gin

GWT GIN Field Level Injection

由 自闭症网瘾萝莉.ら 提交于 2019-12-11 02:49:51
问题 We are evaluating using GIN in out GWT project and have had good results with typical injection via constructor arguments. The thing we have had difficulty with is field level injection. The fields always end up being null. Does anyone have a good example of how to properly achieve filed level injection with GIN? Update: Here is some example code similar to ours: public class MVP implements EntryPoint { public static final HandlerManager EVENT_BUS = new HandlerManager(null); private final

Gin Injection Inside Class Generated By Deferred Binding

由 那年仲夏 提交于 2019-12-10 23:44:43
问题 Here is the problem, I have code being generated by Deferred Binding in GWT, and I would like to use Gin Injection inside of this code. Initially, I attempted to put a private constructor with an @Inject annotation in the generated class, but GWT complained that it did not have a public noargs constructor. In any case, I also got errors regarding my attempts to inject something abstract without bindings, and feel like I couldn't possibly bind it since I don't have the type literal available

Use of full-text search + GIN in a view (Django 1.11 )

由 Deadly 提交于 2019-12-10 18:53:33
问题 I need some help with building proper query in a django view for full-text search using GIN index. I have quite a big database (~400k lines) and need to do a full-text search on 3 fields from it. Tried to use django docs search and this is code BEFORE GIN. It works, but takes 6+ seconds to search over all fields. Next I tried to implement a GIN index to speed up my search. There are a lot of questions already how to build it. But my question is - how does the view query change when using a

PostgreSQL - query against GIN index of HSTORE value

由 ε祈祈猫儿з 提交于 2019-12-10 10:14:19
问题 I have the following constructor (as a test): CREATE TABLE product (id BIGSERIAL PRIMARY KEY, ext hstore); CREATE INDEX ix_product_ext ON product USING GIN(ext); INSERT INTO product (id, ext) SELECT id, ('size=>' || CEILING(10 + RANDOM() * 90) || ',mass=>' || CEILING(10 + RANDOM() * 90))::hstore FROM generate_series(1, 100000) id; I have the following query, which works ok: SELECT COUNT(id) FROM ( SELECT id FROM product WHERE (ext->'size')::INT >= 41 AND (ext->'mass')::INT <= 20 ) T But I

PostgreSQL全文检索简介

由 妖精的绣舞 提交于 2019-12-09 09:50:43
PostgreSQL自带有一个简易的全文检索引擎，可以实现小规模数据量的全文检索功能。本文我们将引导介绍一下这个功能，对于小数据量的搜索这个功能是足够使用的，而无需搭建额外的ES等重量级的全文检索服务器。 详细的全文检索功能请参见 官方文档 。感谢PostgreSQL中文社区的 翻译文档 PostgreSQL的全文检索入门 PG的全文检索操作符是 @@ ，当一个 tsvector (文档)和 tsquery (条件)匹配时返回 true ，并且前后顺序无影响: SELECT 'a fat cat sat on a mat and ate a fat rat'::tsvector @@ 'cat & rat'::tsquery; ?column? ---------- t SELECT 'fat & cow'::tsquery @@ 'a fat cat sat on a mat and ate a fat rat'::tsvector; ?column? ---------- f PostgreSQL 10开始， jsonb 也支持全文检索了。 和普通的SQL查询一样，只要在 WHERE 条件中使用这个符号就代表使用全文检索条件筛选文档了。如: SELECT title FROM pgweb WHERE to_tsvector('english', body) @@ to

How to override binding in GIN

由 拟墨画扇 提交于 2019-12-07 03:11:37
问题 I find the answer for Guice Overriding Binding in Guice but don't know how to do the same for GIN in GWT. Thanks in advance! 回答1: As far as I know, it's not supported. To answer your comment: If you're running "pure" JUnit tests (not GWTTestcases) you don't use GIN, you use Guice, and in Guice you can override modules. If you want to reuse GIN modules, then wrap them using GinModuleAdapter . So you can do something like this: static class MyGinModule extends GinModule { ... } static class

How to inject a “runtime” dependency like a logged in user which is not available at application boot time?

由 只谈情不闲聊 提交于 2019-12-06 08:53:13
I'm just not getting this: I use Gin in my java GWT app to do DI. The login screen is integrated into the full application window. After the user has logged in I want to inject the user object into other classes like GUI Presenters which I create, so I have some sort of runtime dependency I believe. How do i do that? One solution I can think of is sth like: class Presenter { @Inject Presenter(LoggedInUserFactory userFactory) { User user = userFactory.getLoggedInUser(); } } class LoggedInUserFactoryImpl { public static User user; User getLoggedInUser() { return user; } } So, when the user is

Using GWT source code in Android

由 回眸只為那壹抹淺笑 提交于 2019-12-06 05:51:27
问题 I have a web app based on GWT. I use the same code base to target desktop as well as mobile platforms. I am using Model-View-Presenter and Dependency Injection based on GIN to achieve the goal of being cross platform compatible. However for better performance and native look-and-feel on Android, I would like to write to a fully native app. I want start by migrating the same GWT Java code to a new Android project and replace just the View implementations with native views that make use of

PostgreSQL - query against GIN index of HSTORE value

由 僤鯓⒐⒋嵵緔 提交于 2019-12-05 20:16:39
I have the following constructor (as a test): CREATE TABLE product (id BIGSERIAL PRIMARY KEY, ext hstore); CREATE INDEX ix_product_ext ON product USING GIN(ext); INSERT INTO product (id, ext) SELECT id, ('size=>' || CEILING(10 + RANDOM() * 90) || ',mass=>' || CEILING(10 + RANDOM() * 90))::hstore FROM generate_series(1, 100000) id; I have the following query, which works ok: SELECT COUNT(id) FROM ( SELECT id FROM product WHERE (ext->'size')::INT >= 41 AND (ext->'mass')::INT <= 20 ) T But I believe the correct way to do this is using the @> operator. I have the following, but it gives a syntax

How to override binding in GIN

由 廉价感情. 提交于 2019-12-05 07:44:00
I find the answer for Guice Overriding Binding in Guice but don't know how to do the same for GIN in GWT. Thanks in advance! As far as I know, it's not supported. To answer your comment: If you're running "pure" JUnit tests (not GWTTestcases) you don't use GIN, you use Guice, and in Guice you can override modules. If you want to reuse GIN modules, then wrap them using GinModuleAdapter . So you can do something like this: static class MyGinModule extends GinModule { ... } static class MyGuiceModule extends AbstractModule { ... } // And somewhere in your code, here's how you could create the
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