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Category: Opensource

Open-source software (open-source) is a new term that is defined as software whose source code can be used by the public, and the use, modification, and distribution of this software are not restricted by licenses. Open source software is usually copyrighted, and its license may contain such restrictions: deliberate protection of its open source status, notice of authorship, or development control. “Open source” is being registered as a certification mark by public interest software organizations, which is also a means of creating a formal definition of open source.

Hibernate – HQL on subclass properties

I have a class A and a class B and a class C. They have different attributes.
How do I do:
aaaa where(a.class = B and a .specific-property-of-b = “y”) or (a.class = C and a.specific-property-of-c

October 12, 2021By Simo Hibernate Hibernate, HQL, Properties, subclassesLeave a Comment

LINQ to NHIBERNATE – Did not implement method COS

In Linq to NHibernate, I am trying to return business users within a certain distance. This is what I have so far:

var query = from b in ActiveRecordLinq.AsQueryable()
where (3959 * Math.Aco

October 12, 2021By Simo Hibernate COS, Implementation, linq, method, NHIBERNATE, noLeave a Comment

How to add ID before using NHibernate

It seems that NH only gets MAX(ID) once, and then stores the value internally when inserting it for the first time, which will cause some problems when other processes insert data. Then I didn’t Ac

October 12, 2021By Simo Hibernate Any, Before, Do, how to make, ID, increase, INSERT, NHIBERNATELeave a Comment

Hibernate – JPQL correctly

After searching, I found that there is no correct join in JPQL. I saw that there is another way to implement it in both directions using JPA (not connected correctly but using pojo objects) but I a

October 12, 2021By Simo Hibernate correct, Hibernate, JOIN, JPQLLeave a Comment

Simulated Telnet Protocol C Language Client Program

First of all, we must understand the telnet protocol. The following two blogs gave me preliminary ideas.
https://www.cnblogs.com/liang-ling/p/5833489.html This one is relatively basic Introduction

October 12, 2021By Simo Hadoop Agreement, C language, client, program, simulation, telnetLeave a Comment

Jetty SpringMVC Home Path Access

I use Jetty as a web server. The project uses the springmvc framework.

启动jetty 访问项目http://127.0.0.1:4444/mobile/
出现404异常

但用tomcat作为web服务器启动项目访问:http://127.0.0.1: 4444/mobile/
can

October 12, 2021By Simo Jetty Access, HOME, jetty, path, SpringmvcLeave a Comment

Delivery problem with SQOOP imports

Use the following sqoop1 import when importing

sqoop import –connect jdbc:oracle:thin:@ip:port/ORCL –username user –password pwd –table db.table –target-dir /path –delete-target-dir -m

October 12, 2021By Simo Hadoop export, import, problem, separator, Sqoop, time, utilizationLeave a Comment

Hibernate – uses producers in Tomcat to inject EntityManager

I am running a project using Hibernate and Weld CDI on tomcat 7. I have written a ServletContextListener to create EntityManagerFactory and EntityManager during application startup.

public cl

October 12, 2021By Simo Hibernate EntityManagerLeave a Comment

HBase (2) – Build Standalone HBase

HBase build–Standalone HBase 1, build method description the setup of a single-node standalone HBase. A standalone instance has all
HBase daemons — the Master, RegionServers, and ZooKeeper — runni

October 12, 2021By Simo Hadoop built, HBase, Second, StandaloneLeave a Comment

Event – How do I adjust my event observer in Magento?

My observer is not called. I want to know how to dispatch the event so that I can debug it. < div class="answer"> This is a breakdown of Magento’s Mage_Core_Model_App::dispatchEvent() call, which

October 12, 2021By Simo Hadoop China, debugging, Event, How, Magento, my, observationLeave a Comment

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