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- <?php
- namespace Tqdev\PhpCrudApi\Database;
-
- use Tqdev\PhpCrudApi\Record\Condition\AndCondition;
- use Tqdev\PhpCrudApi\Record\Condition\ColumnCondition;
- use Tqdev\PhpCrudApi\Record\Condition\Condition;
- use Tqdev\PhpCrudApi\Record\Condition\NoCondition;
- use Tqdev\PhpCrudApi\Record\Condition\NotCondition;
- use Tqdev\PhpCrudApi\Record\Condition\OrCondition;
- use Tqdev\PhpCrudApi\Record\Condition\SpatialCondition;
- use Tqdev\PhpCrudApi\Column\Reflection\ReflectedColumn;
-
- class ConditionsBuilder
- {
- private $driver;
-
- public function __construct(String $driver)
- {
- $this->driver = $driver;
- }
-
- private function getConditionSql(Condition $condition, array &$arguments): String
- {
- if ($condition instanceof AndCondition) {
- return $this->getAndConditionSql($condition, $arguments);
- }
- if ($condition instanceof OrCondition) {
- return $this->getOrConditionSql($condition, $arguments);
- }
- if ($condition instanceof NotCondition) {
- return $this->getNotConditionSql($condition, $arguments);
- }
- if ($condition instanceof ColumnCondition) {
- return $this->getColumnConditionSql($condition, $arguments);
- }
- if ($condition instanceof SpatialCondition) {
- return $this->getSpatialConditionSql($condition, $arguments);
- }
- throw new \Exception('Unknown Condition: ' . get_class($condition));
- }
-
- private function getAndConditionSql(AndCondition $and, array &$arguments): String
- {
- $parts = [];
- foreach ($and->getConditions() as $condition) {
- $parts[] = $this->getConditionSql($condition, $arguments);
- }
- return '(' . implode(' AND ', $parts) . ')';
- }
-
- private function getOrConditionSql(OrCondition $or, array &$arguments): String
- {
- $parts = [];
- foreach ($or->getConditions() as $condition) {
- $parts[] = $this->getConditionSql($condition, $arguments);
- }
- return '(' . implode(' OR ', $parts) . ')';
- }
-
- private function getNotConditionSql(NotCondition $not, array &$arguments): String
- {
- $condition = $not->getCondition();
- return '(NOT ' . $this->getConditionSql($condition, $arguments) . ')';
- }
-
- private function quoteColumnName(ReflectedColumn $column): String
- {
- return '"' . $column->getName() . '"';
- }
-
- private function escapeLikeValue(String $value): String
- {
- return addcslashes($value, '%_');
- }
-
- private function getColumnConditionSql(ColumnCondition $condition, array &$arguments): String
- {
- $column = $this->quoteColumnName($condition->getColumn());
- $operator = $condition->getOperator();
- $value = $condition->getValue();
- switch ($operator) {
- case 'cs':
- $sql = "$column LIKE ?";
- $arguments[] = '%' . $this->escapeLikeValue($value) . '%';
- break;
- case 'sw':
- $sql = "$column LIKE ?";
- $arguments[] = $this->escapeLikeValue($value) . '%';
- break;
- case 'ew':
- $sql = "$column LIKE ?";
- $arguments[] = '%' . $this->escapeLikeValue($value);
- break;
- case 'eq':
- $sql = "$column = ?";
- $arguments[] = $value;
- break;
- case 'lt':
- $sql = "$column < ?";
- $arguments[] = $value;
- break;
- case 'le':
- $sql = "$column <= ?";
- $arguments[] = $value;
- break;
- case 'ge':
- $sql = "$column >= ?";
- $arguments[] = $value;
- break;
- case 'gt':
- $sql = "$column > ?";
- $arguments[] = $value;
- break;
- case 'bt':
- $parts = explode(',', $value, 2);
- $count = count($parts);
- if ($count == 2) {
- $sql = "($column >= ? AND $column <= ?)";
- $arguments[] = $parts[0];
- $arguments[] = $parts[1];
- } else {
- $sql = "FALSE";
- }
- break;
- case 'in':
- $parts = explode(',', $value);
- $count = count($parts);
- if ($count > 0) {
- $qmarks = implode(',', str_split(str_repeat('?', $count)));
- $sql = "$column IN ($qmarks)";
- for ($i = 0; $i < $count; $i++) {
- $arguments[] = $parts[$i];
- }
- } else {
- $sql = "FALSE";
- }
- break;
- case 'is':
- $sql = "$column IS NULL";
- break;
- }
- return $sql;
- }
-
- private function getSpatialFunctionName(String $operator): String
- {
- switch ($operator) {
- case 'co':return 'ST_Contains';
- case 'cr':return 'ST_Crosses';
- case 'di':return 'ST_Disjoint';
- case 'eq':return 'ST_Equals';
- case 'in':return 'ST_Intersects';
- case 'ov':return 'ST_Overlaps';
- case 'to':return 'ST_Touches';
- case 'wi':return 'ST_Within';
- case 'ic':return 'ST_IsClosed';
- case 'is':return 'ST_IsSimple';
- case 'iv':return 'ST_IsValid';
- }
- }
-
- private function hasSpatialArgument(String $operator): bool
- {
- return in_array($opertor, ['ic', 'is', 'iv']) ? false : true;
- }
-
- private function getSpatialFunctionCall(String $functionName, String $column, bool $hasArgument): String
- {
- switch ($this->driver) {
- case 'mysql':
- case 'pgsql':
- $argument = $hasArgument ? 'ST_GeomFromText(?)' : '';
- return "$functionName($column, $argument)=TRUE";
- case 'sql_srv':
- $functionName = str_replace('ST_', 'ST', $functionName);
- $argument = $hasArgument ? 'geometry::STGeomFromText(?,0)' : '';
- return "$column.$functionName($argument)=1";
- }
- }
-
- private function getSpatialConditionSql(ColumnCondition $condition, array &$arguments): String
- {
- $column = $this->quoteColumnName($condition->getColumn());
- $operator = $condition->getOperator();
- $value = $condition->getValue();
- $functionName = $this->getSpatialFunctionName($operator);
- $hasArgument = $this->hasSpatialArgument($operator);
- $sql = $this->getSpatialFunctionCall($functionName, $column, $hasArgument);
- if ($hasArgument) {
- $arguments[] = $value;
- }
- return $sql;
- }
-
- public function getWhereClause(Condition $condition, array &$arguments): String
- {
- if ($condition instanceof NoCondition) {
- return '';
- }
- return ' WHERE ' . $this->getConditionSql($condition, $arguments);
- }
- }
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