Replace deprecated saveToSql with custom method

app/src/Lib/Util/SchemaManager.php

@@ -31,6 +31,8 @@
 
 use Cake\Console\ConsoleIo;
 
+use Doctrine\DBAL\Exception;
+use Doctrine\DBAL\Platforms\AbstractPlatform;
 use Doctrine\DBAL\Schema\Comparator;
 use Doctrine\DBAL\Schema\Schema;
 use Doctrine\DBAL\Schema\SchemaDiff;
@@ -346,8 +348,11 @@ protected function processSchema(
       // schema file).
       $comparator = new Comparator();
       $schemaDiff = $comparator->compareSchemas($curSchema, $schema);
-
-      $diffSql = $schemaDiff->toSaveSql($this->conn->getDatabasePlatform());
+
+      $diffSql = $this->getAlterSchemaSqlSaveMode(
+        $this->conn->getDatabasePlatform(),
+        $schemaDiff
+      );
 
       // We don't start a transaction since in general we always want to move to
       // the desired state, and if we fail in flight it's probably a bug that
@@ -375,7 +380,7 @@ protected function processSchema(
 
           if($qualifiedTable !== null) {
             // We will skip this index if it's bound to a constraint
-            if($this->io) $this->io->out('Skipping index drop since it is bound to a constraint');
+            if($this->io) $this->io->out('Skipping index:' . $m[1] . ' drop since it is bound to a constraint');
             continue;
           }
         }
@@ -451,4 +456,54 @@ protected function resolvePgConstraintTable(string $constraintName): ?string {
       return null;
     }
   }
-}
+
+
+  /**
+   * Generate non-destructive (save-mode) schema SQL.
+   *
+   * Equivalent to SchemaDiff::_toSql($platform, true).
+   *
+   * - Does NOT drop tables
+   * - Does NOT drop sequences
+   * - Does NOT drop orphaned FKs
+   *
+   * @param AbstractPlatform $platform Database platform abstraction
+   * @param SchemaDiff $diff Schema differences to generate SQL for
+   * @return array Array of SQL statements to execute
+   * @throws Exception
+   * @since  COmanage Registry v5.2.0
+   */
+  protected function getAlterSchemaSqlSaveMode(
+    AbstractPlatform $platform,
+    SchemaDiff $diff
+  ): array {
+    $sql = [];
+
+    // 1) Schemas to create
+    if ($platform->supportsSchemas()) {
+      foreach ($diff->getCreatedSchemas() as $schema) {
+        $sql[] = $platform->getCreateSchemaSQL($schema);
+      }
+    }
+
+    // 2) Sequences (alter + create; no drops in save mode)
+    if ($platform->supportsSequences()) {
+      foreach ($diff->getAlteredSequences() as $sequence) {
+        $sql[] = $platform->getAlterSequenceSQL($sequence);
+      }
+      foreach ($diff->getCreatedSequences() as $sequence) {
+        $sql[] = $platform->getCreateSequenceSQL($sequence);
+      }
+    }
+
+    // 3) Tables (create only; no drops in save mode)
+    $sql = array_merge($sql, $platform->getCreateTablesSQL($diff->getCreatedTables()));
+
+    // 4) Alter existing tables (may emit FK drops/adds as required for alterations)
+    foreach ($diff->getAlteredTables() as $tableDiff) {
+      $sql = array_merge($sql, $platform->getAlterTableSQL($tableDiff));
+    }
+
+    return $sql;
+  }
+}