[BUGFIX] Fix issue #35

Add a.attisdropped = false flag to compile columns sql to fix the output of Schema::getColumns().
Add custom cockroach db driver for loading the custom cockroach schema manager to fix renaming issue #35

Author: Vision42

src/CockroachDbConnection.php

@@ -4,10 +4,10 @@
 
 use Illuminate\Database\ConnectionInterface;
 use Illuminate\Database\Grammar as BaseGrammar;
-use Illuminate\Database\PDO\PostgresDriver;
 use Illuminate\Database\PostgresConnection;
 use Illuminate\Filesystem\Filesystem;
 use YlsIdeas\CockroachDb\Builder\CockroachDbBuilder as DbBuilder;
+use YlsIdeas\CockroachDb\Driver\CockroachDBDriver;
 use YlsIdeas\CockroachDb\Processor\CockroachDbProcessor as DbProcessor;
 use YlsIdeas\CockroachDb\Query\CockroachGrammar as QueryGrammar;
 use YlsIdeas\CockroachDb\Schema\CockroachGrammar as SchemaGrammar;
@@ -76,7 +76,7 @@ protected function getDefaultPostProcessor(): DbProcessor
      */
     protected function getDoctrineDriver()
     {
-        return new PostgresDriver();
+        return new CockroachDBDriver();
     }
 
     /**

src/Driver/CockroachDBDriver.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace YlsIdeas\CockroachDb\Driver;
+
+use Doctrine\DBAL\Connection;
+use Doctrine\DBAL\Platforms\AbstractPlatform;
+use Doctrine\DBAL\Schema\AbstractSchemaManager;
+use Illuminate\Database\PDO\PostgresDriver;
+use YlsIdeas\CockroachDb\Schema\CockroachSchemaManager;
+
+class CockroachDBDriver extends PostgresDriver
+{
+    public function getSchemaManager(Connection $conn, AbstractPlatform $platform): AbstractSchemaManager
+    {
+        return new CockroachSchemaManager($conn, $platform);
+    }
+}

src/Schema/CockroachGrammar.php

@@ -68,4 +68,20 @@ public function compileDropUnique(Blueprint $blueprint, Fluent $command)
 
         return "drop index {$this->wrapTable($blueprint)}@{$index} cascade";
     }
+
+    public function compileColumns($database, $schema, $table): string
+    {
+        return sprintf(
+            'select a.attname as name, t.typname as type_name, format_type(a.atttypid, a.atttypmod) as type, '
+            .'(select tc.collcollate from pg_catalog.pg_collation tc where tc.oid = a.attcollation) as collation, '
+            .'not a.attnotnull as nullable, '
+            .'(select pg_get_expr(adbin, adrelid) from pg_attrdef where c.oid = pg_attrdef.adrelid and pg_attrdef.adnum = a.attnum) as default, '
+            .'col_description(c.oid, a.attnum) as comment '
+            .'from pg_attribute a, pg_class c, pg_type t, pg_namespace n '
+            .'where c.relname = %s and n.nspname = %s and a.attnum > 0 and a.attrelid = c.oid and a.atttypid = t.oid and n.oid = c.relnamespace and a.attisdropped = false '
+            .'order by a.attnum',
+            $this->quoteString($table),
+            $this->quoteString($schema)
+        );
+    }
 }

src/Schema/CockroachSchemaManager.php

@@ -0,0 +1,93 @@
+<?php
+
+namespace YlsIdeas\CockroachDb\Schema;
+
+use Doctrine\DBAL\Result;
+use Doctrine\DBAL\Schema\Identifier;
+use Doctrine\DBAL\Schema\PostgreSQLSchemaManager;
+
+class CockroachSchemaManager extends PostgreSQLSchemaManager
+{
+    protected function selectTableColumns(string $databaseName, ?string $tableName = null): Result
+    {
+        $sql = 'SELECT';
+
+        if ($tableName === null) {
+            $sql .= ' c.relname AS table_name, n.nspname AS schema_name,';
+        }
+
+        $sql .= <<<'SQL'
+                        a.attnum,
+                        quote_ident(a.attname) AS field,
+                        t.typname AS type,
+                        format_type(a.atttypid, a.atttypmod) AS complete_type,
+                        (SELECT tc.collcollate FROM pg_catalog.pg_collation tc WHERE tc.oid = a.attcollation) AS collation,
+                        (SELECT t1.typname FROM pg_catalog.pg_type t1 WHERE t1.oid = t.typbasetype) AS domain_type,
+                        (SELECT format_type(t2.typbasetype, t2.typtypmod) FROM
+                          pg_catalog.pg_type t2 WHERE t2.typtype = 'd' AND t2.oid = a.atttypid) AS domain_complete_type,
+                        a.attnotnull AS isnotnull,
+                        (SELECT 't'
+                         FROM pg_index
+                         WHERE c.oid = pg_index.indrelid
+                            AND pg_index.indkey[0] = a.attnum
+                            AND pg_index.indisprimary = 't'
+                        ) AS pri,
+                        (SELECT pg_get_expr(adbin, adrelid)
+                         FROM pg_attrdef
+                         WHERE c.oid = pg_attrdef.adrelid
+                            AND pg_attrdef.adnum=a.attnum
+                        ) AS default,
+                        (SELECT pg_description.description
+                            FROM pg_description WHERE pg_description.objoid = c.oid AND a.attnum = pg_description.objsubid
+                        ) AS comment
+                        FROM pg_attribute a
+                            INNER JOIN pg_class c
+                                ON c.oid = a.attrelid
+                            INNER JOIN pg_type t
+                                ON t.oid = a.atttypid
+                            INNER JOIN pg_namespace n
+                                ON n.oid = c.relnamespace
+                            LEFT JOIN pg_depend d
+                                ON d.objid = c.oid
+                                    AND d.deptype = 'e'
+                                    AND d.classid = (SELECT oid FROM pg_class WHERE relname = 'pg_class')
+            SQL;
+
+        $conditions = array_merge([
+            'a.attnum > 0',
+            "c.relkind = 'r'",
+            'd.refobjid IS NULL',
+            'a.attisdropped = false',
+        ], $this->buildQueryConditions($tableName));
+
+        $sql .= ' WHERE ' . implode(' AND ', $conditions) . ' ORDER BY a.attnum';
+
+        return $this->_conn->executeQuery($sql);
+    }
+
+    /**
+     * @param string|null $tableName
+     *
+     * @return list<string>
+     */
+    private function buildQueryConditions($tableName): array
+    {
+        $conditions = [];
+
+        if ($tableName !== null) {
+            if (strpos($tableName, '.') !== false) {
+                [$schemaName, $tableName] = explode('.', $tableName);
+                $conditions[] = 'n.nspname = ' . $this->_platform->quoteStringLiteral($schemaName);
+            } else {
+                $conditions[] = 'n.nspname = ANY(current_schemas(false))';
+            }
+
+            $identifier = new Identifier($tableName);
+            $conditions[] = 'c.relname = ' . $this->_platform->quoteStringLiteral($identifier->getName());
+        }
+
+        $conditions[] = "n.nspname NOT IN ('pg_catalog', 'information_schema', 'pg_toast')";
+
+        return $conditions;
+    }
+}