sql expression (lots of todo)
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parent
43d9a65def
commit
4582ca0f9f
43
cli.php
43
cli.php
@ -5,6 +5,10 @@ include_once 'core/constants.php';
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use Configuration\Configuration;
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use Configuration\DatabaseScript;
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use Driver\SQL\Column\Column;
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use Driver\SQL\Condition\Compare;
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use Driver\SQL\Condition\CondIn;
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use Driver\SQL\Expression\DateAdd;
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use Objects\ConnectionData;
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use Objects\User;
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@ -155,6 +159,45 @@ function handleDatabase(array $argv) {
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proc_close($process);
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}
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} else if ($action === "clean") {
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$user = getUser();
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$sql = $user->getSQL();
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printLine("Deleting user related data older than 90 days...");
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// 1st: Select all related tables and entities
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$tables = [];
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$res = $sql->select("entityId", "tableName")
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->from("EntityLog")
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->where(new Compare($sql->now(), new DateAdd(new Column("modified"), new Column("lifetime"), "DAY"), ">="))
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->execute();
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$success = ($res !== false);
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if (!$success) {
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_exit("Error querying data: " . $sql->getLastError());
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}
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foreach ($res as $row) {
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$tableName = $row["tableName"];
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$uid = $row["entityId"];
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if (!isset($tables[$tableName])) {
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$tables[$tableName] = [];
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}
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$tables[$tableName][] = $uid;
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}
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// 2nd: delete!
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foreach ($tables as $table => $uids) {
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$success = $sql->delete($table)
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->where(new CondIn("uid", $uids))
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->execute();
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if (!$success) {
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printLine("Error deleting data: " . $sql->getLastError());
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}
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}
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printLine("Done!");
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} else {
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_exit("Usage: cli.php db <migrate|import|export> [options...]");
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}
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@ -38,12 +38,23 @@ class log extends DatabaseScript {
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->exec(array(
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$sql->update("EntityLog")
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->set("modified", $sql->now())
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->where(new Compare("entityId",new CurrentColumn("uid")))
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->where(new Compare("tableName",new CurrentTable()))
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->where(new Compare("entityId", new CurrentColumn("uid")))
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->where(new Compare("tableName", new CurrentTable()))
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));
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$deleteProcedure = $sql->createProcedure("DeleteEntityLog")
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->param(new CurrentTable())
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->param(new IntColumn("uid"))
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->returns(new Trigger())
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->exec(array(
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$sql->delete("EntityLog")
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->where(new Compare("entityId", new CurrentColumn("uid")))
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->where(new Compare("tableName", new CurrentTable()))
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));
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$queries[] = $insertProcedure;
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$queries[] = $updateProcedure;
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$queries[] = $deleteProcedure;
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$tables = ["ContactRequest"];
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foreach ($tables as $table) {
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@ -55,6 +66,10 @@ class log extends DatabaseScript {
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$queries[] = $sql->createTrigger("${table}_trg_update")
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->after()->update($table)
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->exec($updateProcedure);
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$queries[] = $sql->createTrigger("${table}_trg_delete")
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->after()->delete($table)
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->exec($deleteProcedure);
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}
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return $queries;
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@ -2,7 +2,9 @@
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namespace Driver\SQL\Column;
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class Column {
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use Driver\SQL\Expression\Expression;
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class Column extends Expression {
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private string $name;
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private bool $nullable;
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@ -5,16 +5,16 @@ namespace Driver\SQL\Condition;
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class Compare extends Condition {
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private string $operator;
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private string $column;
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private $lhs;
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private $value;
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public function __construct(string $col, $val, string $operator = '=') {
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public function __construct($col, $val, string $operator = '=') {
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$this->operator = $operator;
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$this->column = $col;
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$this->lhs = $col;
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$this->value = $val;
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}
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public function getColumn(): string { return $this->column; }
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public function getLHS() { return $this->lhs; }
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public function getValue() { return $this->value; }
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public function getOperator(): string { return $this->operator; }
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@ -2,6 +2,8 @@
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namespace Driver\SQL\Condition;
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abstract class Condition {
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use Driver\SQL\Expression\Expression;
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abstract class Condition extends Expression {
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}
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7
core/Driver/SQL/Expression/CurrentTimeStamp.class.php
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7
core/Driver/SQL/Expression/CurrentTimeStamp.class.php
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@ -0,0 +1,7 @@
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<?php
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namespace Driver\SQL\Expression;
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class CurrentTimeStamp extends Expression {
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}
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23
core/Driver/SQL/Expression/DateAdd.class.php
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23
core/Driver/SQL/Expression/DateAdd.class.php
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@ -0,0 +1,23 @@
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<?php
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namespace Driver\SQL\Expression;
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use Driver\SQL\SQL;
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class DateAdd extends Expression {
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private Expression $lhs;
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private Expression $rhs;
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private string $unit;
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public function __construct(Expression $lhs, Expression $rhs, string $unit) {
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$this->lhs = $lhs;
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$this->rhs = $rhs;
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$this->unit = $unit;
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}
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public function getLHS(): Expression { return $this->lhs; }
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public function getRHS(): Expression { return $this->rhs; }
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public function getUnit(): string { return $this->unit; }
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}
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9
core/Driver/SQL/Expression/Expression.class.php
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9
core/Driver/SQL/Expression/Expression.class.php
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@ -0,0 +1,9 @@
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<?php
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namespace Driver\SQL\Expression;
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use Driver\SQL\SQL;
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abstract class Expression {
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}
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@ -2,7 +2,9 @@
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namespace Driver\SQL;
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class Keyword {
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use Driver\SQL\Expression\Expression;
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class Keyword extends Expression {
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private string $value;
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@ -16,6 +16,9 @@ use Driver\SQL\Column\JsonColumn;
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use Driver\SQL\Condition\CondRegex;
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use Driver\SQL\Expression\Add;
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use Driver\SQL\Expression\CurrentTimeStamp;
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use Driver\SQL\Expression\DateAdd;
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use Driver\SQL\Expression\Expression;
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use Driver\SQL\Query\CreateProcedure;
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use Driver\SQL\Query\CreateTrigger;
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use Driver\SQL\Query\Query;
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@ -192,7 +195,7 @@ class MySQL extends SQL {
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$columnName = $this->columnName($value->getName());
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$updateValues[] = "$leftColumn=VALUES($columnName)";
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} else if($value instanceof Add) {
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$columnName = $this->columnName($value->getColumn());
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$columnName = $this->columnName($value->getLHS());
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$operator = $value->getOperator();
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$value = $value->getValue();
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$updateValues[] = "$leftColumn=$columnName$operator" . $this->addValue($value, $params);
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@ -278,6 +281,8 @@ class MySQL extends SQL {
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return "NULL";
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} else if($value instanceof Keyword) {
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return $value->getValue();
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} else if ($value instanceof CurrentTimeStamp) {
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return "CURRENT_TIMESTAMP";
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} else {
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$str = addslashes($value);
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return "'$str'";
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@ -291,6 +296,8 @@ class MySQL extends SQL {
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return $val->getName();
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} else if ($val instanceof Column) {
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return $this->columnName($val->getName());
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} else if ($val instanceof Expression) {
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return $this->createExpression($val, $params);
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} else {
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$params[] = $val;
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return "?";
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@ -329,10 +336,6 @@ class MySQL extends SQL {
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}
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}
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public function currentTimestamp(): Keyword {
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return new Keyword("NOW()");
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}
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public function getStatus() {
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return mysqli_stat($this->connection);
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}
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@ -397,4 +400,17 @@ class MySQL extends SQL {
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return $query;
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}
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protected function createExpression(Expression $exp, array &$params) {
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if ($exp instanceof DateAdd) {
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$lhs = $this->addValue($exp->getLHS(), $params);
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$rhs = $this->addValue($exp->getRHS(), $params);
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$unit = $exp->getUnit();
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return "DATE_ADD($lhs, INTERVAL $rhs $unit)";
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} else if ($exp instanceof CurrentTimeStamp) {
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return "NOW()";
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} else {
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return parent::createExpression($exp, $params);
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}
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}
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}
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@ -16,6 +16,9 @@ use Driver\SQL\Column\JsonColumn;
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use Driver\SQL\Condition\CondRegex;
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use Driver\SQL\Expression\Add;
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use Driver\SQL\Expression\CurrentTimeStamp;
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use Driver\SQL\Expression\DateAdd;
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use Driver\SQL\Expression\Expression;
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use Driver\SQL\Query\CreateProcedure;
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use Driver\SQL\Query\CreateTrigger;
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use Driver\SQL\Query\Query;
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@ -151,7 +154,7 @@ class PostgreSQL extends SQL {
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$columnName = $this->columnName($value->getName());
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$updateValues[] = "$leftColumn=EXCLUDED.$columnName";
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} else if ($value instanceof Add) {
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$columnName = $this->columnName($value->getColumn());
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$columnName = $this->columnName($value->getLHS());
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$operator = $value->getOperator();
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$value = $value->getValue();
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$updateValues[] = "$leftColumn=$columnName$operator" . $this->addValue($value, $params);
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@ -257,8 +260,10 @@ class PostgreSQL extends SQL {
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return $value ? "TRUE" : "FALSE";
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} else if(is_null($value)) {
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return "NULL";
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} else if($value instanceof Keyword) {
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} else if ($value instanceof Keyword) {
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return $value->getValue();
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} else if ($value instanceof CurrentTimeStamp) {
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return "CURRENT_TIMESTAMP";
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} else {
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$str = str_replace("'", "''", $value);
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return "'$str'";
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@ -274,6 +279,8 @@ class PostgreSQL extends SQL {
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return "NEW." . $this->columnName($val->getName());
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} else if ($val instanceof Column) {
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return $this->columnName($val->getName());
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} else if ($val instanceof Expression) {
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return $this->createExpression($val, $params);
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} else {
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$params[] = is_bool($val) ? ($val ? "TRUE" : "FALSE") : $val;
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return '$' . count($params);
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@ -312,11 +319,6 @@ class PostgreSQL extends SQL {
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}
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}
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// Special Keywords and functions
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public function currentTimestamp(): Keyword {
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return new Keyword("CURRENT_TIMESTAMP");
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}
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public function getStatus() {
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$version = pg_version($this->connection)["client"] ?? "??";
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$status = pg_connection_status($this->connection);
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@ -410,4 +412,24 @@ class PostgreSQL extends SQL {
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return $query;
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}
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protected function createExpression(Expression $exp, array &$params) {
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if ($exp instanceof DateAdd) {
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$lhs = $this->addValue($exp->getLHS(), $params);
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$rhs = $this->addValue($exp->getRHS(), $params);
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$unit = $exp->getUnit();
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if ($exp->getRHS() instanceof Column) {
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$rhs = "$rhs * INTERVAL '1 $unit'";
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} else {
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$rhs = "$rhs $unit";
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}
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return "$lhs + $rhs";
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} else if ($exp instanceof CurrentTimeStamp) {
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return "CURRENT_TIMESTAMP";
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} else {
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return parent::createExpression($exp, $params);
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}
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}
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}
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@ -2,9 +2,10 @@
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namespace Driver\SQL\Query;
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use Driver\SQL\Expression\Expression;
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use Driver\SQL\SQL;
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abstract class Query {
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abstract class Query extends Expression {
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protected SQL $sql;
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public bool $dump;
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@ -23,6 +24,4 @@ abstract class Query {
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public function execute() {
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return $this->sql->executeQuery($this);
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}
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public abstract function build(array &$params): ?string;
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}
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@ -15,6 +15,9 @@ use Driver\SQL\Constraint\Constraint;
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use \Driver\SQL\Constraint\Unique;
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use \Driver\SQL\Constraint\PrimaryKey;
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use \Driver\SQL\Constraint\ForeignKey;
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use Driver\SQL\Expression\CurrentTimeStamp;
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use Driver\SQL\Expression\DateAdd;
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use Driver\SQL\Expression\Expression;
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use Driver\SQL\Query\AlterTable;
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use Driver\SQL\Query\CreateProcedure;
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use Driver\SQL\Query\CreateTable;
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@ -205,8 +208,8 @@ abstract class SQL {
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public abstract function columnName($col): string;
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// Special Keywords and functions
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public function now(): Keyword { return $this->currentTimestamp(); }
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public abstract function currentTimestamp(): Keyword;
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public function now(): CurrentTimeStamp { return new CurrentTimeStamp(); }
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public function currentTimestamp(): CurrentTimeStamp { return new CurrentTimeStamp(); }
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public function count($col = NULL): Keyword {
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if (is_null($col)) {
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@ -243,19 +246,23 @@ abstract class SQL {
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}
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return "(" . implode(" OR ", $conditions) . ")";
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} else if ($condition instanceof Compare) {
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$column = $this->columnName($condition->getColumn());
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$lhs = $condition->getLHS();
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$lhs = ($lhs instanceof Expression ?
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$this->createExpression($lhs, $params) :
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$this->columnName($lhs));
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$value = $condition->getValue();
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$operator = $condition->getOperator();
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if ($value === null) {
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if ($operator === "=") {
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return "$column IS NULL";
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return "$lhs IS NULL";
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} else if ($operator === "!=") {
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return "$column IS NOT NULL";
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return "$lhs IS NOT NULL";
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}
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}
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return $column . $operator . $this->addValue($value, $params);
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return $lhs . $operator . $this->addValue($value, $params);
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} else if ($condition instanceof CondBool) {
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return $this->columnName($condition->getValue());
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} else if (is_array($condition)) {
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@ -306,7 +313,16 @@ abstract class SQL {
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return $this->columnName($condition->getColumn()) . " IS NULL";
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} else {
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$this->lastError = "Unsupported condition type: " . get_class($condition);
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return false;
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return null;
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}
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}
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protected function createExpression(Expression $exp, array &$params) {
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if ($exp instanceof Column) {
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return $this->columnName($exp);
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} else {
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$this->lastError = "Unsupported expression type: " . get_class($exp);
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return null;
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}
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}
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