<?php
# Generated by the protocol buffer compiler.  DO NOT EDIT!
# source: google/firestore/v1/query.proto

namespace Google\Cloud\Firestore\V1\StructuredQuery\CompositeFilter;

use UnexpectedValueException;

/**
 * A composite filter operator.
 *
 * Protobuf type <code>google.firestore.v1.StructuredQuery.CompositeFilter.Operator</code>
 */
class Operator
{
    /**
     * Unspecified. This value must not be used.
     *
     * Generated from protobuf enum <code>OPERATOR_UNSPECIFIED = 0;</code>
     */
    const OPERATOR_UNSPECIFIED = 0;
    /**
     * Documents are required to satisfy all of the combined filters.
     *
     * Generated from protobuf enum <code>AND = 1;</code>
     */
    const PBAND = 1;
    /**
     * Documents are required to satisfy at least one of the combined filters.
     *
     * Generated from protobuf enum <code>OR = 2;</code>
     */
    const PBOR = 2;

    private static $valueToName = [
        self::OPERATOR_UNSPECIFIED => 'OPERATOR_UNSPECIFIED',
        self::PBAND => 'AND',
        self::PBOR => 'OR',
    ];

    public static function name($value)
    {
        if (!isset(self::$valueToName[$value])) {
            throw new UnexpectedValueException(sprintf(
                    'Enum %s has no name defined for value %s', __CLASS__, $value));
        }
        return self::$valueToName[$value];
    }


    public static function value($name)
    {
        $const = __CLASS__ . '::' . strtoupper($name);
        if (!defined($const)) {
            $pbconst =  __CLASS__. '::PB' . strtoupper($name);
            if (!defined($pbconst)) {
                throw new UnexpectedValueException(sprintf(
                        'Enum %s has no value defined for name %s', __CLASS__, $name));
            }
            return constant($pbconst);
        }
        return constant($const);
    }
}

