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sql expression (lots of todo)

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This commit is contained in:
Roman
2021-04-08 19:08:05 +02:00
parent 43d9a65def
commit 4582ca0f9f
13 changed files with 187 additions and 31 deletions
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36
core/Driver/SQL/PostgreSQL.class.php
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@@ -16,6 +16,9 @@ use Driver\SQL\Column\JsonColumn;
use Driver\SQL\Condition\CondRegex;
use Driver\SQL\Expression\Add;
use Driver\SQL\Expression\CurrentTimeStamp;
use Driver\SQL\Expression\DateAdd;
use Driver\SQL\Expression\Expression;
use Driver\SQL\Query\CreateProcedure;
use Driver\SQL\Query\CreateTrigger;
use Driver\SQL\Query\Query;
@@ -151,7 +154,7 @@ class PostgreSQL extends SQL {
$columnName = $this->columnName($value->getName());
$updateValues[] = "$leftColumn=EXCLUDED.$columnName";
} else if ($value instanceof Add) {
$columnName = $this->columnName($value->getColumn());
$columnName = $this->columnName($value->getLHS());
$operator = $value->getOperator();
$value = $value->getValue();
$updateValues[] = "$leftColumn=$columnName$operator" . $this->addValue($value, $params);
@@ -257,8 +260,10 @@ class PostgreSQL extends SQL {
return $value ? "TRUE" : "FALSE";
} else if(is_null($value)) {
return "NULL";
} else if($value instanceof Keyword) {
} else if ($value instanceof Keyword) {
return $value->getValue();
} else if ($value instanceof CurrentTimeStamp) {
return "CURRENT_TIMESTAMP";
} else {
$str = str_replace("'", "''", $value);
return "'$str'";
@@ -274,6 +279,8 @@ class PostgreSQL extends SQL {
return "NEW." . $this->columnName($val->getName());
} else if ($val instanceof Column) {
return $this->columnName($val->getName());
} else if ($val instanceof Expression) {
return $this->createExpression($val, $params);
} else {
$params[] = is_bool($val) ? ($val ? "TRUE" : "FALSE") : $val;
return '$' . count($params);
@@ -312,11 +319,6 @@ class PostgreSQL extends SQL {
}
}
// Special Keywords and functions
public function currentTimestamp(): Keyword {
return new Keyword("CURRENT_TIMESTAMP");
}
public function getStatus() {
$version = pg_version($this->connection)["client"] ?? "??";
$status = pg_connection_status($this->connection);
@@ -410,4 +412,24 @@ class PostgreSQL extends SQL {
return $query;
}
protected function createExpression(Expression $exp, array &$params) {
if ($exp instanceof DateAdd) {
$lhs = $this->addValue($exp->getLHS(), $params);
$rhs = $this->addValue($exp->getRHS(), $params);
$unit = $exp->getUnit();
if ($exp->getRHS() instanceof Column) {
$rhs = "$rhs * INTERVAL '1 $unit'";
} else {
$rhs = "$rhs $unit";
}
return "$lhs + $rhs";
} else if ($exp instanceof CurrentTimeStamp) {
return "CURRENT_TIMESTAMP";
} else {
return parent::createExpression($exp, $params);
}
}
}