database_table['name'] == $compare_table['name']) {
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$found_table = $compare_table;
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break;
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}
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}
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unset($compare_table);
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if ($found_table) {
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// Check type table vs view
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if ($database_table['type'] != $found_table['type']) {
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$compare_difference = array();
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$compare_difference['type'] = "Table type";
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$compare_difference['table'] = $database_table['name'];
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$compare_difference[$nominal_name] = $database_table['type'];
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$compare_difference[$actual_name] = $found_table['type'];
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$compare_differences[] = $compare_difference;
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}
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// Only BASE TABLE supported now
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if ($found_table['type'] != 'BASE TABLE') {
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continue;
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}
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// Check columns
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$compare_table_columns = array_column($found_table['columns'],'Field');
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foreach ($database_table['columns'] as $column) {
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$column_name_to_find = $column['Field'];
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$column_key = array_search($column_name_to_find,$compare_table_columns,true);
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if ($column_key !== false) {
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// Compare the properties of the columns
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if ($check_column_definitions) {
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$found_column = $found_table['columns'][$column_key];
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foreach ($column as $key => $value) {
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// Apply aliases
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if (!empty($column_collation_aliases)) {
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foreach($column_collation_aliases as $column_collation_alias) {
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if ($value == $column_collation_alias[0]) {
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$value = $column_collation_alias[1];
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}
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if ($found_column[$key] == $column_collation_alias[0]) {
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$found_column[$key] = $column_collation_alias[1];
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}
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}
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}
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if ($found_column[$key] != $value) {
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if ($key != 'Key') { // Keys will be handled separately
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$compare_difference = array();
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$compare_difference['type'] = "Column definition";
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$compare_difference['table'] = $database_table['name'];
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$compare_difference['column'] = $column['Field'];
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$compare_difference['property'] = $key;
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$compare_difference[$nominal_name] = $value;
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$compare_difference[$actual_name] = $found_column[$key];
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$compare_differences[] = $compare_difference;
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}
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}
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}
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unset($value);
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} // $check_column_definitions
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} else {
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$compare_difference = array();
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$compare_difference['type'] = "Column existence";
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$compare_difference['table'] = $database_table['name'];
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$compare_difference[$nominal_name] = $column['Field'];
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$compare_differences[] = $compare_difference;
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}
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}
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unset($column);
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// Check keys
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$compare_table_sql_indexs = array_column($found_table['keys'],'Key_name');
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foreach ($database_table['keys'] as $sql_index) {
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$sql_index_name_to_find = $sql_index['Key_name'];
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$sql_index_key = array_search($sql_index_name_to_find,$compare_table_sql_indexs,true);
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if ($sql_index_key !== false) {
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// Compare the properties of the sql_indexs
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if ($check_column_definitions) {
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$found_sql_index = $found_table['keys'][$sql_index_key];
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foreach ($sql_index as $key => $value) {
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if ($found_sql_index[$key] != $value) {
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$compare_difference = array();
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$compare_difference['type'] = "Key definition";
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$compare_difference['table'] = $database_table['name'];
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$compare_difference['key'] = $sql_index['Key_name'];
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$compare_difference['property'] = $key;
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/* $compare_difference[$nominal_name] = implode(',',$value);
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$compare_difference[$actual_name] = implode(',',$found_sql_index[$key]);*/
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$compare_difference[$nominal_name] = $value;
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$compare_difference[$actual_name] = $found_sql_index[$key];
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$compare_differences[] = $compare_difference;
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}
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}
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unset($value);
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} // $check_sql_index_definitions
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} else {
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$compare_difference = array();
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$compare_difference['type'] = "Key existence";
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$compare_difference['table'] = $database_table['name'];
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$compare_difference[$nominal_name] = $sql_index['Key_name'];
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$compare_differences[] = $compare_difference;
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}
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}
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unset($sql_index);
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} else {
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$compare_difference = array();
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$compare_difference['type'] = "Table existence";
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$compare_difference[$nominal_name] = $database_table['name'];
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$compare_differences[] = $compare_difference;
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}
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}
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unset($database_table);
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foreach ($nominal['views'] as $database_view) {
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$found_view = array();
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foreach ($actual['views'] as $compare_view) {
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if ($database_view['name'] == $compare_view['name']) {
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$found_view = $compare_view;
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break;
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}
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}
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unset($compare_view);
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if ($found_view) {
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if (trim($database_view['Create']) != trim($found_view['Create'])) {
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$compare_difference = array();
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$compare_difference['type'] = "View definition";
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$compare_difference[$nominal_name] = $database_view['name'];
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$compare_differences[] = $compare_difference;
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}
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} else {
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$compare_difference = array();
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$compare_difference['type'] = "View existence";
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$compare_difference[$nominal_name] = $database_view['name'];
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$compare_differences[] = $compare_difference;
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}
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}
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return($compare_differences);
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}
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// Generate SQL to create or modify column
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function mustal_column_sql_definition(string $table_name, array $column, array $reserved_words_without_quote) : string {
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foreach($column as $key => &$value) {
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$value = (string) $value;
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$value = mustal_column_sql_create_property_definition($key,$value,$reserved_words_without_quote);
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}
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// Default handling here
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if ($column['Default'] == " DEFAULT ''") {
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$column['Default'] = "";
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}
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$sql =
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$column['Type'].
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$column['Null'].
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$column['Default'].
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$column['Extra'].
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$column['Collation'];
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return($sql);
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}
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// Generate SQL to modify a single column property
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function mustal_column_sql_create_property_definition(string $property, string $property_value, array $reserved_words_without_quote) : string {
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switch ($property) {
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case 'Type':
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break;
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case 'Null':
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if ($property_value == "NO") {
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$property_value = " NOT NULL"; // Idiotic...
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}
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if ($property_value == "YES") {
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$property_value = " NULL"; // Also Idiotic...
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}
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break;
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case 'Default':
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// Check for MYSQL function mustal_call as default
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if (in_array(strtolower($property_value),$reserved_words_without_quote)) {
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$quote = "";
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} else {
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// Remove quotes if there are
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$property_value = trim($property_value,"'");
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$quote = "'";
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}
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$property_value = " DEFAULT $quote".$property_value."$quote";
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break;
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case 'Extra':
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if ($property_value != '') {
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$property_value = " ".$property_value;
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}
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break;
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case 'Collation':
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if ($property_value != '') {
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$property_value = " COLLATE ".$property_value;
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}
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break;
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default:
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$property_value = "";
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break;
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}
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return($property_value);
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}
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// Replaces different variants of the same function mustal_to allow comparison
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function mustal_sql_replace_reserved_functions(array &$column, array $replacers) {
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$result = strtolower($column['Default']);
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foreach ($replacers as $replace) {
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if ($result == $replace[0]) {
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$result = $replace[1];
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}
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}
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$column['Default'] = $result;
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$result = strtolower($column['Extra']);
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foreach ($replacers as $replace) {
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if ($result == $replace[0]) {
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$result = $replace[1];
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}
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}
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$column['Extra'] = $result;
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}
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// Is it a text type? -> Use quotes then
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function mustal_mysql_put_text_type_in_quotes(string $checktype, string $value) : string {
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$types = array('char','varchar','tinytext','text','mediumtext','longtext');
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foreach($types as $type) {
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if (stripos($checktype, $type) !== false) {
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return("'".$value."'");
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}
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}
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return($value);
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}
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function mustal_implode_with_quote(string $quote, string $delimiter, array $array_to_implode) : string {
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return($quote.implode($quote.$delimiter.$quote, $array_to_implode).$quote);
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}
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// Calculate the sql neccessary to update the database
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// returns array(code,text)
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// Error codes:
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// 0 ok
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// 1 Upgrade type of table not supported
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// 2 Error on table upgrade
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// 3 Error on column existence upgrade
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// 4 Error on column existence upgrade
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// 5 Error on column definition upgrade
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// 6 Error on column definition upgrade
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// 7 Error on key existence upgrade
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// 8 Error on key existence upgrade
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// 9 Error on key definition upgrade
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// 10 Error on key definition upgrade
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// 11 Table type upgrade not supported
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// 12 Upgrade type not supported
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function mustal_calculate_db_upgrade(array $compare_def, array $db_def, array &$upgrade_sql, array $replacers) : array {
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$result = array();
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$upgrade_sql = array();
|
|
|
|
$compare_differences = mustal_compare_table_array($compare_def,"in JSON",$db_def,"in DB",true,true);
|
|
|
|
foreach ($compare_differences as $compare_difference) {
|
|
|
|
$drop_view = false;
|
|
|
|
switch ($compare_difference['type']) {
|
|
case 'Table existence':
|
|
|
|
// Get table definition from JSON
|
|
|
|
$table_name = $compare_difference['in JSON'];
|
|
|
|
$table_key = array_search($table_name,array_column($compare_def['tables'],'name'));
|
|
|
|
if ($table_key !== false) {
|
|
$table = $compare_def['tables'][$table_key];
|
|
|
|
switch ($table['type']) {
|
|
case 'BASE TABLE':
|
|
|
|
// Create table in DB
|
|
$sql = "";
|
|
$sql = "CREATE TABLE `".$table['name']."` (";
|
|
$comma = "";
|
|
|
|
foreach ($table['columns'] as $column) {
|
|
$sql .= $comma."`".$column['Field']."` ".mustal_column_sql_definition($table_name, $column,array_column($replacers,1));
|
|
$comma = ", ";
|
|
}
|
|
|
|
// Add keys
|
|
$comma = ", ";
|
|
foreach ($table['keys'] as $key) {
|
|
if ($key['Key_name'] == 'PRIMARY') {
|
|
$keystring = "PRIMARY KEY ";
|
|
} else {
|
|
|
|
if(array_key_exists('Index_type', $key)) {
|
|
$index_type = $key['Index_type'];
|
|
} else {
|
|
$index_type = "";
|
|
}
|
|
|
|
$keystring = $index_type." ".$key['Non_unique']." KEY `".$key['Key_name']."` ";
|
|
}
|
|
$sql .= $comma.$keystring."(`".implode("`,`",$key['columns'])."`) ";
|
|
}
|
|
$sql .= ")";
|
|
$upgrade_sql[] = $sql;
|
|
break;
|
|
default:
|
|
$result[] = array(1,"Upgrade type '".$table['type']."' on table '".$table['name']."' not supported.");
|
|
break;
|
|
}
|
|
} else {
|
|
$result[] = array(2,"Error table_key while creating upgrade for table existence `$table_name`.");
|
|
}
|
|
|
|
break;
|
|
case 'Column existence':
|
|
$table_name = $compare_difference['table'];
|
|
$column_name = $compare_difference['in JSON'];
|
|
$table_key = array_search($table_name,array_column($compare_def['tables'],'name'));
|
|
if ($table_key !== false) {
|
|
$table = $compare_def['tables'][$table_key];
|
|
$columns = $table['columns'];
|
|
$column_key = array_search($column_name,array_column($columns,'Field'));
|
|
if ($column_key !== false) {
|
|
$column = $table['columns'][$column_key];
|
|
$sql = "ALTER TABLE `$table_name` ADD COLUMN `".$column_name."` ";
|
|
$sql .= mustal_column_sql_definition($table_name, $column, array_column($replacers,1));
|
|
$sql .= ";";
|
|
$upgrade_sql[] = $sql;
|
|
}
|
|
else {
|
|
$result[] = array(3,"Error column_key while creating column '$column_name' in table '".$table['name']."'.");
|
|
}
|
|
}
|
|
else {
|
|
$result[] = array(4,"Error table_key while creating upgrade for column existence '$column_name' in table '$table_name'.");
|
|
}
|
|
// Add Column in DB
|
|
break;
|
|
case 'Column definition':
|
|
$table_name = $compare_difference['table'];
|
|
$column_name = $compare_difference['column'];
|
|
$table_key = array_search($table_name,array_column($compare_def['tables'],'name'));
|
|
if ($table_key !== false) {
|
|
$table = $compare_def['tables'][$table_key];
|
|
$columns = $table['columns'];
|
|
|
|
$column_names = array_column($columns,'Field');
|
|
$column_key = array_search($column_name,$column_names);
|
|
|
|
if ($column_key !== false) {
|
|
$column = $table['columns'][$column_key];
|
|
|
|
$sql = "ALTER TABLE `$table_name` MODIFY COLUMN `".$column_name."` ";
|
|
$sql .= mustal_column_sql_definition($table_name, $column,array_column($replacers,1));
|
|
$sql .= ";";
|
|
$upgrade_sql[] = $sql;
|
|
}
|
|
else {
|
|
$result[] = array(5,"Error column_key while modifying column '$column_name' in table '".$table['name']."'.");
|
|
}
|
|
}
|
|
else {
|
|
$result[] = array(6,"Error table_key while modifying column '$column_name' in table '$table_name'.");
|
|
return(6);
|
|
}
|
|
// Modify Column in DB
|
|
break;
|
|
case 'Key existence':
|
|
|
|
$table_name = $compare_difference['table'];
|
|
$key_name = $compare_difference['in JSON'];
|
|
$table_key = array_search($table_name,array_column($compare_def['tables'],'name'));
|
|
if ($table_key !== false) {
|
|
$table = $compare_def['tables'][$table_key];
|
|
$keys = $table['keys'];
|
|
|
|
$key_names = array_column($keys,'Key_name');
|
|
$key_key = array_search($key_name,$key_names);
|
|
|
|
if ($key_key !== false) {
|
|
$key = $table['keys'][$key_key];
|
|
|
|
$sql = "ALTER TABLE `$table_name` ADD ".$key['Non_unique']." KEY `".$key_name."` ";
|
|
$sql .= "(`".implode("`,`",$key['columns'])."`)";
|
|
$sql .= ";";
|
|
$upgrade_sql[] = $sql;
|
|
}
|
|
else {
|
|
$result[] = array(7,"Error key_key while adding key '$key_name' in table '".$table['name']."'.");
|
|
}
|
|
}
|
|
else {
|
|
$result[] = array(8,"Error table_key while adding key '$key_name' in table '$table_name'.");
|
|
}
|
|
break;
|
|
case "Key definition":
|
|
$table_name = $compare_difference['table'];
|
|
$key_name = $compare_difference['key'];
|
|
$table_key = array_search($table_name,array_column($compare_def['tables'],'name'));
|
|
if ($table_key !== false) {
|
|
$table = $compare_def['tables'][$table_key];
|
|
$keys = $table['keys'];
|
|
|
|
$key_names = array_column($keys,'Key_name');
|
|
$key_key = array_search($key_name,$key_names);
|
|
|
|
if ($key_key !== false) {
|
|
$key = $table['keys'][$key_key];
|
|
|
|
$sql = "ALTER TABLE `$table_name` DROP KEY `".$key_name."`;";
|
|
$upgrade_sql[] = $sql;
|
|
|
|
$sql = "ALTER TABLE `$table_name` ADD ".$key['Non_unique']." KEY `".$key_name."` ";
|
|
$sql .= "(`".implode("`,`",$key['columns'])."`)";
|
|
$sql .= ";";
|
|
$upgrade_sql[] = $sql;
|
|
}
|
|
else {
|
|
$result[] = array(9, "Error key_key while changing key '$key_name' in table '".$table['name']."'.");
|
|
}
|
|
}
|
|
else {
|
|
$result[] = array(10,"Error table_key while changing key '$key_name' in table '$table_name'.");
|
|
}
|
|
break;
|
|
case 'Table count':
|
|
// Nothing to do
|
|
break;
|
|
case 'Table type':
|
|
$result[] = array(11,"Upgrade type '".$compare_difference['type']."' on table '".$compare_difference['table']."' not supported.");
|
|
break;
|
|
case 'View definition':
|
|
$drop_view = true;
|
|
// intentionally omitted break;
|
|
case 'View existence':
|
|
$view_name = $compare_difference['in JSON'];
|
|
$view_key = array_search($view_name,array_column($compare_def['views'],'name'));
|
|
|
|
if ($view_key !== false) {
|
|
$view = $compare_def['views'][$view_key];
|
|
|
|
switch ($view['type']) {
|
|
case 'VIEW':
|
|
|
|
if ($drop_view === true) {
|
|
$sql = "DROP VIEW ".$view['name'];
|
|
$upgrade_sql[] = $sql;
|
|
}
|
|
|
|
// Create view in DB
|
|
$upgrade_sql[] = $view['Create'];
|
|
break;
|
|
default:
|
|
$result[] = array(1,"Upgrade type '".$view['type']."' on view '".$view['name']."' not supported.");
|
|
break;
|
|
}
|
|
} else {
|
|
$result[] = array(2,"Error view_key while creating upgrade for view existence `$view_name`.");
|
|
}
|
|
break;
|
|
default:
|
|
$result[] = array(12,"Upgrade type '".$compare_difference['type']."' not supported.");
|
|
break;
|
|
}
|
|
}
|
|
|
|
$upgrade_sql = array_unique($upgrade_sql);
|
|
|
|
if (count($upgrade_sql) > 0) {
|
|
|
|
array_unshift($upgrade_sql,"SET SQL_MODE='ALLOW_INVALID_DATES';","SET SESSION innodb_strict_mode=OFF;");
|
|
}
|
|
|
|
|
|
return($result);
|
|
}
|