diff --git a/data/demo.mv.db b/data/demo.mv.db
index f84059d8cf5bc953366dd45d5128b5673bb7d10a..ed8ba420d0244dc24931da62cc9d2c7b49e48f71 100644
Binary files a/data/demo.mv.db and b/data/demo.mv.db differ
diff --git a/src/main/java/com/dre0059/articleprocessor/ArticleProcessorApplication.java b/src/main/java/com/dre0059/articleprocessor/ArticleProcessorApplication.java
index 53a5f877edf2ba3675cdd8e379966f870da9e331..898319f035fa09ac2ec9595a03a35b66d2259e2d 100644
--- a/src/main/java/com/dre0059/articleprocessor/ArticleProcessorApplication.java
+++ b/src/main/java/com/dre0059/articleprocessor/ArticleProcessorApplication.java
@@ -1,3 +1,10 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor;
 
 import org.springframework.boot.SpringApplication;
diff --git a/src/main/java/com/dre0059/articleprocessor/GrobidClient.java b/src/main/java/com/dre0059/articleprocessor/GrobidClient.java
index 5910d36de9ca348ebf06cab621213686dbe15a44..ccb56ec3a5062adb222cfaf98b6edf56203d5a71 100644
--- a/src/main/java/com/dre0059/articleprocessor/GrobidClient.java
+++ b/src/main/java/com/dre0059/articleprocessor/GrobidClient.java
@@ -1,3 +1,10 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor;
 
 import com.dre0059.articleprocessor.config.GrobidProperties;
diff --git a/src/main/java/com/dre0059/articleprocessor/config/DataInitializer.java b/src/main/java/com/dre0059/articleprocessor/config/DataInitializer.java
index d7f91572bb985aca4bdecf05ffb49bda63eebbf5..c89e89ce304c9702380d4620293e400bf2996825 100644
--- a/src/main/java/com/dre0059/articleprocessor/config/DataInitializer.java
+++ b/src/main/java/com/dre0059/articleprocessor/config/DataInitializer.java
@@ -1,3 +1,10 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor.config;
 
 import com.dre0059.articleprocessor.model.Category;
diff --git a/src/main/java/com/dre0059/articleprocessor/config/GrobidProperties.java b/src/main/java/com/dre0059/articleprocessor/config/GrobidProperties.java
index ab83461344f1a913f99131ad98e0f66e84799f4e..090767ffd412ea9b15b83e564c0d92c01baed08c 100644
--- a/src/main/java/com/dre0059/articleprocessor/config/GrobidProperties.java
+++ b/src/main/java/com/dre0059/articleprocessor/config/GrobidProperties.java
@@ -1,3 +1,10 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor.config;
 
 import org.springframework.boot.context.properties.ConfigurationProperties;
diff --git a/src/main/java/com/dre0059/articleprocessor/controller/DocumentController.java b/src/main/java/com/dre0059/articleprocessor/controller/DocumentController.java
index 8b8871bfe3186c736d87ab2c2af51a389ab70df2..cf215022ab83795b966ee28416e69894bc449174 100644
--- a/src/main/java/com/dre0059/articleprocessor/controller/DocumentController.java
+++ b/src/main/java/com/dre0059/articleprocessor/controller/DocumentController.java
@@ -1,3 +1,10 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor.controller;
 
 import com.dre0059.articleprocessor.dto.DocumentDto;
diff --git a/src/main/java/com/dre0059/articleprocessor/controller/FileUploadController.java b/src/main/java/com/dre0059/articleprocessor/controller/FileUploadController.java
index c45c02e24187567af53cdfe513a8d21d0966a6d7..7fbc3fd984180db6645e288194cc60fe04577846 100644
--- a/src/main/java/com/dre0059/articleprocessor/controller/FileUploadController.java
+++ b/src/main/java/com/dre0059/articleprocessor/controller/FileUploadController.java
@@ -1,3 +1,10 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor.controller;
 
 import com.dre0059.articleprocessor.GrobidClient;
diff --git a/src/main/java/com/dre0059/articleprocessor/controller/StatisticsController.java b/src/main/java/com/dre0059/articleprocessor/controller/StatisticsController.java
index 22a46763d8a6ab829f21a7b1f6b129af607d2b13..ff432420489b6710ae8e0daf15398bf67fe13b9a 100644
--- a/src/main/java/com/dre0059/articleprocessor/controller/StatisticsController.java
+++ b/src/main/java/com/dre0059/articleprocessor/controller/StatisticsController.java
@@ -1,3 +1,10 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor.controller;
 
 import com.dre0059.articleprocessor.model.Dokument;
diff --git a/src/main/java/com/dre0059/articleprocessor/controller/TagController.java b/src/main/java/com/dre0059/articleprocessor/controller/TagController.java
index f940fd881752d7c3b7bc378ec1f1ff889c96f9c6..149dfd2e38b805a077020ec59507e78b45926789 100644
--- a/src/main/java/com/dre0059/articleprocessor/controller/TagController.java
+++ b/src/main/java/com/dre0059/articleprocessor/controller/TagController.java
@@ -1,3 +1,10 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor.controller;
 
 import com.dre0059.articleprocessor.repository.TagRepository;
diff --git a/src/main/java/com/dre0059/articleprocessor/dto/CategoryDto.java b/src/main/java/com/dre0059/articleprocessor/dto/CategoryDto.java
index 60e1a71f65eecc776732fc39829106965b980f63..3832f732e597a183c0fea7c08e71ac1402b3cccd 100644
--- a/src/main/java/com/dre0059/articleprocessor/dto/CategoryDto.java
+++ b/src/main/java/com/dre0059/articleprocessor/dto/CategoryDto.java
@@ -1,3 +1,10 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor.dto;
 
 import lombok.Getter;
diff --git a/src/main/java/com/dre0059/articleprocessor/dto/DocumentContentDto.java b/src/main/java/com/dre0059/articleprocessor/dto/DocumentContentDto.java
index ed980b4d9583837773f6344bd58c7b0ab1ad5746..6dff4a93834841cca2ee45b77fb0cbf73bae3e36 100644
--- a/src/main/java/com/dre0059/articleprocessor/dto/DocumentContentDto.java
+++ b/src/main/java/com/dre0059/articleprocessor/dto/DocumentContentDto.java
@@ -1,3 +1,10 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor.dto;
 
 import lombok.Getter;
diff --git a/src/main/java/com/dre0059/articleprocessor/dto/DocumentDto.java b/src/main/java/com/dre0059/articleprocessor/dto/DocumentDto.java
index 539d8c3a8751fcebf98cb985e819f0c567b17063..da48d49d0e84d50fd9e647b5f9232e76675ec417 100644
--- a/src/main/java/com/dre0059/articleprocessor/dto/DocumentDto.java
+++ b/src/main/java/com/dre0059/articleprocessor/dto/DocumentDto.java
@@ -1,3 +1,10 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor.dto;
 
 import lombok.Getter;
diff --git a/src/main/java/com/dre0059/articleprocessor/dto/SimpleDocumentDto.java b/src/main/java/com/dre0059/articleprocessor/dto/SimpleDocumentDto.java
index f6cd696cd67e032286013ab06759585bceb4ee1a..52c0b46ed77c44b9670ae593b18fd2573f2d71bd 100644
--- a/src/main/java/com/dre0059/articleprocessor/dto/SimpleDocumentDto.java
+++ b/src/main/java/com/dre0059/articleprocessor/dto/SimpleDocumentDto.java
@@ -1,3 +1,11 @@
+/**
+ *
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
+
 package com.dre0059.articleprocessor.dto;
 
 import lombok.Getter;
diff --git a/src/main/java/com/dre0059/articleprocessor/dto/TagDto.java b/src/main/java/com/dre0059/articleprocessor/dto/TagDto.java
index 879d372b9e42fdcc112067941fa6e0da7c2ee714..223f302bb779525741a647a2df649013bb997769 100644
--- a/src/main/java/com/dre0059/articleprocessor/dto/TagDto.java
+++ b/src/main/java/com/dre0059/articleprocessor/dto/TagDto.java
@@ -1,3 +1,10 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor.dto;
 
 import lombok.Getter;
diff --git a/src/main/java/com/dre0059/articleprocessor/mapper/CategoryMapper.java b/src/main/java/com/dre0059/articleprocessor/mapper/CategoryMapper.java
index ed93917e5381599c1a0d1cb943353bb4d1bf1c2d..ed224947b528a4a2a48b391d66f3a4223eb676ed 100644
--- a/src/main/java/com/dre0059/articleprocessor/mapper/CategoryMapper.java
+++ b/src/main/java/com/dre0059/articleprocessor/mapper/CategoryMapper.java
@@ -1,3 +1,10 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor.mapper;
 
 import com.dre0059.articleprocessor.dto.CategoryDto;
diff --git a/src/main/java/com/dre0059/articleprocessor/mapper/DocumentMapper.java b/src/main/java/com/dre0059/articleprocessor/mapper/DocumentMapper.java
index e26d71e1d77f2a9677571f439514c62e20cefdc8..2194e9ccd1fa1a2a101f0ca3e377cffd99c9bf9f 100644
--- a/src/main/java/com/dre0059/articleprocessor/mapper/DocumentMapper.java
+++ b/src/main/java/com/dre0059/articleprocessor/mapper/DocumentMapper.java
@@ -1,3 +1,10 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor.mapper;
 
 import com.dre0059.articleprocessor.dto.DocumentContentDto;
diff --git a/src/main/java/com/dre0059/articleprocessor/mapper/TagMapper.java b/src/main/java/com/dre0059/articleprocessor/mapper/TagMapper.java
index b8ee6cd41cf58ae56c475912ee53bc08ebddff22..6ca607feb6d785548cdcad8c0ccb8cf0d1be4075 100644
--- a/src/main/java/com/dre0059/articleprocessor/mapper/TagMapper.java
+++ b/src/main/java/com/dre0059/articleprocessor/mapper/TagMapper.java
@@ -1,3 +1,10 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor.mapper;
 
 import com.dre0059.articleprocessor.dto.TagDto;
diff --git a/src/main/java/com/dre0059/articleprocessor/model/Author.java b/src/main/java/com/dre0059/articleprocessor/model/Author.java
index 93bb2bb90b3ee6c7ed47c98d846da5ac3e2a2631..553a09a87e0541f3a5d9d79d183419cd03f0c743 100644
--- a/src/main/java/com/dre0059/articleprocessor/model/Author.java
+++ b/src/main/java/com/dre0059/articleprocessor/model/Author.java
@@ -1,3 +1,10 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor.model;
 
 import jakarta.persistence.*;
@@ -7,6 +14,15 @@ import lombok.Setter;
 import java.util.ArrayList;
 import java.util.List;
 
+/**
+ *  Trieda Author reprezentuje autora článku v databáze.
+ *  Obsahuje základné informácie o autorovi :
+ *      - meno, priezvisko
+ *      - zoznam dokumentov, ktoré tento autor vytvoril.
+ *  *
+ *  * Využíva vzťah M:N medzi autormi a dokumentmi (jeden autor môže mať viacero dokumentov a
+ *  * jeden dokument môže mať viacerých autorov)
+ */
 @Entity
 @Table(name = "authors")
 @Getter
diff --git a/src/main/java/com/dre0059/articleprocessor/model/Category.java b/src/main/java/com/dre0059/articleprocessor/model/Category.java
index 22deb9fdef4d6689f63f45607fd0be6873771755..231a57f8ff4b7e0de71b00bfc4102c15f7d9818c 100644
--- a/src/main/java/com/dre0059/articleprocessor/model/Category.java
+++ b/src/main/java/com/dre0059/articleprocessor/model/Category.java
@@ -1,13 +1,31 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor.model;
 
 import jakarta.persistence.Column;
 import jakarta.persistence.Entity;
 import jakarta.persistence.Id;
 import jakarta.persistence.Table;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+/**
+ *  Trieda Category reprezentuje kategĂłriu, do ktorej mĂ´Ĺľe byĹĄ dokument zaradenĂ˝.
+ *  Obsahuje id a unikátny názov.
+ *  Kategórie sú predderfinované v config.DataInitializer
+ */
 
 @Entity
 @Table(name = "categories")
-
+@Getter
+@Setter
+@NoArgsConstructor
 public class Category {
     @Id
     private String id;
@@ -19,22 +37,4 @@ public class Category {
         this.id = id;
         this.name = name;
     }
-
-    public Category() {}
-
-    public String getId() {
-        return id;
-    }
-
-    public String getName() {
-        return name;
-    }
-
-    public void setId(String id) {
-        this.id = id;
-    }
-
-    public void setName(String name) {
-        this.name = name;
-    }
 }
diff --git a/src/main/java/com/dre0059/articleprocessor/model/Dokument.java b/src/main/java/com/dre0059/articleprocessor/model/Dokument.java
index d7ab3ffea0bd75d449d05699844062218797ed62..d9a12289f7105ffcc7a334f0e5efb69f232937f0 100644
--- a/src/main/java/com/dre0059/articleprocessor/model/Dokument.java
+++ b/src/main/java/com/dre0059/articleprocessor/model/Dokument.java
@@ -1,3 +1,10 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor.model;
 
 import jakarta.persistence.CascadeType;
@@ -20,6 +27,19 @@ import lombok.Getter;
 import lombok.Setter;
 import org.hibernate.annotations.Cascade;
 
+/**
+ *  Trieda Dokument predstavuje entitu dokumentu v databáze.
+ *  Ukladá informácie :
+ *      - názov
+ *      - rok publikácie
+ *      - DOI
+ *      - abstrakt
+ *      - obsah
+ *      - ...
+ *  *
+ *  * V tejto triede sú definované vzťahy medzi dokumentmi, autormi, tagmi a referenciami.
+ *  * Dokument môže obsahovať viac autorov (M:N), viac tagov (M:N) a môže byť citovaný inými dokumentami.
+ */
 @Setter
 @Getter
 @Entity
diff --git a/src/main/java/com/dre0059/articleprocessor/model/Reference.java b/src/main/java/com/dre0059/articleprocessor/model/Reference.java
index e03045c4ef12ae83abab9daba170dce77c0facb8..c48b346e15a17dcabb26471156830c228d957d4e 100644
--- a/src/main/java/com/dre0059/articleprocessor/model/Reference.java
+++ b/src/main/java/com/dre0059/articleprocessor/model/Reference.java
@@ -1,5 +1,19 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor.model;
 
+/**
+ *  Trieda Reference reprezentuje referenciu medzi dvoma dokumentmi.
+ *  Každá referencia obsahuje :
+ *      - ÄŤĂ­slo alebo pĂ­smeno pre oznaÄŤenie poradia
+ *      - vzĹĄahy medzi dokumentmi (dokument ktorĂ˝ obsahuje zoznam referenciĂ­ (from) a referencovanĂ˝ dokument (to)).
+ */
+
 import jakarta.persistence.*;
 
 @Entity
diff --git a/src/main/java/com/dre0059/articleprocessor/model/Tag.java b/src/main/java/com/dre0059/articleprocessor/model/Tag.java
index aba082fa143b358a436f4f21d9cb530853b51c95..0a3b8306b6d933f4e033de7f00e3d24c6717699c 100644
--- a/src/main/java/com/dre0059/articleprocessor/model/Tag.java
+++ b/src/main/java/com/dre0059/articleprocessor/model/Tag.java
@@ -1,3 +1,10 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor.model;
 
 import jakarta.persistence.*;
@@ -10,6 +17,13 @@ import org.springframework.stereotype.Service;
 import java.util.ArrayList;
 import java.util.List;
 
+/**
+ * Trieda Tag reprezentuje tag (kĺúčové slovo), ktorý môže byť priradený dokumentu.
+ * Každý tag má unikátny názov - neexistujú duplicity
+ *
+ *  Tagy sú spojené s dokumentmi (M:N vzťah)
+ *          jeden dokument môže mať viacero tagov a jeden tag môže byť priradený viacerým dokumentom (M:N vzťah).
+ */
 @Entity
 @NoArgsConstructor
 @Getter
diff --git a/src/main/java/com/dre0059/articleprocessor/repository/AuthorRepository.java b/src/main/java/com/dre0059/articleprocessor/repository/AuthorRepository.java
index 348dde743fdc0be9f9a15adb06a0e61abe765ba3..a552f62b7f7ede4504adb51ced9bb4e5fb9d311d 100644
--- a/src/main/java/com/dre0059/articleprocessor/repository/AuthorRepository.java
+++ b/src/main/java/com/dre0059/articleprocessor/repository/AuthorRepository.java
@@ -1,15 +1,22 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor.repository;
 
 import com.dre0059.articleprocessor.model.Author;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Repository;
 
+/**
+ * Repository pre prácu s entitou Author (pristupuje k DBS)
+ * Rozširuje JpaRepository pre poskytovanie CRUD operácií
+ *
+ */
 @Repository
 public interface AuthorRepository extends JpaRepository<Author, Long> {
-    /*@Query("SELECT CASE WHEN COUNT(a) > 0 THEN true ELSE false END FROM Author a WHERE a.lastName = :lastName AND a.firstName = :firstName")
-    Optional<Author> findByLastNameAndInitial(@Param("lastName") String lastName, @Param("firstName") String firstName);
-    */
-
-    Author findByLastNameAndFirstName(String lastName, String firstName);
 }
 
diff --git a/src/main/java/com/dre0059/articleprocessor/repository/CategoryRepository.java b/src/main/java/com/dre0059/articleprocessor/repository/CategoryRepository.java
index 23f69955b997ab5ba6cccdb7e5e480bd95bf9478..ca42ccafcedb167e226fd8c9647f7ad466188d43 100644
--- a/src/main/java/com/dre0059/articleprocessor/repository/CategoryRepository.java
+++ b/src/main/java/com/dre0059/articleprocessor/repository/CategoryRepository.java
@@ -1,9 +1,21 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor.repository;
 
 import com.dre0059.articleprocessor.model.Category;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Repository;
 
+/**
+ * Repository pre prácu s entitou Category.
+ * Rozširuje JpaRepository pre poskytovanie CRUD operácií.
+ * Obsahuje metódu na vyhľadávanie kategórie podľa názvu.
+ */
 @Repository
 public interface CategoryRepository extends JpaRepository<Category, String> {
     Category findByName(String name);
diff --git a/src/main/java/com/dre0059/articleprocessor/repository/DocumentRepository.java b/src/main/java/com/dre0059/articleprocessor/repository/DocumentRepository.java
index 7d5c73ec61c3067a6381bb92fce226bb6ddff92c..21d2a9d13d12393a17090fce8d864f13255491a8 100644
--- a/src/main/java/com/dre0059/articleprocessor/repository/DocumentRepository.java
+++ b/src/main/java/com/dre0059/articleprocessor/repository/DocumentRepository.java
@@ -1,3 +1,10 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor.repository;
 
 import com.dre0059.articleprocessor.model.*;
@@ -11,7 +18,18 @@ import org.springframework.stereotype.Repository;
 import java.util.List;
 import java.util.Optional;
 
-// uklada extrahovane data
+/**
+ * Repository pre prácu s entitou Dokument.
+ * Rozširuje JpaRepository pre poskytovanie CRUD operácií
+ *
+ * Obsahuje metódy, ktoré využívajú JPA Query Language a EntityGraph
+       na zĂ­skavanie dokumentov a ich vzĹĄahov (autori, tagy a referencie)
+ *
+ *  metĂłdy na :
+ *      - kontrolu existencie dokumentu s rovnakým názvom a autormi
+ *      - vyhľadávanie dokumentu podľa názvu a autorov
+ *      - zistenie referenciĂ­ medzi dokumentmi.
+ */
 @Repository
 public interface DocumentRepository extends JpaRepository<Dokument, Long> {
 
diff --git a/src/main/java/com/dre0059/articleprocessor/repository/ReferenceRepository.java b/src/main/java/com/dre0059/articleprocessor/repository/ReferenceRepository.java
index 820f8760b85a15cbb08ac2a42648ba46b991a853..8c92baa6db80b9c0d1da34e93bc18846c9d4603b 100644
--- a/src/main/java/com/dre0059/articleprocessor/repository/ReferenceRepository.java
+++ b/src/main/java/com/dre0059/articleprocessor/repository/ReferenceRepository.java
@@ -1,3 +1,10 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor.repository;
 
 import com.dre0059.articleprocessor.model.Reference;
@@ -7,6 +14,17 @@ import org.springframework.data.repository.query.Param;
 
 import java.util.List;
 
+/**
+ * Repository pre prácu s entitou Reference.
+ * Rozširuje JpaRepository pre poskytovanie CRUD
+ *
+ * Obsahuje metĂłdy na zĂ­skavanie referenciĂ­ medzi dokumentmi,
+ * ako aj na poÄŤĂ­tanie referenciĂ­ podÄľa roka a kategĂłrie.
+ *
+ * metĂłdy na :
+ *      - mazanie referenciĂ­
+ *      - vyhľadávanie podľa dokumentov (fromDocument alebo toDocument)
+ */
 public interface ReferenceRepository extends JpaRepository<Reference, Long> {
 
     @Query("""
diff --git a/src/main/java/com/dre0059/articleprocessor/repository/TagRepository.java b/src/main/java/com/dre0059/articleprocessor/repository/TagRepository.java
index 60134394ea3b0af29fce98829e6bd36e6bdfe050..9d63068b15aafbb2bc5d3866806d47791593a624 100644
--- a/src/main/java/com/dre0059/articleprocessor/repository/TagRepository.java
+++ b/src/main/java/com/dre0059/articleprocessor/repository/TagRepository.java
@@ -1,3 +1,10 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor.repository;
 
 import com.dre0059.articleprocessor.model.Tag;
@@ -6,9 +13,15 @@ import org.springframework.data.jpa.repository.JpaRepository;
 import java.util.List;
 import java.util.Optional;
 
+/**
+ *  Repository pre prácu s entitou Tag.
+ *  Rozširuje JpaRepository pre poskytovanie CRUD operácií.
+ *
+ *  metĂłdy na :
+ *      - vyhľadávanie tagov podľa názvu
+ *      - vyhľadávanie tagov podľa podreťazca
+ */
 public interface TagRepository extends JpaRepository<Tag, Long> {
-    Optional<Tag> findByTitle(String title);
-
     List<Tag> findByTitleContainingIgnoreCase(String term); // musĂ­ vracaĹĄ List<Tag>
     Optional<Tag> findByTitleIgnoreCase(String title);
 
diff --git a/src/main/java/com/dre0059/articleprocessor/service/CategoryService.java b/src/main/java/com/dre0059/articleprocessor/service/CategoryService.java
index fbcfab92e315c96fd76a0c38e24ac50c89e53267..fb11b11507c438c2f1c1cccdc73250583b3418fa 100644
--- a/src/main/java/com/dre0059/articleprocessor/service/CategoryService.java
+++ b/src/main/java/com/dre0059/articleprocessor/service/CategoryService.java
@@ -1,3 +1,10 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor.service;
 
 import com.dre0059.articleprocessor.dto.CategoryDto;
@@ -6,21 +13,32 @@ import com.dre0059.articleprocessor.repository.CategoryRepository;
 import java.util.List;
 import org.springframework.stereotype.Service;
 
+/**
+ * Trieda manipuláciu s kategóriami dokumentov.
+ *  *
+ * metĂłdy na :
+ *    - získavanie jednotlivých kategórií
+ *    - získavanie zoznamu všetkých kategórií.
+ *
+ * Kategórie sú získavané z databázy cez repository a následne mapované na DTO objekty.
+ *  *
+ */
 @Service
 public class CategoryService {
 
-  private final CategoryMapper categoryMapper;
-  private final CategoryRepository categoryRepository;
+  private final CategoryMapper categoryMapper; // Mapper na mapovanie medzi entitami a DTO
+  private final CategoryRepository categoryRepository; // Repository pre prístup k databáze kategórií
 
   public CategoryService(CategoryMapper categoryMapper, CategoryRepository categoryRepository) {
     this.categoryMapper = categoryMapper;
     this.categoryRepository = categoryRepository;
   }
 
-  public CategoryDto getCategory(String id) {
-    return categoryMapper.toCategoryDto(categoryRepository.findById(id).orElse(null));
-  }
-
+  /**
+   * Získa zoznam všetkých kategórií.
+   *
+   * @return Zoznam DTO objektov všetkých kategórií
+   */
   public List<CategoryDto> getAll() {
     return categoryMapper.toCategoryDtoList(categoryRepository.findAll());
   }
diff --git a/src/main/java/com/dre0059/articleprocessor/service/DocumentService.java b/src/main/java/com/dre0059/articleprocessor/service/DocumentService.java
index e499e5908e13e7ea91fe19bfb978a28b496f6ece..8c17cce0bb1d089dd3a0078ba29049592b2109ea 100644
--- a/src/main/java/com/dre0059/articleprocessor/service/DocumentService.java
+++ b/src/main/java/com/dre0059/articleprocessor/service/DocumentService.java
@@ -1,3 +1,10 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor.service;
 
 import com.dre0059.articleprocessor.dto.DocumentContentDto;
diff --git a/src/main/java/com/dre0059/articleprocessor/service/HeaderService.java b/src/main/java/com/dre0059/articleprocessor/service/HeaderService.java
index d621352759ed8ff49e20a509ee1243231d27f725..e555a71b845db588f09929ae485e00be285e013a 100644
--- a/src/main/java/com/dre0059/articleprocessor/service/HeaderService.java
+++ b/src/main/java/com/dre0059/articleprocessor/service/HeaderService.java
@@ -1,3 +1,10 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor.service;
 
 import com.dre0059.articleprocessor.model.Author;
diff --git a/src/main/java/com/dre0059/articleprocessor/service/ReferenceService.java b/src/main/java/com/dre0059/articleprocessor/service/ReferenceService.java
index a04ccf5acf2031cfcbe087b70161591e2a2d34c9..875c65c2802983e01c4461b4f7a7e946a2ee9b6f 100644
--- a/src/main/java/com/dre0059/articleprocessor/service/ReferenceService.java
+++ b/src/main/java/com/dre0059/articleprocessor/service/ReferenceService.java
@@ -1,3 +1,10 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor.service;
 
 import com.dre0059.articleprocessor.model.Author;
diff --git a/src/main/java/com/dre0059/articleprocessor/service/TEINamespaceContext.java b/src/main/java/com/dre0059/articleprocessor/service/TEINamespaceContext.java
index 4902424f6b2d816643fcb6ed191499336dbcc971..001f7913253d635146d6ba9d60f535dbd7344549 100644
--- a/src/main/java/com/dre0059/articleprocessor/service/TEINamespaceContext.java
+++ b/src/main/java/com/dre0059/articleprocessor/service/TEINamespaceContext.java
@@ -1,3 +1,10 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor.service;
 
 import javax.xml.namespace.NamespaceContext;
diff --git a/src/main/java/com/dre0059/articleprocessor/service/TEIparser.java b/src/main/java/com/dre0059/articleprocessor/service/TEIparser.java
deleted file mode 100644
index 8e631c7f785bca156ad2ed4317430ea607033129..0000000000000000000000000000000000000000
--- a/src/main/java/com/dre0059/articleprocessor/service/TEIparser.java
+++ /dev/null
@@ -1,65 +0,0 @@
-/*package com.dre0059.articleprocessor.service;
-
-import com.dre0059.articleprocessor.model.Author;
-import com.dre0059.articleprocessor.model.Dokument;
-import com.dre0059.articleprocessor.model.Reference;
-import com.dre0059.articleprocessor.service.*;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.stereotype.Service;
-import org.w3c.dom.*;
-import org.xml.sax.InputSource;
-
-import javax.xml.parsers.DocumentBuilder;
-import javax.xml.parsers.DocumentBuilderFactory;
-import java.io.StringReader;
-import java.util.ArrayList;
-import java.util.List;
-
-@Service
-public class TEIparser {
-    @Autowired
-    private ReferenceService referenceService;
-
-    @Autowired
-    private DocumentService documentService;
-
-    public void processReferences(String xmlContent, Dokument parentDocument){
-        try{
-            DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
-            DocumentBuilder builder = dbFactory.newDocumentBuilder();
-            Document doc = builder.parse(new InputSource(new StringReader(xmlContent)));
-
-            NodeList biblioEntries = doc.getElementsByTagName("biblStruct");
-
-            for(int i = 0; i < biblioEntries.getLength(); i++){
-                Element biblEntry = (Element) biblioEntries.item(i);
-                String title = biblEntry.getElementsByTagName("title").item(0).getTextContent();
-                String authorSurname = biblEntry.getElementsByTagName("surname").item(0).getTextContent();
-
-                Dokument referencedDocument = new Dokument();
-                referencedDocument.setTitle(title);
-
-                Author author = new Author();
-                author.setLastname(authorSurname);
-                referencedDocument.setAuthors(List.of(author));
-
-                Dokument savedReferencedDocument = documentService.saveDocument(referencedDocument);
-
-                // save Dokument
-                Reference reference = new Reference();
-                reference.setFromDocument(parentDocument);
-                reference.setToDocument(savedReferencedDocument);
-                referenceService.saveReference(reference);
-
-
-
-            }
-
-        } catch (Exception e){
-            e.printStackTrace();
-        }
-    }
-
-}
-
- */
\ No newline at end of file
diff --git a/src/test/java/com/dre0059/articleprocessor/ArticleProcessorApplicationTests.java b/src/test/java/com/dre0059/articleprocessor/ArticleProcessorApplicationTests.java
index 9bb5c396a8d111454e0cf9fdf335c7031599d9f1..3be6652571344baaf30cae319fa5f2f783dfb1f4 100644
--- a/src/test/java/com/dre0059/articleprocessor/ArticleProcessorApplicationTests.java
+++ b/src/test/java/com/dre0059/articleprocessor/ArticleProcessorApplicationTests.java
@@ -1,3 +1,10 @@
+/**
+ * 
+ * Autor: Eliška Kozáčiková
+ * Ĺ kola: VĹ B-TUO
+ * Fakulta: Fakulta Elektrotechniky a informatiky
+ * Dátum: 30.04.2025
+ */
 package com.dre0059.articleprocessor;
 
 import org.junit.jupiter.api.Test;