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

namespace Google\Cloud\Spanner\V1;

use Google\Protobuf\Internal\GPBType;
use Google\Protobuf\Internal\RepeatedField;
use Google\Protobuf\Internal\GPBUtil;

/**
 * A modification to one or more Cloud Spanner rows.  Mutations can be
 * applied to a Cloud Spanner database by sending them in a
 * [Commit][google.spanner.v1.Spanner.Commit] call.
 *
 * Generated from protobuf message <code>google.spanner.v1.Mutation</code>
 */
class Mutation extends \Google\Protobuf\Internal\Message
{
    protected $operation;

    /**
     * Constructor.
     *
     * @param array $data {
     *     Optional. Data for populating the Message object.
     *
     *     @type \Google\Cloud\Spanner\V1\Mutation\Write $insert
     *           Insert new rows in a table. If any of the rows already exist,
     *           the write or transaction fails with error `ALREADY_EXISTS`.
     *     @type \Google\Cloud\Spanner\V1\Mutation\Write $update
     *           Update existing rows in a table. If any of the rows does not
     *           already exist, the transaction fails with error `NOT_FOUND`.
     *     @type \Google\Cloud\Spanner\V1\Mutation\Write $insert_or_update
     *           Like [insert][google.spanner.v1.Mutation.insert], except that if the row already exists, then
     *           its column values are overwritten with the ones provided. Any
     *           column values not explicitly written are preserved.
     *           When using [insert_or_update][google.spanner.v1.Mutation.insert_or_update], just as when using [insert][google.spanner.v1.Mutation.insert], all `NOT
     *           NULL` columns in the table must be given a value. This holds true
     *           even when the row already exists and will therefore actually be updated.
     *     @type \Google\Cloud\Spanner\V1\Mutation\Write $replace
     *           Like [insert][google.spanner.v1.Mutation.insert], except that if the row already exists, it is
     *           deleted, and the column values provided are inserted
     *           instead. Unlike [insert_or_update][google.spanner.v1.Mutation.insert_or_update], this means any values not
     *           explicitly written become `NULL`.
     *           In an interleaved table, if you create the child table with the
     *           `ON DELETE CASCADE` annotation, then replacing a parent row
     *           also deletes the child rows. Otherwise, you must delete the
     *           child rows before you replace the parent row.
     *     @type \Google\Cloud\Spanner\V1\Mutation\Delete $delete
     *           Delete rows from a table. Succeeds whether or not the named
     *           rows were present.
     * }
     */
    public function __construct($data = NULL) {
        \GPBMetadata\Google\Spanner\V1\Mutation::initOnce();
        parent::__construct($data);
    }

    /**
     * Insert new rows in a table. If any of the rows already exist,
     * the write or transaction fails with error `ALREADY_EXISTS`.
     *
     * Generated from protobuf field <code>.google.spanner.v1.Mutation.Write insert = 1;</code>
     * @return \Google\Cloud\Spanner\V1\Mutation\Write|null
     */
    public function getInsert()
    {
        return $this->readOneof(1);
    }

    public function hasInsert()
    {
        return $this->hasOneof(1);
    }

    /**
     * Insert new rows in a table. If any of the rows already exist,
     * the write or transaction fails with error `ALREADY_EXISTS`.
     *
     * Generated from protobuf field <code>.google.spanner.v1.Mutation.Write insert = 1;</code>
     * @param \Google\Cloud\Spanner\V1\Mutation\Write $var
     * @return $this
     */
    public function setInsert($var)
    {
        GPBUtil::checkMessage($var, \Google\Cloud\Spanner\V1\Mutation\Write::class);
        $this->writeOneof(1, $var);

        return $this;
    }

    /**
     * Update existing rows in a table. If any of the rows does not
     * already exist, the transaction fails with error `NOT_FOUND`.
     *
     * Generated from protobuf field <code>.google.spanner.v1.Mutation.Write update = 2;</code>
     * @return \Google\Cloud\Spanner\V1\Mutation\Write|null
     */
    public function getUpdate()
    {
        return $this->readOneof(2);
    }

    public function hasUpdate()
    {
        return $this->hasOneof(2);
    }

    /**
     * Update existing rows in a table. If any of the rows does not
     * already exist, the transaction fails with error `NOT_FOUND`.
     *
     * Generated from protobuf field <code>.google.spanner.v1.Mutation.Write update = 2;</code>
     * @param \Google\Cloud\Spanner\V1\Mutation\Write $var
     * @return $this
     */
    public function setUpdate($var)
    {
        GPBUtil::checkMessage($var, \Google\Cloud\Spanner\V1\Mutation\Write::class);
        $this->writeOneof(2, $var);

        return $this;
    }

    /**
     * Like [insert][google.spanner.v1.Mutation.insert], except that if the row already exists, then
     * its column values are overwritten with the ones provided. Any
     * column values not explicitly written are preserved.
     * When using [insert_or_update][google.spanner.v1.Mutation.insert_or_update], just as when using [insert][google.spanner.v1.Mutation.insert], all `NOT
     * NULL` columns in the table must be given a value. This holds true
     * even when the row already exists and will therefore actually be updated.
     *
     * Generated from protobuf field <code>.google.spanner.v1.Mutation.Write insert_or_update = 3;</code>
     * @return \Google\Cloud\Spanner\V1\Mutation\Write|null
     */
    public function getInsertOrUpdate()
    {
        return $this->readOneof(3);
    }

    public function hasInsertOrUpdate()
    {
        return $this->hasOneof(3);
    }

    /**
     * Like [insert][google.spanner.v1.Mutation.insert], except that if the row already exists, then
     * its column values are overwritten with the ones provided. Any
     * column values not explicitly written are preserved.
     * When using [insert_or_update][google.spanner.v1.Mutation.insert_or_update], just as when using [insert][google.spanner.v1.Mutation.insert], all `NOT
     * NULL` columns in the table must be given a value. This holds true
     * even when the row already exists and will therefore actually be updated.
     *
     * Generated from protobuf field <code>.google.spanner.v1.Mutation.Write insert_or_update = 3;</code>
     * @param \Google\Cloud\Spanner\V1\Mutation\Write $var
     * @return $this
     */
    public function setInsertOrUpdate($var)
    {
        GPBUtil::checkMessage($var, \Google\Cloud\Spanner\V1\Mutation\Write::class);
        $this->writeOneof(3, $var);

        return $this;
    }

    /**
     * Like [insert][google.spanner.v1.Mutation.insert], except that if the row already exists, it is
     * deleted, and the column values provided are inserted
     * instead. Unlike [insert_or_update][google.spanner.v1.Mutation.insert_or_update], this means any values not
     * explicitly written become `NULL`.
     * In an interleaved table, if you create the child table with the
     * `ON DELETE CASCADE` annotation, then replacing a parent row
     * also deletes the child rows. Otherwise, you must delete the
     * child rows before you replace the parent row.
     *
     * Generated from protobuf field <code>.google.spanner.v1.Mutation.Write replace = 4;</code>
     * @return \Google\Cloud\Spanner\V1\Mutation\Write|null
     */
    public function getReplace()
    {
        return $this->readOneof(4);
    }

    public function hasReplace()
    {
        return $this->hasOneof(4);
    }

    /**
     * Like [insert][google.spanner.v1.Mutation.insert], except that if the row already exists, it is
     * deleted, and the column values provided are inserted
     * instead. Unlike [insert_or_update][google.spanner.v1.Mutation.insert_or_update], this means any values not
     * explicitly written become `NULL`.
     * In an interleaved table, if you create the child table with the
     * `ON DELETE CASCADE` annotation, then replacing a parent row
     * also deletes the child rows. Otherwise, you must delete the
     * child rows before you replace the parent row.
     *
     * Generated from protobuf field <code>.google.spanner.v1.Mutation.Write replace = 4;</code>
     * @param \Google\Cloud\Spanner\V1\Mutation\Write $var
     * @return $this
     */
    public function setReplace($var)
    {
        GPBUtil::checkMessage($var, \Google\Cloud\Spanner\V1\Mutation\Write::class);
        $this->writeOneof(4, $var);

        return $this;
    }

    /**
     * Delete rows from a table. Succeeds whether or not the named
     * rows were present.
     *
     * Generated from protobuf field <code>.google.spanner.v1.Mutation.Delete delete = 5;</code>
     * @return \Google\Cloud\Spanner\V1\Mutation\Delete|null
     */
    public function getDelete()
    {
        return $this->readOneof(5);
    }

    public function hasDelete()
    {
        return $this->hasOneof(5);
    }

    /**
     * Delete rows from a table. Succeeds whether or not the named
     * rows were present.
     *
     * Generated from protobuf field <code>.google.spanner.v1.Mutation.Delete delete = 5;</code>
     * @param \Google\Cloud\Spanner\V1\Mutation\Delete $var
     * @return $this
     */
    public function setDelete($var)
    {
        GPBUtil::checkMessage($var, \Google\Cloud\Spanner\V1\Mutation\Delete::class);
        $this->writeOneof(5, $var);

        return $this;
    }

    /**
     * @return string
     */
    public function getOperation()
    {
        return $this->whichOneof("operation");
    }

}