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Add a unique constrain in the tables in dblayer. Block the creation/update if the constrain is forced.

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git-svn-id: https://svn.fournier38.fr/svn/ProgSVN/trunk@1232 bf3deb0d-5f1a-0410-827f-c0cc1f45334c
This commit is contained in:
Dominique Fournier
2014-03-22 14:57:42 +00:00
parent 4fa807a992
commit 9460c245ef
1 changed files with 88 additions and 9 deletions
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97
dblayer.php
View File

@@ -18,6 +18,7 @@ To use it, extends in your code this class, and define the attributes :
);
- protected $primary = "id" ; the primary key of the table (in text). Actually
the dbLayer abstraction don't supports primary key on multiples columns
- protected $unique = array ("column", array ("column1", "column2");)
Optionnaly, you can add the
- protected $debug = TRUE : enable the debug on screen (NOT FOR PROD !!)
@@ -28,6 +29,7 @@ class dblayer extends PDO
{
protected $fields = array ();
protected $primary = null;
protected $unique = null;
protected $db = null;
public $debug = FALSE;
/** Return all the tables available in the database */
@@ -36,7 +38,8 @@ class dblayer extends PDO
$driver = $this->getAttribute(PDO::ATTR_DRIVER_NAME);
$rc = @include_once ("dbLayer".ucfirst ($driver).".php");
if ($rc === FALSE)
throw new Exception ("dbLayer driver $driver not available");
throw new Exception (sprintf (_("dbLayer driver %s not available"),
$driver), 500);
}
// TODO !!
@@ -63,9 +66,14 @@ class dblayer extends PDO
function create ($datas)
{
if ($this->db === null)
throw new Exception ("Database not connected");
throw new Exception (_("Database not connected"), 500);
if ($this->unique === null)
throw new Exception (_("Unique fields of table are not defined"), 500);
if (!is_array ($datas))
throw new Exception ("The datas provided to create are not array");
throw new Exception (_("The datas provided to create are not array"),
405);
if (!in_array ($this->primary, $this->unique))
$this->unique[] = $this->primary;
$datasOK = array ();
// Check for missing parameters
foreach ($this->fields as $key=>$params)
@@ -73,12 +81,43 @@ class dblayer extends PDO
if (in_array ("autoincrement", $params))
$datas[$key] = null;
if (in_array ("not null", $params) && !array_key_exists ($key, $datas))
throw new Exception ("Mandatory field '$key' not provided");
throw new Exception ("Mandatory field '$key' not provided", 405);
// TODO : Check for type inconsistancies before create $datasOK
if (array_key_exists ($key, $datas))
$datasOK[$key] = $datas[$key];
}
// Check if the unique constrain is valid before doing the insertion
foreach ($this->unique as $columns)
{
if (is_array ($columns))
{
$select = array ();
foreach ($columns as $col)
{
if (!array_key_exists ($col, $datasOK)) continue;
$select[] = array ($col, $datasOK[$col]);
}
$rc = $this->read ($select, array ($this->primary));
if (count ($rc) > 0)
throw new Exception (sprintf (
_("The provided value for columns '%s' already exists"),
implode (",", $columns)), 405);
}
else
{
if (!array_key_exists ($columns, $datasOK)) continue;
$rc = $this->read (array (array ($columns, $datasOK[$columns])),
array ($this->primary));
if (count ($rc) > 0)
throw new Exception (sprintf (
_("The provided value for column '%s' already exists"),
$columns), 405);
}
}
// TODO : Check if the foreign keys constrains are valid before doing the
// insertion
$req = "INSERT INTO `".$this->table."` ";
$req .= "(".implode (",", array_keys ($datasOK)).")";
$req .= " VALUES ";
@@ -97,7 +136,7 @@ class dblayer extends PDO
elseif ($this->fields[$key][0] === "datetime")
$st->bindValue (":$key", $val, PDO::PARAM_STR);
else
throw new Exception ("TO BE DEVELOPPED : ".$this->fields[$key][0]);
throw new Exception ("TO BE DEVELOPPED : ".$this->fields[$key][0], 500);
}
$st->execute ();
@@ -116,13 +155,22 @@ class dblayer extends PDO
function read ($select=null, $display=null, $order=null)
{
if ($this->db === null)
throw new Exception ("Database not connected");
throw new Exception (_("Database not connected"), 500);
if ($select !== null && !is_array ($select))
throw new Exception (_("Select information provided is not an array"),
405);
if ($display !== null && !is_array ($display))
throw new Exception (_("Display information provided is not an array"),
405);
if ($order !== null && !is_array ($order))
throw new Exception (_("Order information provided is not an array"),
405);
if ($display !== null)
{
foreach ($display as $f)
{
if (!in_array ($f, array_keys ($this->fields)))
throw new Exception ("Field $f not allowed");
throw new Exception (sprintf (_("Field %s not allowed"), $f), 506);
}
}
$req = "SELECT ";
@@ -180,7 +228,7 @@ class dblayer extends PDO
function update ($updatekey, $datas)
{
if ($this->db === null)
throw new Exception ("Database not connected");
throw new Exception (_("Database not connected"), 500);
$datasOK = array ();
// Check for missing parameters
foreach ($this->fields as $key=>$params)
@@ -192,6 +240,36 @@ class dblayer extends PDO
if (count ($datasOK) === 0)
throw new Exception (_("Don't receive any field to display"), 501);
// Check if the unique constrain is valid before doing the insertion
foreach ($this->unique as $columns)
{
if (is_array ($columns))
{
$select = array ();
foreach ($columns as $col)
{
if (!array_key_exists ($col, $datasOK)) continue;
$select[] = array ($col, $datasOK[$col]);
}
$rc = $this->read ($select, array ($this->primary));
if (count ($rc) > 0)
throw new Exception (sprintf (
_("The provided value for columns '%s' already exists"),
implode (",", $columns)), 405);
}
else
{
if (!array_key_exists ($columns, $datasOK)) continue;
$rc = $this->read (array (array ($columns, $datasOK[$columns])),
array ($this->primary));
if (count ($rc) > 0)
throw new Exception (sprintf (
_("The provided value for column '%s' already exists"),
$columns), 405);
}
}
// TODO : Check if the foreign keys constrains are valid before doing the
$req = "UPDATE `".$this->table."` SET ";
$i = 0;
foreach ($datasOK as $key=>$val)
@@ -219,7 +297,7 @@ class dblayer extends PDO
elseif ($this->fields[$key][0] === "datetime")
$st->bindValue (":$key", $val, PDO::PARAM_STR);
else
throw new Exception ("TO BE DEVELOPPED : ".$this->fields[$key][0]);
throw new Exception ("TO BE DEVELOPPED : ".$this->fields[$key][0], 500);
}
$st->execute ();
@@ -269,6 +347,7 @@ class zone extends dbLayer
"closedate"=>array ("datetime"),
);
protected $primary = "id";
protected $unique = array ("id", array ("zone", "viewname"));
}
ini_set ("date.timezone", "Europe/Paris");