add functions from 5.1-support branch

src/Firebird/Connection.php

@@ -153,4 +153,28 @@ public function table($table)
 
     return $query->from($table);
   }
+
+  public function beginTransaction()
+  {
+    if ( $this->transactions == 0 && $this->pdo->getAttribute(PDO::ATTR_AUTOCOMMIT) == 1 ) {
+      $this->pdo->setAttribute(PDO::ATTR_AUTOCOMMIT, 0);
+    }
+    parent::beginTransaction();
+  }
+
+  public function commit()
+  {
+    parent::commit();
+    if ( $this->transactions == 0 && $this->pdo->getAttribute(PDO::ATTR_AUTOCOMMIT) == 0 ) {
+      $this->pdo->setAttribute(PDO::ATTR_AUTOCOMMIT, 1);
+    }
+  }
+
+  public function rollBack()
+  {
+    parent::rollBack();
+    if ( $this->transactions == 0 && $this->pdo->getAttribute(PDO::ATTR_AUTOCOMMIT) == 0 ) {
+      $this->pdo->setAttribute(PDO::ATTR_AUTOCOMMIT, 1);
+    }
+  }
 }

src/Firebird/Query/Grammars/FirebirdGrammar.php

@@ -106,4 +106,21 @@ protected function compileOffset(Builder $query, $limit)
     return 'skip '.(int) $limit;
   }
 
-}
+  /**
+   * Compile an insert and get ID statement into SQL.
+   *
+   * @param  \Illuminate\Database\Query\Builder  $query
+   * @param  array   $values
+   * @param  string  $sequence
+   * @return string
+   */
+  public function compileInsertGetId(Builder $query, $values, $sequence)
+  {
+    if (is_null($sequence)) {
+      $sequence = 'id';
+    }
+
+    return $this->compileInsert($query, $values).' returning '.$this->wrap($sequence);
+  }
+
+}

src/Firebird/Query/Processors/FirebirdProcessor.php

@@ -1,7 +1,46 @@
 <?php namespace Firebird\Query\Processors;
 
 use Illuminate\Database\Query\Processors\Processor;
+use Illuminate\Database\Query\Builder;
 
 class FirebirdProcessor extends Processor {
+  /**
+   * Process an "insert get ID" query.
+   *
+   * @param  \Illuminate\Database\Query\Builder  $query
+   * @param  string  $sql
+   * @param  array   $values
+   * @param  string  $sequence
+   * @return int
+   */
+  public function processInsertGetId(Builder $query, $sql, $values, $sequence = null)
+  {
+    $results = $query->getConnection()->selectFromWriteConnection($sql, $values);
 
-}
+    $sequence = $sequence ?: 'id';
+
+    $result = (array) $results[0];
+
+    $id = $result[$sequence];
+
+    return is_numeric($id) ? (int) $id : $id;
+  }
+
+  /**
+   * Process the results of a column listing query.
+   *
+   * @param  array  $results
+   * @return array
+   */
+  public function processColumnListing($results)
+  {
+    $mapping = function ($r) {
+      $r = (object) $r;
+
+      return trim($r->{'RDB$FIELD_NAME'});
+    };
+
+    return array_map($mapping, $results);
+  }
+
+}

src/Firebird/Schema/Grammars/FirebirdGrammar.php

@@ -31,6 +31,17 @@ public function compileTableExists()
     return "SELECT RDB\$RELATION_NAME FROM RDB\$RELATIONS WHERE RDB\$RELATION_NAME = ?";
   }
 
+  /**
+   * Compile the query to determine the list of columns.
+   *
+   * @param  string  $table
+   * @return string
+   */
+  public function compileColumnExists($table)
+  {
+    return "SELECT RDB\$RELATION_FIELDS.RDB\$FIELD_NAME FROM RDB\$RELATION_FIELDS WHERE RDB\$RELATION_FIELDS.RDB\$RELATION_NAME = '$table' ";
+  }
+
   /**
    * Compile a create table command.
    *