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Test/Doc added

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Test/Doc added
This commit is contained in:
Amit Dixit
2016-04-04 15:31:43 +05:30
parent eb72493f13
commit 59b6b817f4
10 changed files with 475 additions and 328 deletions

34
data-mapper/src/main/java/com/iluwatar/datamapper/App.java

@@ -23,7 +23,6 @@ import java.util.Optional;
import org.apache.log4j.Logger;
/**
*
* The Data Mapper (DM) is a layer of software that separates the in-memory objects from the
* database. Its responsibility is to transfer data between the two and also to isolate them from
* each other. With Data Mapper the in-memory objects needn't know even that there's a database
@@ -39,43 +38,18 @@ public final class App {
private static Logger log = Logger.getLogger(App.class);
private static final String DB_TYPE_ORACLE = "Oracle";
private static final String DB_TYPE_MYSQL = "MySQL";
/**
* Program entry point.
*
* @param args command line args.
*/
public static final void main(final String... args) {
public static void main(final String... args) {
if (log.isInfoEnabled() & args.length > 0) {
log.debug("App.main(), db type: " + args[0]);
}
StudentDataMapper mapper = null;
/* Check the desired db type from runtime arguments */
if (args.length == 0) {
/* Create default data mapper for mysql */
mapper = new StudentMySQLDataMapper();
} else if (args.length > 0 && DB_TYPE_ORACLE.equalsIgnoreCase(args[0])) {
/* Create new data mapper for mysql */
mapper = new StudentMySQLDataMapper();
} else if (args.length > 0 && DB_TYPE_MYSQL.equalsIgnoreCase(args[0])) {
/* Create new data mapper for oracle */
mapper = new StudentMySQLDataMapper();
} else {
/* Don't couple any Data Mapper to java.sql.SQLException */
throw new DataMapperException("Following data mapping type(" + args[0] + ") is not supported");
}
/* Create any type of mapper at implementation which is desired */
/* final StudentDataMapper mapper = new StudentFirstDataMapper(); */
final StudentDataMapper mapper = new StudentSecondDataMapper();
/* Create new student */
Student student = new Student(1, "Adam", 'A');