Phossa2\Query\Traits\StatementAbstract

Complexity

Total Complexity

10

Size/Duplication

Total Lines	147
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	4

Importance

Changes

0

8 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	4	1
A	getStatement()	0	19	2
A	getBindings()	0	4	1
A	__toString()	0	7	1
A	combineSettings()	0	9	1
A	buildSql()	0	10	2
A	bindValues()	0	9	1
A	setPrevous()	0	5	1

<?php
/**
 * Phossa Project
 *
 * PHP version 5.4
 *
 * @category  Library
 * @package   Phossa2\Query
 * @copyright Copyright (c) 2016 phossa.com
 * @license   http://mit-license.org/ MIT License
 * @link      http://www.phossa.com/
 */
/*# declare(strict_types=1); */

namespace Phossa2\Query\Traits;

use Phossa2\Shared\Base\ObjectAbstract;
use Phossa2\Query\Interfaces\BuilderInterface;
use Phossa2\Query\Interfaces\StatementInterface;

/**
 * StatementAbstract
 *
 * @package Phossa2\Query
 * @author  Hong Zhang <phossa@126.com>
 * @see     ObjectAbstract
 * @see     StatementInterface
 * @version 2.0.0
 * @since   2.0.0 added
 */
abstract class StatementAbstract extends ObjectAbstract implements StatementInterface
{
    use SettingsTrait, BuilderAwareTrait, PreviousTrait;

    /**
     * value bindings
     *
     * @var    array
     * @access protected
     */
    protected $bindings;

    /**
     * Statement type, 'SELECT' etc.
     *
     * @var    string
     * @access protected
     */
    protected $type = '';

    /**
     * clause configs,[name => prefix]
     *
     * @var    array
     * @access protected
     */
    protected $configs = [];

    /**
     * Constructor
     *
     * @param  BuilderInterface $builder
     * @access public
     */
    public function __construct(BuilderInterface $builder)
    {
        $this->setBuilder($builder);
    }

    /**
     * {@inheritDoc}
     */
    public function getStatement(array $settings = [])/*# : string */
    {
        // combine settings
        $settings = $this->combineSettings($settings);

        // statements
        $sql = [];

        // build previous statement
        if ($this->hasPrevious()) {
            $sql[] = $this->getPrevious()->getStatement($settings);
        }

        // build current sql
        $sql[] = $this->buildSql($settings);

        // replace with ?, :name or real values
        return $this->bindValues(join($settings['seperator'], $sql), $settings);
    }

    /**
     * {@inheritDoc}
     */
    public function getBindings()/*# : array */
    {
        return $this->bindings;
    }

    /**
     * {@inheritDoc}
     */
    public function __toString()/*# : string */
    {
        return $this->getStatement([
            'positionedParam' => false,
            'namedParam' => false,
        ]);
    }

    /**
     * Combine builder/statement and provided settings
     *
     * @param  array $settings statement specific settings
     * @return array
     * @access protected
     */
    protected function combineSettings(array $settings)/*# : array */
    {
        return array_replace(
            $this->getBuilder()->getSettings(), // builder settings
            $this->getBuilder()->getDialect()->dialectSettings(), // dialect
            $settings,  // user settings
            $this->getSettings() // statement settings
        );
    }

    /**
     * Build SQL statement clauses
     *
     * @param  array $settings
     * @param  string
     * @access protected
     */
    protected function buildSql(array $settings)/*# : string */
    {
        $result = $this->type;
        $settings['join'] = $settings['seperator'] . $settings['indent'];
        foreach ($this->configs as $clause => $prefix) {
            $method = 'build' . ucfirst(strtolower($clause));
            $result .= $this->{$method}($prefix, $settings);
        }
        return $result;
    }

    /**
     * Replace placeholders in the sql with '?', ':named' or real value
     *
     * @param  string $sql
     * @param  array $settings
     * @return string
     * @access protected
     */
    protected function bindValues(/*# string */ $sql, array $settings)
    {
        // init bindings
        $this->bindings = [];

        // bind values
        return $this->getBuilder()->getParameter()
            ->bindValues($sql, $this->bindings, $settings);
    }

    /**
     * Set previous statement
     *
     * @param  StatementInterface $stmt
     * @return $this
     * @access protected
     */
    protected function setPrevous(StatementInterface $stmt)
    {
        $this->previous = $stmt;
        return $this;
    }
}