当我使用Java库（@extends('layouts.app')
@section('content')
@include('layouts.headers.cards')
<div class="container-fluid mt--7">
<div class="row">
<div class="col-xl-12 mb-5 mb-xl-0">
<div class="card bg-white shadow">
<div class="card-body">
<form id="addEventForm" method="post" action="{{ route('editEvent.store') }}" autocomplete="off">
@csrf
<div class="pl-lg-4">
<input type="number" name="eventId" id="input-eventId" value="{{ $old_event['id'] }}" style="visibility:hidden;">
<div class="form-group{{ $errors->has('title') ? ' has-danger' : '' }}">
<label class="form-control-label" for="input-title">{{ __('Title') }}</label>
<div class="row">
<div class="col">
<input type="text" name="title" id="input-title" class="form-control form-control-alternative{{ $errors->has('title') ? ' is-invalid' : '' }}" placeholder="{{ __('Title') }}" value="{{ $old_event['title'] }}" required autofocus>
</div>
<div class="col">
<p style="font-size:14px;padding: 10px;">Current Title: {{ $old_event['title'] }}</p>
</div>
</div>
@if ($errors->has('title'))
<span class="invalid-feedback" role="alert">
<strong>{{ $errors->first('title') }}</strong>
</span>
@endif
</div>
<div class="form-group{{ $errors->has('description') ? ' has-danger' : '' }}">
<label class="form-control-label" for="input-description">{{ __('Description') }}</label>
<div class="row">
<div class="col">
<input type="text" name="description" id="input-description" class="form-control form-control-alternative{{ $errors->has('description') ? ' is-invalid' : '' }}" placeholder="{{ __('Description') }}" value="{{ $old_event['description'] }}" required autofocus>
</div>
<div class="col">
<p style="font-size:14px;padding: 10px;">Current Description: {{ $old_event['description'] }}</p>
</div>
</div>
@if ($errors->has('description'))
<span class="invalid-feedback" role="alert">
<strong>{{ $errors->first('description') }}</strong>
</span>
@endif
</div>
<div class="form-group{{ $errors->has('startTime') ? ' has-danger' : '' }}">
<label class="form-control-label" for="input-startTime">{{ __('Start Time') }}</label>
<div class="row">
<div class="col">
<input type="time" name="startTime" id="input-startTime" class="form-control form-control-alternative{{ $errors->has('startTime') ? ' is-invalid' : '' }}" placeholder="{{ __('Start Time') }}" value="{{ old('startTime') }}" autofocus>
</div>
<div class="col">
<p style="font-size:14px;padding: 10px;">Current Start time: {{ $old_event['startTime'] }}</p>
</div>
</div>
@if ($errors->has('startTime'))
<span class="invalid-feedback" role="alert">
<strong>{{ $errors->first('startTime') }}</strong>
</span>
@endif
</div>
<div class="form-group{{ $errors->has('endTime') ? ' has-danger' : '' }}">
<label class="form-control-label" for="input-endTime">{{ __('End Time') }}</label>
<div class="row">
<div class="col">
<input type="time" name="endTime" id="input-endTime" class="form-control form-control-alternative{{ $errors->has('endTime') ? ' is-invalid' : '' }}" placeholder="{{ __('End Time') }}" value="{{ old('endTime') }}" autofocus>
</div>
<div class="col">
<p style="font-size:14px;padding: 10px;">Current End time: {{ $old_event['endTime'] }}</p>
</div>
</div>
@if ($errors->has('endTime'))
<span class="invalid-feedback" role="alert">
<strong>{{ $errors->first('endTime') }}</strong>
</span>
@endif
</div>
<fieldset style="border:groove;padding:5px;">
<legend style="font-size:12px;">      One day event (set this values only for one day event)</legend>
<div class="form-group{{ $errors->has('start') ? ' has-danger' : '' }}">
<label class="form-control-label" for="input-start">{{ __('Start') }}</label>
<div class="row">
<div class="col">
<input type="date" name="start" id="input-start" class="form-control form-control-alternative{{ $errors->has('start') ? ' is-invalid' : '' }}" placeholder="{{ __('Start') }}" autofocus>
</div>
<div class="col">
<p style="font-size:14px;padding: 10px;">Current Start date: {{ $old_event['start'] }}</p>
</div>
</div>
@if ($errors->has('start'))
<span class="invalid-feedback" role="alert">
<strong>{{ $errors->first('start') }}</strong>
</span>
@endif
</div>
<div class="form-group{{ $errors->has('end') ? ' has-danger' : '' }}">
<label class="form-control-label" for="input-end">{{ __('End') }}</label>
<div class="row">
<div class="col">
<input type="date" name="end" id="input-end" class="form-control form-control-alternative{{ $errors->has('end') ? ' is-invalid' : '' }}" placeholder="{{ __('End') }}" autofocus>
</div>
<div class="col">
<p style="font-size:14px;padding: 10px;">Current End date: {{ $old_event['end'] }}</p>
</div>
</div>
@if ($errors->has('end'))
<span class="invalid-feedback" role="alert">
<strong>{{ $errors->first('end') }}</strong>
</span>
@endif
</div>
</fieldset>
<fieldset style="border:groove;padding:5px;">
<legend style="font-size:12px;">      Recurring event (set this values if event is recurring)</legend>
<div class="form-group{{ $errors->has('startRecur') ? ' has-danger' : '' }}">
<label class="form-control-label" for="input-startRecur">{{ __('Start Recurring') }}</label>
<div class="row">
<div class="col">
<input type="date" name="startRecur" id="input-startRecur" class="form-control form-control-alternative{{ $errors->has('startRecur') ? ' is-invalid' : '' }}" placeholder="{{ __('Start Recurring') }}" value="{{ old('startRecur') }}" autofocus>
</div>
<div class="col">
<p style="font-size:14px;padding: 10px;">Current Start date: {{ $old_event['startRecur'] }}</p>
</div>
</div>
@if ($errors->has('startRecur'))
<span class="invalid-feedback" role="alert">
<strong>{{ $errors->first('startRecur') }}</strong>
</span>
@endif
</div>
<div class="form-group{{ $errors->has('endRecur') ? ' has-danger' : '' }}">
<label class="form-control-label" for="input-endRecur">{{ __('End Recurring') }}</label>
<div class="row">
<div class="col">
<input type="date" name="endRecur" id="input-endRecur" class="form-control form-control-alternative{{ $errors->has('endRecur') ? ' is-invalid' : '' }}" placeholder="{{ __('End Recurring') }}" value="{{ old('endRecur') }}" autofocus>
</div>
<div class="col">
<p style="font-size:14px;padding: 10px;">Current End date: {{ $old_event['endRecur'] }}</p>
</div>
</div>
@if ($errors->has('endRecur'))
<span class="invalid-feedback" role="alert">
<strong>{{ $errors->first('endRecur') }}</strong>
</span>
@endif
</div>
<div class="form-group{{ $errors->has('daysOfWeek') ? ' has-danger' : '' }}">
<label class="form-control-label" for="input-daysOfWeek">{{ __('Days of week') }}</label>
<div class="row">
<div class="col">
<select multiple size="7" name="daysOfWeek[]" id="input-daysOfWeek" class="form-control form-control-alternative{{ $errors->has('daysOfWeek') ? ' is-invalid' : '' }}" placeholder="{{ __('days Of Week') }}" autofocus>
<option value="0">Sunday</option>
<option value="1">Monday</option>
<option value="2">Tuesday</option>
<option value="3">Wednesday</option>
<option value="4">Thursday</option>
<option value="5">Friday</option>
<option value="6">Saturday</option>
</select>
</div>
<div class="col">
<p style="font-size:14px;padding: 10px;">Current selected days: {{ $old_event['daysOfWeek'] }}</p>
</div>
</div>
@if ($errors->has('daysOfWeek'))
<span class="invalid-feedback" role="alert">
<strong>{{ $errors->first('daysOfWeek') }}</strong>
</span>
@endif
</div>
</fieldset>
<div class="form-group{{ $errors->has('assignesto') ? ' has-danger' : '' }}">
<label class="form-control-label" for="input-assignesto">{{ __('assignes to') }}</label>
<div class="row">
<div class="col">
<select multiple size="3" name="assignesto[]" id="input-assignesto" class="form-control form-control-alternative{{ $errors->has('assignesto') ? ' is-invalid' : '' }}" placeholder="{{ __('assignesto') }}" required autofocus>
@foreach($assignees_array as $key)
<option value="{{ $key->id }}">{{ $key->name }}</option>
@endforeach
</select>
</div>
<div class="col">
<p style="font-size:14px;padding: 10px;">Current assignees: {{ $old_event['assigned_to_string'] }}</p>
</div>
</div>
@if ($errors->has('assignesto'))
<span class="invalid-feedback" role="alert">
<strong>{{ $errors->first('assignesto') }}</strong>
</span>
@endif
</div>
<div class="form-group{{ $errors->has('location') ? ' has-danger' : '' }}">
<label class="form-control-label" for="input-location">{{ __('location') }}</label>
<div class="row">
<div class="col">
<input type="text" name="location" id="input-location" class="form-control form-control-alternative{{ $errors->has('location') ? ' is-invalid' : '' }}" placeholder="{{ __('location') }}" value="{{ $old_event['location'] }}" required autofocus>
</div>
<div class="col">
<p style="font-size:14px;padding: 10px;">Current Location: {{ $old_event['location'] }}</p>
</div>
</div>
@if ($errors->has('location'))
<span class="invalid-feedback" role="alert">
<strong>{{ $errors->first('location') }}</strong>
</span>
@endif
</div>
<div class="form-group{{ $errors->has('notes') ? ' has-danger' : '' }}">
<label class="form-control-label" for="input-notes">{{ __('notes') }}</label>
<div class="row">
<div class="col">
<input type="text" name="notes" id="input-notes" class="form-control form-control-alternative{{ $errors->has('notes') ? ' is-invalid' : '' }}" placeholder="{{ __('notes') }}" value="{{ $old_event['notes'] }}" required autofocus>
</div>
<div class="col">
<p style="font-size:14px;padding: 10px;">Current Notes: {{ $old_event['notes'] }}</p>
</div>
</div>
@if ($errors->has('notes'))
<span class="invalid-feedback" role="alert">
<strong>{{ $errors->first('notes') }}</strong>
</span>
@endif
</div>
<div class="form-group{{ $errors->has('notes') ? ' has-danger' : '' }}">
<p style="font-size:14px;padding: 10px;">Event created by: {{ $old_event['assigned_by_detail'] }}</p>
</div>
<div class="modal-footer">
<button type="submit" class="btn btn-primary mt-4">{{ __('Save') }}</button>
</div>
</div>
</form>
</div>
</div>
</div>
</div>
</div>
<script>
</script>
@include('layouts.footers.auth')
</div>
@endsection
@push('js')
<script src="{{ asset('argon') }}/vendor/chart.js/dist/Chart.min.js"></script>
<script src="{{ asset('argon') }}/vendor/chart.js/dist/Chart.extension.js"></script>
@endpush从Google数据存储中读取实体时，是整个实体，并且在调用com.google.cloud.datastore.Datastore方法时从数据库中提取了它的所有属性，分别是实体的属性在引用时是单独加载的，还是在我第一次访问实体属性时拉动了整个实体？
get(key)此外，如果在我获得实体的同时正在更新实体，则保证我收到的实体是一致的。 （即是否可以接收部分写入的实体，其中某些属性是来自写入的更新值，而某些是尚未反映更新的旧值？）
答案 0 :(得分：1)
让我们检查从com.google.cloud.datastore.DatastoreReader接口继承的官方库文档Datastore.get(key) method，并返回给定密钥的Entity。实体是一个持久数据对象，您在这里拥有从类com.google.cloud.datastore.BaseEntity继承的方法getString(String name)，该方法以字符串形式返回属性值，例如过滤所需的属性。 根据前述和OOP概念，“实体实体= datastore.get（key）;”返回具有所有属性的整个实体，并将其保存在“实体”变量中。
关于数据一致性，数据存储区查询可以在两个一致性级别中提供强大的结果，最终，您需要在一致性和速度之间取得平衡，具体取决于应用程序的需求。敬请阅读1，2文档，以进一步了解其在数据存储区中的工作方式。