I want to use comments to specify the following hbm configuration:
I don’t know how to provide the class name< /p>
@GeneratedValue(strategy=GenerationType.SEQUENCE, generator=”SEQ_STORE
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 – avoids cross-table external connections when connecting inherited using the Spring Data JPA connection
Consider the following classes in a Spring Data JPA (Hibernate) application:
@Entity
@Inheritance (strategy = InheritanceType.JOINED)
@Table(name = “person”)
public class Person {}
@Entity
@T
What is the best Python implementation in MapReduce mode?
What is the best Python implementation of MapReduce, a framework or library, may be as good as Apache hadoop, but if it is only in Python, and the best in terms of good documentation and ease of un
NHibernate mapping system.type
When I map an entity with a System.Type type attribute, I know that NHibernate maps this to DbType.String, saves the assembly qualified name, and I can see that in the table, the type The column co
Hadoop gen1 vs Hadoop gen2
I am a bit confused about the location of tasktracker in Hadoop-2.x.
The daemons in Hadoop-1.x are namenode, datanode, jobtracker, taskracker and secondarynamenode
The daemons in Hadoop
Hibernate 4.1.2 hhh000342: Unable to get a connection with query metadata: No drivers suitable for JDBC: HSQLDB: MEM: TEST
What did I do wrong?
My persistence.xml
org.hibernate.ejb.HibernatePersistence
User
My code
…
Persistence.cre
NHibernate stateless session – What is the data alias?
NHibernate documents applicable to stateless session interface states, including:
Stateless sessions are vulnerable to < strong>data aliasing effects, due to the
lack of a first-level cache.
Hibernate – grails: Select Return (Random) Null, and the rows in PostgreSQL exist, and the connection pool has been opened
We have developed a Grails 2.0 application, which previously ran smoothly on MySQL
We have been asking administrators to switch to their favorite PostgreSQL
We have added some new featu
HBASE-JAVA-API operation table
package com.itheima;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.*;
import org.apache.hadoop.hbase.client.*;
import org.apache.hadoop.hbase.filter.*;
import o
Why is NHIBERNATE delayed loading binding to session?
Using Castle ActiveRecord, I stumbled upon a problem during lazy loading.
The following works (obviously)
using (new SessionScope())
{
User singleUser = User.FindFirst(…)
User