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framework/db/mssql/QueryBuilder.php

Summary

Maintainability
C
1 day
Test Coverage

The class QueryBuilder has an overall complexity of 96 which is very high. The configured complexity threshold is 50.
Open

class QueryBuilder extends \yii\db\QueryBuilder
{
    /**
     * @var array mapping from abstract column types (keys) to physical column types (values).
     */
Severity: Minor
Found in framework/db/mssql/QueryBuilder.php by phpmd

The class QueryBuilder has 17 public methods. Consider refactoring QueryBuilder to keep number of public methods under 10.
Open

class QueryBuilder extends \yii\db\QueryBuilder
{
    /**
     * @var array mapping from abstract column types (keys) to physical column types (values).
     */
Severity: Minor
Found in framework/db/mssql/QueryBuilder.php by phpmd

TooManyPublicMethods

Since: 0.1

A class with too many public methods is probably a good suspect for refactoring, in order to reduce its complexity and find a way to have more fine grained objects.

By default it ignores methods starting with 'get' or 'set'.

Example

Source https://phpmd.org/rules/codesize.html#toomanypublicmethods

Function upsert has a Cognitive Complexity of 16 (exceeds 5 allowed). Consider refactoring.
Open

    public function upsert($table, $insertColumns, $updateColumns, &$params)
    {
        $insertColumns = $this->normalizeTableRowData($table, $insertColumns, $params);

        /** @var Constraint[] $constraints */
Severity: Minor
Found in framework/db/mssql/QueryBuilder.php - About 2 hrs to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function insert has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring.
Open

    public function insert($table, $columns, &$params)
    {
        $columns = $this->normalizeTableRowData($table, $columns, $params);

        $version2005orLater = version_compare($this->db->getSchema()->getServerVersion(), '9', '>=');
Severity: Minor
Found in framework/db/mssql/QueryBuilder.php - About 55 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function normalizeTableRowData has a Cognitive Complexity of 8 (exceeds 5 allowed). Consider refactoring.
Open

    private function normalizeTableRowData($table, $columns, &$params)
    {
        if (($tableSchema = $this->db->getSchema()->getTableSchema($table)) !== null) {
            $columnSchemas = $tableSchema->columns;
            foreach ($columns as $name => $value) {
Severity: Minor
Found in framework/db/mssql/QueryBuilder.php - About 45 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function alterColumn has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
Open

    public function alterColumn($table, $column, $type)
    {
        $sqlAfter = [$this->dropConstraintsForColumn($table, $column, 'D')];

        $columnName = $this->db->quoteColumnName($column);
Severity: Minor
Found in framework/db/mssql/QueryBuilder.php - About 35 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function resetSequence has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    public function resetSequence($tableName, $value = null)
    {
        $table = $this->db->getTableSchema($tableName);
        if ($table !== null && $table->sequenceName !== null) {
            $tableName = $this->db->quoteTableName($tableName);
Severity: Minor
Found in framework/db/mssql/QueryBuilder.php - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function oldBuildOrderByAndLimit has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    protected function oldBuildOrderByAndLimit($sql, $orderBy, $limit, $offset)
    {
        $orderBy = $this->buildOrderBy($orderBy);
        if ($orderBy === '') {
            // ROW_NUMBER() requires an ORDER BY clause
Severity: Minor
Found in framework/db/mssql/QueryBuilder.php - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

The method insert() has an NPath complexity of 360. The configured NPath complexity threshold is 200.
Open

    public function insert($table, $columns, &$params)
    {
        $columns = $this->normalizeTableRowData($table, $columns, $params);

        $version2005orLater = version_compare($this->db->getSchema()->getServerVersion(), '9', '>=');
Severity: Minor
Found in framework/db/mssql/QueryBuilder.php by phpmd

NPathComplexity

Since: 0.1

The NPath complexity of a method is the number of acyclic execution paths through that method. A threshold of 200 is generally considered the point where measures should be taken to reduce complexity.

Example

class Foo {
    function bar() {
        // lots of complicated code
    }
}

Source https://phpmd.org/rules/codesize.html#npathcomplexity

The method upsert() has an NPath complexity of 1152. The configured NPath complexity threshold is 200.
Open

    public function upsert($table, $insertColumns, $updateColumns, &$params)
    {
        $insertColumns = $this->normalizeTableRowData($table, $insertColumns, $params);

        /** @var Constraint[] $constraints */
Severity: Minor
Found in framework/db/mssql/QueryBuilder.php by phpmd

NPathComplexity

Since: 0.1

The NPath complexity of a method is the number of acyclic execution paths through that method. A threshold of 200 is generally considered the point where measures should be taken to reduce complexity.

Example

class Foo {
    function bar() {
        // lots of complicated code
    }
}

Source https://phpmd.org/rules/codesize.html#npathcomplexity

The method insert() has a Cyclomatic Complexity of 12. The configured cyclomatic complexity threshold is 10.
Open

    public function insert($table, $columns, &$params)
    {
        $columns = $this->normalizeTableRowData($table, $columns, $params);

        $version2005orLater = version_compare($this->db->getSchema()->getServerVersion(), '9', '>=');
Severity: Minor
Found in framework/db/mssql/QueryBuilder.php by phpmd

CyclomaticComplexity

Since: 0.1

Complexity is determined by the number of decision points in a method plus one for the method entry. The decision points are 'if', 'while', 'for', and 'case labels'. Generally, 1-4 is low complexity, 5-7 indicates moderate complexity, 8-10 is high complexity, and 11+ is very high complexity.

Example

// Cyclomatic Complexity = 11
class Foo {
1   public function example() {
2       if ($a == $b) {
3           if ($a1 == $b1) {
                fiddle();
4           } elseif ($a2 == $b2) {
                fiddle();
            } else {
                fiddle();
            }
5       } elseif ($c == $d) {
6           while ($c == $d) {
                fiddle();
            }
7        } elseif ($e == $f) {
8           for ($n = 0; $n < $h; $n++) {
                fiddle();
            }
        } else {
            switch ($z) {
9               case 1:
                    fiddle();
                    break;
10              case 2:
                    fiddle();
                    break;
11              case 3:
                    fiddle();
                    break;
                default:
                    fiddle();
                    break;
            }
        }
    }
}

Source https://phpmd.org/rules/codesize.html#cyclomaticcomplexity

The method upsert() has a Cyclomatic Complexity of 13. The configured cyclomatic complexity threshold is 10.
Open

    public function upsert($table, $insertColumns, $updateColumns, &$params)
    {
        $insertColumns = $this->normalizeTableRowData($table, $insertColumns, $params);

        /** @var Constraint[] $constraints */
Severity: Minor
Found in framework/db/mssql/QueryBuilder.php by phpmd

CyclomaticComplexity

Since: 0.1

Complexity is determined by the number of decision points in a method plus one for the method entry. The decision points are 'if', 'while', 'for', and 'case labels'. Generally, 1-4 is low complexity, 5-7 indicates moderate complexity, 8-10 is high complexity, and 11+ is very high complexity.

Example

// Cyclomatic Complexity = 11
class Foo {
1   public function example() {
2       if ($a == $b) {
3           if ($a1 == $b1) {
                fiddle();
4           } elseif ($a2 == $b2) {
                fiddle();
            } else {
                fiddle();
            }
5       } elseif ($c == $d) {
6           while ($c == $d) {
                fiddle();
            }
7        } elseif ($e == $f) {
8           for ($n = 0; $n < $h; $n++) {
                fiddle();
            }
        } else {
            switch ($z) {
9               case 1:
                    fiddle();
                    break;
10              case 2:
                    fiddle();
                    break;
11              case 3:
                    fiddle();
                    break;
                default:
                    fiddle();
                    break;
            }
        }
    }
}

Source https://phpmd.org/rules/codesize.html#cyclomaticcomplexity

The method checkIntegrity has a boolean flag argument $check, which is a certain sign of a Single Responsibility Principle violation.
Open

    public function checkIntegrity($check = true, $schema = '', $table = '')
Severity: Minor
Found in framework/db/mssql/QueryBuilder.php by phpmd

BooleanArgumentFlag

Since: 1.4.0

A boolean flag argument is a reliable indicator for a violation of the Single Responsibility Principle (SRP). You can fix this problem by extracting the logic in the boolean flag into its own class or method.

Example

class Foo {
    public function bar($flag = true) {
    }
}

Source https://phpmd.org/rules/cleancode.html#booleanargumentflag

Avoid assigning values to variables in if clauses and the like (line '459', column '14').
Open

    private function normalizeTableRowData($table, $columns, &$params)
    {
        if (($tableSchema = $this->db->getSchema()->getTableSchema($table)) !== null) {
            $columnSchemas = $tableSchema->columns;
            foreach ($columns as $name => $value) {
Severity: Minor
Found in framework/db/mssql/QueryBuilder.php by phpmd

IfStatementAssignment

Since: 2.7.0

Assignments in if clauses and the like are considered a code smell. Assignments in PHP return the right operand as their result. In many cases, this is an expected behavior, but can lead to many difficult to spot bugs, especially when the right operand could result in zero, null or an empty string and the like.

Example

class Foo
{
    public function bar($flag)
    {
        if ($foo = 'bar') { // possible typo
            // ...
        }
        if ($baz = 0) { // always false
            // ...
        }
    }
}

Source http://phpmd.org/rules/cleancode.html#ifstatementassignment

Similar blocks of code found in 4 locations. Consider refactoring.
Open

    public $typeMap = [
        Schema::TYPE_PK => 'int IDENTITY PRIMARY KEY',
        Schema::TYPE_UPK => 'int IDENTITY PRIMARY KEY',
        Schema::TYPE_BIGPK => 'bigint IDENTITY PRIMARY KEY',
        Schema::TYPE_UBIGPK => 'bigint IDENTITY PRIMARY KEY',
Severity: Major
Found in framework/db/mssql/QueryBuilder.php and 3 other locations - About 4 hrs to fix
framework/db/cubrid/QueryBuilder.php on lines 27..49
framework/db/oci/QueryBuilder.php on lines 30..52
framework/db/sqlite/QueryBuilder.php on lines 30..52

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 175.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 2 locations. Consider refactoring.
Open

        $mergeSql = 'MERGE ' . $this->db->quoteTableName($table) . ' WITH (HOLDLOCK) '
            . 'USING (' . (!empty($placeholders) ? 'VALUES (' . implode(', ', $placeholders) . ')' : ltrim($values, ' ')) . ') AS [EXCLUDED] (' . implode(', ', $insertNamesUsing) . ') '
            . "ON ($on)";
Severity: Minor
Found in framework/db/mssql/QueryBuilder.php and 1 other location - About 55 mins to fix
framework/db/cubrid/QueryBuilder.php on lines 90..92

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 99.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 4 locations. Consider refactoring.
Open

        if ($updateColumns === true) {
            $updateColumns = [];
            foreach ($updateNames as $name) {
                $quotedName = $this->db->quoteColumnName($name);
                if (strrpos($quotedName, '.') === false) {
Severity: Major
Found in framework/db/mssql/QueryBuilder.php and 3 other locations - About 35 mins to fix
framework/db/cubrid/QueryBuilder.php on lines 107..116
framework/db/oci/QueryBuilder.php on lines 265..274
framework/db/pgsql/QueryBuilder.php on lines 425..434

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 92.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

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