projection

GAE python NDB projection query working in development but not in production

由 馋奶兔 提交于 2019-12-09 04:13:30
I've been hitting my head against the wall because my Google App Engine python project has a very simple NDB projection query which works fine on my local machine, but mysteriously fails when deployed to production. Adding to the mystery... as a test I added an identical projection on another property, and it works in both dev and production! Could anyone help please?! Here are more details: I have the following entity that represents an expense: class Entry(ndb.Model): datetime = ndb.DateTimeProperty(indexed=True, required=True) amount = ndb.IntegerProperty(indexed=False, required=True) payee

“java.lang.IllegalArgumentException: Projection type must be an interface” Error

由 强颜欢笑 提交于 2019-12-08 16:15:17
问题 I am having difficulty in implementing projection in Spring Data JPA: 2017-10-19 11:31:33.968 ERROR 4272 --- [nio-8080-exec-6] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.dao.InvalidDataAccessApiUsageException: Projection type must be an interface!; nested exception is java.lang.IllegalArgumentException: Projection type must be an interface!

Hibernate Criteria Projection of non scalar values

由 泪湿孤枕 提交于 2019-12-08 13:35:10
问题 Is there any way to project multiple values for an root entity object using Criteria? Assume we have these classes (With the proper mappings): class Boss { private String name; private List<Employee> employees; // setters and getters and more stuff } class Employee { private String name; // setters and getters and more stuff } Then i am trying to do this : public void test() { Criteria criteria = this.getSession().createCriteria(Boss.class); criteria.createAlias("employees","employees");

MongoDB list projection of subfield

由 僤鯓⒐⒋嵵緔 提交于 2019-12-08 11:37:22
问题 With SQL analogy, I need to SELECT root.subfield1.subfield2 FROM collection , that produces a list of subfield2 ... Using a Example: import this datapackage.json by mongoimport -d lang_db -c lang_meta datapackage.json --jsonArray and work at terminal with mongo command: db.lang_meta.find({},{"resources.schema.fields.name":2}) the result is one array element ( .count() =1) with subfields containing the names, not a list of names. DUMPS obtained: { "_id": ObjectId("56011be94564569fc920eda4"),

DTO and Projections in WebAPI

由 与世无争的帅哥 提交于 2019-12-08 03:58:11
问题 WebAPI supports OData, so API consumer can specify fields that he requires, and it works fine. But is there a way to use DTO objects and projections in WebAPI? For example I have public class WebSite { public string Url {get;set;} public string Author {get;set;} public string Technology {get;set;} public DateTime CreatedAt {get;set;} // 20 more different properties } And i also have DTO object: public class WebSiteDTO { public string Url {get;set;} public string Author {get;set;} public bool

Perspective Projection and Z-buffering of a 3D head to form a face image

由 瘦欲@ 提交于 2019-12-08 02:54:10
问题 Input: 53490 3D points and for each point (xyz) and color (rgb) of a head Output: 2D face image as viewed from a particular position / direction Platform: Matlab C/C++ After study, I found the steps to be implemented Perspective Projection http://en.wikipedia.org/wiki/3D_projection Z-buffering http://en.wikipedia.org/wiki/Z-buffering Phong reflection model http://en.wikipedia.org/wiki/Phong_reflection_model I implemented the above 3 steps in Matlab. But it takes 8 min for the execution. The

Parse style attribute collection using linq

由 放肆的年华 提交于 2019-12-08 02:45:40
问题 I want to parse an SVG style attribute, which is just a delimited string, e.g. "fill:#e2b126;stroke:#010101;stroke-width:0.3177;stroke-miterlimit:10" into a Dictionary<string,string> so that I can perform some processing on it. Here's what I have, which does the job, but I'd like to make it neater using a linq projection, just can't seem to get the syntax. I tried using .Select().ToDictionary etc, but no joy. Thanks: string attributes = "fill:#e2b126;stroke:#010101;stroke-width:0.3177;stroke

Projecting a 3D point to 2D screen coordinate OpenTK

由 南笙酒味 提交于 2019-12-08 01:46:28
问题 Using Monotouch and OpenTK I am trying to get the screen coordinate of one 3D point. I have my world view projection matrix set up, and OpenGL makes sense of it and projects my 3D model perfectly, but how to use the same matrix to project just one point from 2D to 3D? I thought I could simply use: Vector3.Transform(ref input3Dpos, ref matWorldViewProjection, out projected2Dpos); Then have the projected screen coordinate in projected2DPos. But the resulting Vector4 does not seem to represent

Spring Data Projection with OneToMany returns too many results

由 独自空忆成欢 提交于 2019-12-07 06:47:55
问题 I have a JPA entity (Person) with onetomany relation (ContactInfo). @Entity public class Person { @Id @GeneratedValue private Integer id; private String name; private String lastname; private String sshKey; @OneToMany(mappedBy = "personId") private List<ContactInfo> contactInfoList; } @Entity public class ContactInfo { @Id @GeneratedValue private Integer id; private Integer personId; private String description; } I've defined a projection interface that includes this onetomany relation as

Why does OpenGL have a far clipping plane, and what idioms are used to deal with this?

由 一笑奈何 提交于 2019-12-06 22:22:08
问题 I've been learning OpenGL, and the one topic that continues to baffle me is the far clipping plane. While I can understand the reasoning behind the near clipping plane, and the side clipping planes (which never have any real effect because objects outside them would never be rendered anyway), the far clipping plane seems only to be an annoyance. Since those behind OpenGL have obviously thought this through, I know there must be something I am missing. Why does OpenGL have a far clipping plane
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