schema

trying to figure out the best database schema

由 有些话、适合烂在心里 提交于 2019-12-23 01:14:09
问题 I want to come up with a generic schema (if possible) to use for a number of different events that I am managing. These events can be weddings, birthday parties, etc. So far I have 3 main tables: Contact Table - the usual info like address, phone, etc. Events Table - a list of events with some info like date, location, etc. EventInfo Table - contains the following fields (not complete but you should get the point): EventID ContactID NumberofAdultsInvited NumberofChildrenInvited Responded (yes

Mongoose positional operator errors

由 心不动则不痛 提交于 2019-12-22 23:22:06
问题 I am trying to run a command like this in mongoose: Song.update({url: s.url, "playlist.playlist_id": pl._id}, {$set: {"playlist.$.position": 505050}}, function(er, da) { console.log("song on playlist lets change position"); console.log(er); console.log(da); }); however I get the error: [TypeError: Cannot call method 'path' of undefined] I am guessing it has to do with mongoose and $ operator because it works in the mongodb console. Any ideas? 回答1: I had similar issue with mongoose also, maybe

Mongoose positional operator errors

由 江枫思渺然 提交于 2019-12-22 23:21:54
问题 I am trying to run a command like this in mongoose: Song.update({url: s.url, "playlist.playlist_id": pl._id}, {$set: {"playlist.$.position": 505050}}, function(er, da) { console.log("song on playlist lets change position"); console.log(er); console.log(da); }); however I get the error: [TypeError: Cannot call method 'path' of undefined] I am guessing it has to do with mongoose and $ operator because it works in the mongodb console. Any ideas? 回答1: I had similar issue with mongoose also, maybe

SSM整合笔记

由 别等时光非礼了梦想. 提交于 2019-12-22 21:34:38
SSM整合笔记 1，创建maven项目 　 　 创建maven项目过程省略 　　ps：如果创建完maven项目之后项目报错，可能是没有配置Tomcat 2，在pom.xml里面导入相应的jar的依赖 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.junge</groupId> <artifactId>SSM1</artifactId> <packaging>war</packaging> <version>0.0.1-SNAPSHOT</version> <name>SSM1 Maven Webapp</name> <url>http://maven.apache.org</url> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit<

Schema warning about QAPage on Question type

由 烂漫一生 提交于 2019-12-22 18:47:17
问题 I have a page with multiple Question and Answers and I'm getting the following warning on each question: Missing a QAPage markup item on page to which this item should be associated. This is example markup: <div itemscope="" itemtype="http://schema.org/Question"> <h3 class="question" itemprop="name text">This is the question?</h3> <div class="answer" id="IdForTheAnswer" itemprop="acceptedAnswer" itemscope="" itemtype="http://schema.org/Answer"> <div itemprop="text"> <p>This is the answer text

MongoDB schema for storing user location history

由 痞子三分冷 提交于 2019-12-22 18:24:53
问题 I'd like to use MongoDB to store my users location history (with their consent, of course). I see the following three options: Create one locations collection for all users. Each document would have a userId field, as well as a time field, both of which would be indexed. The number of rows in this collection could potentially grow beyond 100 million. Create one collection with users which have their locations as embedded array. That makes searching for locations a little more difficult, since

How to annotation order field when using XStream on Android?

由 元气小坏坏 提交于 2019-12-22 18:24:25
问题 I need to generate XML from java objects on Android. XML nodes must be in definite sequence. Here is what I got(These fields as according to alphabetical order): <soap:Envelope xmlns:cwmp="urn:dslforum-org:cwmp-1-0" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <soap:Body> <cwmp:Inform> <CurrentTime>2013-06-07 07:11:20.561 UTC<

How to annotation order field when using XStream on Android?

由 生来就可爱ヽ(ⅴ＜●) 提交于 2019-12-22 18:23:25
问题 I need to generate XML from java objects on Android. XML nodes must be in definite sequence. Here is what I got(These fields as according to alphabetical order): <soap:Envelope xmlns:cwmp="urn:dslforum-org:cwmp-1-0" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <soap:Body> <cwmp:Inform> <CurrentTime>2013-06-07 07:11:20.561 UTC<

xsi:schemaLocation有何作用

由 空扰寡人 提交于 2019-12-22 18:06:13
总结：xsi:schemaLocation 即像java中的import命令 其中值为一对一对的 即 xxxx xxxxxx.dtd 即相当于引入类 前者为名称 后者为来源 　　　xmlns:xsi 该文件语法说明 使用了XMLSchema-instance 　　　xmlns:即为别名 　　像下图使用了xmlns:xsi 才能识别xsi:schemaLocation和xmlns 　　在xsi:schemaLocation引入了beans,xmlns创建beans后 才允许在下方使用<bean></bean>标签 否则会报unknowTag 　　 我来说说XML文件中的xmlns、xmlns:xsi和xsi:schemaLocation、dtd文件的具体含义 相信很多人和我一样，在编写Spring或者Maven或者其他需要用到XML文档的程序时，通常都是将这些XML文档头拷贝过来，并没有理解其中元素（比如xmlns，xmlns:xsi，xsi:schemaLocation）的真正含义，不知道哪些元素是多余的，也不知道为什么要加那些元素。这样当有时候网上Copy的XML头有错的时候自己却不知道怎么下手。我也是这样的，于是今天花了点时间好好的理解了一下这些元素及其用法，现整理与此，在此谢谢各位前辈的经验，如有总结的不对或者不好的地方，欢迎留言提出各位的宝贵意见。 话不多说

HTML5 valid itemscope

由 回眸只為那壹抹淺笑 提交于 2019-12-22 13:56:36
问题 I am marking up my content with schema.org microformats and am wondering about the itemscope attribute. The example given on http://schema.org/docs/gs.html is <div itemscope itemtype="http://schema.org/Movie"> Is this valid HTML5? I thought attributes needed values, something like <div itemscope="itemscope" itemtype="http://schema.org/Movie"> 回答1: It's a boolean attribute, which is valid HTML5. If the attribute is present, its value must either be the empty string or a value that is an ASCII
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