I’ve recently started learning to use myBatis.I am now facing such a scenario, I need to constantly fetch a new list of Objects through WebService, then for this list, I need to insert/update each object into the oracle DB table through myBatis. The tricky part is, I cannot simply do a batch insert every time, because some of the objects
Tag: sql
JOOQ pojos with one-to-many and many-to-many relations
I am struggling to understand how to handle pojos with one-to-many and many-to-many relationships with JOOQ. I store locations that are created by players (one-to-many relation). A location can hold multiple additional players who may visit it (many-to-many). The database layout comes down to the following: Within my java application, all these informations are stored within one pojo. Note that
Query creation in Spring Data – dynamic where clause
Is there a way in Spring data to dynamically form the where clause? What I want to do is have a method (which is like the findBy / get method) which runs a WHERE and AND using the mentioned properties which are NOT NULL. For example, Our method looks something like this Thanks. Answer Take a look at JPA Specification
JDBC ResultSet: I need a getDateTime, but there is only getDate and getTimeStamp
I would like to get the DATETIME column from an Oracle DB Table with JDBC. Here is my code: I have to identify the column type first. The field I am interested in is recognized as a Types.DATE, but it is really a DATETIME in the DB since it has this format: “07.05.2009 13:49:32” getDate truncates the time: “07.05.2009” and
Incorporate a timeout option when user click the upper right “x” on the window versus a button.
I built a Swing application that works with an MSAccess database. I have various buttons to click when clicked–they will disconnect and unlock the database. Sadly, this is only in a perfect world where users will actually use those buttons and not the little red “x” on the upper right. When some users click that, the database stays locked with
Reading data from mysql database using java
Firstly, I’m reading the product name and number of products from user using jTextFields. For that product I read the product id and price from database using sql query. But in the below code I display the product price in a jtextField but while running tha file I get query executed successfully but I’m not getting anything in the jtextField.
what is the use of annotations @Id and @GeneratedValue(strategy = GenerationType.IDENTITY)? Why the generationtype is identity?
Why we are using this annotations? i need to know if this autoincrement my table id values. (GenerationType.IDENTITY) is there any other types whats actually happening when we use this annotation *Is it necessary to extend Domain abstract class?What is the use? Answer First of all, using annotations as our configure method is just a convenient method instead of coping
Invalid operation for read only resultset: updateString
Following is my code(Re-constructed) which select & update STATUS field depending upon the conditions. (Using Servlets, Oracle as Backend and JDBC driver) I am getting the error while updating: Any suggestions will be appreciated. Update 1: The same code was working when select statement was selecting data from single table, so is there any issue when selecting data from two
Getting id after insert within a transaction (Oracle)
Let’s say I have three tables: team, player, team_player. Table team_player is a bridge table allowing a “many to many” relationship. When someone wants to create a new team, they specify the initial players on that team. How do I insert both the team and team_player rows in the same transaction? That is, I’d like to insert all the team_player
How to use named parameter in plain sql with jooq
I’m using JOOQ with plain/raw SQL, so that means i’m not using any code generation or the fluid DSL thingy. The following code works: Now let’s say i have a query with multiple parameters like this: How do i use a named parameter with these types of queries? I’m thinking something like : But the above code doesn’t work (for