IBATIS INTERVIEW QUESTIONS ANSWERS PDF

Articles Tutorials Interview Questions & Answers Certifications Free Books & Sample Chapters Technical Discussions, Your Account | Advertise with us. iBATIS Tutorial for Beginners – Learn iBATIS in simple and easy steps starting from basic to advanced concepts with examples including environment setup. iBATIS| iBATIS Overview| iBATIS Introduction| Get Started with iBATIS – Free iBATIS Tutorials, Reference Manual, and Guide for beginners. Learn how iBATIS .

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The settings appropriate for one application may not be appropriate for another. The only difference required to cause the iBATIS Data Mapper framework to load the property as a List is that the property on the business object must be of type java.

Unfortunately, the semantics for the returning partial data sets is not standardized, so PaginatedList is the best we can do within the scope of a framework. This method can be used whether the result object is a JavaBean or a Map or a primitive wrapper, but that would likely be useless.

Survey Most Productive year for Staffing: Simplicity is the biggest advantage of the MyBatis data mapper over object relational mapping tools. Using dynamic statements is as simple as inserting some conditional tags around the dynamic parts of your SQL. Note An alternate getter syntax exists for boolean type properties.

TransactionManager element configured for global transactions Java.

Therefore all parameters and results must be an Object at intervirw highest level. Where as iBatis is easy to develop and easy to call procedures and functions, no need to struggle for mapping and other things. NET is used to explicitly specify the database column type of the parameter to be set by this property.

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The full classname or an alias must be specified. The properties can be loaded from the classpath use the resource attribute or from any valid URL use the url attribute. These methods are as follows:. One size does not fit all. Answer days, there are rumors that databases and SQL threaten our object models, but that does not have to be the case.

NET distribution intdrview Section 5. Finally there is a queryForList method that takes a row handler.

Some JDBC drivers e. Threads beyond the set value will be blocked until another thread exits. About Sanju I am Software Programmer.

In Example 25, the [brackets] indicate ibafis attributes.

iBATIS – Overview

Your programming platform already provides a capable library for accessing databases, whether through SQL statements or anawers procedures. This means that each call to these methods will be a single unit of work.

A full discussion of the Java classpath is beyond the scope of this document. Here is a simple example:. This is simple indeed, but not ideal if you have a number of statements that must execute as a single unit of work i. Where as iBatis is easy to develop and easy to call procedures and functions, no need to struggle for mapping and other things.

No matter which way you go, you can always change it without impacting your Java code. The four CRUD statement types insert, select, update, and delete are supported.

iBATIS Overview

The column attribute value is the name of the column in the result set from which the value will be used to populate the property. Most SQL statements are useful because we can pass them values at runtime. Because an application language has one Date value type and SQL databases may have many usually at least 3specifying the date may become necessary in some cases to ensure that dates or other types are set correctly.

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Each configuration file can specify only one database or datasource. Standard Type Parameters 3. The constructor of SimpleDataSource requires a Properties parameter that takes a number of configuration properties.

I think the biggest case is MySpacewith millions of users. Example 33 and 34 result in exactly the same object graph and are loaded using the exact same method call from the application.

This inatis words very well for stored procedures and works effectively for reporting applications etc The various methods of the Resources class that load resources using any one of the above schemes are as follows in order:. Note Parameter Map names are always local to the Data Map definition file where they are defined. NET uses a pluggable approach to installing providers. In each case, a parameterObject also may be passed. The jdbcType attribute Java or dbType attribute.

Supported database types for Parameter Maps and Result Maps 3. How does intterview work? This is particularly useful in development, when you might make a change to a Data Map definition and want to see it take effect without restarting a debugging session.

Mapped Statements support caching through reference to a Cache Model element.