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authorLaria Carolin Chabowski <laria@laria.me>2020-02-07 09:44:59 +0100
committerLaria Carolin Chabowski <laria@laria.me>2020-02-07 09:44:59 +0100
commit2eb5a432d2229788ce2fdb09f36c6f4bebdea813 (patch)
treeab57978bdda34c82b025b897cfb6825b1fd1e654 /src/Search/LogicOp.php
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diff --git a/src/Search/LogicOp.php b/src/Search/LogicOp.php
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+<?php
+
+
+namespace Micropoly\Search;
+
+
+class LogicOp implements SearchExpr
+{
+ public const OP_AND = "and";
+ public const OP_OR = "or";
+
+ private const SQLOPS = [
+ self::OP_AND => "AND",
+ self::OP_OR => "OR",
+ ];
+
+ private string $op;
+ private SearchExpr $a;
+ private SearchExpr $b;
+
+ public function __construct(string $op, SearchExpr $a, SearchExpr $b)
+ {
+ if (!self::checkOp($op))
+ throw new \DomainException("{$op} is not a valid operator");
+
+ $this->op = $op;
+ $this->a = $a;
+ $this->b = $b;
+ }
+
+ public static function build(string $op, SearchExpr $a, SearchExpr $b): SearchExpr
+ {
+ return $a instanceof AbstractFTSExpr && $b instanceof AbstractFTSExpr
+ ? new FTSLogicOp($op, $a, $b)
+ : new self($op, $a, $b);
+ }
+
+ /**
+ * @param string $op
+ * @return bool
+ */
+ public static function checkOp(string $op): bool
+ {
+ return in_array($op, [
+ self::OP_AND,
+ self::OP_OR,
+ ]);
+ }
+
+ public function getA(): SearchExpr { return $this->a; }
+ public function getB(): SearchExpr { return $this->b; }
+ public function getOp(): string { return $this->op; }
+
+ public function toString(): string
+ {
+ return "({$this->a->toString()}) {$this->op} ({$this->b->toString()})";
+ }
+
+ public function toSQL($bindPrefix, bool $singleFTS): SQLSearchExpr
+ {
+ $sqlex = new SQLSearchExpr();
+
+ $a = $this->a->toSQL("a_$bindPrefix", $singleFTS);
+ $b = $this->b->toSQL("b_$bindPrefix", $singleFTS);
+ $sqlop = self::SQLOPS[$this->op];
+ assert($sqlop);
+
+ $sqlex->sql = "(({$a->sql}) {$sqlop} ({$b->sql}))";
+ $sqlex->bindings = array_merge($a->bindings, $b->bindings);
+
+ return $sqlex;
+ }
+
+ public function countFTSQueries(): int
+ {
+ return $this->a->countFTSQueries() + $this->b->countFTSQueries();
+ }
+} \ No newline at end of file