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DibiTranslator: uses DibiLazyStorage as caching layer over delimite()

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This commit is contained in:
David Grudl
2010-08-03 07:19:29 +02:00
parent 84e0f0ecc1
commit c93137340e
1 changed files with 17 additions and 18 deletions
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35
dibi/libs/DibiTranslator.php
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@@ -47,14 +47,15 @@ final class DibiTranslator extends DibiObject
/** @var int */
private $offset;
/** @var array */
private $dCache;
/** @var DibiLazyStorage */
private $identifiers;
public function __construct(IDibiDriver $driver)
{
$this->driver = $driver;
$this->identifiers = new DibiLazyStorage(array($this, 'delimite'));
}
@@ -209,7 +210,7 @@ final class DibiTranslator extends DibiObject
foreach ($value as $k => $v) {
if (is_string($k)) {
$pair = explode('%', $k, 2); // split into identifier & modifier
$k = $this->delimite($pair[0]) . ' ';
$k = $this->identifiers->{$pair[0]} . ' ';
if (!isset($pair[1])) {
$v = $this->formatValue($v, FALSE);
$vx[] = $k . ($v === 'NULL' ? 'IS ' : '= ') . $v;
@@ -231,10 +232,10 @@ final class DibiTranslator extends DibiObject
case 'n': // key, key, ... identifier names
foreach ($value as $k => $v) {
if (is_string($k)) {
$vx[] = $this->delimite($k) . (empty($v) ? '' : ' AS ' . $v);
$vx[] = $this->identifiers->$k . (empty($v) ? '' : ' AS ' . $v);
} else {
$pair = explode('%', $v, 2); // split into identifier & modifier
$vx[] = $this->delimite($pair[0]);
$vx[] = $this->identifiers->{$pair[0]};
}
}
return implode(', ', $vx);
@@ -243,7 +244,7 @@ final class DibiTranslator extends DibiObject
case 'a': // key=val, key=val, ...
foreach ($value as $k => $v) {
$pair = explode('%', $k, 2); // split into identifier & modifier
$vx[] = $this->delimite($pair[0]) . '='
$vx[] = $this->identifiers->{$pair[0]} . '='
. $this->formatValue($v, isset($pair[1]) ? $pair[1] : (is_array($v) ? 'ex' : FALSE));
}
return implode(', ', $vx);
@@ -261,7 +262,7 @@ final class DibiTranslator extends DibiObject
case 'v': // (key, key, ...) VALUES (val, val, ...)
foreach ($value as $k => $v) {
$pair = explode('%', $k, 2); // split into identifier & modifier
$kx[] = $this->delimite($pair[0]);
$kx[] = $this->identifiers->{$pair[0]};
$vx[] = $this->formatValue($v, isset($pair[1]) ? $pair[1] : (is_array($v) ? 'ex' : FALSE));
}
return '(' . implode(', ', $kx) . ') VALUES (' . implode(', ', $vx) . ')';
@@ -283,7 +284,7 @@ final class DibiTranslator extends DibiObject
}
$pair = explode('%', $k, 2); // split into identifier & modifier
$kx[] = $this->delimite($pair[0]);
$kx[] = $this->identifiers->{$pair[0]};
foreach ($v as $k2 => $v2) {
$vx[$k2][] = $this->formatValue($v2, isset($pair[1]) ? $pair[1] : (is_array($v2) ? 'ex' : FALSE));
}
@@ -299,9 +300,9 @@ final class DibiTranslator extends DibiObject
$vx[] = $this->formatValue($v, 'ex');
} elseif (is_string($k)) {
$v = (is_string($v) && strncasecmp($v, 'd', 1)) || $v > 0 ? 'ASC' : 'DESC';
$vx[] = $this->delimite($k) . ' ' . $v;
$vx[] = $this->identifiers->$k . ' ' . $v;
} else {
$vx[] = $this->delimite($v);
$vx[] = $this->identifiers->$v;
}
}
return implode(', ', $vx);
@@ -375,7 +376,7 @@ final class DibiTranslator extends DibiObject
case 'by':
case 'n': // identifier name
return $this->delimite($value);
return $this->identifiers->$value;
case 'ex':
case 'sql': // preserve as dibi-SQL (TODO: leave only %ex)
@@ -534,10 +535,10 @@ final class DibiTranslator extends DibiObject
if ($this->comment) return '...';
if ($matches[1]) // SQL identifiers: `ident`
return $this->delimite($matches[1]);
return $this->identifiers->{$matches[1]};
if ($matches[2]) // SQL identifiers: [ident]
return $this->delimite($matches[2]);
return $this->identifiers->{$matches[2]};
if ($matches[3]) // SQL strings: '...'
return $this->driver->escape( str_replace("''", "'", $matches[4]), dibi::TEXT);
@@ -565,18 +566,16 @@ final class DibiTranslator extends DibiObject
* Apply substitutions to indentifier and delimites it.
* @param string indentifier
* @return string
* @internal
*/
private function delimite($value)
public function delimite($value)
{
$value = self::substitute($value);
if (isset($this->dCache[$value])) {
return $this->dCache[$value];
}
$parts = explode('.', $value);
foreach ($parts as & $v) {
if ($v !== '*') $v = $this->driver->escape($v, dibi::IDENTIFIER);
}
return $this->dCache[$value] = implode('.', $parts);
return implode('.', $parts);
}