Staudenmeir\LaravelAdjacencyList\Query\Grammars\SQLiteGrammar

Complexity

Total Complexity

12

Size/Duplication

Total Lines	141
Duplicated Lines	0 %

Test Coverage

Coverage

100%

Importance

Changes	1
Bugs	0	Features	0

11 Methods

Rating	Name	Duplication	Size	Complexity
A	compileInitialPath()	0	3	1
A	selectPathList()	0	6	1
A	compileRecursivePath()	0	6	2
A	getRecursivePathBindings()	0	3	1
A	compileCycleDetection()	0	6	1
A	compileCycleDetectionInitialSelect()	0	3	1
A	getCycleDetectionBindings()	0	3	1
A	compileCycleDetectionStopConstraint()	0	3	1
A	supportsUnionInRecursiveExpression()	0	3	1
A	compileCycleDetectionRecursiveSelect()	0	3	1
A	compilePivotColumnNullValue()	0	3	1

<?php

namespace Staudenmeir\LaravelAdjacencyList\Query\Grammars;

use Illuminate\Database\Query\Builder;
use Illuminate\Database\Query\Grammars\SQLiteGrammar as Base;

class SQLiteGrammar extends Base implements ExpressionGrammar
{
    use OrdersByPath;

    /**
     * Compile an initial path.
     *
     * @param string $column
     * @param string $alias
     * @return string
     */
    public function compileInitialPath($column, $alias)
    {
        return 'cast(' . $this->wrap($column) . ' as text) as ' . $this->wrap($alias);
    }

    /**
     * Compile a recursive path.
     *
     * @param string $column
     * @param string $alias
     * @param bool $reverse
     * @return string
     */
    public function compileRecursivePath($column, $alias, bool $reverse = false)
    {
        $wrappedColumn = $this->wrap($column);
        $wrappedAlias = $this->wrap($alias);

        return $reverse ? "$wrappedColumn || ? || $wrappedAlias" : "$wrappedAlias || ? || $wrappedColumn";
    }

    /**
     * Get the recursive path bindings.
     *
     * @param string $separator
     * @return array
     */
    public function getRecursivePathBindings($separator)
    {
        return [$separator];
    }

    /**
     * Select a concatenated list of paths.
     *
     * @param \Illuminate\Database\Query\Builder $query
     * @param string $expression
     * @param string $column
     * @param string $pathSeparator
     * @param string $listSeparator
     * @return \Illuminate\Database\Query\Builder
     */
    public function selectPathList(Builder $query, $expression, $column, $pathSeparator, $listSeparator)
    {
        return $query->selectRaw(
            'group_concat(' . $this->wrap($column) . ', ?)',
            [$listSeparator]
        )->from($expression);

$expression of type string is incompatible with the type Closure|Illuminate\Database\Eloquent\Builder|Illuminate\Database\Query\Builder expected by parameter $table of Illuminate\Database\Query\Builder::from().

    }

    /**
     * Compile a pivot column null value.
     *
     * @param string $typeName
     * @param string $type
     * @return string
     */
    public function compilePivotColumnNullValue(string $typeName, string $type): string
    {
        return 'null';
    }

    /**
     * Compile a cycle detection clause.
     *
     * @param string $localKey
     * @param string $path
     * @return string
     */
    public function compileCycleDetection(string $localKey, string $path): string
    {
        $localKey = $this->wrap($localKey);
        $path = $this->wrap($path);

        return "instr($path, $localKey || ?) > 0 or instr($path, ? || $localKey || ?) > 0";
    }

    /**
     * Get the cycle detection bindings.
     *
     * @param string $pathSeparator
     * @return array
     */
    public function getCycleDetectionBindings(string $pathSeparator): array
    {
        return [$pathSeparator, $pathSeparator, $pathSeparator];
    }

    /**
     * Compile the initial select expression for a cycle detection clause.
     *
     * @param string $column
     * @return string
     */
    public function compileCycleDetectionInitialSelect(string $column): string
    {
        return 'false as ' . $this->wrap($column);
    }

    /**
     * Compile the recursive select expression for a cycle detection clause.
     *
     * @param string $sql
     * @param string $column
     * @return string
     */
    public function compileCycleDetectionRecursiveSelect(string $sql, string $column): string
    {
        return $sql;
    }

    /**
     * Compile the stop constraint for a cycle detection clause.
     *
     * @param string $column
     * @return string
     */
    public function compileCycleDetectionStopConstraint(string $column): string
    {
        return 'not ' . $this->wrap($column);
    }

    /**
     * Determine whether the database supports the UNION operator in a recursive expression.
     *
     * @return bool
     */
    public function supportsUnionInRecursiveExpression(): bool
    {
        return true;
    }
}