From 2284dc2f746ba2e59cb5af4de58af6734af378cb Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Mon, 9 Dec 2019 09:19:40 -0500
Subject: [PATCH 01/10] created the skeleton

---
 application.properties                        |  1 +
 .../controller/PollController.java            | 39 ++++++++++++++++
 .../domain/Option.java                        | 34 ++++++++++++++
 .../domain/Poll.java                          | 46 +++++++++++++++++++
 .../domain/Vote.java                          | 33 +++++++++++++
 .../repositories/OptionRepository.java        |  7 +++
 .../repositories/PollRepository.java          |  7 +++
 .../repositories/VoteRepository.java          |  7 +++
 8 files changed, 174 insertions(+)
 create mode 100644 application.properties
 create mode 100644 src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java
 create mode 100644 src/main/java/io/zipcoder/tc_spring_poll_application/domain/Option.java
 create mode 100644 src/main/java/io/zipcoder/tc_spring_poll_application/domain/Poll.java
 create mode 100644 src/main/java/io/zipcoder/tc_spring_poll_application/domain/Vote.java
 create mode 100644 src/main/java/io/zipcoder/tc_spring_poll_application/repositories/OptionRepository.java
 create mode 100644 src/main/java/io/zipcoder/tc_spring_poll_application/repositories/PollRepository.java
 create mode 100644 src/main/java/io/zipcoder/tc_spring_poll_application/repositories/VoteRepository.java

diff --git a/application.properties b/application.properties
new file mode 100644
index 0000000..bafddce
--- /dev/null
+++ b/application.properties
@@ -0,0 +1 @@
+server.port=8081
\ No newline at end of file
diff --git a/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java b/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java
new file mode 100644
index 0000000..2312bb0
--- /dev/null
+++ b/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java
@@ -0,0 +1,39 @@
+package io.zipcoder.tc_spring_poll_application.controller;
+
+import io.zipcoder.tc_spring_poll_application.domain.Poll;
+import io.zipcoder.tc_spring_poll_application.repositories.PollRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class PollController {
+
+    PollRepository pollRepository;
+
+    @Autowired
+    public PollController (PollRepository pollRepository){
+        this.pollRepository = pollRepository;
+    }
+
+
+
+    @RequestMapping(value="/polls", method= RequestMethod.GET)
+    public ResponseEntity<Iterable<Poll>> getAllPolls() {
+        Iterable<Poll> allPolls = pollRepository.findAll();
+        return new ResponseEntity<>(allPolls, HttpStatus.OK);
+    }
+
+
+    @RequestMapping(value="/polls", method=RequestMethod.POST)
+    public ResponseEntity<?> createPoll(@RequestBody Poll poll) {
+        poll = pollRepository.save(poll);
+        return new ResponseEntity<>(null, HttpStatus.CREATED);
+    }
+
+
+}
diff --git a/src/main/java/io/zipcoder/tc_spring_poll_application/domain/Option.java b/src/main/java/io/zipcoder/tc_spring_poll_application/domain/Option.java
new file mode 100644
index 0000000..3c84a4b
--- /dev/null
+++ b/src/main/java/io/zipcoder/tc_spring_poll_application/domain/Option.java
@@ -0,0 +1,34 @@
+package io.zipcoder.tc_spring_poll_application.domain;
+
+import javax.persistence.*;
+
+@Entity
+public class Option {
+
+    @Id
+    @GeneratedValue (strategy = GenerationType.AUTO)
+    @Column (name = "OPTION-ID")
+    private Long id;
+
+    @Column (name = "OPTION_VALUE")
+    private String value;
+
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getValue() {
+        return value;
+    }
+
+    public void setValue(String value) {
+        this.value = value;
+    }
+
+
+}
diff --git a/src/main/java/io/zipcoder/tc_spring_poll_application/domain/Poll.java b/src/main/java/io/zipcoder/tc_spring_poll_application/domain/Poll.java
new file mode 100644
index 0000000..491ac2e
--- /dev/null
+++ b/src/main/java/io/zipcoder/tc_spring_poll_application/domain/Poll.java
@@ -0,0 +1,46 @@
+package io.zipcoder.tc_spring_poll_application.domain;
+
+import javax.persistence.*;
+import java.util.Set;
+
+@Entity
+public class Poll {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    @Column(name = "POLL_ID")
+    private Long id;
+
+    @Column(name = "QUESTION")
+    private String question;
+
+    @OneToMany(cascade = CascadeType.ALL)
+    @JoinColumn(name = "POLL_ID")
+    @OrderBy
+    private Set<Option> options;
+
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getQuestion() {
+        return question;
+    }
+
+    public void setQuestion(String question) {
+        this.question = question;
+    }
+
+    public Set<Option> getOptions() {
+        return options;
+    }
+
+    public void setOptions(Set<Option> options) {
+        this.options = options;
+    }
+}
diff --git a/src/main/java/io/zipcoder/tc_spring_poll_application/domain/Vote.java b/src/main/java/io/zipcoder/tc_spring_poll_application/domain/Vote.java
new file mode 100644
index 0000000..e4ed697
--- /dev/null
+++ b/src/main/java/io/zipcoder/tc_spring_poll_application/domain/Vote.java
@@ -0,0 +1,33 @@
+package io.zipcoder.tc_spring_poll_application.domain;
+
+import javax.persistence.*;
+
+@Entity
+public class Vote {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    @Column(name = "VOTE_ID")
+    private Long id;
+
+    @ManyToOne
+    @JoinColumn(name = "OPTION_ID")
+    Option option;
+
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Option getOption() {
+        return option;
+    }
+
+    public void setOption(Option option) {
+        this.option = option;
+    }
+}
diff --git a/src/main/java/io/zipcoder/tc_spring_poll_application/repositories/OptionRepository.java b/src/main/java/io/zipcoder/tc_spring_poll_application/repositories/OptionRepository.java
new file mode 100644
index 0000000..19852c9
--- /dev/null
+++ b/src/main/java/io/zipcoder/tc_spring_poll_application/repositories/OptionRepository.java
@@ -0,0 +1,7 @@
+package io.zipcoder.tc_spring_poll_application.repositories;
+
+import io.zipcoder.tc_spring_poll_application.domain.Option;
+import org.springframework.data.repository.CrudRepository;
+
+public interface OptionRepository extends CrudRepository<Option,Long> {
+}
diff --git a/src/main/java/io/zipcoder/tc_spring_poll_application/repositories/PollRepository.java b/src/main/java/io/zipcoder/tc_spring_poll_application/repositories/PollRepository.java
new file mode 100644
index 0000000..8b7fd98
--- /dev/null
+++ b/src/main/java/io/zipcoder/tc_spring_poll_application/repositories/PollRepository.java
@@ -0,0 +1,7 @@
+package io.zipcoder.tc_spring_poll_application.repositories;
+
+import io.zipcoder.tc_spring_poll_application.domain.Poll;
+import org.springframework.data.repository.CrudRepository;
+
+public interface PollRepository extends CrudRepository<Poll,Long> {
+}
diff --git a/src/main/java/io/zipcoder/tc_spring_poll_application/repositories/VoteRepository.java b/src/main/java/io/zipcoder/tc_spring_poll_application/repositories/VoteRepository.java
new file mode 100644
index 0000000..7c7134a
--- /dev/null
+++ b/src/main/java/io/zipcoder/tc_spring_poll_application/repositories/VoteRepository.java
@@ -0,0 +1,7 @@
+package io.zipcoder.tc_spring_poll_application.repositories;
+
+import io.zipcoder.tc_spring_poll_application.domain.Vote;
+import org.springframework.data.repository.CrudRepository;
+
+public interface VoteRepository extends CrudRepository<Vote,Long> {
+}

From d59c2260a56fa83c9abf5f1d0cdfeb8e1f01174e Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Mon, 9 Dec 2019 09:26:39 -0500
Subject: [PATCH 02/10] Add post

---
 .../controller/PollController.java            | 25 ++++++++++++++++---
 1 file changed, 21 insertions(+), 4 deletions(-)

diff --git a/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java b/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java
index 2312bb0..b4e8562 100644
--- a/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java
+++ b/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java
@@ -3,12 +3,13 @@
 import io.zipcoder.tc_spring_poll_application.domain.Poll;
 import io.zipcoder.tc_spring_poll_application.repositories.PollRepository;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpHeaders;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.RequestBody;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RequestMethod;
-import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.servlet.support.ServletUriComponentsBuilder;
+
+import java.net.URI;
 
 @RestController
 public class PollController {
@@ -31,9 +32,25 @@ public ResponseEntity<Iterable<Poll>> getAllPolls() {
 
     @RequestMapping(value="/polls", method=RequestMethod.POST)
     public ResponseEntity<?> createPoll(@RequestBody Poll poll) {
+
+        URI newPollUri = ServletUriComponentsBuilder
+                .fromCurrentRequest()
+                .path("/{id}")
+                .buildAndExpand(poll.getId())
+                .toUri();
+
+        HttpHeaders httpHeaders = new HttpHeaders();
+        httpHeaders.setLocation(newPollUri);
+
         poll = pollRepository.save(poll);
         return new ResponseEntity<>(null, HttpStatus.CREATED);
     }
 
+    @RequestMapping(value="/polls/{pollId}", method=RequestMethod.GET)
+    public ResponseEntity<?> getPoll(@PathVariable Long pollId) {
+        Poll p = pollRepository.findOne(pollId);
+        return new ResponseEntity<> (p, HttpStatus.OK);
+    }
+
 
 }

From abe6970297c10cc451127f2bb7216060604b1f1d Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Mon, 9 Dec 2019 09:31:36 -0500
Subject: [PATCH 03/10] Add update

---
 .../controller/PollController.java                   | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java b/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java
index b4e8562..937f00c 100644
--- a/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java
+++ b/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java
@@ -31,7 +31,7 @@ public ResponseEntity<Iterable<Poll>> getAllPolls() {
 
 
     @RequestMapping(value="/polls", method=RequestMethod.POST)
-    public ResponseEntity<?> createPoll(@RequestBody Poll poll) {
+    public ResponseEntity<Poll> createPoll(@RequestBody Poll poll) {
 
         URI newPollUri = ServletUriComponentsBuilder
                 .fromCurrentRequest()
@@ -43,7 +43,7 @@ public ResponseEntity<?> createPoll(@RequestBody Poll poll) {
         httpHeaders.setLocation(newPollUri);
 
         poll = pollRepository.save(poll);
-        return new ResponseEntity<>(null, HttpStatus.CREATED);
+        return new ResponseEntity<Poll>(httpHeaders, HttpStatus.CREATED);
     }
 
     @RequestMapping(value="/polls/{pollId}", method=RequestMethod.GET)
@@ -52,5 +52,13 @@ public ResponseEntity<?> getPoll(@PathVariable Long pollId) {
         return new ResponseEntity<> (p, HttpStatus.OK);
     }
 
+    @RequestMapping(value="/polls/{pollId}", method=RequestMethod.PUT)
+    public ResponseEntity<?> updatePoll(@RequestBody Poll poll, @PathVariable Long pollId) {
+        // Save the entity
+        Poll p = pollRepository.save(poll);
+        return new ResponseEntity<>(HttpStatus.OK);
+    }
+
+
 
 }

From dfa4d22c0952bcab9c14eb52a5d195b3279f46b3 Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Mon, 9 Dec 2019 09:32:08 -0500
Subject: [PATCH 04/10] Add delete

---
 .../controller/PollController.java                          | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java b/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java
index 937f00c..aa64c76 100644
--- a/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java
+++ b/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java
@@ -60,5 +60,11 @@ public ResponseEntity<?> updatePoll(@RequestBody Poll poll, @PathVariable Long p
     }
 
 
+    @RequestMapping(value="/polls/{pollId}", method=RequestMethod.DELETE)
+    public ResponseEntity<?> deletePoll(@PathVariable Long pollId) {
+        pollRepository.delete(pollId);
+        return new ResponseEntity<>(HttpStatus.OK);
+    }
+
 
 }

From cf7f6f951c5da4945c1d3036c6a947068eee2e53 Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Mon, 9 Dec 2019 10:30:24 -0500
Subject: [PATCH 05/10] create poll

---
 .../controller/PollController.java                         | 7 ++++---
 .../zipcoder/tc_spring_poll_application/domain/Option.java | 2 +-
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java b/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java
index aa64c76..92ca2eb 100644
--- a/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java
+++ b/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java
@@ -31,7 +31,8 @@ public ResponseEntity<Iterable<Poll>> getAllPolls() {
 
 
     @RequestMapping(value="/polls", method=RequestMethod.POST)
-    public ResponseEntity<Poll> createPoll(@RequestBody Poll poll) {
+    public ResponseEntity<?> createPoll(@RequestBody Poll poll) {
+        poll = pollRepository.save(poll);
 
         URI newPollUri = ServletUriComponentsBuilder
                 .fromCurrentRequest()
@@ -42,8 +43,8 @@ public ResponseEntity<Poll> createPoll(@RequestBody Poll poll) {
         HttpHeaders httpHeaders = new HttpHeaders();
         httpHeaders.setLocation(newPollUri);
 
-        poll = pollRepository.save(poll);
-        return new ResponseEntity<Poll>(httpHeaders, HttpStatus.CREATED);
+
+        return new ResponseEntity<>(httpHeaders, HttpStatus.CREATED);
     }
 
     @RequestMapping(value="/polls/{pollId}", method=RequestMethod.GET)
diff --git a/src/main/java/io/zipcoder/tc_spring_poll_application/domain/Option.java b/src/main/java/io/zipcoder/tc_spring_poll_application/domain/Option.java
index 3c84a4b..fd37f99 100644
--- a/src/main/java/io/zipcoder/tc_spring_poll_application/domain/Option.java
+++ b/src/main/java/io/zipcoder/tc_spring_poll_application/domain/Option.java
@@ -7,7 +7,7 @@ public class Option {
 
     @Id
     @GeneratedValue (strategy = GenerationType.AUTO)
-    @Column (name = "OPTION-ID")
+    @Column (name = "OPTION_ID")
     private Long id;
 
     @Column (name = "OPTION_VALUE")

From 7b612055312415ea7a4aeffae7726864e9ab2f9d Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Mon, 9 Dec 2019 11:16:12 -0500
Subject: [PATCH 06/10] added dtos

---
 .../controller/ComputeResultController.java   | 32 +++++++++++++
 .../controller/VoteController.java            | 45 +++++++++++++++++++
 .../domain/Option.java                        |  7 ++-
 .../domain/Poll.java                          |  6 ++-
 .../domain/Vote.java                          |  1 -
 .../dtos/OptionCount.java                     | 23 ++++++++++
 .../dtos/VoteResult.java                      | 24 ++++++++++
 .../repositories/VoteRepository.java          |  6 +++
 8 files changed, 138 insertions(+), 6 deletions(-)
 create mode 100644 src/main/java/io/zipcoder/tc_spring_poll_application/controller/ComputeResultController.java
 create mode 100644 src/main/java/io/zipcoder/tc_spring_poll_application/controller/VoteController.java
 create mode 100644 src/main/java/io/zipcoder/tc_spring_poll_application/dtos/OptionCount.java
 create mode 100644 src/main/java/io/zipcoder/tc_spring_poll_application/dtos/VoteResult.java

diff --git a/src/main/java/io/zipcoder/tc_spring_poll_application/controller/ComputeResultController.java b/src/main/java/io/zipcoder/tc_spring_poll_application/controller/ComputeResultController.java
new file mode 100644
index 0000000..b6ba0c9
--- /dev/null
+++ b/src/main/java/io/zipcoder/tc_spring_poll_application/controller/ComputeResultController.java
@@ -0,0 +1,32 @@
+package io.zipcoder.tc_spring_poll_application.controller;
+
+import io.zipcoder.tc_spring_poll_application.domain.Vote;
+import io.zipcoder.tc_spring_poll_application.dtos.VoteResult;
+import io.zipcoder.tc_spring_poll_application.repositories.VoteRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class ComputeResultController {
+
+    private VoteRepository voteRepository;
+
+    @Autowired
+    public ComputeResultController(VoteRepository voteRepository) {
+        this.voteRepository = voteRepository;
+    }
+
+    @RequestMapping(value = "/computeresult", method = RequestMethod.GET)
+    public ResponseEntity<?> computeResult(@RequestParam Long pollId) {
+        VoteResult voteResult = new VoteResult();
+        Iterable<Vote> allVotes = voteRepository.findVotesByPoll(pollId);
+
+        //TODO: Implement algorithm to count votes
+        return new ResponseEntity<VoteResult>(voteResult, HttpStatus.OK);
+    }
+}
diff --git a/src/main/java/io/zipcoder/tc_spring_poll_application/controller/VoteController.java b/src/main/java/io/zipcoder/tc_spring_poll_application/controller/VoteController.java
new file mode 100644
index 0000000..4ba3020
--- /dev/null
+++ b/src/main/java/io/zipcoder/tc_spring_poll_application/controller/VoteController.java
@@ -0,0 +1,45 @@
+package io.zipcoder.tc_spring_poll_application.controller;
+
+import io.zipcoder.tc_spring_poll_application.domain.Vote;
+import io.zipcoder.tc_spring_poll_application.repositories.VoteRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.servlet.support.ServletUriComponentsBuilder;
+
+import javax.validation.Valid;
+
+@RestController
+public class VoteController {
+
+    private VoteRepository voteRepository;
+
+    @Autowired
+    public VoteController (VoteRepository voteRepository){
+        this.voteRepository = voteRepository;
+    }
+
+    @RequestMapping(value = "/polls/{pollId}/votes", method = RequestMethod.POST)
+    public ResponseEntity<?> createVote(@PathVariable Long pollId, @Valid @RequestBody Vote vote) {
+        vote = voteRepository.save(vote);
+        HttpHeaders responseHeaders = new HttpHeaders();
+        responseHeaders.setLocation(ServletUriComponentsBuilder.
+                fromCurrentRequest().path("/{id}").buildAndExpand(vote.getId()).toUri());
+        return new ResponseEntity<>(null, responseHeaders, HttpStatus.CREATED);
+    }
+
+
+    @RequestMapping(value="/polls/votes", method=RequestMethod.GET)
+    public Iterable<Vote> getAllVotes() {
+        return voteRepository.findAll();
+    }
+
+    @RequestMapping(value="/polls/{pollId}/votes", method=RequestMethod.GET)
+    public Iterable<Vote> getVote(@PathVariable Long pollId) {
+        return voteRepository.findVotesByPoll(pollId);
+    }
+
+
+}
diff --git a/src/main/java/io/zipcoder/tc_spring_poll_application/domain/Option.java b/src/main/java/io/zipcoder/tc_spring_poll_application/domain/Option.java
index fd37f99..9da5600 100644
--- a/src/main/java/io/zipcoder/tc_spring_poll_application/domain/Option.java
+++ b/src/main/java/io/zipcoder/tc_spring_poll_application/domain/Option.java
@@ -6,14 +6,13 @@
 public class Option {
 
     @Id
-    @GeneratedValue (strategy = GenerationType.AUTO)
-    @Column (name = "OPTION_ID")
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    @Column(name = "OPTION_ID")
     private Long id;
 
-    @Column (name = "OPTION_VALUE")
+    @Column(name = "OPTION_VALUE")
     private String value;
 
-
     public Long getId() {
         return id;
     }
diff --git a/src/main/java/io/zipcoder/tc_spring_poll_application/domain/Poll.java b/src/main/java/io/zipcoder/tc_spring_poll_application/domain/Poll.java
index 491ac2e..69b5426 100644
--- a/src/main/java/io/zipcoder/tc_spring_poll_application/domain/Poll.java
+++ b/src/main/java/io/zipcoder/tc_spring_poll_application/domain/Poll.java
@@ -1,6 +1,9 @@
 package io.zipcoder.tc_spring_poll_application.domain;
 
+import org.hibernate.validator.constraints.NotEmpty;
+
 import javax.persistence.*;
+import javax.validation.constraints.Size;
 import java.util.Set;
 
 @Entity
@@ -12,14 +15,15 @@ public class Poll {
     private Long id;
 
     @Column(name = "QUESTION")
+    @NotEmpty
     private String question;
 
     @OneToMany(cascade = CascadeType.ALL)
     @JoinColumn(name = "POLL_ID")
     @OrderBy
+    @Size(min=2, max=6)
     private Set<Option> options;
 
-
     public Long getId() {
         return id;
     }
diff --git a/src/main/java/io/zipcoder/tc_spring_poll_application/domain/Vote.java b/src/main/java/io/zipcoder/tc_spring_poll_application/domain/Vote.java
index e4ed697..1923824 100644
--- a/src/main/java/io/zipcoder/tc_spring_poll_application/domain/Vote.java
+++ b/src/main/java/io/zipcoder/tc_spring_poll_application/domain/Vote.java
@@ -14,7 +14,6 @@ public class Vote {
     @JoinColumn(name = "OPTION_ID")
     Option option;
 
-
     public Long getId() {
         return id;
     }
diff --git a/src/main/java/io/zipcoder/tc_spring_poll_application/dtos/OptionCount.java b/src/main/java/io/zipcoder/tc_spring_poll_application/dtos/OptionCount.java
new file mode 100644
index 0000000..30f5a6d
--- /dev/null
+++ b/src/main/java/io/zipcoder/tc_spring_poll_application/dtos/OptionCount.java
@@ -0,0 +1,23 @@
+package io.zipcoder.tc_spring_poll_application.dtos;
+
+
+public class OptionCount {
+    private Long optionId;
+    private int count;
+
+    public Long getOptionId() {
+        return optionId;
+    }
+
+    public void setOptionId(Long optionId) {
+        this.optionId = optionId;
+    }
+
+    public int getCount() {
+        return count;
+    }
+
+    public void setCount(int count) {
+        this.count = count;
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/io/zipcoder/tc_spring_poll_application/dtos/VoteResult.java b/src/main/java/io/zipcoder/tc_spring_poll_application/dtos/VoteResult.java
new file mode 100644
index 0000000..7edaa69
--- /dev/null
+++ b/src/main/java/io/zipcoder/tc_spring_poll_application/dtos/VoteResult.java
@@ -0,0 +1,24 @@
+package io.zipcoder.tc_spring_poll_application.dtos;
+
+import java.util.Collection;
+
+public class VoteResult {
+    private int totalVotes;
+    private Collection<OptionCount> results;
+
+    public int getTotalVotes() {
+        return totalVotes;
+    }
+
+    public void setTotalVotes(int totalVotes) {
+        this.totalVotes = totalVotes;
+    }
+
+    public Collection<OptionCount> getResults() {
+        return results;
+    }
+
+    public void setResults(Collection<OptionCount> results) {
+        this.results = results;
+    }
+}
diff --git a/src/main/java/io/zipcoder/tc_spring_poll_application/repositories/VoteRepository.java b/src/main/java/io/zipcoder/tc_spring_poll_application/repositories/VoteRepository.java
index 7c7134a..b73f0fb 100644
--- a/src/main/java/io/zipcoder/tc_spring_poll_application/repositories/VoteRepository.java
+++ b/src/main/java/io/zipcoder/tc_spring_poll_application/repositories/VoteRepository.java
@@ -1,7 +1,13 @@
 package io.zipcoder.tc_spring_poll_application.repositories;
 
 import io.zipcoder.tc_spring_poll_application.domain.Vote;
+import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.CrudRepository;
 
 public interface VoteRepository extends CrudRepository<Vote,Long> {
+    @Query(value = "SELECT v.* " +
+            "FROM Option o, Vote v " +
+            "WHERE o.POLL_ID = ?1 " +
+            "AND v.OPTION_ID = o.OPTION_ID", nativeQuery = true)
+    public Iterable<Vote> findVotesByPoll(Long pollId);
 }

From c47780b6ab498969c79bf4b09e0ab2b8d15e1a6b Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Mon, 9 Dec 2019 11:19:00 -0500
Subject: [PATCH 07/10] Add runtime exception class

---
 .../exception/ResourceNotFoundException.java  | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 src/main/java/io/zipcoder/tc_spring_poll_application/exception/ResourceNotFoundException.java

diff --git a/src/main/java/io/zipcoder/tc_spring_poll_application/exception/ResourceNotFoundException.java b/src/main/java/io/zipcoder/tc_spring_poll_application/exception/ResourceNotFoundException.java
new file mode 100644
index 0000000..d7ddb5c
--- /dev/null
+++ b/src/main/java/io/zipcoder/tc_spring_poll_application/exception/ResourceNotFoundException.java
@@ -0,0 +1,19 @@
+package io.zipcoder.tc_spring_poll_application.exception;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.ResponseStatus;
+
+@ResponseStatus(HttpStatus.NOT_FOUND)
+public class ResourceNotFoundException extends RuntimeException {
+
+    public ResourceNotFoundException() {
+    }
+
+    public ResourceNotFoundException(String message) {
+        super(message);
+    }
+
+    public ResourceNotFoundException(String message, Throwable cause) {
+        super(message, cause);
+    }
+}

From 4b458c0e59ed8b87ffdd86cd93c5ff1690d26f57 Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Mon, 9 Dec 2019 11:52:15 -0500
Subject: [PATCH 08/10] Add custom error handling

---
 pom.xml                                       | 12 +++++
 .../controller/PollController.java            | 14 ++++++
 .../dtos/error/ErrorDetail.java               | 50 +++++++++++++++++++
 .../dtos/error/RestExceptionHandler.java      | 30 +++++++++++
 4 files changed, 106 insertions(+)
 create mode 100644 src/main/java/io/zipcoder/tc_spring_poll_application/dtos/error/ErrorDetail.java
 create mode 100644 src/main/java/io/zipcoder/tc_spring_poll_application/dtos/error/RestExceptionHandler.java

diff --git a/pom.xml b/pom.xml
index ed84c9b..55f5e1b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -7,6 +7,18 @@
     <groupId>io.zipcoder</groupId>
     <artifactId>spring-demo</artifactId>
     <version>1.0-SNAPSHOT</version>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>8</source>
+                    <target>8</target>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
diff --git a/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java b/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java
index 92ca2eb..658267c 100644
--- a/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java
+++ b/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java
@@ -1,6 +1,7 @@
 package io.zipcoder.tc_spring_poll_application.controller;
 
 import io.zipcoder.tc_spring_poll_application.domain.Poll;
+import io.zipcoder.tc_spring_poll_application.exception.ResourceNotFoundException;
 import io.zipcoder.tc_spring_poll_application.repositories.PollRepository;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.HttpHeaders;
@@ -10,6 +11,7 @@
 import org.springframework.web.servlet.support.ServletUriComponentsBuilder;
 
 import java.net.URI;
+import java.util.Optional;
 
 @RestController
 public class PollController {
@@ -49,6 +51,7 @@ public ResponseEntity<?> createPoll(@RequestBody Poll poll) {
 
     @RequestMapping(value="/polls/{pollId}", method=RequestMethod.GET)
     public ResponseEntity<?> getPoll(@PathVariable Long pollId) {
+        verifyPoll(pollId);
         Poll p = pollRepository.findOne(pollId);
         return new ResponseEntity<> (p, HttpStatus.OK);
     }
@@ -56,6 +59,7 @@ public ResponseEntity<?> getPoll(@PathVariable Long pollId) {
     @RequestMapping(value="/polls/{pollId}", method=RequestMethod.PUT)
     public ResponseEntity<?> updatePoll(@RequestBody Poll poll, @PathVariable Long pollId) {
         // Save the entity
+        verifyPoll(pollId);
         Poll p = pollRepository.save(poll);
         return new ResponseEntity<>(HttpStatus.OK);
     }
@@ -63,9 +67,19 @@ public ResponseEntity<?> updatePoll(@RequestBody Poll poll, @PathVariable Long p
 
     @RequestMapping(value="/polls/{pollId}", method=RequestMethod.DELETE)
     public ResponseEntity<?> deletePoll(@PathVariable Long pollId) {
+        verifyPoll(pollId);
         pollRepository.delete(pollId);
         return new ResponseEntity<>(HttpStatus.OK);
     }
 
+    private void verifyPoll (Long pollId){
+
+        if(pollRepository.exists(pollId)) {
+            // all good
+        } else {
+            throw  new ResourceNotFoundException("Poll not found");
+        }
+    }
+
 
 }
diff --git a/src/main/java/io/zipcoder/tc_spring_poll_application/dtos/error/ErrorDetail.java b/src/main/java/io/zipcoder/tc_spring_poll_application/dtos/error/ErrorDetail.java
new file mode 100644
index 0000000..2a1027a
--- /dev/null
+++ b/src/main/java/io/zipcoder/tc_spring_poll_application/dtos/error/ErrorDetail.java
@@ -0,0 +1,50 @@
+package io.zipcoder.tc_spring_poll_application.dtos.error;
+
+public class ErrorDetail {
+
+    String title;
+    int status;
+    String detail;
+    long timeStamp;
+    String developerMessage;
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public int getStatus() {
+        return status;
+    }
+
+    public void setStatus(int status) {
+        this.status = status;
+    }
+
+    public String getDetail() {
+        return detail;
+    }
+
+    public void setDetail(String detail) {
+        this.detail = detail;
+    }
+
+    public long getTimeStamp() {
+        return timeStamp;
+    }
+
+    public void setTimeStamp(long timeStamp) {
+        this.timeStamp = timeStamp;
+    }
+
+    public String getDeveloperMessage() {
+        return developerMessage;
+    }
+
+    public void setDeveloperMessage(String developerMessage) {
+        this.developerMessage = developerMessage;
+    }
+}
diff --git a/src/main/java/io/zipcoder/tc_spring_poll_application/dtos/error/RestExceptionHandler.java b/src/main/java/io/zipcoder/tc_spring_poll_application/dtos/error/RestExceptionHandler.java
new file mode 100644
index 0000000..a505a33
--- /dev/null
+++ b/src/main/java/io/zipcoder/tc_spring_poll_application/dtos/error/RestExceptionHandler.java
@@ -0,0 +1,30 @@
+package io.zipcoder.tc_spring_poll_application.dtos.error;
+
+import io.zipcoder.tc_spring_poll_application.exception.ResourceNotFoundException;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+
+import javax.servlet.http.HttpServletRequest;
+import java.util.Arrays;
+import java.util.Date;
+
+@ControllerAdvice
+public class RestExceptionHandler {
+
+    @ExceptionHandler(ResourceNotFoundException.class)
+    public ResponseEntity<?> handleResourceNotFoundException(ResourceNotFoundException rnfe, HttpServletRequest request) {
+
+        ErrorDetail errorDetail = new ErrorDetail();
+        errorDetail.setTimeStamp(new Date().getTime());
+        errorDetail.setDeveloperMessage(rnfe.getMessage());
+        errorDetail.setDetail(Arrays.toString(rnfe.getStackTrace()));
+        errorDetail.setStatus(HttpStatus.NOT_FOUND.value());
+
+        return new ResponseEntity<>(errorDetail, HttpStatus.NOT_FOUND);
+    }
+
+
+}

From a775d66e921cc44873b451052d4d53443d14ae0a Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Mon, 9 Dec 2019 12:20:20 -0500
Subject: [PATCH 09/10] add more error details and sql

---
 .../controller/PollController.java            |  5 +--
 .../dtos/error/ErrorDetail.java               | 10 ++++++
 .../dtos/error/RestExceptionHandler.java      | 32 ++++++++++++++++++-
 .../dtos/error/ValidationError.java           | 23 +++++++++++++
 src/main/resources/import.sql                 | 22 +++++++++++++
 src/main/resources/messages.properties        |  2 ++
 6 files changed, 91 insertions(+), 3 deletions(-)
 create mode 100644 src/main/java/io/zipcoder/tc_spring_poll_application/dtos/error/ValidationError.java
 create mode 100644 src/main/resources/import.sql
 create mode 100644 src/main/resources/messages.properties

diff --git a/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java b/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java
index 658267c..33bbf1f 100644
--- a/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java
+++ b/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java
@@ -10,6 +10,7 @@
 import org.springframework.web.bind.annotation.*;
 import org.springframework.web.servlet.support.ServletUriComponentsBuilder;
 
+import javax.validation.Valid;
 import java.net.URI;
 import java.util.Optional;
 
@@ -33,7 +34,7 @@ public ResponseEntity<Iterable<Poll>> getAllPolls() {
 
 
     @RequestMapping(value="/polls", method=RequestMethod.POST)
-    public ResponseEntity<?> createPoll(@RequestBody Poll poll) {
+    public ResponseEntity<?> createPoll(@Valid @RequestBody Poll poll) {
         poll = pollRepository.save(poll);
 
         URI newPollUri = ServletUriComponentsBuilder
@@ -57,7 +58,7 @@ public ResponseEntity<?> getPoll(@PathVariable Long pollId) {
     }
 
     @RequestMapping(value="/polls/{pollId}", method=RequestMethod.PUT)
-    public ResponseEntity<?> updatePoll(@RequestBody Poll poll, @PathVariable Long pollId) {
+    public ResponseEntity<?> updatePoll(@Valid @RequestBody Poll poll, @PathVariable Long pollId) {
         // Save the entity
         verifyPoll(pollId);
         Poll p = pollRepository.save(poll);
diff --git a/src/main/java/io/zipcoder/tc_spring_poll_application/dtos/error/ErrorDetail.java b/src/main/java/io/zipcoder/tc_spring_poll_application/dtos/error/ErrorDetail.java
index 2a1027a..5aef1d9 100644
--- a/src/main/java/io/zipcoder/tc_spring_poll_application/dtos/error/ErrorDetail.java
+++ b/src/main/java/io/zipcoder/tc_spring_poll_application/dtos/error/ErrorDetail.java
@@ -1,5 +1,9 @@
 package io.zipcoder.tc_spring_poll_application.dtos.error;
 
+import java.net.CookieHandler;
+import java.util.List;
+import java.util.Map;
+
 public class ErrorDetail {
 
     String title;
@@ -8,6 +12,8 @@ public class ErrorDetail {
     long timeStamp;
     String developerMessage;
 
+    Map<String, List<ValidationError>> errors;
+
     public String getTitle() {
         return title;
     }
@@ -47,4 +53,8 @@ public String getDeveloperMessage() {
     public void setDeveloperMessage(String developerMessage) {
         this.developerMessage = developerMessage;
     }
+
+    public Map<String, List<ValidationError>> getErrors() {
+        return errors;
+    }
 }
diff --git a/src/main/java/io/zipcoder/tc_spring_poll_application/dtos/error/RestExceptionHandler.java b/src/main/java/io/zipcoder/tc_spring_poll_application/dtos/error/RestExceptionHandler.java
index a505a33..b6e00ef 100644
--- a/src/main/java/io/zipcoder/tc_spring_poll_application/dtos/error/RestExceptionHandler.java
+++ b/src/main/java/io/zipcoder/tc_spring_poll_application/dtos/error/RestExceptionHandler.java
@@ -1,19 +1,28 @@
 package io.zipcoder.tc_spring_poll_application.dtos.error;
 
+import com.sun.deploy.net.DownloadException;
 import io.zipcoder.tc_spring_poll_application.exception.ResourceNotFoundException;
-import org.springframework.http.HttpHeaders;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.MessageSource;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
+import org.springframework.validation.FieldError;
+import org.springframework.web.bind.MethodArgumentNotValidException;
 import org.springframework.web.bind.annotation.ControllerAdvice;
 import org.springframework.web.bind.annotation.ExceptionHandler;
 
 import javax.servlet.http.HttpServletRequest;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Date;
+import java.util.List;
 
 @ControllerAdvice
 public class RestExceptionHandler {
 
+    @Autowired
+    private MessageSource messageSource;
+
     @ExceptionHandler(ResourceNotFoundException.class)
     public ResponseEntity<?> handleResourceNotFoundException(ResourceNotFoundException rnfe, HttpServletRequest request) {
 
@@ -26,5 +35,26 @@ public ResponseEntity<?> handleResourceNotFoundException(ResourceNotFoundExcepti
         return new ResponseEntity<>(errorDetail, HttpStatus.NOT_FOUND);
     }
 
+    @ExceptionHandler(MethodArgumentNotValidException.class)
+    public ResponseEntity<?> handleValidationError(  MethodArgumentNotValidException manve, HttpServletRequest request){
+        ErrorDetail errorDetail = new ErrorDetail();
+
+        List<FieldError> fieldErrors =  manve.getBindingResult().getFieldErrors();
+        for(FieldError fe : fieldErrors) {
+
+            List<ValidationError> validationErrorList = errorDetail.getErrors().get(fe.getField());
 
+            if(validationErrorList == null) {
+                validationErrorList = new ArrayList<>();
+                errorDetail.getErrors().put(fe.getField(), validationErrorList);
+            }
+
+            ValidationError validationError = new ValidationError();
+            validationError.setCode(fe.getCode());
+            validationError.setMessage(messageSource.getMessage(fe, null));
+            validationErrorList.add(validationError);
+        }
+
+        return new ResponseEntity<>(errorDetail, HttpStatus.BAD_REQUEST);
+    }
 }
diff --git a/src/main/java/io/zipcoder/tc_spring_poll_application/dtos/error/ValidationError.java b/src/main/java/io/zipcoder/tc_spring_poll_application/dtos/error/ValidationError.java
new file mode 100644
index 0000000..77e8767
--- /dev/null
+++ b/src/main/java/io/zipcoder/tc_spring_poll_application/dtos/error/ValidationError.java
@@ -0,0 +1,23 @@
+package io.zipcoder.tc_spring_poll_application.dtos.error;
+
+public class ValidationError {
+
+    String code;
+    String message;
+
+    public String getMessage() {
+        return message;
+    }
+
+    public void setMessage(String message) {
+        this.message = message;
+    }
+
+    public String getCode() {
+        return code;
+    }
+
+    public void setCode(String code) {
+        this.code = code;
+    }
+}
diff --git a/src/main/resources/import.sql b/src/main/resources/import.sql
new file mode 100644
index 0000000..70cb338
--- /dev/null
+++ b/src/main/resources/import.sql
@@ -0,0 +1,22 @@
+-->  poll creation --
+
+insert into poll (poll_id, question) values (1, 'What is your favorite color?');
+insert into poll (poll_id, question) values (2, 'What is your favorite car?');
+insert into poll (poll_id, question) values (3, 'What is your favorite city?');
+
+--> option creation --
+
+insert into option (option_id, option_value, poll_id) values (1, 'Red', 1);
+insert into option (option_id, option_value, poll_id) values (2, 'Blue', 1);
+insert into option (option_id, option_value, poll_id) values (3, 'Green', 1);
+insert into option (option_id, option_value, poll_id) values (4, 'Yellow', 1);
+
+insert into option (option_id, option_value, poll_id) values (5, 'BMW', 2);
+insert into option (option_id, option_value, poll_id) values (6, 'Audi', 2);
+insert into option (option_id, option_value, poll_id) values (7, 'Mercedes', 2);
+insert into option (option_id, option_value, poll_id) values (8, 'Masserati', 2);
+
+insert into option (option_id, option_value, poll_id) values (9, 'Philly', 3);
+insert into option (option_id, option_value, poll_id) values (10, 'Boston', 3);
+insert into option (option_id, option_value, poll_id) values (11, 'New York', 3);
+insert into option (option_id, option_value, poll_id) values (12, 'Los Angeles', 3);
\ No newline at end of file
diff --git a/src/main/resources/messages.properties b/src/main/resources/messages.properties
new file mode 100644
index 0000000..3f51f36
--- /dev/null
+++ b/src/main/resources/messages.properties
@@ -0,0 +1,2 @@
+NotEmpty.poll.question=Question is a required field
+Size.poll.options=Options must be greater than {2} and less than {1}
\ No newline at end of file

From 7a793c421459227eefa5bb419bb3743e3031930b Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Mon, 9 Dec 2019 13:32:20 -0500
Subject: [PATCH 10/10] Add pageable

---
 .../controller/PollController.java            | 19 ++++++++++++-------
 .../repositories/PollRepository.java          |  6 +++++-
 2 files changed, 17 insertions(+), 8 deletions(-)

diff --git a/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java b/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java
index 33bbf1f..aec2da0 100644
--- a/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java
+++ b/src/main/java/io/zipcoder/tc_spring_poll_application/controller/PollController.java
@@ -4,6 +4,8 @@
 import io.zipcoder.tc_spring_poll_application.exception.ResourceNotFoundException;
 import io.zipcoder.tc_spring_poll_application.repositories.PollRepository;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
@@ -12,7 +14,6 @@
 
 import javax.validation.Valid;
 import java.net.URI;
-import java.util.Optional;
 
 @RestController
 public class PollController {
@@ -24,14 +25,18 @@ public PollController (PollRepository pollRepository){
         this.pollRepository = pollRepository;
     }
 
-
-
-    @RequestMapping(value="/polls", method= RequestMethod.GET)
-    public ResponseEntity<Iterable<Poll>> getAllPolls() {
-        Iterable<Poll> allPolls = pollRepository.findAll();
-        return new ResponseEntity<>(allPolls, HttpStatus.OK);
+    @GetMapping("/polls")
+    public ResponseEntity<Page<Poll>> getAllPolls (Pageable pageable){
+        Page<Poll> allPolls = pollRepository.findAll(pageable);
+        return new ResponseEntity<Page<Poll>>(allPolls,HttpStatus.OK);
     }
 
+//    @RequestMapping(value="/polls", method= RequestMethod.GET)
+//    public ResponseEntity<Iterable<Poll>> getAllPolls() {
+//        Iterable<Poll> allPolls = pollRepository.findAll();
+//        return new ResponseEntity<>(allPolls, HttpStatus.OK);
+//    }
+
 
     @RequestMapping(value="/polls", method=RequestMethod.POST)
     public ResponseEntity<?> createPoll(@Valid @RequestBody Poll poll) {
diff --git a/src/main/java/io/zipcoder/tc_spring_poll_application/repositories/PollRepository.java b/src/main/java/io/zipcoder/tc_spring_poll_application/repositories/PollRepository.java
index 8b7fd98..deae57b 100644
--- a/src/main/java/io/zipcoder/tc_spring_poll_application/repositories/PollRepository.java
+++ b/src/main/java/io/zipcoder/tc_spring_poll_application/repositories/PollRepository.java
@@ -1,7 +1,11 @@
 package io.zipcoder.tc_spring_poll_application.repositories;
 
 import io.zipcoder.tc_spring_poll_application.domain.Poll;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
 import org.springframework.data.repository.CrudRepository;
+import org.springframework.data.repository.PagingAndSortingRepository;
 
-public interface PollRepository extends CrudRepository<Poll,Long> {
+public interface PollRepository extends PagingAndSortingRepository<Poll,Long> {
+    Page<Poll> findAll(Pageable pageable);
 }