federated authentication

First, hibernate union the rules of the primary key class 1. Implement the Serializable interface 2. Overriding the hashcode and equals method Two, Hibernate union primary key entity class Rule reason (corresponds to the above rule order) 1. Hibernate depends on the Federated primary key of the database to determine whether a two-row record is the same, and if it is the same object, if not, it is considered a different object. This is reflected in the

+ this.cBisCode.hashCode(); hash = hash * prime + this.cBicNo.hashCode(); return hash; }} The key is that it takes a long time to query the jpql syntax @ namedqueries ({ @ Namedquery (name = "findprmcomputebyid", query = "select D from tbicprmcompute d Where D. id. cbiscode =? 1 and D. id. cbicno =? 2 and D. id. cprodno =? 3 ") }) Daoimpl implementation class @ transactional @ Override Public tbicprmcompute findprmcomputebyid (string cbiscode, string cbicno, string cpro

Tags: sea slow query Scheme federated how CTI SEL alert mysqColumn order to be aware of using federated indexesFor example, when usingSELECT * from user where x=1 and y=2;The index that should be created may be the add key (x, y)How to determine the order of indexesGeneral Experiencecan useSelect COUNT (Distinct x)/count (x) as X_selectivity,COUNT (distinct y)/count (y) as x_selectivity,Count (*),from user;

Tags: strong SP data on AD BS SQL MySQL tableIn the MySQL where condition, there are sometimes a lot of conditions, usually in order to speed up the field will be placed in the federated index, you can quickly improve the search speed;However, a reasonable ordering of the field order in the federated index can improve the speedExample: SELECT * FROM table where (groupid=1000) and (userid=500) and (time=1400

Tags: LAN files INI file Create own port type cannot failedMySQL boot 1067 error, the system log is "service MySQL stopped unexpectedly" in the MySQL log is: "Plugin \ ' federated\ ' is disabled"The specific contents of the error are: 121012 11:35:03 [Note] Plugin ' federated ' is disabled.121012 11:35:03 InnoDB:Error:unable to create temporary file; Errno:2121012 11:35:03 [ERROR] Plugin ' InnoDB ' init fun

MySQL Federated Index DetailedA federated index is also called a composite index. For composite indexes: MySQL left-to-right uses fields from the index, and a query can use only one part of the index, but only the leftmost section. For example, the index is key index (A,B,C). can support a | a,b| A,b,c 3 combinations to find, but B,c is not supported. The index is very effective when the leftmost field is a

Select *from t1left join T2 on T2.sysno =t1. Asysnoleft join T3 on T3.sysno =t2. Asysnoleft join T4 on T4.sysno =t3. Asysnoleft join T5 on T5.sysno =t4. Asysnoleft join T6 on T6.sysno =t5. Asysnoleft join T7 on T7.sysno =t6. Asysnowhere t1.name like '%aaa% 'In the absence of any indexes, fuzzy queries, such SQL performance is the worst, such SQL for the Federated query SQLSelect *from t1left join ( Select * from T2 left joins T3 on T3

Note: index (name,age) indicates that a federated index is established on the Name,age two column because indexes have a critical impact on database query performance, here are some of my summary and experience: a query can use only one index at a time: select name from user where name= ' Plantegg ' and age>35 if Index (name); At Index (age), the MySQL query optimizer automatically chooses a lasso to use; MySQL chooses which index, so to see:mysql>

MySQL FEDERATED engine and mysqlfederated EngineThe FEDERATED storage engine accesses the data in the table of the remote database, rather than the local table. This feature facilitates some development applications. You can directly create a federated table locally to connect to the remote data table. After configuration, the data in the local table can be direc

This article transferred from: http://www.cnblogs.com/lanxiaoke/p/6357501.htmlSummary Certification Simple introductionAbstract authentication is the improvement of the basic authentication, that is, the use of abstract instead of account password, so as to prevent the disclosure of account password in plaintext transmissionPrior to the summary certification is not very familiar with, but also thanks to the

It is very simple to use SQL to implement union query, just write the SQL statement, the first time you encounter hibernate to achieve multi-table union query when the time is still dumbfounded. Finally read the next information, only to realize that hibernate implementation of multi-table joint query and SQL is not much difference. Hibernate is a lot of implementations rely on the relationship, but if the two tables, the amount of data is very large, it is not appropriate to match the r

There are several ways to configure Federated primary keys, only one that I use is recorded here.Directly on the codeUse @idclass, red callout. PackageCom.szy.operation.stat.model.agent.school;Importjava.util.Date;ImportJavax.persistence.Column;Importjavax.persistence.Entity;Importjavax.persistence.Id;ImportJavax.persistence.IdClass;Importjavax.persistence.Table;Importcom.szy.common.model.IEntity; @Entity @table (name= "Test_test_test")@IdClass (agent

It is very simple to use SQL to implement union query, just write the SQL statement, the first time you encounter hibernate to achieve multi-table union query when the time is still dumbfounded. Finally read the next information, only to realize that hibernate implementation of multi-table joint query and SQL is not much difference.Hibernate is a lot of implementations rely on the relationship, but if the two tables, the amount of data is very large, it is not appropriate to match the relationsh

The primary key can be a property or an attribute group. Sometimes a property group with multiple attributes must be a primary key to uniquely identify each tuple. Sometimes only joint primary keys are more realistic. Federated primary keys are generally used in many-to-many connections. such as the university elective system. Each student can take multiple courses, and each course can have more than one student elective. Each student has a score for

Recently did a federated login, the local test passed, but an error on the line. Later, it was observed through log information that when the token was requested, the other party returned empty. Now write the request method before and after the modification below:Before, the token was not requested:private static Jsonobject Getjsonfromurl (String urlstr) {//Org.apache.http.client.HttpClientHttpClient httpClient = New Defaulthttpclient ();//Org.apache.

In data analysis, there is often a need to count certain information based on time and a dimension. In this case, do we choose to use a federated index or a few separate indexes?In this range index, indexing invalidation is something that happens frequently. For example, to find the data based on a time period, if the time period is too long, the optimizer chooses not to go through the index, and we are going to force index the line for such statement

Plugin 'federated 'is disabled or 1067 error startup error and "service mysql unexpectedly stopped" solution, federated1067 MYSQL startup reports a 1067 error. In the system log "service mysql unexpectedly stopped", the Mysql Log is: "Plugin 'federated 'is disabled" I found a solution on the Internet:1. Add a line to [mysqld] In MY. ini fileTmpdir = "D:/MySQL/data /"After the modification, it still cannot

Joint primary key is to make several fields as the primary key, or more than one primary key can be used as a joint primary key or composite primary key, the development of joint primary key entity class object must do three requirements, one is to provide a parameterless constructor, the second is to implement the serialization of serial interface, The third is that the hashcode and equals methods must be overridden, and the arguments are properties of the composite primary key. Here our instan

Today the project encountered this problem, engaged in the majority of days, now recordedHibernate Federated Primary Key configuration (multiple fields together as primary key)classname= "COM.CSKJ.HIBERNATE.MAP.BBWJJC"Table= "BB_WJJC"Schema= "dbo"Catalog= "WJGL"> Composite-idname= "id"class= "Com.cskj.hibernate.map.BbWjjcId"> Key-propertyname= "Wjtmid"type= "Java.lang.Long"> columnname= "Wjtmid" /> Key-prope

Android Chamber Federated Asynclistutil implements Recyclerview page load ORM dataI wrote a series of page loading mechanisms and technical routes for asynclistutil implementation of Recyclerview and ListView, see Appendix 4, 5. Also wrote a list of articles about the official Android ORM database: The Office technology, see appendix article 1, 2. Now combined with Android page loading framework asynclistutil, as well as the Android official ORM datab