IBATIS INTERVIEW QUESTIONS PDF
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These methods are as follows:. But for simple requirements generally read-only, you can use a simplified semantic.
The classes for the super and sub resultMaps need not queetions the same, and do not need to be related in any way.
The only way to return a connection to the DataSource or close the connection is to call commitTransaction or endTransaction.
The immediate usefulness of this might not become apparent until a more complex situation is encountered. The third option is to convert your XML files as in 2 and your Java code.
For your convenience, primitive types are aliased by the framework. For example, you may not want a column name intended for an order by clause to end up as a property in your business object, or as a field value on your server page. Hibernate and Ibatis both are the persistance frameworks. The FIFO cache is good for usage patterns where a particular query will be referenced a few times in quick succession, but then possibly not queestions some time later.
The dynamic element is optional and provides a way to manage a prepend in cases where the prepend e.
20 REAL TIME IBATIS Interview Questions and Answers
Example 20 shows Example 18 coded with inline parameters. DateTimemost SQL databases have more than one. Quetions solution words very well for stored procedures and works effectively for reporting applications etc Provide a parameter, either as an object or a native type.
Implicit Result Maps 3. This is a safe solution in that fewer compatibility issues will occur between the mapping files there are a few. Another way to skip a result map is to use column aliasing to make the column names match the properties names, as shown in Example The Java API 4. It may also be the name of an entry in a Map Java or IDictionary. You are commenting using your Facebook account. If you need to select multiple rows, iBATIS can return a list of objects, each mapped to a row in the result set:.
An Introduction to iBatis (MyBatis), An alternative to Hibernate and JDBC
Ibatjs a statement does expect parameters, then a valid parameterObject is required. Note SqlMap transactions use ThreadLocal store for storing transactional objects. For a complete list, see Section 3. Some values in a database are know to change more slowly than others.
JAR Files and Dependencies 4. One is included with the framework in this optional package.
Top + iBATIS Interview Questions – Best iBATIS Interview Questions and Answers | Wisdom Jobs
An exception will be thrown if you call BeginTransaction from the same thread more than once or call CommitTransaction or RollbackTransaction first.
The generate tag supports two attributes: Example 18 shows an external Parameter Map.
The configuration file is named after your assembly but adds a. NET a RowDelegate to do the dirty work. Example 4 is longer and more complex than Example 3, but considering what you get in return, it seems like a fair trade.
Of course, very few developers would have two property names that were so simiilar.
