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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 annotation development

We use annotations in hibernate, which can help us simplify hbm file configuration.
1.1. PO class annotation configuration
@Entity declares an entity br/>@Table to describe the class and table cor

October 12, 2021By Simo Hibernate annotation, Development, HibernateLeave a Comment

How to tell Hibernate Conditionally ignore the columns in Crud operations

Is it possible in some way to tell Hibernate to conditionally ignore missing columns in the database table when performing CRUD operations?

I have a Java application that uses Hibernate as th

October 12, 2021By Simo Hibernate condition, CRUD, Hibernate, how to tell, Ignore, land, operationLeave a Comment

The difference between Hadoop – Reduce Task and Reducer

“The reducer is different from the reduction task. The reducer can run multiple reduction tasks”. Can someone explain this with the following example?

foo.txt: Very good, this is the foo file

October 12, 2021By Simo Hadoop between, Hadoop, Reduce, REDUCER, TaskLeave a Comment

NHIBERNATE line number exceeds partition C #

I am new to nhibernate and need your help.

How to execute this sql query in nhibernate-criteria C#

select * from
(
select *, row_number() over (partition by questionaireId order by ste

October 12, 2021By Simo Hibernate C #, exceeding, line number, NHIBERNATE, partitionLeave a Comment

HBase table two data backup methods

Hbase table two data backup methods-import and export examples p> This article will provide two backup methods——

1) Back up a table in hbase based on the class provided by Hbase

2) Fast

October 12, 2021By Simo Hadoop Backup, data, HBase, method, table, twoLeave a Comment

Use the Hibernate Projections on Entity With Manytoone relationship, use fewer columns on SQL query

I am trying to build a smaller SQL to avoid the “select * from A” built for hibernate Criteria by default.

If I Using simple fields (no relation), through “Transformers”, I can manage to have

October 12, 2021By Simo Hibernate entity, Hibernate, less, Manytoone, More, Projections, query, relationship, SQL, Through, useLeave a Comment

When the component is removed, NHibernate is incorrectly compared to NULL.

I have a problem updating the collection of components on the entity. It was originally mapped as a package, but this resulted in deleting and reinserting all entries every time. Change it to a gro

October 12, 2021By Simo Hibernate comparison, Component, delete, error, land, NHIBERNATE, null, procedure, timeLeave a Comment

Select multiple hibernate import.sql depending on the conditions

How to specify the import file I want to run hibernate. Is there a configuration option I can put (I think I have seen something similar somewhere) I can say custom. sql file and hibernate will run

October 12, 2021By Simo Hibernate By, conditions, Hibernate, import, import.sql, multiple, options, SQLLeave a Comment

Hibernate returns ArrayIndexOutofbounds

The entity class is:
DeviceWithReading. java

package com.fde.entity;
import java.util.Set;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchTyp

October 12, 2021By Simo Hibernate ArrayIndexOutofbounds, Hibernate, one-to-many, returnLeave a Comment

【Havel 定理】Degree Sequence of Graph G

[Subject link] http://acm.hdu.edu.cn/showproblem.php?pid=2454

Blog address: https://www.cnblogs.com/debugcool/archive/2011/04/23/HDOJ2454.html

In a word, the Havel theorem of vertex deg

October 12, 2021By Simo Hadoop degree, Graph, HAVEL, SequenceLeave a Comment

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