Assignment-2: Uses DynamoDB to store blackboard.

README.md

@@ -1,2 +1,3 @@
 # Could-Computing
-Assignment 
+## Assignment-2
+Uses `DynamoDB` tables to store all Blackboard data. 

pom.xml

@@ -34,8 +34,16 @@
                 <type>pom</type>
                 <scope>import</scope>
             </dependency>
+            <dependency>
+      <groupId>com.amazonaws</groupId>
+      <artifactId>aws-java-sdk-bom</artifactId>
+      <version>1.11.327</version>
+      <type>pom</type>
+      <scope>import</scope>
+    </dependency>
         </dependencies>
     </dependencyManagement>
+
 
     <dependencies>
         <dependency>
@@ -64,6 +72,14 @@
     <artifactId>activation</artifactId>
     <version>1.1.1</version>
 </dependency>
+<dependency>
+    <groupId>com.amazonaws</groupId>
+    <artifactId>aws-java-sdk-s3</artifactId>
+  </dependency>
+  <dependency>
+    <groupId>com.amazonaws</groupId>
+    <artifactId>aws-java-sdk-dynamodb</artifactId>
+  </dependency>
     </dependencies>
     <properties>
         <jersey.version>2.16</jersey.version>

src/main/java/com/csye6225/fall2018/courseservice/Model/Course.java

@@ -2,6 +2,12 @@
 
 import java.util.List;
 
+import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBAttribute;
+import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBHashKey;
+import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBIgnore;
+import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBTable;
+
+@DynamoDBTable(tableName="courseTable")
 public class Course {
 	private String courseID;
 	private String courseName;
@@ -19,7 +25,8 @@ public Course(String courseID, String courseName, String noOfCredits, String pro
 		this.noOfCredits = noOfCredits;
 		this.progID = progID;
 	}
-
+
+	@DynamoDBHashKey(attributeName="courseID")
 	public String getCourseID() {
 		return courseID;
 	}
@@ -28,6 +35,7 @@ public void setCourseID(String courseID) {
 		this.courseID = courseID;
 	}
 
+	@DynamoDBAttribute(attributeName="courseName")
 	public String getCourseName() {
 		return courseName;
 	}
@@ -36,6 +44,7 @@ public void setCourseName(String courseName) {
 		this.courseName = courseName;
 	}
 
+	@DynamoDBAttribute(attributeName="noOfCredits")
 	public String getNoOfCredits() {
 		return noOfCredits;
 	}
@@ -44,6 +53,7 @@ public void setNoOfCredits(String noOfCredits) {
 		this.noOfCredits = noOfCredits;
 	}
 
+	@DynamoDBAttribute(attributeName="program")
 	public List<String> getProgram() {
 		return program;
 	}
@@ -52,6 +62,7 @@ public void setProgram(List<String> program) {
 		this.program = program;
 	}
 
+	@DynamoDBAttribute(attributeName="progID")
 	public String getProgID() {
 		return progID;
 	}
@@ -60,14 +71,16 @@ public void setProgID(String progID) {
 		this.progID = progID;
 	}
 
+	@DynamoDBAttribute(attributeName="profID")
 	public String getProfID() {
 		return profID;
 	}
 
 	public void setProfID(String profID) {
 		this.profID = profID;
 	}
-
+
+	@DynamoDBIgnore
 	@Override
 	public String toString() {
 		return "CourseID" + getCourseID() + "CourseName" + getCourseName() + 

src/main/java/com/csye6225/fall2018/courseservice/Model/Department.java

@@ -3,6 +3,12 @@
 import java.util.ArrayList;
 import java.util.List;
 
+import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBAttribute;
+import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBHashKey;
+import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBIgnore;
+import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBTable;
+
+@DynamoDBTable(tableName="deptTable")
 public class Department {
 	private String deptID;
 	private String deptName;
@@ -20,36 +26,42 @@ public Department(String deptID, String deptName) {
 		this.programs = new ArrayList<String>();
 		this.professors = new ArrayList<String>();
 	}
-
+
+    @DynamoDBHashKey(attributeName="deptID")
 	public String getDeptID() {
 		return deptID;
 	}
 	public void setDeptID(String deprtID) {
 		this.deptID = deprtID;
 	}
+
+	@DynamoDBAttribute(attributeName="deptName")
 	public String getDeptName() {
 		return deptName;
 	}
 	public void setDeptName(String departName) {
 		this.deptName = departName;
 	}
 
+	@DynamoDBAttribute(attributeName="programs")
 	public List<String> getPrograms() {
 		return programs;
 	}
-
+	
 	public void setPrograms(List<String> programs) {
 		this.programs = programs;
 	}
-
+
+	@DynamoDBAttribute(attributeName="professors")
 	public List<String> getProfessors() {
 		return professors;
 	}
 
 	public void setProfessors(List<String> professors) {
 		this.professors = professors;
 	}
-
+
+	@DynamoDBIgnore
 	@Override
 	public String toString() {
 		StringBuilder builder = new StringBuilder();
@@ -60,5 +72,4 @@ public String toString() {
 		builder.append("\"}");
 		return builder.toString();
 	}
-
 }

src/main/java/com/csye6225/fall2018/courseservice/Model/DynamoDbConnector.java

@@ -0,0 +1,29 @@
+package com.csye6225.fall2018.courseservice.Model;
+
+import com.amazonaws.auth.DefaultAWSCredentialsProviderChain;
+import com.amazonaws.auth.profile.ProfileCredentialsProvider;
+import com.amazonaws.services.dynamodbv2.AmazonDynamoDB;
+import com.amazonaws.services.dynamodbv2.AmazonDynamoDBClientBuilder;
+
+public class DynamoDbConnector {
+	static AmazonDynamoDB dynamoDb ;
+
+	 public static void init() {
+		if (dynamoDb == null) {
+		// ProfileCredentialsProvider credentialsProvider = new ProfileCredentialsProvider();
+		// credentialsProvider.getCredentials();
+
+		dynamoDb = AmazonDynamoDBClientBuilder
+					.standard()
+					.withCredentials(DefaultAWSCredentialsProviderChain.getInstance())
+					.withRegion("us-west-2")
+					.build();		
+		System.out.println("#### Created DDB client");
+		} 
+
+	}
+
+	 public AmazonDynamoDB getClient() {
+		 return dynamoDb;
+	 }
+}

src/main/java/com/csye6225/fall2018/courseservice/Model/Professor.java

@@ -1,5 +1,12 @@
 package com.csye6225.fall2018.courseservice.Model;
+import javax.xml.bind.annotation.XmlRootElement;
 
+import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBAttribute;
+import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBHashKey;
+import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBIgnore;
+import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBTable;
+
+@DynamoDBTable(tableName="professorTable")
 public class Professor {
 	private String firstName;
 	private String lastName;
@@ -19,46 +26,52 @@ public Professor(String profID, String firstName,
 		this.joiningDate = joiningDate;
 	}
 
+	@DynamoDBAttribute(attributeName="firstName")
 	public String getFirstName() {
 		return firstName;
 	}
 	public void setFirstName(String firstName) {
 		this.firstName = firstName;
 	}
 
+	@DynamoDBAttribute(attributeName="lastName")
+	public String getLastName() {
+		return lastName;
+	}
+	public void setLastName(String lastName) {
+		this.lastName = lastName;
+	}
+
+	@DynamoDBAttribute(attributeName="deptID")  // was DBAttribute changed to DBHashKey	
 	public String getDeptID() {
 		return deptID;
 	}
 	public void setDeptID(String deptID) {
 		this.deptID = deptID;
 	}
-
+
+	@DynamoDBHashKey(attributeName="profID")
 	public String getProfID() {
 		return profID;
 	}
 	public void setProfID(String profID) {
 		this.profID = profID;
 	}
 
+	@DynamoDBAttribute(attributeName="joiningDate")
 	public String getJoiningDate() {
 		return joiningDate;
 	}
 	public void setJoiningDate(String joiningDate) {
 		this.joiningDate = joiningDate;
 	}
 
+	@DynamoDBIgnore
 	@Override
 	public String toString() { 
 		return "ProfId=" + getProfID() + ", firstName=" + getFirstName()
 				+ ", deptID=" + getDeptID() + ", joiningDate=" + getJoiningDate();
 	}
-
-	public String getLastName() {
-		return lastName;
-	}
-	public void setLastName(String lastName) {
-		this.lastName = lastName;
-	}
 }
 
 

src/main/java/com/csye6225/fall2018/courseservice/Model/Program.java

@@ -3,6 +3,12 @@
 import java.util.ArrayList;
 import java.util.List;
 
+import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBAttribute;
+import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBHashKey;
+import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBIgnore;
+import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBTable;
+
+@DynamoDBTable(tableName="programTable")
 public class Program {
 	private String programID;
 	private String programName;
@@ -20,6 +26,7 @@ public Program(String programID, String programName, String deptID) {
 		this.courses = new ArrayList<String>();
 	}
 
+	@DynamoDBHashKey(attributeName="progID")
 	public String getProgramID() {
 		return programID;
 	}
@@ -28,6 +35,7 @@ public void setProgramID(String programID) {
 		this.programID = programID;
 	}
 
+	@DynamoDBAttribute(attributeName="progName")
 	public String getProgramName() {
 		return programName;
 	}
@@ -36,22 +44,23 @@ public void setProgramName(String programName) {
 		this.programName = programName;
 	}
 
+	@DynamoDBAttribute(attributeName="courses")
 	public List<String> getCourses() {
 		return this.courses;
 	}
+	public void setCourses(List<String> courses) {
+		this.courses = courses;
+	}
 
+	@DynamoDBAttribute(attributeName="deptID")
 	public String getDeptID() {
 		return deptID;
 	}
-
 	public void setDeptID(String deptID) {
 		this.deptID = deptID;
 	}
 
-	public void setCourses(List<String> courses) {
-		this.courses = courses;
-	}
-
+	@DynamoDBIgnore
 	@Override
 	public String toString() {
 		return "ProgramID=" + getProgramID() + "ProgramName=" + getProgramName();