JDeveloper 11g`s REST web services
advertisement
SAGE Computing Services
Customised Oracle Training Workshops and Consulting
JDeveloper 11g's REST web services
....A change is as good as a REST
Chris Muir
Oracle Consultant and Trainer
http://one-size-doesnt-fit-all.blogspot.com
Oracle ACE Director - Fusion Middleware
Agenda
• Part I: ABCs of Web Services
• Part II: REST Web Services in a Nutshell
• Part III: Getting your hands dirty with code
Part I:
Web Services
Photo thanks to Lexnger@ Flickr.com under CC
What are Web Services?
The W3C defines a "web service" as "a
software system designed to support
interoperable machine-to-machine
interaction over a network.”
The traditional “Enterprise” view
The Traditional “Enterprise” View
Images thanks to Harwan @ IconArchive.com – free for non commercial use
The contemporary view
The “Contemporary” View
Images thanks to Harwan @ IconArchive.com – free for non commercial use
Key benefits
Key Benefits?
•
•
•
•
•
Share data (near realtime)
System interoperability
Low cost internet delivery
Standardized
Loosely coupled
Photo thanks to vernhart@ Flickr.com under CC
History
History?
RFC-707 A High Level Framework for Network Based Resource Sharing
(Remote Procedure Call)
Microsoft DCOM
Java RMI
CORBA
SOAP RPC Style
SOAP Document Style
REST
IETF – Internet Engineering Task Fask – ISOC – Internet Society
Choice
SOAP vs REST
Enterprise Ready
Programmer Friendly
•
•
•
•
•
•
•
•
•
Only over HTTP
Verb first (only 4 commands)
Simple
Familiar
•
•
•
•
Overly simplistic security
Not 100% ideal for SOA
Little standardization
No emphasis on contract
Supports multiple protocols
Contract first
Procedural (RPC) based
Standardized
Maximum security
• Ideal for SOA support
• Over engineered
• Simple solutions become
complicated
• Complex security
• Payload inefficiency
Part II – REST Web Services in a Nutshell
Part II:
REST Web
Services in a
Nutshell
Photo thanks to Caucas' @ Flickr.com under CC
What is REST?
Q: What is REST?
A: It stands for Representational State Transfer
Q: Huh? Can you say that in English?
A: Let me explain, do you surf the web?
Q: Um, yes I do (I thought I was asking the questions)....?
A: Then you already know it.
Browser/URL
Understand basics of HTTP
The Request – HTTP Protocol
GET /about_sage_computing_services.html HTTP/1.1
Host: www.sagecomputing.com.au
User-Agent: Mozilla/5.0 Gecko/20100914 Firefox/3.6.10
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
Cookie: __utma=4761137.486424683.1273755779.1285256345.1285459361.13;;
If-Modified-Since: Sun, 31 Jan 2010 13:35:33 GMT
If-None-Match: "1a690fe-40df-f1645340" Cache-Control: max-age=0
HTTP
GET/PUT/POST/DELETE
URIs
Images thanks to Harwan @ IconArchive.com – free for non commercial use
Accept
HTTP Response
The Response - HTTP Protocol
HTTP/1.1 200 OK
Date: Sun, 26 Sep 2010 00:02:25 GMT
Server: Apache/2.0.55 (Ubuntu)
Connection: Keep-Alive
Keep-Alive: timeout=15, max=96
Etag: "1a690fe-40df-f1645340“
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en“>
<head>
<title>SAGE Computing Services - About us</title
</head>
.... Etc ....
</html>
HTTP Error Codes
Payload/Body
Images thanks to Harwan @ IconArchive.com – free for non commercial use
Part II – REST Web Services in a Nutshell
REST Web Services in a Nutshell
• REST also suits web services
• Resources – URIs = intuitive by
design – gives users & developers
ability to anticipate design
• Based on HTTP verbs –
get/put/post/delete = simple to
understand
• Stateless = scalable
Photo thanks to blitzmaerker @ Flickr.com under CC
Support for REST Web Services
Support?
JAX-RS Jersey Website
Java JAX-RS “Jersey”
JAX-RS in detail
Java JAX-RS & Jersey
•
•
•
•
•
JAX-RS Specification (API)
Introduced Java SE 5.0
Uses a simplified POJO approach
Implements both the client and/or server
Jersey is Oracle/Sun’s Reference Implementation
• Jersey 1.0 – 1.0.3 = JAX-RS 1.0 Spec
• Jersey 1.1+ = JAX-RS 1.2 Spec
Oracle JDeveloper 11g
Oracle’s JDeveloper 11g
• Recommended version 11.1.1.3.0+
• Many minor issues in earlier versions
• Jersey 1.1.5.1+ supported (latest none beta
1.4)
• http://one-size-doesnt-fitall.blogspot.com/2010/10/rest-web-servicesin-oracles-jdeveloper.html
Part III – Getting your hands dirty with code
Part III:
Getting your
hands dirty
with code
Photo thanks to Caucas' @ Flickr.com under CC
Database “Departments” query
HTML Output/Browser
Data is Beautiful
Sad iPhone
Data
01 <html>
02 <head>
03
<style type="text/css">
04
table {background-color:#F2F2F5;}
05
td {color:#000000; font-family:Arial; padding:8px; background-color:#F2F2F5;}
06
th {font-family:Arial; font-size:12pt; padding:8px; background-color:#CFE0F1;}
07
</style>
08 </head>
09 <body>
10
<table border="0" cellpadding="0" cellspacing="0">
11
<tr>
12
<th>DEPARTMENT_ID</th>
13
<th>DEPARTMENT_NAME</th>
14
</tr>
15
<tbody>
16
<tr> <td>10</td> <td>Administration</td>
</tr>
17
<tr> <td>20</td> <td>Marketing</td>
</tr>
18
<tr> <td>30</td> <td>Purchasing</td>
</tr>
19
<tr> <td>40</td> <td>Human Resources</td> </tr>
20
<tr> <td>50</td> <td>Shipping</td>
</tr>
21
<tr> <td>60</td> <td>IT</td>
</tr>
22
<tr> <td>70</td> <td>Public Relations</td> </tr>
23
<tr> <td>80</td> <td>Sales</td>
</tr>
24
<tr> <td>90</td> <td>Executive</td>
</tr>
25
<tr> <td>100</td> <td>Finance</td>
</tr>
26
</tbody>
27
</table>
28 </body>
29 </html>
30
31
32
HTML page – markup + data
01 <html>
02 <head>
03
<style type="text/css">
04
table {background-color:#F2F2F5;}
05
td {color:#000000; font-family:Arial; padding:8px; background-color:#F2F2F5;}
06
th {font-family:Arial; font-size:12pt; padding:8px; background-color:#CFE0F1;}
07
</style>
08 </head>
09 <body>
10
<table border="0" cellpadding="0" cellspacing="0">
11
<tr>
12
<th>DEPARTMENT_ID</th>
13
<th>DEPARTMENT_NAME</th>
14
</tr>
15
<tbody>
16
<tr> <td>10</td> <td>Administration</td>
</tr>
17
<tr> <td>20</td> <td>Marketing</td>
</tr>
18
<tr> <td>30</td> <td>Purchasing</td>
</tr>
19
<tr> <td>40</td> <td>Human Resources</td> </tr>
20
<tr> <td>50</td> <td>Shipping</td>
</tr>
21
<tr> <td>60</td> <td>IT</td>
</tr>
22
<tr> <td>70</td> <td>Public Relations</td> </tr>
23
<tr> <td>80</td> <td>Sales</td>
</tr>
24
<tr> <td>90</td> <td>Executive</td>
</tr>
25
<tr> <td>100</td> <td>Finance</td>
</tr>
26
</tbody>
27
</table>
28 </body>
29 </html>
30
31
32
HTML page - makrup
01 <html>
02 <head>
03
<style type="text/css">
04
table {background-color:#F2F2F5;}
05
td {color:#000000; font-family:Arial; padding:8px; background-color:#F2F2F5;}
06
th {font-family:Arial; font-size:12pt; padding:8px; background-color:#CFE0F1;}
07
</style>
08 </head>
09 <body>
10
<table border="0" cellpadding="0" cellspacing="0">
11
<tr>
12
<th>DEPARTMENT_ID</th>
13
<th>DEPARTMENT_NAME</th>
14
</tr>
15
<tbody>
16
<tr> <td>10</td> <td>Administration</td>
</tr>
17
<tr> <td>20</td> <td>Marketing</td>
</tr>
18
<tr> <td>30</td> <td>Purchasing</td>
</tr>
19
<tr> <td>40</td> <td>Human Resources</td> </tr>
20
<tr> <td>50</td> <td>Shipping</td>
</tr>
21
<tr> <td>60</td> <td>IT</td>
</tr>
22
<tr> <td>70</td> <td>Public Relations</td> </tr>
23
<tr> <td>80</td> <td>Sales</td>
</tr>
24
<tr> <td>90</td> <td>Executive</td>
</tr>
25
<tr> <td>100</td> <td>Finance</td>
</tr>
26
</tbody>
27
</table>
28 </body>
29 </html>
30
31
32
Data – 1 per line
10
Administration
20
Marketing
30
Purchasing
40
Human Resources
50
Shipping
60
IT
70
Public Relations
80
Sales
90
Executive
100
Finance
Data – comma delimiited
DEPARTMENT_ID,DEPARTMENT_NAME
10,Administration
20,Marketing
30,Purchasing
40,Human Resources
50,Shipping
60,IT
70,Public Relations
80,Sales
90,Executive
100,Finance
Data - XML
<DEPARTMENTS>
<DEPT><DEPTID>10</DEPTID><NAME>Administration</NAME></DEPT>
<DEPT><DEPTID>20</DEPTID><NAME>Marketing</NAME></DEPT>
<DEPT><DEPTID>30</DEPTID><NAME>Purchasing</NAME></DEPT>
<DEPT><DEPTID>40</DEPTID><NAME>Human Resources</NAME></DEPT>
<DEPT><DEPTID>50</DEPTID><NAME>Shipping</NAME></DEPT>
<DEPT><DEPTID>60</DEPTID><NAME>IT</NAME></DEPT>
<DEPT><DEPTID>70</DEPTID><NAME>Public Relations</NAME></DEPT>
<DEPT><DEPTID>80</DEPTID><NAME>Sales</NAME></DEPT>
<DEPT><DEPTID>90</DEPTID><NAME>Executive</NAME></DEPT>
<DEPT><DEPTID>100</DEPTID><NAME>Finance</NAME></DEPT>
</DEPARTMENTS>
Building a REST Web Service
Building a REST Web Service
And now for a bit of Java
And now for a bit of Java
JDBC – Java API for Database Connectivity
01 public class DepartmentsResource {
02
03 public static String queryDepartmentsSQL() throws SQLException {
Connection jdbcConn =
04
DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:xe","hr","hr");
05
06
String query = "SELECT department_id, department_name FROM departments";
07
Statement statement = jdbcConn.createStatement();
08
ResultSet resultSet = statement.executeQuery(query);
09
10
String result = "";
11
while (resultSet.next()) {
12
result = result + resultSet.getInt(1) + "\n";
13
result = result + resultSet.getString(2) + "\n";
14
}
15
statement.close();
16
jdbcConn.close();
17
18
return result;
19
20 }
21
22 public static void main(String[] args) throws SQLException {
String result = DepartmentsResource.queryDepartmentsSQL();
23
System.out.println(result);
24
25 }
26 }
RESTDemo3/Project1
RESTDemo3/Project1
01 @Path("/Departments")
02 public class DepartmentsResource {
03
04 public static String queryDepartmentsSQL() throws SQLException {
05
Connection jdbcConn =
06
DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:xe","hr","hr");
07
08
String query = "SELECT department_id, department_name FROM departments";
09
Statement statement = jdbcConn.createStatement();
10
ResultSet resultSet = statement.executeQuery(query);
11
12
String result = "";
13
while (resultSet.next()) {
14
result = result + resultSet.getInt(1) + "\n";
15
result = result + resultSet.getString(2) + "\n";
16
}
17
statement.close();
18
jdbcConn.close();
19
20
return result;
21 }
22
23 @GET
24 @Produces("plain/text")
25 public String getDepartments() throws SQLException {
26
return DepartmentsResource.queryDepartmentsSQL();
27 }
28 }
RESTDemo3/Project2
You are now REST certified
Make solution more Object Oriented
POJO
And now for some more Java
A Plain Old Java Object
POJO code
01 public class Department {
02
03 private int deptId;
04 private String name;
05
06 public Department(int newDeptId, String newName) {
07
deptId = newDeptId;
08
name = newName;
09 }
10
11 public void setDeptId(int newDeptId) {
12
deptId = newDeptId;
13 }
14
15 public int getDeptId() {
16
return deptId;
17 }
18
19 public void setName(String newName) {
20
name = newName;
21 }
22
23 public String getName() {
24
return name;
25 }
26 }
RESTDemo3/Project3
01 @Path("/Departments")
02 public class DepartmentsResource {
03
04 public static ArrayList<Department> queryDepartmentsSQL() throws SQLException {
05
Connection jdbcConn =
06
DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:xe","hr","hr");
07
08
String query = "SELECT department_id, department_name FROM departments";
09
Statement statement = jdbcConn.createStatement();
10
ResultSet resultSet = statement.executeQuery(query);
11
12
ArrayList<Department> departments = new ArrayList<Department>();
13
while (resultSet.next()) {
14
Department dept = new Department(resultSet.getInt(1), resultSet.getString(2));
15
departments.add(dept);
16
}
17
statement.close();
18
jdbcConn.close();
19
20
return departments;
21 }
22
23 @GET
24 @Produces("plain/text")
25 public String getDepartments() throws SQLException {
26
String result = "";
27
for (Department department : DepartmentsResource.queryDepartmentsSQL()) {
28
result = result + department.getDeptId() + "," + department.getName() + "\n";
29
}
30
return result;
31 }
32 } RESTDemo3/Project3
01 @Path("/Departments")
02 public class DepartmentsResource {
03
04 public static Department queryDepartmentSQL(int deptId) throws SQLException {
05
Connection jdbcConn =
06
DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:xe","hr","hr");
07
08
String query = "SELECT department_id, department_name FROM departments "
09
+ "WHERE department_id = ?";
10
PreparedStatement statement = jdbcConn.prepareStatement(query);
11
statement.setInt(1, deptId);
12
ResultSet resultSet = statement.executeQuery();
13
14
Department department = null;
15
if (resultSet.next())
16
department = new Department(resultSet.getInt(1), resultSet.getString(2));
17
18
statement.close();
19
jdbcConn.close();
20
21
return department;
22 }
23
24 @GET
25 @Path("/{dept_id}") // /Departments/{dept_id}
26 @Produces("plain/text")
27 public String getDepartment(@PathParam("dept_id") int deptId) throws SQLException
28
Department department = DepartmentsResource.queryDepartmentSQL(deptId);
29
30
return department.getDeptId() + "," + department.getName() + "\n";
31 }
32 } RESTDemo3/Project4
24
25
26
27
28
29
30
31
32
33
34
@GET
@Path("/{dept_id}")
@Produces("plain/text")
public String getDepartment(@PathParam("dept_id") int deptId) throws SQLException
Department department = DepartmentsResource.queryDepartmentSQL(deptId);
if (department == null)
throw new NotFoundException("Department ID " + deptId + " not found");
return department.getDeptId() + "," + department.getName() + "\n";
}
RESTDemo3/Project5
XML?
<DEPARTMENTS>
<DEPT><DEPTID>10</DEPTID><NAME>Administration</NAME></DEPT>
<DEPT><DEPTID>20</DEPTID><NAME>Marketing</NAME></DEPT>
<DEPT><DEPTID>30</DEPTID><NAME>Purchasing</NAME></DEPT>
<DEPT><DEPTID>40</DEPTID><NAME>Human Resources</NAME></DEPT>
<DEPT><DEPTID>50</DEPTID><NAME>Shipping</NAME></DEPT>
<DEPT><DEPTID>60</DEPTID><NAME>IT</NAME></DEPT>
<DEPT><DEPTID>70</DEPTID><NAME>Public Relations</NAME></DEPT>
<DEPT><DEPTID>80</DEPTID><NAME>Sales</NAME></DEPT>
<DEPT><DEPTID>90</DEPTID><NAME>Executive</NAME></DEPT>
<DEPT><DEPTID>100</DEPTID><NAME>Finance</NAME></DEPT>
</DEPARTMENTS>
01 import javax.xml.bind.annotation.*;
02
03 @XmlAccessorType(XmlAccessType.FIELD)
04 @XmlType(name = "", propOrder = { "deptId", "name" })
05 @XmlRootElement(name = "DEPT")
06 public class Department {
07
08
@XmlElement(name = "DEPTID", required = true)
09
private int deptId;
10
@XmlElement(name = "NAME", required = true)
11
private String name;
12
13
public Department() { } // default no-arg constructor required for JAXB
14
15
public Department(int newDeptId, String newName) {
16
deptId = newDeptId;
17
name = newName;
18
}
19
20
public void setDeptId(int newDeptId) { deptId = newDeptId; }
21
22
public int getDeptId() { return deptId; }
23
24
public void setName(String newName) { name = newName; }
25
26
public String getName() { return name; }
27 }
28
29
30
31
32 RESTDemo3/Project6
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
@GET
// @Path("/Departments")
@Produces("plain/text")
public String getDepartments() throws SQLException {
String result = "";
for (Department department : DepartmentResources.queryDepartmentsSQL()) {
result = result + department.getDeptId() + "," + department.getName() + "\n";
}
return result;
}
@GET
@Path("/{dept_id}") // /Departments/{dept_id}
@Produces("plain/text")
public String getDepartment(@PathParam("dept_id") int deptId) throws SQLException {
Department department = DepartmentResources.queryDepartmentSQL(deptId);
if (department == null)
throw new NotFoundException("Department ID " + deptId + " not found");
return department.getDeptId() + "," + department.getName() + "\n";
}
@GET
@Path("/{dept_id}") // /Departments/{dept_id}
@Produces("application/xml")
public Department getDepartmentXML(@PathParam("dept_id") int deptId) throws SQLExce
Department department = DepartmentResources.queryDepartmentSQL(deptId);
if (department == null)
throw new NotFoundException("Department ID " + deptId + " not found");
return department;
} RESTDemo3/Project6
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
@GET
// @Path("/Departments")
@Produces("plain/text")
public String getDepartments() throws SQLException {
String result = "";
for (Department department : DepartmentsResource.queryDepartmentsSQL()) {
result = result + department.getDeptId() + "," + department.getName() + "\n";
}
return result;
}
@GET
@Path("/{dept_id}") // /Departments/{dept_id}
@Produces("plain/text")
public String getDepartment(@PathParam("dept_id") int deptId) throws SQLException {
Department department = DepartmentsResource.queryDepartmentSQL(deptId);
if (department == null)
throw new NotFoundException("Department ID " + deptId + " not found");
return department.getDeptId() + "," + department.getName() + "\n";
}
@GET
@Path("/{dept_id}") // /Departments/{dept_id}
@Produces("application/xml")
public Department getDepartmentXML(@PathParam("dept_id") int deptId) throws SQLExce
Department department = DepartmentsResource.queryDepartmentSQL(deptId);
if (department == null)
throw new NotFoundException("Department ID " + deptId + " not found");
return department;
} RESTDemo3/Project6
<DEPARTMENTS>
<DEPT><DEPTID>10</DEPTID><NAME>Administration</NAME></DEPT>
<DEPT><DEPTID>20</DEPTID><NAME>Marketing</NAME></DEPT>
<DEPT><DEPTID>30</DEPTID><NAME>Purchasing</NAME></DEPT>
<DEPT><DEPTID>40</DEPTID><NAME>Human Resources</NAME></DEPT>
<DEPT><DEPTID>50</DEPTID><NAME>Shipping</NAME></DEPT>
<DEPT><DEPTID>60</DEPTID><NAME>IT</NAME></DEPT>
<DEPT><DEPTID>70</DEPTID><NAME>Public Relations</NAME></DEPT>
<DEPT><DEPTID>80</DEPTID><NAME>Sales</NAME></DEPT>
<DEPT><DEPTID>90</DEPTID><NAME>Executive</NAME></DEPT>
<DEPT><DEPTID>100</DEPTID><NAME>Finance</NAME></DEPT>
</DEPARTMENTS>
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "", propOrder = { "departments" })
@XmlRootElement(name = "DEPARTMENTS")
public class Departments {
@XmlElement(name = "DEPT", required = true)
protected List<Department> departments;
public List<Department> getDepartments() {
if (departments == null) {
departments = new ArrayList<Department>();
}
return this.departments;
}
}
RESTDemo3/Project7
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
public static Departments queryDepartmentsSQL() throws SQLException {
Connection jdbcConn =
DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:home","hr","hr");
String query = "SELECT department_id, department_name FROM departments";
Statement statement = jdbcConn.createStatement();
ResultSet resultSet = statement.executeQuery(query);
Departments departments = new Departments();
List<Department> departmentList = departments.getDepartments();
while (resultSet.next()) {
Department dept = new Department(resultSet.getInt(1), resultSet.getString(2));
departmentList.add(dept);
}
statement.close();
jdbcConn.close();
return departments;
}
@GET
@Produces("application/xml")
public Departments getDepartmentsXML() throws SQLException {
return DepartmentsResource.queryDepartmentsSQL();
}
RESTDemo3/Project7
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
public static void insertDepartmentSQL(int deptId, String name)
throws SQLException {
Connection jdbcConn =
DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:xe","hr","hr");
String insert = "INSERT INTO departments (department_id, department_name) "
+ "VALUES (?, ?)";
PreparedStatement statement = jdbcConn.prepareStatement(insert);
statement.setInt(1, deptId);
statement.setString(2, name);
boolean result = statement.execute();
jdbcConn.commit();
statement.close();
jdbcConn.close();
}
@POST
@Path("/{dept_id}")
public void insertDepartment(@PathParam("dept_id") int deptId
,@FormParam("name") String name)
throws SQLException {
DepartmentsResource.insertDepartmentSQL(deptId, name);
}
RESTDemo3/Project8
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
public static void updateDepartmentSQL(int deptId, String name)
throws SQLException {
Connection jdbcConn =
DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:xe","hr","hr");
String update = "UPDATE departments SET department_name = ? "
+ "WHERE department_id = ?";
PreparedStatement statement = jdbcConn.prepareStatement(update);
statement.setString(1, name);
statement.setInt(2, deptId);
boolean result = statement.execute();
jdbcConn.commit();
statement.close();
jdbcConn.close();
}
@PUT
@Path("/{dept_id}")
public void updateDepartment(@PathParam("dept_id") int deptId
,@FormParam("name") String name)
throws SQLException {
DepartmentsResource.updateDepartmentSQL(deptId, name);
}
RESTDemo3/Project8
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
public static void deleteDepartmentSQL(int deptId)
throws SQLException {
Connection jdbcConn =
DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:xe","hr","hr");
String delete = "DELETE departments WHERE department_id = ?";
PreparedStatement statement = jdbcConn.prepareStatement(delete);
statement.setInt(1, deptId);
boolean result = statement.execute();
jdbcConn.commit();
statement.close();
jdbcConn.close();
}
@DELETE
@Path("/{dept_id}")
public void deleteDepartment(@PathParam("dept_id") int deptId)
throws SQLException {
DepartmentsResource.deleteDepartmentSQL(deptId);
}
RESTDemo3/Project8
(Part IV The stuff I didn’t cover)
•
•
•
•
•
HATEOAS
Security
JSON
WADL
Designing REST web services
"Any intelligent fool can make things bigger, more complex, and more
violent. It takes a touch of genius -- and a lot of courage -- to move in
the opposite direction.“
-- Albert Einstein
SAGE Computing Services
Customised Oracle Training Workshops and Consulting
Questions and Answers?
Presentations are available from our website:
www.sagecomputing.com.au
enquiries@sagecomputing.com.au
chris.muir@sagecomputing.com.au
http://one-size-doesnt-fit-all.blogspot.com
Twitter: chriscmuir
Linkedin: http://au.linkedin.com/in/chriscmuir
