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framework/db/mysql/QueryBuilder.php

Summary

Maintainability
C
1 day
Test Coverage

The class QueryBuilder has 16 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/mysql/QueryBuilder.php by phpmd

Since: PHPMD 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'.

Source: http://phpmd.org/rules/codesize.txt

The class QueryBuilder has an overall complexity of 65 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/mysql/QueryBuilder.php by phpmd

Since: PHPMD 0.2.5

The Weighted Method Count (WMC) of a class is a good indicator of how much time and effort is required to modify and maintain this class. The WMC metric is defined as the sum of complexities of all methods declared in a class. A large number of methods also means that this class has a greater potential impact on derived classes.

Example:

class Foo {
      public function bar() {
          if ($a == $b)  {
              if ($a1 == $b1) {
                  fiddle();
              } elseif ($a2 == $b2) {
                  fiddle();
              } else {
              }
          }
      }
      public function baz() {
          if ($a == $b) {
              if ($a1 == $b1) {
                  fiddle();
              } elseif ($a2 == $b2) {
                  fiddle();
              } else {
              }
          }
      }
      // Several other complex methods
  }

Source: http://phpmd.org/rules/codesize.txt

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

    public function renameColumn($table, $oldName, $newName)
    {
        $quotedTable = $this->db->quoteTableName($table);
        $row = $this->db->createCommand('SHOW CREATE TABLE ' . $quotedTable)->queryOne();
        if ($row === false) {
Severity: Minor
Found in framework/db/mysql/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 getColumnDefinition has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring.
Open

    private function getColumnDefinition($table, $column)
    {
        $quotedTable = $this->db->quoteTableName($table);
        $row = $this->db->createCommand('SHOW CREATE TABLE ' . $quotedTable)->queryOne();
        if ($row === false) {
Severity: Minor
Found in framework/db/mysql/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 prepareInsertValues has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
Open

    protected function prepareInsertValues($table, $columns, $params = [])
    {
        list($names, $placeholders, $values, $params) = parent::prepareInsertValues($table, $columns, $params);
        if (!$columns instanceof Query && empty($names)) {
            $tableSchema = $this->db->getSchema()->getTableSchema($table);
Severity: Minor
Found in framework/db/mysql/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 upsert has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    public function upsert($table, $insertColumns, $updateColumns, &$params)
    {
        $insertSql = $this->insert($table, $insertColumns, $params);
        list($uniqueNames, , $updateNames) = $this->prepareUpsertColumns($table, $insertColumns, $updateColumns);
        if (empty($uniqueNames)) {
Severity: Minor
Found in framework/db/mysql/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 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/mysql/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 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/mysql/QueryBuilder.php by phpmd

Since: PHPMD 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: http://phpmd.org/rules/cleancode.txt

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

    public function createIndex($name, $table, $columns, $unique = false)
Severity: Minor
Found in framework/db/mysql/QueryBuilder.php by phpmd

Since: PHPMD 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: http://phpmd.org/rules/cleancode.txt

Avoid unused parameters such as '$table'.
Open

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

Since: PHPMD 0.2

Avoid passing parameters to methods or constructors and then not using those parameters.

Example:

class Foo
  {
      private function bar($howdy)
      {
          // $howdy is not used
      }
  }

Source: http://phpmd.org/rules/unusedcode.txt

Avoid unused parameters such as '$schema'.
Open

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

Since: PHPMD 0.2

Avoid passing parameters to methods or constructors and then not using those parameters.

Example:

class Foo
  {
      private function bar($howdy)
      {
          // $howdy is not used
      }
  }

Source: http://phpmd.org/rules/unusedcode.txt

Avoid unused parameters such as '$name'.
Open

    public function dropPrimaryKey($name, $table)
Severity: Minor
Found in framework/db/mysql/QueryBuilder.php by phpmd

Since: PHPMD 0.2

Avoid passing parameters to methods or constructors and then not using those parameters.

Example:

class Foo
  {
      private function bar($howdy)
      {
          // $howdy is not used
      }
  }

Source: http://phpmd.org/rules/unusedcode.txt

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

    protected function prepareInsertValues($table, $columns, $params = [])
    {
        list($names, $placeholders, $values, $params) = parent::prepareInsertValues($table, $columns, $params);
        if (!$columns instanceof Query && empty($names)) {
            $tableSchema = $this->db->getSchema()->getTableSchema($table);
Severity: Major
Found in framework/db/mysql/QueryBuilder.php and 1 other location - About 5 hrs to fix
framework/db/oci/QueryBuilder.php on lines 194..208

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 164.

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

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

        $alterSql = 'ALTER TABLE ' . $this->db->quoteTableName($table)
            . ' CHANGE ' . $this->db->quoteColumnName($column)
            . ' ' . $this->db->quoteColumnName($column)
            . (empty($definition) ? '' : ' ' . $definition)
            . ' COMMENT ' . $this->db->quoteValue($comment);
Severity: Minor
Found in framework/db/mysql/QueryBuilder.php and 1 other location - About 40 mins to fix
framework/db/cubrid/QueryBuilder.php on lines 226..230

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 78.

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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