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Directory : /var/www/iNewsl/vendor/laravel/framework/src/Illuminate/Database/Query/Grammars/

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Current File : /var/www/iNewsl/vendor/laravel/framework/src/Illuminate/Database/Query/Grammars/PostgresGrammar.php

<?php

namespace Illuminate\Database\Query\Grammars;

use Illuminate\Support\Str;
use Illuminate\Database\Query\Builder;

class PostgresGrammar extends Grammar
{
    /**
     * All of the available clause operators.
     *
     * @var array
     */
    protected $operators = [
        '=', '<', '>', '<=', '>=', '<>', '!=',
        'like', 'not like', 'between', 'ilike',
        '&', '|', '#', '<<', '>>',
        '@>', '<@', '?', '?|', '?&', '||', '-', '-', '#-',
    ];

    /**
     * Compile the lock into SQL.
     *
     * @param  \Illuminate\Database\Query\Builder  $query
     * @param  bool|string  $value
     * @return string
     */
    protected function compileLock(Builder $query, $value)
    {
        if (is_string($value)) {
            return $value;
        }

        return $value ? 'for update' : 'for share';
    }

    /**
     * Compile a "where date" clause.
     *
     * @param  \Illuminate\Database\Query\Builder  $query
     * @param  array  $where
     * @return string
     */
    protected function whereDate(Builder $query, $where)
    {
        $value = $this->parameter($where['value']);

        return $this->wrap($where['column']).'::date '.$where['operator'].' '.$value;
    }

    /**
     * Compile a date based where clause.
     *
     * @param  string  $type
     * @param  \Illuminate\Database\Query\Builder  $query
     * @param  array  $where
     * @return string
     */
    protected function dateBasedWhere($type, Builder $query, $where)
    {
        $value = $this->parameter($where['value']);

        return 'extract('.$type.' from '.$this->wrap($where['column']).') '.$where['operator'].' '.$value;
    }

    /**
     * Compile an update statement into SQL.
     *
     * @param  \Illuminate\Database\Query\Builder  $query
     * @param  array  $values
     * @return string
     */
    public function compileUpdate(Builder $query, $values)
    {
        $table = $this->wrapTable($query->from);

        // Each one of the columns in the update statements needs to be wrapped in the
        // keyword identifiers, also a place-holder needs to be created for each of
        // the values in the list of bindings so we can make the sets statements.
        $columns = $this->compileUpdateColumns($values);

        $from = $this->compileUpdateFrom($query);

        $where = $this->compileUpdateWheres($query);

        return trim("update {$table} set {$columns}{$from} $where");
    }

    /**
     * Compile the columns for the update statement.
     *
     * @param  array   $values
     * @return string
     */
    protected function compileUpdateColumns($values)
    {
        $columns = [];

        // When gathering the columns for an update statement, we'll wrap each of the
        // columns and convert it to a parameter value. Then we will concatenate a
        // list of the columns that can be added into this update query clauses.
        foreach ($values as $key => $value) {
            $columns[] = $this->wrap($key).' = '.$this->parameter($value);
        }

        return implode(', ', $columns);
    }

    /**
     * Compile the "from" clause for an update with a join.
     *
     * @param  \Illuminate\Database\Query\Builder  $query
     * @return string|null
     */
    protected function compileUpdateFrom(Builder $query)
    {
        if (! isset($query->joins)) {
            return '';
        }

        $froms = [];

        // When using Postgres, updates with joins list the joined tables in the from
        // clause, which is different than other systems like MySQL. Here, we will
        // compile out the tables that are joined and add them to a from clause.
        foreach ($query->joins as $join) {
            $froms[] = $this->wrapTable($join->table);
        }

        if (count($froms) > 0) {
            return ' from '.implode(', ', $froms);
        }
    }

    /**
     * Compile the additional where clauses for updates with joins.
     *
     * @param  \Illuminate\Database\Query\Builder  $query
     * @return string
     */
    protected function compileUpdateWheres(Builder $query)
    {
        $baseWhere = $this->compileWheres($query);

        if (! isset($query->joins)) {
            return $baseWhere;
        }

        // Once we compile the join constraints, we will either use them as the where
        // clause or append them to the existing base where clauses. If we need to
        // strip the leading boolean we will do so when using as the only where.
        $joinWhere = $this->compileUpdateJoinWheres($query);

        if (trim($baseWhere) == '') {
            return 'where '.$this->removeLeadingBoolean($joinWhere);
        }

        return $baseWhere.' '.$joinWhere;
    }

    /**
     * Compile the "join" clauses for an update.
     *
     * @param  \Illuminate\Database\Query\Builder  $query
     * @return string
     */
    protected function compileUpdateJoinWheres(Builder $query)
    {
        $joinWheres = [];

        // Here we will just loop through all of the join constraints and compile them
        // all out then implode them. This should give us "where" like syntax after
        // everything has been built and then we will join it to the real wheres.
        foreach ($query->joins as $join) {
            foreach ($join->wheres as $where) {
                $method = "where{$where['type']}";

                $joinWheres[] = $where['boolean'].' '.$this->$method($query, $where);
            }
        }

        return implode(' ', $joinWheres);
    }

    /**
     * Compile an insert and get ID statement into SQL.
     *
     * @param  \Illuminate\Database\Query\Builder  $query
     * @param  array   $values
     * @param  string  $sequence
     * @return string
     */
    public function compileInsertGetId(Builder $query, $values, $sequence)
    {
        if (is_null($sequence)) {
            $sequence = 'id';
        }

        return $this->compileInsert($query, $values).' returning '.$this->wrap($sequence);
    }

    /**
     * Compile a truncate table statement into SQL.
     *
     * @param  \Illuminate\Database\Query\Builder  $query
     * @return array
     */
    public function compileTruncate(Builder $query)
    {
        return ['truncate '.$this->wrapTable($query->from).' restart identity' => []];
    }

    /**
     * Wrap a single string in keyword identifiers.
     *
     * @param  string  $value
     * @return string
     */
    protected function wrapValue($value)
    {
        if ($value === '*') {
            return $value;
        }

        if (Str::contains($value, '->')) {
            return $this->wrapJsonSelector($value);
        }

        return '"'.str_replace('"', '""', $value).'"';
    }

    /**
     * Wrap the given JSON selector.
     *
     * @param  string  $value
     * @return string
     */
    protected function wrapJsonSelector($value)
    {
        $path = explode('->', $value);

        $field = $this->wrapValue(array_shift($path));

        $wrappedPath = $this->wrapJsonPathAttributes($path);

        $attribute = array_pop($wrappedPath);

        if (! empty($wrappedPath)) {
            return $field.'->'.implode('->', $wrappedPath).'->>'.$attribute;
        }

        return $field.'->>'.$attribute;
    }

    /**
     * Wrap the attributes of the give JSON path.
     *
     * @param  array  $path
     * @return array
     */
    protected function wrapJsonPathAttributes($path)
    {
        return array_map(function ($attribute) {
            return "'$attribute'";
        }, $path);
    }
}

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