[docs/#71] Add Javadoc for Blueprint entity

src/main/java/api/goraebab/domain/blueprint/entity/Blueprint.java

@@ -45,8 +45,8 @@ public void setAsRemote() {
   /**
    * Modify.
    *
-   * @param name the name
-   * @param data the data
+   * @param name the blueprint name
+   * @param data the blueprint JSON format with escape handling applied.
    */
   public void modify(String name, String data) {
     if (name != null) {
@@ -60,8 +60,8 @@ public void modify(String name, String data) {
   /**
    * Constructs a new instance
    *
-   * @param name     the name of the blueprint
-   * @param data     the raw data of the blueprint in JSON format
+   * @param name     the blueprint name
+   * @param data     the blueprint JSON format with escape handling applied.
    * @param isRemote whether the blueprint is copied from remote database
    * @param storage  the storage to be stored
    */

src/main/java/api/goraebab/domain/blueprint/mapper/BlueprintRowMapper.java

@@ -5,6 +5,16 @@
 import java.sql.SQLException;
 import org.springframework.jdbc.core.RowMapper;
 
+/**
+ * A RowMapper implementation that maps a row from the result set to a {@link Blueprint} object.
+ *
+ * <p>This implementation extracts the "data" column from the
+ * result set and maps it to the {@code data} field in the {@link Blueprint} object.</p>
+ *
+ * @author whitem4rk
+ * @version 1.0
+ * @see org.springframework.jdbc.core.RowMapper
+ */
 public class BlueprintRowMapper implements RowMapper<Blueprint> {
 
   private static final String BLUEPRINT_DATA_COLUMN_NAME = "data";

src/main/java/api/goraebab/domain/blueprint/repository/BlueprintRepository.java

@@ -5,8 +5,24 @@
 import org.springframework.stereotype.Repository;
 
 import java.util.List;
-import java.util.Optional;
 
+/**
+ * Repository interface for managing {@link Blueprint} entities.
+ *
+ * <p>Extends the {@link JpaRepository} interface to provide CRUD operations and
+ * additional query methods for {@link Blueprint} objects.</p>
+ *
+ * <p>This interface is a Spring Data JPA repository and will be implemented automatically
+ * by Spring at runtime.</p>
+ *
+ * <p>Note: This repository currently does not include QueryDSL integration.
+ * If you need to perform complex dynamic queries with type safety, you may consider
+ * adding a custom repository interface and implementing QueryDSL functionality.</p>
+ *
+ * @author whitem4rk
+ * @version 1.0
+ * @see org.springframework.data.jpa.repository.JpaRepository
+ */
 @Repository
 public interface BlueprintRepository extends JpaRepository<Blueprint, Long> {