QueryBuilder::selectExists() - Code Metrics - Inspection of "Merged branch 'master' into 2.1" - yiisoft/yii2 - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — 2.1 ( 7c8525...0afc41 )

by Alexander

created 2017-06-09 21:39 UTC

QueryBuilder::selectExists() A

↳ Parent: QueryBuilder

Complexity

Conditions	1
Paths	1

Size

Total Lines	4
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	2

Importance

Changes

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

<?php
/**
 * @link http://www.yiiframework.com/
 * @copyright Copyright (c) 2008 Yii Software LLC
 * @license http://www.yiiframework.com/license/
 */

namespace yii\db\oci;

use yii\base\InvalidArgumentException;
use yii\db\Connection;
use yii\db\Exception;
use yii\db\Expression;

/**
 * QueryBuilder is the query builder for Oracle databases.
 *
 * @author Qiang Xue <[email protected]>
 * @since 2.0
 */
class QueryBuilder extends \yii\db\QueryBuilder
{
    /**
     * @var array mapping from abstract column types (keys) to physical column types (values).
     */
    public $typeMap = [
        Schema::TYPE_PK => 'NUMBER(10) NOT NULL PRIMARY KEY',
        Schema::TYPE_UPK => 'NUMBER(10) UNSIGNED NOT NULL PRIMARY KEY',
        Schema::TYPE_BIGPK => 'NUMBER(20) NOT NULL PRIMARY KEY',
        Schema::TYPE_UBIGPK => 'NUMBER(20) UNSIGNED NOT NULL PRIMARY KEY',
        Schema::TYPE_CHAR => 'CHAR(1)',
        Schema::TYPE_STRING => 'VARCHAR2(255)',
        Schema::TYPE_TEXT => 'CLOB',
        Schema::TYPE_SMALLINT => 'NUMBER(5)',
        Schema::TYPE_INTEGER => 'NUMBER(10)',
        Schema::TYPE_BIGINT => 'NUMBER(20)',
        Schema::TYPE_FLOAT => 'NUMBER',
        Schema::TYPE_DOUBLE => 'NUMBER',
        Schema::TYPE_DECIMAL => 'NUMBER',
        Schema::TYPE_DATETIME => 'TIMESTAMP',
        Schema::TYPE_TIMESTAMP => 'TIMESTAMP',
        Schema::TYPE_TIME => 'TIMESTAMP',
        Schema::TYPE_DATE => 'DATE',
        Schema::TYPE_BINARY => 'BLOB',
        Schema::TYPE_BOOLEAN => 'NUMBER(1)',
        Schema::TYPE_MONEY => 'NUMBER(19,4)',
    ];

    /**
     * @inheritdoc
     */
    protected $likeEscapeCharacter = '!';
    /**
     * `\` is initialized in [[buildLikeCondition()]] method since
     * we need to choose replacement value based on [[\yii\db\Schema::quoteValue()]].
     * @inheritdoc
     */
    protected $likeEscapingReplacements = [
        '%' => '!%',
        '_' => '!_',
        '!' => '!!',
    ];


    /**
     * @inheritdoc
     */
    public function buildOrderByAndLimit($sql, $orderBy, $limit, $offset, &$params)
    {
        $orderBy = $this->buildOrderBy($orderBy, $params);
        if ($orderBy !== '') {
            $sql .= $this->separator . $orderBy;
        }

        $filters = [];
        if ($this->hasOffset($offset)) {
            $filters[] = 'rowNumId > ' . $offset;
        }
        if ($this->hasLimit($limit)) {
            $filters[] = 'rownum <= ' . $limit;
        }
        if (empty($filters)) {
            return $sql;
        }

        $filter = implode(' AND ', $filters);
        return <<<EOD
WITH USER_SQL AS ($sql),
    PAGINATION AS (SELECT USER_SQL.*, rownum as rowNumId FROM USER_SQL)
SELECT *
FROM PAGINATION
WHERE $filter
EOD;
    }

    /**
     * Builds a SQL statement for renaming a DB table.
     *
     * @param string $table the table to be renamed. The name will be properly quoted by the method.
     * @param string $newName the new table name. The name will be properly quoted by the method.
     * @return string the SQL statement for renaming a DB table.
     */
    public function renameTable($table, $newName)
    {
        return 'ALTER TABLE ' . $this->db->quoteTableName($table) . ' RENAME TO ' . $this->db->quoteTableName($newName);
    }

    /**
     * Builds a SQL statement for changing the definition of a column.
     *
     * @param string $table the table whose column is to be changed. The table name will be properly quoted by the method.
     * @param string $column the name of the column to be changed. The name will be properly quoted by the method.
     * @param string $type the new column type. The [[getColumnType]] method will be invoked to convert abstract column type (if any)
     * into the physical one. Anything that is not recognized as abstract type will be kept in the generated SQL.
     * For example, 'string' will be turned into 'varchar(255)', while 'string not null' will become 'varchar(255) not null'.
     * @return string the SQL statement for changing the definition of a column.
     */
    public function alterColumn($table, $column, $type)
    {
        $type = $this->getColumnType($type);

        return 'ALTER TABLE ' . $this->db->quoteTableName($table) . ' MODIFY ' . $this->db->quoteColumnName($column) . ' ' . $this->getColumnType($type);
    }

    /**
     * Builds a SQL statement for dropping an index.
     *
     * @param string $name the name of the index to be dropped. The name will be properly quoted by the method.
     * @param string $table the table whose index is to be dropped. The name will be properly quoted by the method.
     * @return string the SQL statement for dropping an index.
     */
    public function dropIndex($name, $table)
    {
        return 'DROP INDEX ' . $this->db->quoteTableName($name);
    }

    /**
     * @inheritdoc
     */
    public function resetSequence($table, $value = null)
    {
        $tableSchema = $this->db->getTableSchema($table);
        if ($tableSchema === null) {
            throw new InvalidArgumentException("Unknown table: $table");
        }
        if ($tableSchema->sequenceName === null) {
            return '';
        }

        if ($value !== null) {
            $value = (int) $value;
        } else {
            // use master connection to get the biggest PK value
            $value = $this->db->useMaster(function (Connection $db) use ($tableSchema) {
                return $db->createCommand("SELECT MAX(\"{$tableSchema->primaryKey}\") FROM \"{$tableSchema->name}\"")->queryScalar();
            }) + 1;
        }

        return "DROP SEQUENCE \"{$tableSchema->name}_SEQ\";"
            . "CREATE SEQUENCE \"{$tableSchema->name}_SEQ\" START WITH {$value} INCREMENT BY 1 NOMAXVALUE NOCACHE";
    }

    /**
     * @inheritdoc
     */
    public function addForeignKey($name, $table, $columns, $refTable, $refColumns, $delete = null, $update = null)
    {
        $sql = 'ALTER TABLE ' . $this->db->quoteTableName($table)
            . ' ADD CONSTRAINT ' . $this->db->quoteColumnName($name)
            . ' FOREIGN KEY (' . $this->buildColumns($columns) . ')'
            . ' REFERENCES ' . $this->db->quoteTableName($refTable)
            . ' (' . $this->buildColumns($refColumns) . ')';
        if ($delete !== null) {
            $sql .= ' ON DELETE ' . $delete;
        }
        if ($update !== null) {
            throw new Exception('Oracle does not support ON UPDATE clause.');
        }

        return $sql;
    }

    /**
     * @inheritdoc
     */
    public function insert($table, $columns, &$params)
    {
        $schema = $this->db->getSchema();
        if (($tableSchema = $schema->getTableSchema($table)) !== null) {
            $columnSchemas = $tableSchema->columns;
        } else {
            $columnSchemas = [];
        }
        $names = [];
        $placeholders = [];
        $values = ' DEFAULT VALUES';
        if ($columns instanceof \yii\db\Query) {
            list($names, $values, $params) = $this->prepareInsertSelectSubQuery($columns, $schema, $params);
        } else {
            foreach ($columns as $name => $value) {
                $names[] = $schema->quoteColumnName($name);
                if ($value instanceof Expression) {
                    $placeholders[] = $value->expression;
                    foreach ($value->params as $n => $v) {
                        $params[$n] = $v;
                    }
                } elseif ($value instanceof \yii\db\Query) {
                    list($sql, $params) = $this->build($value, $params);
                    $placeholders[] = "($sql)";
                } else {
                    $phName = self::PARAM_PREFIX . count($params);
                    $placeholders[] = $phName;
                    $params[$phName] = !is_array($value) && isset($columnSchemas[$name]) ? $columnSchemas[$name]->dbTypecast($value) : $value;
                }
            }
            if (empty($names) && $tableSchema !== null) {
                $columns = !empty($tableSchema->primaryKey) ? $tableSchema->primaryKey : [reset($tableSchema->columns)->name];
                foreach ($columns as $name) {
                    $names[] = $schema->quoteColumnName($name);
                    $placeholders[] = 'DEFAULT';
                }
            }
        }

        return 'INSERT INTO ' . $schema->quoteTableName($table)
            . (!empty($names) ? ' (' . implode(', ', $names) . ')' : '')
            . (!empty($placeholders) ? ' VALUES (' . implode(', ', $placeholders) . ')' : $values);
    }

    /**
     * Generates a batch INSERT SQL statement.
     * For example,
     *
     * ```php
     * $sql = $queryBuilder->batchInsert('user', ['name', 'age'], [
     *     ['Tom', 30],
     *     ['Jane', 20],
     *     ['Linda', 25],
     * ]);
     * ```
     *
     * Note that the values in each row must match the corresponding column names.
     *
     * @param string $table the table that new rows will be inserted into.
     * @param array $columns the column names
     * @param array $rows the rows to be batch inserted into the table
     * @return string the batch INSERT SQL statement
     */
    public function batchInsert($table, $columns, $rows)
    {
        if (empty($rows)) {
            return '';
        }

        $schema = $this->db->getSchema();
        if (($tableSchema = $schema->getTableSchema($table)) !== null) {
            $columnSchemas = $tableSchema->columns;
        } else {
            $columnSchemas = [];
        }

        $values = [];
        foreach ($rows as $row) {
            $vs = [];
            foreach ($row as $i => $value) {
                if (isset($columns[$i], $columnSchemas[$columns[$i]]) && !is_array($value)) {
                    $value = $columnSchemas[$columns[$i]]->dbTypecast($value);
                }
                if (is_string($value)) {
                    $value = $schema->quoteValue($value);
                } elseif ($value === false) {
                    $value = 0;
                } elseif ($value === null) {
                    $value = 'NULL';
                }
                $vs[] = $value;
            }
            $values[] = '(' . implode(', ', $vs) . ')';
        }
        if (empty($values)) {
            return '';
        }

        foreach ($columns as $i => $name) {
            $columns[$i] = $schema->quoteColumnName($name);
        }

        $tableAndColumns = ' INTO ' . $schema->quoteTableName($table)
        . ' (' . implode(', ', $columns) . ') VALUES ';

        return 'INSERT ALL ' . $tableAndColumns . implode($tableAndColumns, $values) . ' SELECT 1 FROM SYS.DUAL';
    }

    /**
     * @inheritdoc
     * @since 2.0.8
     */
    public function selectExists($rawSql)
    {
        return 'SELECT CASE WHEN EXISTS(' . $rawSql . ') THEN 1 ELSE 0 END FROM DUAL';
    }

    /**
     * @inheritdoc
     * @since 2.0.8
     */
    public function dropCommentFromColumn($table, $column)
    {
        return 'COMMENT ON COLUMN ' . $this->db->quoteTableName($table) . '.' . $this->db->quoteColumnName($column) . " IS ''";
    }

    /**
     * @inheritdoc
     * @since 2.0.8
     */
    public function dropCommentFromTable($table)
    {
        return 'COMMENT ON TABLE ' . $this->db->quoteTableName($table) . " IS ''";
    }

    /**
     * @inheritDoc
     */
    public function buildLikeCondition($operator, $operands, &$params)
    {
        if (!isset($this->likeEscapingReplacements['\\'])) {
            /*
             * Different pdo_oci8 versions may or may not implement PDO::quote(), so
             * yii\db\Schema::quoteValue() may or may not quote \.
             */
            $this->likeEscapingReplacements['\\'] = substr($this->db->quoteValue('\\'), 1, -1);
        }
        return parent::buildLikeCondition($operator, $operands, $params);
    }

    /**
     * @inheritdoc
     */
    public function buildInCondition($operator, $operands, &$params)
    {
        $splitCondition = $this->splitInCondition($operator, $operands, $params);
        if ($splitCondition !== null) {
            return $splitCondition;
        }

        return parent::buildInCondition($operator, $operands, $params);
    }

    /**
     * Oracle DBMS does not support more than 1000 parameters in `IN` condition.
     * This method splits long `IN` condition into series of smaller ones.
     *
     * @param string $operator
     * @param array $operands
     * @param array $params
     * @return null|string null when split is not required. Otherwise - built SQL condition.
     * @throws Exception
     * @since 2.0.12
     */
    protected function splitInCondition($operator, $operands, &$params)
    {
        if (!isset($operands[0], $operands[1])) {
            throw new Exception("Operator '$operator' requires two operands.");
        }

        list($column, $values) = $operands;

        if ($values instanceof \Traversable) {
            $values = iterator_to_array($values);
        }

        if (!is_array($values)) {
            return null;
        }

        $maxParameters = 1000;
        $count = count($values);
        if ($count <= $maxParameters) {
            return null;
        }

        $condition = [($operator === 'IN') ? 'OR' : 'AND'];
        for ($i = 0; $i < $count; $i += $maxParameters) {
            $condition[] = [$operator, $column, array_slice($values, $i, $maxParameters)];
        }

        return $this->buildCondition(['AND', $condition], $params);
    }

}


1			<?php
2			/**
3			* @link http://www.yiiframework.com/
4			* @copyright Copyright (c) 2008 Yii Software LLC
5			* @license http://www.yiiframework.com/license/
6			*/
7
8			namespace yii\db\oci;
9
10			use yii\base\InvalidArgumentException;
11			use yii\db\Connection;
12			use yii\db\Exception;
13			use yii\db\Expression;
14
15			/**
16			* QueryBuilder is the query builder for Oracle databases.
17			*
18			* @author Qiang Xue <[email protected]>
19			* @since 2.0
20			*/
21			class QueryBuilder extends \yii\db\QueryBuilder
22			{
23			/**
24			* @var array mapping from abstract column types (keys) to physical column types (values).
25			*/
26			public $typeMap = [
27			Schema::TYPE_PK => 'NUMBER(10) NOT NULL PRIMARY KEY',
28			Schema::TYPE_UPK => 'NUMBER(10) UNSIGNED NOT NULL PRIMARY KEY',
29			Schema::TYPE_BIGPK => 'NUMBER(20) NOT NULL PRIMARY KEY',
30			Schema::TYPE_UBIGPK => 'NUMBER(20) UNSIGNED NOT NULL PRIMARY KEY',
31			Schema::TYPE_CHAR => 'CHAR(1)',
32			Schema::TYPE_STRING => 'VARCHAR2(255)',
33			Schema::TYPE_TEXT => 'CLOB',
34			Schema::TYPE_SMALLINT => 'NUMBER(5)',
35			Schema::TYPE_INTEGER => 'NUMBER(10)',
36			Schema::TYPE_BIGINT => 'NUMBER(20)',
37			Schema::TYPE_FLOAT => 'NUMBER',
38			Schema::TYPE_DOUBLE => 'NUMBER',
39			Schema::TYPE_DECIMAL => 'NUMBER',
40			Schema::TYPE_DATETIME => 'TIMESTAMP',
41			Schema::TYPE_TIMESTAMP => 'TIMESTAMP',
42			Schema::TYPE_TIME => 'TIMESTAMP',
43			Schema::TYPE_DATE => 'DATE',
44			Schema::TYPE_BINARY => 'BLOB',
45			Schema::TYPE_BOOLEAN => 'NUMBER(1)',
46			Schema::TYPE_MONEY => 'NUMBER(19,4)',
47			];
48
49			/**
50			* @inheritdoc
51			*/
52			protected $likeEscapeCharacter = '!';
53			/**
54			* `\` is initialized in [[buildLikeCondition()]] method since
55			* we need to choose replacement value based on [[\yii\db\Schema::quoteValue()]].
56			* @inheritdoc
57			*/
58			protected $likeEscapingReplacements = [
59			'%' => '!%',
60			'_' => '!_',
61			'!' => '!!',
62			];
63
64
65			/**
66			* @inheritdoc
67			*/
68			public function buildOrderByAndLimit($sql, $orderBy, $limit, $offset, &$params)
69			{
70			$orderBy = $this->buildOrderBy($orderBy, $params);
71			if ($orderBy !== '') {
72			$sql .= $this->separator . $orderBy;
73			}
74
75			$filters = [];
76			if ($this->hasOffset($offset)) {
77			$filters[] = 'rowNumId > ' . $offset;
78			}
79			if ($this->hasLimit($limit)) {
80			$filters[] = 'rownum <= ' . $limit;
81			}
82			if (empty($filters)) {
83			return $sql;
84			}
85
86			$filter = implode(' AND ', $filters);
87			return <<<EOD
88			WITH USER_SQL AS ($sql),
89			PAGINATION AS (SELECT USER_SQL.*, rownum as rowNumId FROM USER_SQL)
90			SELECT *
91			FROM PAGINATION
92			WHERE $filter
93			EOD;
94			}
95
96			/**
97			* Builds a SQL statement for renaming a DB table.
98			*
99			* @param string $table the table to be renamed. The name will be properly quoted by the method.
100			* @param string $newName the new table name. The name will be properly quoted by the method.
101			* @return string the SQL statement for renaming a DB table.
102			*/
103			public function renameTable($table, $newName)
104			{
105			return 'ALTER TABLE ' . $this->db->quoteTableName($table) . ' RENAME TO ' . $this->db->quoteTableName($newName);
106			}
107
108			/**
109			* Builds a SQL statement for changing the definition of a column.
110			*
111			* @param string $table the table whose column is to be changed. The table name will be properly quoted by the method.
112			* @param string $column the name of the column to be changed. The name will be properly quoted by the method.
113			* @param string $type the new column type. The [[getColumnType]] method will be invoked to convert abstract column type (if any)
114			* into the physical one. Anything that is not recognized as abstract type will be kept in the generated SQL.
115			* For example, 'string' will be turned into 'varchar(255)', while 'string not null' will become 'varchar(255) not null'.
116			* @return string the SQL statement for changing the definition of a column.
117			*/
118			public function alterColumn($table, $column, $type)
119			{
120			$type = $this->getColumnType($type);
121
122			return 'ALTER TABLE ' . $this->db->quoteTableName($table) . ' MODIFY ' . $this->db->quoteColumnName($column) . ' ' . $this->getColumnType($type);
123			}
124
125			/**
126			* Builds a SQL statement for dropping an index.
127			*
128			* @param string $name the name of the index to be dropped. The name will be properly quoted by the method.
129			* @param string $table the table whose index is to be dropped. The name will be properly quoted by the method.
130			* @return string the SQL statement for dropping an index.
131			*/
132			public function dropIndex($name, $table)
133			{
134			return 'DROP INDEX ' . $this->db->quoteTableName($name);
135			}
136
137			/**
138			* @inheritdoc
139			*/
140			public function resetSequence($table, $value = null)
141			{
142			$tableSchema = $this->db->getTableSchema($table);
143			if ($tableSchema === null) {
144			throw new InvalidArgumentException("Unknown table: $table");
145			}
146			if ($tableSchema->sequenceName === null) {
147			return '';
148			}
149
150			if ($value !== null) {
151			$value = (int) $value;
152			} else {
153			// use master connection to get the biggest PK value
154			$value = $this->db->useMaster(function (Connection $db) use ($tableSchema) {
155			return $db->createCommand("SELECT MAX(\"{$tableSchema->primaryKey}\") FROM \"{$tableSchema->name}\"")->queryScalar();
156			}) + 1;
157			}
158
159			return "DROP SEQUENCE \"{$tableSchema->name}_SEQ\";"
160			. "CREATE SEQUENCE \"{$tableSchema->name}_SEQ\" START WITH {$value} INCREMENT BY 1 NOMAXVALUE NOCACHE";
161			}
162
163			/**
164			* @inheritdoc
165			*/
166			public function addForeignKey($name, $table, $columns, $refTable, $refColumns, $delete = null, $update = null)
167			{
168			$sql = 'ALTER TABLE ' . $this->db->quoteTableName($table)
169			. ' ADD CONSTRAINT ' . $this->db->quoteColumnName($name)
170			. ' FOREIGN KEY (' . $this->buildColumns($columns) . ')'
171			. ' REFERENCES ' . $this->db->quoteTableName($refTable)
172			. ' (' . $this->buildColumns($refColumns) . ')';
173			if ($delete !== null) {
174			$sql .= ' ON DELETE ' . $delete;
175			}
176			if ($update !== null) {
177			throw new Exception('Oracle does not support ON UPDATE clause.');
178			}
179
180			return $sql;
181			}
182
183			/**
184			* @inheritdoc
185			*/
186			public function insert($table, $columns, &$params)
187			{
188			$schema = $this->db->getSchema();
189			if (($tableSchema = $schema->getTableSchema($table)) !== null) {
190			$columnSchemas = $tableSchema->columns;
191			} else {
192			$columnSchemas = [];
193			}
194			$names = [];
195			$placeholders = [];
196			$values = ' DEFAULT VALUES';
197			if ($columns instanceof \yii\db\Query) {
198			list($names, $values, $params) = $this->prepareInsertSelectSubQuery($columns, $schema, $params);
199			} else {
200			foreach ($columns as $name => $value) {
201			$names[] = $schema->quoteColumnName($name);
202			if ($value instanceof Expression) {
203			$placeholders[] = $value->expression;
204			foreach ($value->params as $n => $v) {
205			$params[$n] = $v;
206			}
207			} elseif ($value instanceof \yii\db\Query) {
208			list($sql, $params) = $this->build($value, $params);
209			$placeholders[] = "($sql)";
210			} else {
211			$phName = self::PARAM_PREFIX . count($params);
212			$placeholders[] = $phName;
213			$params[$phName] = !is_array($value) && isset($columnSchemas[$name]) ? $columnSchemas[$name]->dbTypecast($value) : $value;
214			}
215			}
216			if (empty($names) && $tableSchema !== null) {
217			$columns = !empty($tableSchema->primaryKey) ? $tableSchema->primaryKey : [reset($tableSchema->columns)->name];
218			foreach ($columns as $name) {
219			$names[] = $schema->quoteColumnName($name);
220			$placeholders[] = 'DEFAULT';
221			}
222			}
223			}
224
225			return 'INSERT INTO ' . $schema->quoteTableName($table)
226			. (!empty($names) ? ' (' . implode(', ', $names) . ')' : '')
227			. (!empty($placeholders) ? ' VALUES (' . implode(', ', $placeholders) . ')' : $values);
228			}
229
230			/**
231			* Generates a batch INSERT SQL statement.
232			* For example,
233			*
234			* ```php
235			* $sql = $queryBuilder->batchInsert('user', ['name', 'age'], [
236			* ['Tom', 30],
237			* ['Jane', 20],
238			* ['Linda', 25],
239			* ]);
240			* ```
241			*
242			* Note that the values in each row must match the corresponding column names.
243			*
244			* @param string $table the table that new rows will be inserted into.
245			* @param array $columns the column names
246			* @param array $rows the rows to be batch inserted into the table
247			* @return string the batch INSERT SQL statement
248			*/
249			public function batchInsert($table, $columns, $rows)
250			{
251			if (empty($rows)) {
252			return '';
253			}
254
255			$schema = $this->db->getSchema();
256			if (($tableSchema = $schema->getTableSchema($table)) !== null) {
257			$columnSchemas = $tableSchema->columns;
258			} else {
259			$columnSchemas = [];
260			}
261
262			$values = [];
263			foreach ($rows as $row) {
264			$vs = [];
265			foreach ($row as $i => $value) {
266			if (isset($columns[$i], $columnSchemas[$columns[$i]]) && !is_array($value)) {
267			$value = $columnSchemas[$columns[$i]]->dbTypecast($value);
268			}
269			if (is_string($value)) {
270			$value = $schema->quoteValue($value);
271			} elseif ($value === false) {
272			$value = 0;
273			} elseif ($value === null) {
274			$value = 'NULL';
275			}
276			$vs[] = $value;
277			}
278			$values[] = '(' . implode(', ', $vs) . ')';
279			}
280			if (empty($values)) {
281			return '';
282			}
283
284			foreach ($columns as $i => $name) {
285			$columns[$i] = $schema->quoteColumnName($name);
286			}
287
288			$tableAndColumns = ' INTO ' . $schema->quoteTableName($table)
289			. ' (' . implode(', ', $columns) . ') VALUES ';
290
291			return 'INSERT ALL ' . $tableAndColumns . implode($tableAndColumns, $values) . ' SELECT 1 FROM SYS.DUAL';
292			}
293
294			/**
295			* @inheritdoc
296			* @since 2.0.8
297			*/
298			public function selectExists($rawSql)
299			{
300			return 'SELECT CASE WHEN EXISTS(' . $rawSql . ') THEN 1 ELSE 0 END FROM DUAL';
301			}
302
303			/**
304			* @inheritdoc
305			* @since 2.0.8
306			*/
307			public function dropCommentFromColumn($table, $column)
308			{
309			return 'COMMENT ON COLUMN ' . $this->db->quoteTableName($table) . '.' . $this->db->quoteColumnName($column) . " IS ''";
310			}
311
312			/**
313			* @inheritdoc
314			* @since 2.0.8
315			*/
316			public function dropCommentFromTable($table)
317			{
318			return 'COMMENT ON TABLE ' . $this->db->quoteTableName($table) . " IS ''";
319			}
320
321			/**
322			* @inheritDoc
323			*/
324			public function buildLikeCondition($operator, $operands, &$params)
325			{
326			if (!isset($this->likeEscapingReplacements['\\'])) {
327			/*
328			* Different pdo_oci8 versions may or may not implement PDO::quote(), so
329			* yii\db\Schema::quoteValue() may or may not quote \.
330			*/
331			$this->likeEscapingReplacements['\\'] = substr($this->db->quoteValue('\\'), 1, -1);
332			}
333			return parent::buildLikeCondition($operator, $operands, $params);
334			}
335
336			/**
337			* @inheritdoc
338			*/
339			public function buildInCondition($operator, $operands, &$params)
340			{
341			$splitCondition = $this->splitInCondition($operator, $operands, $params);
342			if ($splitCondition !== null) {
343			return $splitCondition;
344			}
345
346			return parent::buildInCondition($operator, $operands, $params);
347			}
348
349			/**
350			* Oracle DBMS does not support more than 1000 parameters in `IN` condition.
351			* This method splits long `IN` condition into series of smaller ones.
352			*
353			* @param string $operator
354			* @param array $operands
355			* @param array $params
356			* @return null\|string null when split is not required. Otherwise - built SQL condition.
357			* @throws Exception
358			* @since 2.0.12
359			*/
360			protected function splitInCondition($operator, $operands, &$params)
361			{
362			if (!isset($operands[0], $operands[1])) {
363			throw new Exception("Operator '$operator' requires two operands.");
364			}
365
366			list($column, $values) = $operands;
367
368			if ($values instanceof \Traversable) {
369			$values = iterator_to_array($values);
370			}
371
372			if (!is_array($values)) {
373			return null;
374			}
375
376			$maxParameters = 1000;
377			$count = count($values);
378			if ($count <= $maxParameters) {
379			return null;
380			}
381
382			$condition = [($operator === 'IN') ? 'OR' : 'AND'];
383			for ($i = 0; $i < $count; $i += $maxParameters) {
384			$condition[] = [$operator, $column, array_slice($values, $i, $maxParameters)];
385			}
386
387			return $this->buildCondition(['AND', $condition], $params);
388			}
389
390			}
391

yiisoft / yii2

Push — 2.1 ( 7c8525...0afc41 )

QueryBuilder::selectExists() A

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