Wso2Dss Box_Carring not working in WSO2esb4.8.0

Question

I am working with wso2dss3.0.1 and wso2esb4.8.0.I wish to work with Transactions for that i enabled box_carying in wso2dss and its working fine.Means i wish insert the data into

Answer 1

There is a workaround, use request_box to wrap multiple sql non-query operation in a single request to avoid using session. If any sql in the request fails, the whole request will be rollback.

First you need a mysql database named MyDB with a user named root whose password is root and a Postgresql database also named MyDB with a user named postgres whose password is root. Then create a table named customer in both databases:

    CREATE TABLE customer (
        cust_id int(11) NOT NULL,
        name varchar(255) NOT NULL,
        PRIMARY KEY (`cust_id`)
    );

The sample inserts a record into mysql, then inserts two records with the same cust_id into postgres which causes an error, so the whole transaction will be rolled back and you will not see the record inserted into mysql.

Below is my proxy service definition:

    
    
        
            
                
                
                
                    
                        
                            
                            
                                
                                    
                                        $1
                                        $2
                                    
                                    
                                        $1
                                        $2
                                    
                                    
                                        $1
                                        $2
                                    
                                
                            
                        
                    
                    
                        
                        
                    
                
                
                    
                    
                
            
            
                
            
        
        
    

My data service is defined as below:

    
    
        
            org.postgresql.xa.PGXADataSource
            
                localhost
                5432
                MyDB
                postgres
                root
            
        
        
            com.mysql.jdbc.jdbc2.optional.MysqlXADataSource
            
                jdbc:mysql://localhost:3306/MyDB
                root
                root
            
        
        
            INSERT INTO customer VALUES(?,?)
            
            
        
        
            INSERT INTO customer VALUES(?,?)