WhereStatement::__construct() - Code Metrics - Inspection of "support or operator for where conditions (resolves..." - jaredtking/jaqb - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 609ee9...07eb26 )

by Jared

created 2016-04-20 03:56 UTC

WhereStatement::__construct() A

↳ Parent: WhereStatement

Complexity

Conditions	1
Paths	1

Size

Total Lines	4
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
c	1
b	0
f	0
dl	0
loc	4
rs	10
cc	1
eloc	2
nc	1
nop	1

<?php

/**
 * @author Jared King <[email protected]>
 *
 * @link http://jaredtking.com
 *
 * @copyright 2015 Jared King
 * @license MIT
 */
namespace JAQB\Statement;

class WhereStatement extends Statement
{
    /**
     * @var bool
     */
    protected $having;

    /**
     * @var array
     */
    protected $conditions = [];

    /**
     * @param bool $having when true, statement becomes a having statement
     */
    public function __construct($having = false)
    {
        $this->having = $having;
    }

    /**
     * Tells whether this statement is a HAVING statement.
     *
     * @return bool true: is HAVING, false: is WHERE
     */
    public function isHaving()
    {
        return $this->having;
    }

    /**
     * Adds a condition to the statement.
     *
     * Accepts the following forms:
     * 1. Equality comparison:
     *      addCondition('username', 'john')
     * 2. Comparison with custom operator:
     *      addCondition('balance', 100, '>')
     * 3. IN statement:
     *      addCondition('group', ['admin', 'owner'])
     * 4. SQL fragment:
     *      addCondition('name LIKE "%john%"')
     * 5. List of conditions to add:
     *      addCondition([['balance', 100, '>'],
     *                    ['user_id', 5]])
     * 6. Map of equality comparisons:
     *      addCondition(['username' => 'john',
     *                    'user_id' => 5])
     * 7. List of SQL fragments:
     *      addCondition(['first_name LIKE "%john%"',
     *                    'last_name LIKE "%doe%"'])
     *
     * @param array|string $field
     * @param string|bool  $value    condition value (optional)
     * @param string       $operator operator (optional)
     *
     * @return self
     */
    public function addCondition($field, $value = false, $operator = '=')
    {
        if (is_array($field) && !$value) {
            foreach ($field as $key => $value) {
                // handles #5
                if (is_array($value)) {
                    call_user_func_array([$this, 'addCondition'], $value);
                // handles #6
                } elseif (!is_numeric($key)) {
                    $this->addCondition($key, $value);
                // handles #7
                } else {
                    $this->addCondition($value);
                }
            }

            return $this;
        }

        // handles #4
        $condition = [$field];

        if (func_num_args() >= 2) {
            // handles #3
            if (is_array($value) && $operator === '=') {
                $operator = 'IN';
            } elseif (is_array($value) && $operator === '<>') {
                $operator = 'NOT IN';
            }

            // handles #1 and #2
            $condition[] = $operator;
            $condition[] = $value;
        }

        $this->conditions[] = $condition;

        return $this;
    }

    public function addConditionOr($field, $value = false, $operator = '=')

    {
        $this->conditions[] = ['OR'];

        return call_user_func_array([$this, 'addCondition'], func_get_args());
    }

    /**
     * Adds a between condition to the query.
     *
     * @param string $field
     * @param mixed  $a     first between value
     * @param mixed  $b     second between value
     *
     * @return self
     */
    public function addBetweenCondition($field, $a, $b)
    {
        $this->conditions[] = [$field, 'BETWEEN', $a, $b];

        return $this;
    }

    /**
     * Adds a not between condition to the query.
     *
     * @param string $field
     * @param mixed  $a     first between value
     * @param mixed  $b     second between value
     *
     * @return self
     */
    public function addNotBetweenCondition($field, $a, $b)
    {
        $this->conditions[] = [$field, 'NOT BETWEEN', $a, $b];

        return $this;
    }

    /**
     * Gets the conditions for this statement.
     *
     * @return array
     */
    public function getConditions()
    {
        return $this->conditions;
    }

    public function build()
    {
        // reset the parameterized values
        $this->values = [];

        // build clause from conditions
        $clauses = [];
        foreach ($this->conditions as $condition) {
            $clauses[] = $this->buildClause($condition);
        }

        // remove empty values
        $clauses = array_filter($clauses);

        if (count($clauses) == 0) {
            return '';
        }

        $sql = (!$this->having) ? 'WHERE ' : 'HAVING ';

        return $sql.$this->implodeClauses($clauses);
    }

    /**
     * Builds a parameterized and escaped SQL fragment
     * for a condition that uses our own internal
     * representation.
     *
     * A condition is represented by an array, and can be
     * have one of the following forms:
     * i)   ['SQL fragment']
     * ii)  ['identifier', '=', 'value']
     * iii) ['identifier', 'BETWEEN', 'value', 'value']
     *
     * @param array $cond
     *
     * @return string generated SQL fragment
     */
    protected function buildClause(array $cond)
    {
        // handle SQL fragments
        if (count($cond) == 1) {
            return $cond[0];
        }

        // escape the identifier
        $cond[0] = $this->escapeIdentifier($cond[0]);
        if (empty($cond[0])) {
            return '';
        }

        // handle between conditions
        if ($cond[1] === 'BETWEEN') {
            return $cond[0].' BETWEEN '.$this->parameterize($cond[2]).' AND '.$this->parameterize($cond[3]);
        } elseif ($cond[1] === 'NOT BETWEEN') {
            return $cond[0].' NOT BETWEEN '.$this->parameterize($cond[2]).' AND '.$this->parameterize($cond[3]);
        }

        // handle NULL values
        if ($cond[1] === '=' && $cond[2] === null) {
            return $cond[0].' IS NULL';
        } elseif ($cond[1] === '<>' && $cond[2] === null) {
            return $cond[0].' IS NOT NULL';
        }

        // handle array values, i.e. for IN conditions
        if (is_array($cond[2])) {
            foreach ($cond[2] as &$value) {
                $value = $this->parameterize($value);
            }
            $cond[2] = '('.implode(',', $cond[2]).')';

        // otherwise parameterize the value
        } else {
            $cond[2] = $this->parameterize($cond[2]);
        }

        return implode(' ', $cond);
    }

    protected function implodeClauses(array $clauses)
    {
        $str = false;
        $or = false;
        foreach ($clauses as $clause) {
            // an 'OR' token will change the operator used
            // when concatenating the next clause
            if ($clause == 'OR') {
                $or = true;
                continue;
            }

            if (!$str) { // first clause needs no operator
                $str = $clause;
            } elseif ($or) {
                $str .= " OR $clause";
            } else {
                $str .= " AND $clause";
            }

            $or = false;
        }

        return $str;
    }
}


1			<?php
2
3			/**
4			* @author Jared King <[email protected]>
5			*
6			* @link http://jaredtking.com
7			*
8			* @copyright 2015 Jared King
9			* @license MIT
10			*/
11			namespace JAQB\Statement;
12
13			class WhereStatement extends Statement
14			{
15			/**
16			* @var bool
17			*/
18			protected $having;
19
20			/**
21			* @var array
22			*/
23			protected $conditions = [];
24
25			/**
26			* @param bool $having when true, statement becomes a having statement
27			*/
28			public function __construct($having = false)
29			{
30			$this->having = $having;
31			}
32
33			/**
34			* Tells whether this statement is a HAVING statement.
35			*
36			* @return bool true: is HAVING, false: is WHERE
37			*/
38			public function isHaving()
39			{
40			return $this->having;
41			}
42
43			/**
44			* Adds a condition to the statement.
45			*
46			* Accepts the following forms:
47			* 1. Equality comparison:
48			* addCondition('username', 'john')
49			* 2. Comparison with custom operator:
50			* addCondition('balance', 100, '>')
51			* 3. IN statement:
52			* addCondition('group', ['admin', 'owner'])
53			* 4. SQL fragment:
54			* addCondition('name LIKE "%john%"')
55			* 5. List of conditions to add:
56			* addCondition([['balance', 100, '>'],
57			* ['user_id', 5]])
58			* 6. Map of equality comparisons:
59			* addCondition(['username' => 'john',
60			* 'user_id' => 5])
61			* 7. List of SQL fragments:
62			* addCondition(['first_name LIKE "%john%"',
63			* 'last_name LIKE "%doe%"'])
64			*
65			* @param array\|string $field
66			* @param string\|bool $value condition value (optional)
67			* @param string $operator operator (optional)
68			*
69			* @return self
70			*/
71			public function addCondition($field, $value = false, $operator = '=')
72			{
73			if (is_array($field) && !$value) {
74			foreach ($field as $key => $value) {
75			// handles #5
76			if (is_array($value)) {
77			call_user_func_array([$this, 'addCondition'], $value);
78			// handles #6
79			} elseif (!is_numeric($key)) {
80			$this->addCondition($key, $value);
81			// handles #7
82			} else {
83			$this->addCondition($value);
84			}
85			}
86
87			return $this;
88			}
89
90			// handles #4
91			$condition = [$field];
92
93			if (func_num_args() >= 2) {
94			// handles #3
95			if (is_array($value) && $operator === '=') {
96			$operator = 'IN';
97			} elseif (is_array($value) && $operator === '<>') {
98			$operator = 'NOT IN';
99			}
100
101			// handles #1 and #2
102			$condition[] = $operator;
103			$condition[] = $value;
104			}
105
106			$this->conditions[] = $condition;
107
108			return $this;
109			}
110
111			public function addConditionOr($field, $value = false, $operator = '=')
			0 ignored issues – show Unused Code introduced 2016-04-20 03:58 UTC by Report Bug Copy Issue Report The parameter `$field` is not used and could be removed. This check looks from parameters that have been defined for a function or method, but which are not used in the method body. Loading history... Unused Code introduced 2016-04-20 03:58 UTC by Report Bug Copy Issue Report The parameter `$value` is not used and could be removed. This check looks from parameters that have been defined for a function or method, but which are not used in the method body. Loading history... Unused Code introduced 2016-04-20 03:58 UTC by Report Bug Copy Issue Report The parameter `$operator` is not used and could be removed. This check looks from parameters that have been defined for a function or method, but which are not used in the method body. Loading history...
112			{
113			$this->conditions[] = ['OR'];
114
115			return call_user_func_array([$this, 'addCondition'], func_get_args());
116			}
117
118			/**
119			* Adds a between condition to the query.
120			*
121			* @param string $field
122			* @param mixed $a first between value
123			* @param mixed $b second between value
124			*
125			* @return self
126			*/
127			public function addBetweenCondition($field, $a, $b)
128			{
129			$this->conditions[] = [$field, 'BETWEEN', $a, $b];
130
131			return $this;
132			}
133
134			/**
135			* Adds a not between condition to the query.
136			*
137			* @param string $field
138			* @param mixed $a first between value
139			* @param mixed $b second between value
140			*
141			* @return self
142			*/
143			public function addNotBetweenCondition($field, $a, $b)
144			{
145			$this->conditions[] = [$field, 'NOT BETWEEN', $a, $b];
146
147			return $this;
148			}
149
150			/**
151			* Gets the conditions for this statement.
152			*
153			* @return array
154			*/
155			public function getConditions()
156			{
157			return $this->conditions;
158			}
159
160			public function build()
161			{
162			// reset the parameterized values
163			$this->values = [];
164
165			// build clause from conditions
166			$clauses = [];
167			foreach ($this->conditions as $condition) {
168			$clauses[] = $this->buildClause($condition);
169			}
170
171			// remove empty values
172			$clauses = array_filter($clauses);
173
174			if (count($clauses) == 0) {
175			return '';
176			}
177
178			$sql = (!$this->having) ? 'WHERE ' : 'HAVING ';
179
180			return $sql.$this->implodeClauses($clauses);
181			}
182
183			/**
184			* Builds a parameterized and escaped SQL fragment
185			* for a condition that uses our own internal
186			* representation.
187			*
188			* A condition is represented by an array, and can be
189			* have one of the following forms:
190			* i) ['SQL fragment']
191			* ii) ['identifier', '=', 'value']
192			* iii) ['identifier', 'BETWEEN', 'value', 'value']
193			*
194			* @param array $cond
195			*
196			* @return string generated SQL fragment
197			*/
198			protected function buildClause(array $cond)
199			{
200			// handle SQL fragments
201			if (count($cond) == 1) {
202			return $cond[0];
203			}
204
205			// escape the identifier
206			$cond[0] = $this->escapeIdentifier($cond[0]);
207			if (empty($cond[0])) {
208			return '';
209			}
210
211			// handle between conditions
212			if ($cond[1] === 'BETWEEN') {
213			return $cond[0].' BETWEEN '.$this->parameterize($cond[2]).' AND '.$this->parameterize($cond[3]);
214			} elseif ($cond[1] === 'NOT BETWEEN') {
215			return $cond[0].' NOT BETWEEN '.$this->parameterize($cond[2]).' AND '.$this->parameterize($cond[3]);
216			}
217
218			// handle NULL values
219			if ($cond[1] === '=' && $cond[2] === null) {
220			return $cond[0].' IS NULL';
221			} elseif ($cond[1] === '<>' && $cond[2] === null) {
222			return $cond[0].' IS NOT NULL';
223			}
224
225			// handle array values, i.e. for IN conditions
226			if (is_array($cond[2])) {
227			foreach ($cond[2] as &$value) {
228			$value = $this->parameterize($value);
229			}
230			$cond[2] = '('.implode(',', $cond[2]).')';
231
232			// otherwise parameterize the value
233			} else {
234			$cond[2] = $this->parameterize($cond[2]);
235			}
236
237			return implode(' ', $cond);
238			}
239
240			protected function implodeClauses(array $clauses)
241			{
242			$str = false;
243			$or = false;
244			foreach ($clauses as $clause) {
245			// an 'OR' token will change the operator used
246			// when concatenating the next clause
247			if ($clause == 'OR') {
248			$or = true;
249			continue;
250			}
251
252			if (!$str) { // first clause needs no operator
253			$str = $clause;
254			} elseif ($or) {
255			$str .= " OR $clause";
256			} else {
257			$str .= " AND $clause";
258			}
259
260			$or = false;
261			}
262
263			return $str;
264			}
265			}
266

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WhereStatement::__construct() A

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