gaspersic/java-design-patterns
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First review changes++

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First review changes++
This commit is contained in:
Amit Dixit
2016-04-18 13:14:20 +05:30
parent 06e0a15400
commit 8529d6e34b
9 changed files with 118 additions and 249 deletions
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52
data-mapper/src/main/java/com/iluwatar/datamapper/App.java
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@ -1,5 +1,5 @@
/**
* The MIT License Copyright (c) 2014 Ilkka Seppälä
* The MIT License Copyright (c) 2016 Amit Dixit
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
* associated documentation files (the "Software"), to deal in the Software without restriction,
@ -37,9 +37,6 @@ public final class App {
private static Logger log = Logger.getLogger(App.class);
private static final String DB_TYPE_FIRST = "first";
private static final String DB_TYPE_SECOND = "second";
/**
* Program entry point.
*
@ -47,49 +44,21 @@ public final class App {
*/
public static void main(final String... args) {
if (log.isInfoEnabled() & args.length > 0) {
log.debug("App.main(), 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 StudentFirstDataMapper();
} else if (args.length > 0 && DB_TYPE_FIRST.equalsIgnoreCase(args[0])) {
/* Create new data mapper for type 'first' */
mapper = new StudentFirstDataMapper();
} else if (args.length > 0 && DB_TYPE_SECOND.equalsIgnoreCase(args[0])) {
/* Create new data mapper for type 'second' */
mapper = new StudentSecondDataMapper();
} else {
/* Don't couple any Data Mapper to java.sql.SQLException */
throw new DataMapperException("Following data mapping type(" + args[0] + ") is not supported");
}
/* Create new data mapper for type 'first' */
final StudentDataMapper mapper = new StudentDataMapperImpl();
/* Create new student */
Student student = new Student(1, "Adam", 'A');
/* Add student in respectibe db */
/* Add student in respectibe store */
mapper.insert(student);
if (log.isDebugEnabled()) {
log.debug("App.main(), student : " + student + ", is inserted");
}
log.debug("App.main(), student : " + student + ", is inserted");
/* Find this student */
final Optional<Student> studentToBeFound = mapper.find(student.getStudentId());
if (log.isDebugEnabled()) {
log.debug("App.main(), student : " + studentToBeFound + ", is searched");
}
log.debug("App.main(), student : " + studentToBeFound + ", is searched");
/* Update existing student object */
student = new Student(student.getStudentId(), "AdamUpdated", 'A');
@ -97,15 +66,10 @@ public final class App {
/* Update student in respectibe db */
mapper.update(student);
if (log.isDebugEnabled()) {
log.debug("App.main(), student : " + student + ", is updated");
}
log.debug("App.main(), student : " + student + ", is updated");
log.debug("App.main(), student : " + student + ", is going to be deleted");
/* Delete student in db */
if (log.isDebugEnabled()) {
log.debug("App.main(), student : " + student + ", is deleted");
}
mapper.delete(student);
}