From 02b8714b96070188030661e67a91678af1b64802 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jan=20Kucha=C5=99?= <honza.kuchar@grifart.cz>
Date: Sat, 21 May 2016 12:42:05 +0200
Subject: [PATCH] Added more docblocks for interfaces + removed unused uses
---
src/PostgresDriver/ArrayCursorDriver.php | 21 ++--
src/PostgresDriver/Cursor.php | 19 ++--
src/PostgresDriver/CursorPosition.php | 2 +
src/PostgresDriver/ICursor.php | 31 +++---
src/PostgresDriver/ICursorDriver.php | 50 +++++++---
src/PostgresDriver/ICursorFactory.php | 11 ---
src/PostgresDriver/PostgresCursorDriver.php | 16 +--
...rFactory.php => PostgresCursorFactory.php} | 8 +-
src/PostgresDriver/SemanticCursor.php | 97 ++++++++++---------
src/PostgresDriver/TrackedCursor.php | 34 +++----
tests/Store/PostgresDriver/CursorTest.phpt | 4 +-
.../PostgresDriver/PostgresCursorTest.phpt | 7 +-
.../SemanticCursorIntegration.phpt | 2 +-
.../PostgresDriver/TrackedCursorTest.phpt | 4 +-
14 files changed, 165 insertions(+), 141 deletions(-)
delete mode 100644 src/PostgresDriver/ICursorFactory.php
rename src/PostgresDriver/{CursorFactory.php => PostgresCursorFactory.php} (85%)
diff --git a/src/PostgresDriver/ArrayCursorDriver.php b/src/PostgresDriver/ArrayCursorDriver.php
index 41ad9ea..b276051 100644
--- a/src/PostgresDriver/ArrayCursorDriver.php
+++ b/src/PostgresDriver/ArrayCursorDriver.php
@@ -5,9 +5,6 @@
namespace Grifart\Mappi\Store\PostgresDriver;
-use Dibi\Connection;
-use Dibi\Row;
-
/**
* Array Cursor simulates scrolling cursor as implemented in PostgreSQL 9.5.
*
@@ -97,10 +94,10 @@ class ArrayCursorDriver implements ICursorDriver
return !!$this->getCurrentValue($name);
}
- public function moveBy(string $name, int $rows) : bool
+ public function moveBy(string $name, int $offset) : bool
{
$i = $this->getCurrentIndex($name);
- $indexFromLeft = $i + $rows;
+ $indexFromLeft = $i + $offset;
$this->normalizeIndex($name, $indexFromLeft);
$this->moveTo($name, $indexFromLeft);
return !!$this->getCurrentValue($name);
@@ -108,20 +105,20 @@ class ArrayCursorDriver implements ICursorDriver
// ----------------- FETCH ---------------------
- public function fetchRange(string $name, int $rows) : array
+ public function fetchRange(string $name, int $offset) : array
{
$currentKey = $this->getCurrentIndex($name);
- if($rows === self::FETCH_FOREGOING) {
+ if($offset === self::FETCH_FOREGOING) {
$finalKey = PHP_INT_MIN;
- } elseif ($rows === self::FETCH_REMAINING) {
+ } elseif ($offset === self::FETCH_REMAINING) {
$finalKey = PHP_INT_MAX;
} else {
- $finalKey = $currentKey + $rows;
+ $finalKey = $currentKey + $offset;
}
$this->normalizeIndex($name, $finalKey);
$data = [];
- if($rows === 0) {
+ if($offset === 0) {
$v = $this->getCurrentValue($name);
if($v !== NULL) {
$data[] = ["n" => $this->getCurrentValue($name)];
@@ -161,9 +158,9 @@ class ArrayCursorDriver implements ICursorDriver
return $data[0];
}
- public function fetchOneBy(string $name, int $rows)
+ public function fetchOneBy(string $name, int $offset)
{
- $this->moveBy($name, $rows);
+ $this->moveBy($name, $offset);
$data = $this->fetchRange($name, 0);
if(count($data) === 0) {
return NULL;
diff --git a/src/PostgresDriver/Cursor.php b/src/PostgresDriver/Cursor.php
index 8de0357..5d849c8 100644
--- a/src/PostgresDriver/Cursor.php
+++ b/src/PostgresDriver/Cursor.php
@@ -5,9 +5,6 @@
namespace Grifart\Mappi\Store\PostgresDriver;
-use Dibi\Connection;
-use Dibi\Row;
-
/**
* PostgreSQL cursor driver
*
@@ -71,22 +68,22 @@ final class Cursor implements ICursor
$this->headOnRecord = $this->driver->moveFromEndTo($this->name, $index);
}
- public function moveBy(int $rows)
+ public function moveBy(int $offset)
{
- $this->headOnRecord = $this->driver->moveBy($this->name, $rows);
+ $this->headOnRecord = $this->driver->moveBy($this->name, $offset);
}
// ----------------- FETCH ---------------------
- public function fetchRange(int $rows) : array
+ public function fetchRange(int $offset) : array
{
- $recs = $this->driver->fetchRange($this->name, $rows);
+ $recs = $this->driver->fetchRange($this->name, $offset);
- if ($rows === 0) { // current row
+ if ($offset === 0) { // current row
$this->headOnRecord = count($recs) === 1;
} else {
// todo: test this properly!!
- $this->headOnRecord = count($recs) === abs($rows);
+ $this->headOnRecord = count($recs) === abs($offset);
}
return $recs;
}
@@ -98,9 +95,9 @@ final class Cursor implements ICursor
return $row;
}
- public function fetchOneBy(int $rows)
+ public function fetchOneBy(int $offset)
{
- $row = $this->driver->fetchOneBy($this->name, $rows);
+ $row = $this->driver->fetchOneBy($this->name, $offset);
$this->headOnRecord = $row !== NULL;
return $row;
}
diff --git a/src/PostgresDriver/CursorPosition.php b/src/PostgresDriver/CursorPosition.php
index b1defb1..f682c48 100644
--- a/src/PostgresDriver/CursorPosition.php
+++ b/src/PostgresDriver/CursorPosition.php
@@ -5,6 +5,8 @@
namespace Grifart\Mappi\Store\PostgresDriver;
+// todo: make this immutable as VOs should be
+
/**
* Value object for TrackedCursor position
*
diff --git a/src/PostgresDriver/ICursor.php b/src/PostgresDriver/ICursor.php
index efda5b2..6c11a89 100644
--- a/src/PostgresDriver/ICursor.php
+++ b/src/PostgresDriver/ICursor.php
@@ -5,7 +5,7 @@
namespace Grifart\Mappi\Store\PostgresDriver;
/**
- * Represents PostgreSQL cursor
+ * Represents cursor
*
* Cursor works same as tape. When you have 3 items on it it has these indexes.
* index: 0 1 2 3 4
@@ -35,12 +35,14 @@ interface ICursor
public function isOnRecord() : bool;
/**
- * @param int $rows
+ * Move cursor by offset
+ * @param int $offset
* @return void
*/
- public function moveBy(int $rows);
+ public function moveBy(int $offset);
/**
+ * Move cursor to absolute position from the beginning
* @param int $index
* @throws CursorException Negative indexes not supported
* @return void
@@ -48,6 +50,7 @@ interface ICursor
public function moveTo(int $index);
/**
+ * Move cursor to absolute position from the end
* @param int $index
* @throws CursorException Negative indexes not supported
* @return mixed
@@ -55,24 +58,28 @@ interface ICursor
public function moveFromEndTo(int $index);
/**
- * Fetch the next/previous count rows. FORWARD 0 re-fetches the current row.
- * @param int $rows
- * @return array
+ * Fetch the next/previous count of rows. If zero given current row is fetched.
+ * Cursor position will be on the last fetched row.
+ * @param int $offset the last row offset
+ * @return array fetched rows
*/
- public function fetchRange(int $rows) : array;
+ public function fetchRange(int $offset) : array;
/**
- * Fetch the count'th row of the query, or the abs(count)'th row from the end if count is negative. Position before first row or after last row if count is out of range; in particular, ABSOLUTE 0 positions before the first row.
- * @param int $index Positive means from left; negative from right
+ * Fetch one row at given position
+ * Cursor position will be on the fetched row.
+ * @param int $index Positive means from the beginning; negative from the end
* @return array|NULL
*/
public function fetchOneAt(int $index);
/**
- * Fetch the count'th succeeding row, or the abs(count)'th prior row if count is negative. RELATIVE 0 re-fetches the current row, if any.
- * @param int $rows
+ * Fetch one row at relative position from current position
+ * Has the same effect like calling moveBy() and then fetch current row
+ * Cursor position will be on the fetched row.
+ * @param int $offset
* @return array|NULL
*/
- public function fetchOneBy(int $rows);
+ public function fetchOneBy(int $offset);
}
\ No newline at end of file
diff --git a/src/PostgresDriver/ICursorDriver.php b/src/PostgresDriver/ICursorDriver.php
index 6d3ab84..6e645a9 100644
--- a/src/PostgresDriver/ICursorDriver.php
+++ b/src/PostgresDriver/ICursorDriver.php
@@ -4,50 +4,74 @@
*/
namespace Grifart\Mappi\Store\PostgresDriver;
+/**
+ * Represents cursor
+ *
+ * Cursor works same as tape. When you have 3 items on it it has these indexes.
+ * index: 0 1 2 3 4
+ * value: - 1 2 3 -
+ * head: ^
+ *
+ * - You have HEAD which you can move around and read records before, after or current.
+ * - You cannot ask for current position.
+ * - You can move to absolute position from left or from right
+ * - You can more relatively to any side
+ * - BEGINNING (0) and END (4) has no value
+ * - Cursor starts at BEGINNING
+ * - When you move too far HEAD will be parked in BEGINNING position or in the END position
+ *
+ * @package Grifart\Mappi\Store\PostgresDriver
+ */
interface ICursorDriver
{
const FETCH_REMAINING = PHP_INT_MAX;
const FETCH_FOREGOING = PHP_INT_MIN;
/**
- * @param string $name Cursor name
+ * Move cursor from the BEGINNING to given position
+ * @param string $name The cursor name
* @param int $index
* @return bool Head on record?
*/
public function moveTo(string $name, int $index) : bool;
/**
- * @param string $name Cursor name
+ * Move cursor from the END to given position
+ * @param string $name The cursor name
* @param int $index
* @return bool Head on record?
*/
public function moveFromEndTo(string $name, int $index) : bool;
/**
- * @param string $name Cursor name
- * @param int $rows
+ * Move cursor from the current position by given offset
+ * @param string $name The cursor name
+ * @param int $offset
* @return bool Head on record?
*/
- public function moveBy(string $name, int $rows) : bool;
+ public function moveBy(string $name, int $offset) : bool;
/**
- * @param string $name Cursor name
- * @param int $rows
+ * Fetch all rows from current position to given offset
+ * @param string $name The cursor name
+ * @param int $offset
* @return array
*/
- public function fetchRange(string $name, int $rows) : array;
+ public function fetchRange(string $name, int $offset) : array;
/**
- * @param string $name
- * @param int $index
+ * Fetch one row at given position
+ * @param string $name The cursor name
+ * @param int $index from the BEGINNING; if negative from the END
* @return array|null
*/
public function fetchOneAt(string $name, int $index);
/**
- * @param string $name
- * @param int $rows
+ * Fetch one row at relative position from current row
+ * @param string $name The cursor name
+ * @param int $offset
* @return array|null
*/
- public function fetchOneBy(string $name, int $rows);
+ public function fetchOneBy(string $name, int $offset);
}
\ No newline at end of file
diff --git a/src/PostgresDriver/ICursorFactory.php b/src/PostgresDriver/ICursorFactory.php
deleted file mode 100644
index d4f7276..0000000
--- a/src/PostgresDriver/ICursorFactory.php
+++ /dev/null
@@ -1,11 +0,0 @@
-<?php declare(strict_types = 1);
-/**
- * This file is part of mappi/store.
- */
-
-namespace Grifart\Mappi\Store\PostgresDriver;
-
-interface ICursorFactory
-{
- public function create(string $sql, bool $scroll) : ICursor;
-}
\ No newline at end of file
diff --git a/src/PostgresDriver/PostgresCursorDriver.php b/src/PostgresDriver/PostgresCursorDriver.php
index 76fea60..5413c48 100644
--- a/src/PostgresDriver/PostgresCursorDriver.php
+++ b/src/PostgresDriver/PostgresCursorDriver.php
@@ -64,22 +64,22 @@ class PostgresCursorDriver implements ICursorDriver
);
}
- public function moveBy(string $name, int $rows) : bool
+ public function moveBy(string $name, int $offset) : bool
{
return !!$this->getConnection()->query(
"MOVE RELATIVE %i IN %n",
- $rows,
+ $offset,
$name
);
}
// ----------------- FETCH ---------------------
- public function fetchRange(string $name, int $rows) : array
+ public function fetchRange(string $name, int $offset) : array
{
- $forward = $rows >= 0;
- $numberOfRowsSQLClause = ($rows === self::FETCH_FOREGOING || $rows === self::FETCH_REMAINING) ?
- "ALL" : abs($rows);
+ $forward = $offset >= 0;
+ $numberOfRowsSQLClause = ($offset === self::FETCH_FOREGOING || $offset === self::FETCH_REMAINING) ?
+ "ALL" : abs($offset);
$recs = $this->connection->query(
$forward ? "FETCH FORWARD %sql FROM %n" : "FETCH BACKWARD %sql FROM %n",
@@ -103,11 +103,11 @@ class PostgresCursorDriver implements ICursorDriver
return $this->convertRow($row);
}
- public function fetchOneBy(string $name, int $rows)
+ public function fetchOneBy(string $name, int $offset)
{
$row = $this->connection->query(
"FETCH RELATIVE %i FROM %n",
- $rows,
+ $offset,
$name
)->fetch();
if($row === FALSE) {
diff --git a/src/PostgresDriver/CursorFactory.php b/src/PostgresDriver/PostgresCursorFactory.php
similarity index 85%
rename from src/PostgresDriver/CursorFactory.php
rename to src/PostgresDriver/PostgresCursorFactory.php
index 63a50f2..b7a1c7c 100644
--- a/src/PostgresDriver/CursorFactory.php
+++ b/src/PostgresDriver/PostgresCursorFactory.php
@@ -7,13 +7,13 @@ namespace Grifart\Mappi\Store\PostgresDriver;
use Dibi\Connection;
-final class CursorFactory
+final class PostgresCursorFactory
{
/** @var Connection */
private $connection;
/**
- * CursorFactory constructor.
+ * PostgresCursorFactory constructor.
* @param Connection $connection
*/
public function __construct(Connection $connection)
@@ -46,6 +46,10 @@ final class CursorFactory
);
}
+ /**
+ * Generate cursor unique name in current transaction
+ * @return string
+ */
private function generateCursorName() : string
{
return uniqid();
diff --git a/src/PostgresDriver/SemanticCursor.php b/src/PostgresDriver/SemanticCursor.php
index 695c678..9fafb78 100644
--- a/src/PostgresDriver/SemanticCursor.php
+++ b/src/PostgresDriver/SemanticCursor.php
@@ -29,50 +29,6 @@ class SemanticCursor implements ICursor
$this->cursor = $cursor;
}
- // ICursor proxy:
-
- public function getName() : string
- {
- return $this->cursor->getName();
- }
-
- public function isOnRecord() : bool
- {
- return $this->cursor->isOnRecord();
- }
-
- public function moveTo(int $index)
- {
- $this->cursor->moveTo($index);
- }
-
- public function moveFromEndTo(int $index)
- {
- return $this->cursor->moveFromEndTo($index);
- }
-
- public function moveBy(int $rows)
- {
- $this->cursor->moveBy($rows);
- }
-
- public function fetchRange(int $rows) : array
- {
- return $this->cursor->fetchRange($rows);
- }
-
- public function fetchOneAt(int $index)
- {
- return $this->cursor->fetchOneAt($index);
- }
-
- public function fetchOneBy(int $rows)
- {
- return $this->cursor->fetchOneBy($rows);
- }
-
- // The semantic extension:
-
/**
* Move cursor on the last row
* @see fetchCurrent()
@@ -230,11 +186,62 @@ class SemanticCursor implements ICursor
/**
* @param array $row
- * @return mixed The value
+ * @return mixed The extracted value
*/
private function extractFirstColumnFromRow(array $row)
{
return reset($row);
}
+
+
+ // The ICursor proxy:
+
+ /** {@inheritdoc} */
+ public function getName() : string
+ {
+ return $this->cursor->getName();
+ }
+
+ /** {@inheritdoc} */
+ public function isOnRecord() : bool
+ {
+ return $this->cursor->isOnRecord();
+ }
+
+ /** {@inheritdoc} */
+ public function moveTo(int $index)
+ {
+ $this->cursor->moveTo($index);
+ }
+
+ /** {@inheritdoc} */
+ public function moveFromEndTo(int $index)
+ {
+ return $this->cursor->moveFromEndTo($index);
+ }
+
+ /** {@inheritdoc} */
+ public function moveBy(int $offset)
+ {
+ $this->cursor->moveBy($offset);
+ }
+
+ /** {@inheritdoc} */
+ public function fetchRange(int $offset) : array
+ {
+ return $this->cursor->fetchRange($offset);
+ }
+
+ /** {@inheritdoc} */
+ public function fetchOneAt(int $index)
+ {
+ return $this->cursor->fetchOneAt($index);
+ }
+
+ /** {@inheritdoc} */
+ public function fetchOneBy(int $offset)
+ {
+ return $this->cursor->fetchOneBy($offset);
+ }
}
\ No newline at end of file
diff --git a/src/PostgresDriver/TrackedCursor.php b/src/PostgresDriver/TrackedCursor.php
index 5e160a6..d086671 100644
--- a/src/PostgresDriver/TrackedCursor.php
+++ b/src/PostgresDriver/TrackedCursor.php
@@ -87,38 +87,38 @@ class TrackedCursor implements ICursor
throw CursorException::cursorPosition_unknownError();
}
- public function moveBy(int $rows)
+ public function moveBy(int $offset)
{
// todo: use MOVE FORWARD n IN ... which returns number of rows read
- $this->cursor->moveBy($rows);
+ $this->cursor->moveBy($offset);
if ($this->cursor->isOnRecord()) {
- $this->position->movePositionBy($rows);
+ $this->position->movePositionBy($offset);
return;
}
- if ($rows < 0) {
+ if ($offset < 0) {
$this->position->setPositionFromLeft(0); // BEGINNING
return;
}
- if ($rows > 0) {
+ if ($offset > 0) {
$this->position->setPositionFromRight(0); // END
return;
}
- if ($rows === 0) {
+ if ($offset === 0) {
return; // already on one of ends
}
throw CursorException::cursorPosition_unknownError();
}
- public function fetchRange(int $rows): array
+ public function fetchRange(int $offset): array
{
- $result = $this->cursor->fetchRange($rows);
- if($rows === 0) { // zero does not move cursor
+ $result = $this->cursor->fetchRange($offset);
+ if($offset === 0) { // zero does not move cursor
return $result;
}
- $forward = $rows > 0;
+ $forward = $offset > 0;
$count = count($result);
- $reachedEnd = $count < abs($rows);
+ $reachedEnd = $count < abs($offset);
if(!$reachedEnd) {
$this->position->movePositionBy(
$count * ($forward ? 1 : -1)
@@ -164,23 +164,23 @@ class TrackedCursor implements ICursor
throw CursorException::cursorPosition_unknownError();
}
- public function fetchOneBy(int $rows)
+ public function fetchOneBy(int $offset)
{ // todo: content tests
- $row = $this->cursor->fetchOneBy($rows);
+ $row = $this->cursor->fetchOneBy($offset);
if ($row !== NULL) {
- $this->position->movePositionBy($rows);
+ $this->position->movePositionBy($offset);
return $row;
}
- if ($rows < 0) {
+ if ($offset < 0) {
$this->position->setPositionFromLeft(0); // BEGINNING
return NULL;
}
- if ($rows > 0) {
+ if ($offset > 0) {
$this->position->setPositionFromRight(0); // END
return NULL;
}
- if ($rows === 0) {
+ if ($offset === 0) {
return NULL; // already on one of ends
}
diff --git a/tests/Store/PostgresDriver/CursorTest.phpt b/tests/Store/PostgresDriver/CursorTest.phpt
index 5ab1fb8..2a1b9f1 100644
--- a/tests/Store/PostgresDriver/CursorTest.phpt
+++ b/tests/Store/PostgresDriver/CursorTest.phpt
@@ -7,7 +7,7 @@ namespace Grifart\Mappi\Tests\Store\Store\PostgresDriver;
use Grifart\Mappi\Store\PostgresDriver\ArrayCursorDriver;
use Grifart\Mappi\Store\PostgresDriver\Cursor;
-use Grifart\Mappi\Store\PostgresDriver\CursorFactory;
+use Grifart\Mappi\Store\PostgresDriver\PostgresCursorFactory;
use Grifart\Mappi\Store\PostgresDriver\ICursor;
require_once __DIR__ . "/../../bootstrap.php";
@@ -23,7 +23,7 @@ class CursorTest extends ICursorTest
//global $connection, $SQL_thousandRowsAscending;
//$connection->begin();
- //$factory = new CursorFactory($connection);
+ //$factory = new PostgresCursorFactory($connection);
//$this->uut = $factory->create($SQL_thousandRowsAscending, true);
$driver = new ArrayCursorDriver();
$driver->createTestCursor("test", 1000);
diff --git a/tests/Store/PostgresDriver/PostgresCursorTest.phpt b/tests/Store/PostgresDriver/PostgresCursorTest.phpt
index ada9cac..851939f 100644
--- a/tests/Store/PostgresDriver/PostgresCursorTest.phpt
+++ b/tests/Store/PostgresDriver/PostgresCursorTest.phpt
@@ -6,11 +6,8 @@
namespace Grifart\Mappi\Tests\Store\Store\PostgresDriver;
use Dibi\DriverException;
-use Grifart\Mappi\Store\PostgresDriver\ArrayCursorDriver;
-use Grifart\Mappi\Store\PostgresDriver\Cursor;
-use Grifart\Mappi\Store\PostgresDriver\CursorFactory;
+use Grifart\Mappi\Store\PostgresDriver\PostgresCursorFactory;
use Grifart\Mappi\Store\PostgresDriver\ICursor;
-use Grifart\Mappi\Store\PostgresDriver\ICursorDriver;
use Tester\Environment;
require_once __DIR__ . "/../../bootstrap.php";
@@ -27,7 +24,7 @@ class PostgresCursorTest extends ICursorTest
try{
$connection->begin();
- $factory = new CursorFactory($connection);
+ $factory = new PostgresCursorFactory($connection);
$this->uut = $factory->create($SQL_thousandRowsAscending, true);
} catch (DriverException $e) {
Environment::skip("It looks like you haven't properly set-up dibi connection to PostgreSQL. Check tests/bootstrap.php");
diff --git a/tests/Store/PostgresDriver/SemanticCursorIntegration.phpt b/tests/Store/PostgresDriver/SemanticCursorIntegration.phpt
index 137534f..690877e 100644
--- a/tests/Store/PostgresDriver/SemanticCursorIntegration.phpt
+++ b/tests/Store/PostgresDriver/SemanticCursorIntegration.phpt
@@ -7,7 +7,7 @@ namespace Grifart\Mappi\Tests\Store\Store\PostgresDriver;
use Grifart\Mappi\Store\PostgresDriver\ArrayCursorDriver;
use Grifart\Mappi\Store\PostgresDriver\Cursor;
-use Grifart\Mappi\Store\PostgresDriver\CursorFactory;
+use Grifart\Mappi\Store\PostgresDriver\PostgresCursorFactory;
use Grifart\Mappi\Store\PostgresDriver\SemanticCursor;
use Mockery;
diff --git a/tests/Store/PostgresDriver/TrackedCursorTest.phpt b/tests/Store/PostgresDriver/TrackedCursorTest.phpt
index 0574378..d9b8d04 100644
--- a/tests/Store/PostgresDriver/TrackedCursorTest.phpt
+++ b/tests/Store/PostgresDriver/TrackedCursorTest.phpt
@@ -10,7 +10,7 @@ namespace Grifart\Mappi\Tests\Store\Store\PostgresDriver;
use Grifart\Mappi\Store\PostgresDriver\ArrayCursorDriver;
use Grifart\Mappi\Store\PostgresDriver\Cursor;
-use Grifart\Mappi\Store\PostgresDriver\CursorFactory;
+use Grifart\Mappi\Store\PostgresDriver\PostgresCursorFactory;
use Grifart\Mappi\Store\PostgresDriver\CursorPosition;
use Grifart\Mappi\Store\PostgresDriver\ICursor;
use Grifart\Mappi\Store\PostgresDriver\TrackedCursor;
@@ -33,7 +33,7 @@ class TrackedCursorTest extends ICursorTest
// global $connection, $SQL_thousandRowsAscending;
// $connection->begin();
-// $factory = new CursorFactory($connection);
+// $factory = new PostgresCursorFactory($connection);
$driver = new ArrayCursorDriver();
$driver->createTestCursor("test", 1000);
$cursor = new Cursor(
--
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