ntentan\nibii\QueryEngine

Complexity

Total Complexity

11

Size/Duplication

Total Lines	104
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	2

Test Coverage

Coverage

82.14%

Importance

Changes

0

7 Methods

Rating	Name	Duplication	Size	Complexity
A	setDriver()	0	3	1
A	getInsertQuery()	0	15	2
A	getBulkUpdateQuery()	0	13	2
A	getUpdateQuery()	0	22	3
A	getSelectQuery()	0	11	1
A	getCountQuery()	0	7	1
A	getDeleteQuery()	0	7	1

<?php

namespace ntentan\nibii;

class QueryEngine {

    private $db;

    public function setDriver($driver) {
        $this->db = $driver;
    }

    /**
     * Generates an SQL insert query string for the model based on the fields
     * currently stored in the model.
     * 
     * @param RecordWrapper $model
     * @return string
     */
    public function getInsertQuery($model) {
        $data = $model->getData();
        $table = $model->getDBStoreInformation()['quoted_table'];
        $fields = array_keys($data[0]);
        $quotedFields = [];
        $valueFields = [];

        foreach ($fields as $field) {
            $quotedFields[] = $this->db->quoteIdentifier($field);
            $valueFields[] = ":{$field}";
        }

        return "INSERT INTO " . $table .
            " (" . implode(", ", $quotedFields) . ") VALUES (" . implode(', ', $valueFields) . ")";
    }

    public function getBulkUpdateQuery($data, $parameters) {
        $updateData = [];
        foreach ($data as $field => $value) {
            $updateData[] = "{$this->db->quoteIdentifier($field)} = :$field";
        }

        return sprintf(
            "UPDATE %s SET %s %s", 
            $parameters->getTable(), 
            implode(', ', $updateData), 
            $parameters->getWhereClause()
        );
    }

    /**
     * Generates an SQL update query string for the model based on the data
     * currently stored in the model.
     * 
     * @param RecordWrapper $model
     * @return string
     */    
    public function getUpdateQuery($model) {
        $data = $model->getData();
        $fields = array_keys($data[0]);
        $valueFields = [];
        $conditions = [];
        $primaryKey = $model->getDescription()->getPrimaryKey();

        foreach ($fields as $field) {
            $quotedField = $this->db->quoteIdentifier($field);

            if (array_search($field, $primaryKey) !== false) {
                $conditions[] = "{$quotedField} = :{$field}";
            } else {
                $valueFields[] = "{$quotedField} = :{$field}";
            }
        }

        return "UPDATE " .
            $model->getDBStoreInformation()['quoted_table'] .
            " SET " . implode(', ', $valueFields) .
            " WHERE " . implode(' AND ', $conditions);
    }

    public function getSelectQuery($parameters) {
        return sprintf(
            "SELECT %s FROM %s%s%s%s%s", 
            $parameters->getFields(), 
            $parameters->getTable(), 
            $parameters->getWhereClause(), 
            $parameters->getSorts(), 
            $parameters->getLimit(), 
            $parameters->getOffset()
        );
    }

    public function getCountQuery($parameters) {
        return sprintf(
            "SELECT count(*) as count FROM %s%s", 
            $parameters->getTable(), 
            $parameters->getWhereClause()
        );
    }

    public function getDeleteQuery($parameters) {
        return sprintf(
            "DELETE FROM %s%s", 
            $parameters->getTable(), 
            $parameters->getWhereClause()
        );
    }

}