0.0.3

src/main/java/tech/ailef/dbadmin/ApplicationContextUtils.java

@@ -4,6 +4,9 @@ import org.springframework.context.ApplicationContext;
 import org.springframework.context.ApplicationContextAware;
 import org.springframework.stereotype.Component;
 
+/**
+ * Utility class the get the ApplicationContext 
+ */
 @Component
 public class ApplicationContextUtils implements ApplicationContextAware {
 

src/main/java/tech/ailef/dbadmin/DbAdmin.java

@@ -35,6 +35,15 @@ import tech.ailef.dbadmin.dbmapping.DbObjectSchema;
 import tech.ailef.dbadmin.exceptions.DbAdminException;
 import tech.ailef.dbadmin.misc.Utils;
 
+/**
+ * The main DbAdmin class responsible for the initialization phase. This class scans
+ * the user provided package containing the `@Entity` definitions and tries to map each
+ * entity to a DbObjectSchema instance.
+ * 
+ * This process involves determining the correct type for each class field and its 
+ * configuration at the database level. An exception will be thrown if it's not possible
+ * to determine the field type.
+ */
 @Component
 public class DbAdmin {
 	@PersistenceContext
@@ -57,10 +66,6 @@ public class DbAdmin {
 		this.modelsPackage = applicationClass.getModelsPackage();
 		this.entityManager = entityManager;
 		
-    	init();
-	}
-
-	public void init() {
 		ClassPathScanningCandidateComponentProvider provider = new ClassPathScanningCandidateComponentProvider(false);
 		provider.addIncludeFilter(new AnnotationTypeFilter(Entity.class));
 		
@@ -69,7 +74,46 @@ public class DbAdmin {
 			schemas.add(processBeanDefinition(bd));
 		}
 	}
+
+	/**
+	 * Returns all the loaded schemas (i.e. entity classes)
+	 * @return
+	 */
+	public List<DbObjectSchema> getSchemas() {
+		return Collections.unmodifiableList(schemas);
+	}
 	
+	/**
+	 * Finds a schema by its full class name
+	 * @param className	qualified class name
+	 * @return 
+	 * @throws DbAdminException if corresponding schema not found
+	 */
+	public DbObjectSchema findSchemaByClassName(String className) {
+		return schemas.stream().filter(s -> s.getClassName().equals(className)).findFirst().orElseThrow(() -> {
+			return new DbAdminException("Schema " + className + " not found.");
+		});
+	}
+	
+	/**
+	 * Finds a schema by its class
+	 * @param klass
+	 * @return
+	 * @throws DbAdminException if corresponding schema not found
+	 */
+	public DbObjectSchema findSchemaByClass(Class<?> klass) {
+		return findSchemaByClassName(klass.getName());
+	}
+
+	
+	/**
+	 * This method processes a BeanDefinition into a DbObjectSchema object,
+	 * where all fields have been correctly mapped to DbField objects.
+	 * 
+	 * If any field is not mappable, the method will throw an exception.
+	 * @param bd
+	 * @return
+	 */
 	private DbObjectSchema processBeanDefinition(BeanDefinition bd) {
 		String fullClassName = bd.getBeanClassName();
 		
@@ -88,9 +132,7 @@ public class DbAdmin {
 				System.out.println(" - Mapping field " + f);
 				DbField field = mapField(f, schema);
 				if (field == null) {
-//					continue;
-					// TODO: CHECK THIS EXCEPTION
-					throw new DbAdminException("IMPOSSIBLE TO MAP FIELD: " + f);
+					throw new DbAdminException("Impossible to map field: " + f);
 				}
 				field.setSchema(schema);
 				
@@ -123,6 +165,11 @@ public class DbAdmin {
 		return fieldName;
 	}
 	
+	/**
+	 * Determines if a field is nullable from the `@Column` annotation
+	 * @param f
+	 * @return
+	 */
 	private boolean determineNullable(Field f) {
 		Column[] columnAnnotations = f.getAnnotationsByType(Column.class);
 
@@ -135,6 +182,15 @@ public class DbAdmin {
 		return nullable;
 	}
 	
+	/**
+	 * Builds a DbField object from a primitive Java field. This process involves
+	 * determining the correct field name on the database, its type and additional
+	 * attributes (e.g. nullable). 
+	 * This method returns null if a field cannot be mapped to a supported type.
+	 * @param f primitive Java field to construct a DbField from
+	 * @param schema the schema this field belongs to
+	 * @return
+	 */
 	private DbField mapField(Field f, DbObjectSchema schema) {
 		OneToMany oneToMany = f.getAnnotation(OneToMany.class);
 		ManyToMany manyToMany = f.getAnnotation(ManyToMany.class);
@@ -208,7 +264,7 @@ public class DbAdmin {
 	 * Returns the type of a foreign key field, by looking at the type
 	 * of the primary key (defined as `@Id`) in the referenced table.
 	 * 
-	 * @param f
+	 * @param entityClass
 	 * @return
 	 */
 	private DbFieldType mapForeignKeyType(Class<?> entityClass) {
@@ -231,26 +287,4 @@ public class DbAdmin {
 			throw new DbAdminException(e);
 		}
 	}
-	
-	public String getBasePackage() {
-		return modelsPackage;
-	}
-	
-	public List<DbObjectSchema> getSchemas() {
-		return Collections.unmodifiableList(schemas);
-	}
-	
-	public DbObjectSchema findSchemaByClassName(String className) {
-		return schemas.stream().filter(s -> s.getClassName().equals(className)).findFirst().orElseThrow(() -> {
-			return new DbAdminException("Schema " + className + " not found.");
-		});
-	}
-	
-	public DbObjectSchema findSchemaByClass(Class<?> klass) {
-		return findSchemaByClassName(klass.getName());
-	}
-
-	public EntityManager getEntityManager() {
-		return entityManager;
-	}
 }

src/main/java/tech/ailef/dbadmin/annotations/ComputedColumn.java

@@ -5,6 +5,12 @@ import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
+/**
+ * This annotation marks a method as a "virtual" whose value is computed by
+ * using the method itself rather than retrieving it like a physical column
+ * from the database.
+ * 
+ */
 @Retention(RetentionPolicy.RUNTIME)
 @Target(ElementType.METHOD)
 public @interface ComputedColumn {

src/main/java/tech/ailef/dbadmin/annotations/DbAdminAppConfiguration.java

@@ -1,5 +1,10 @@
 package tech.ailef.dbadmin.annotations;
 
+/**
+ * An interface that includes all the configuration methods that
+ * the user has to implement in order to integrate DbAdmin. 
+ *
+ */
 public interface DbAdminAppConfiguration {
 	public String getModelsPackage();
 }

src/main/java/tech/ailef/dbadmin/annotations/DbAdminConfiguration.java

@@ -5,6 +5,10 @@ import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
+/**
+ * Marks the class that holds the DbAdmin configuration.
+ *
+ */
 @Retention(RetentionPolicy.RUNTIME)
 @Target(ElementType.TYPE)
 public @interface DbAdminConfiguration {

src/main/java/tech/ailef/dbadmin/annotations/DisplayFormat.java

@@ -5,6 +5,11 @@ import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
+/**
+ * Specifies a format string for a field, which will be automatically applied
+ * when displaying its value.
+ *
+ */
 @Retention(RetentionPolicy.RUNTIME)
 @Target(ElementType.FIELD)
 public @interface DisplayFormat {

src/main/java/tech/ailef/dbadmin/annotations/DisplayImage.java

@@ -0,0 +1,16 @@
+package tech.ailef.dbadmin.annotations;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Marks a binary field as containing an image, which in turn enables
+ * its display in the interface.
+ *
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.FIELD)
+public @interface DisplayImage {
+}

src/main/java/tech/ailef/dbadmin/annotations/DisplayName.java

@@ -5,6 +5,12 @@ import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
+/**
+ * Marks a method as returning a name that has to be used to display
+ * this item, in addition to its primary key. Use to give users more
+ * readable item names. 
+ *
+ */
 @Retention(RetentionPolicy.RUNTIME)
 @Target(ElementType.METHOD)
 public @interface DisplayName {

src/main/java/tech/ailef/dbadmin/annotations/Filterable.java

@@ -5,6 +5,14 @@ import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
+/**
+ * Marks a field as filterable and places it in the faceted search bar.
+ * (This bar only appears in the interface if one or more fields are filterable 
+ * in the current schema.)
+ * Can only be placed on fields that correspond to physical columns on the 
+ * table (e.g. no `@ManyToMany`/`@OneToMany`) and that are not binary (`byte[]`).
+ *
+ */
 @Retention(RetentionPolicy.RUNTIME)
 @Target(ElementType.FIELD)
 public @interface Filterable {

src/main/java/tech/ailef/dbadmin/controller/DefaultDbAdminController.java

@@ -11,6 +11,7 @@ import java.util.stream.Collectors;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.dao.DataIntegrityViolationException;
 import org.springframework.http.HttpStatus;
+import org.springframework.jdbc.UncategorizedSQLException;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
 import org.springframework.util.LinkedMultiValueMap;
@@ -36,34 +37,11 @@ import tech.ailef.dbadmin.dto.QueryFilter;
 import tech.ailef.dbadmin.exceptions.InvalidPageException;
 import tech.ailef.dbadmin.misc.Utils;
 
+/**
+ * The main DbAdmin controller that register most of the routes of the web interface.
+ */
 @Controller
 @RequestMapping("/dbadmin")
-/**
- * - Sort controls      DONE
- * - @DisplayFormat for fields	DONE
- * - Fix pagination in product where total count = page size = 50 (it shows 'next' button and then empty page) DONE
- * - Show number of entries in home		DONE
- * - @ComputedColumn	name parameter DONE
- * - Basic search
- * - Improve create/edit UX   WIP
- * 		- blob edit doesn't show if it's present WIP
- * - double data source for internal database and settings 
- * - role based authorization (PRO)
- * - Pagination in one to many results?
- * - BLOB upload (WIP: check edit not working)
- * - AI console (PRO)
- * - Action logs
- * - Boolean icons
- * - @Filterable
- * - Boolean in create/edit is checkbox
- * - SQL console (PRO)
- * - JPA Validation (PRO)
- * - Logging
- * - TODO FIX: list model page crash
- *             EDIT error on table product
- * - Logs in web ui
- * - Tests: AutocompleteController, REST API, create/edit
- */
 public class DefaultDbAdminController {
 	@Autowired
 	private DbAdminRepository repository;
@@ -71,6 +49,12 @@ public class DefaultDbAdminController {
 	@Autowired
 	private DbAdmin dbAdmin;
 
+	/**
+	 * Home page with list of schemas
+	 * @param model
+	 * @param query
+	 * @return
+	 */
 	@GetMapping
 	public String index(Model model, @RequestParam(required = false) String query) {
 		List<DbObjectSchema> schemas = dbAdmin.getSchemas();
@@ -90,10 +74,27 @@ public class DefaultDbAdminController {
 		model.addAttribute("activePage", "home");
 		model.addAttribute("title", "Entities | Index");
 		
-
 		return "home";
 	}
 	
+	/**
+	 * Lists the items of a schema by applying a variety of filters:
+	 *  - query: fuzzy search
+	 *  - otherParams: filterable fields
+	 * Includes pagination and sorting options.
+	 *  
+	 * @param model
+	 * @param className
+	 * @param page
+	 * @param query
+	 * @param pageSize
+	 * @param sortKey
+	 * @param sortOrder
+	 * @param otherParams
+	 * @param request
+	 * @param response
+	 * @return
+	 */
 	@GetMapping("/model/{className}")
 	public String list(Model model, @PathVariable String className,
 			@RequestParam(required=false) Integer page, @RequestParam(required=false) String query,
@@ -166,6 +167,12 @@ public class DefaultDbAdminController {
 		}
 	}
 	
+	/**
+	 * Displays information about the schema
+	 * @param model
+	 * @param className
+	 * @return
+	 */
 	@GetMapping("/model/{className}/schema")
 	public String schema(Model model, @PathVariable String className) {
 		DbObjectSchema schema = dbAdmin.findSchemaByClassName(className);
@@ -176,6 +183,13 @@ public class DefaultDbAdminController {
 		return "model/schema";
 	}
 	
+	/**
+	 * Shows a single item
+	 * @param model
+	 * @param className
+	 * @param id
+	 * @return
+	 */
 	@GetMapping("/model/{className}/show/{id}")
 	public String show(Model model, @PathVariable String className, @PathVariable String id) {
 		DbObjectSchema schema = dbAdmin.findSchemaByClassName(className);
@@ -281,8 +295,6 @@ public class DefaultDbAdminController {
 			@RequestParam MultiValueMap<String, String> formParams,
 			@RequestParam Map<String, MultipartFile> files,
 			RedirectAttributes attr) {
-		
-		
 		// Extract all parameters that have exactly 1 value,
 		// as these will be the raw values for the object that is being
 		// created.
@@ -341,6 +353,10 @@ public class DefaultDbAdminController {
 				attr.addFlashAttribute("errorTitle", "Unable to INSERT row");
 				attr.addFlashAttribute("error", e.getMessage());
 				attr.addFlashAttribute("params", params);
+			} catch (UncategorizedSQLException e) {
+				attr.addFlashAttribute("errorTitle", "Unable to INSERT row");
+				attr.addFlashAttribute("error", e.getMessage());
+				attr.addFlashAttribute("params", params);
 			}
 			
 		} else {
@@ -360,6 +376,10 @@ public class DefaultDbAdminController {
 						attr.addFlashAttribute("errorTitle", "Unable to UPDATE row (no changes applied)");
 						attr.addFlashAttribute("error", e.getMessage());
 						attr.addFlashAttribute("params", params);
+					} catch (IllegalArgumentException e) {
+						attr.addFlashAttribute("errorTitle", "Unable to UPDATE row (no changes applied)");
+						attr.addFlashAttribute("error", e.getMessage());
+						attr.addFlashAttribute("params", params);
 					}
 				}
 			} else {

src/main/java/tech/ailef/dbadmin/controller/DownloadController.java

@@ -8,6 +8,7 @@ import org.apache.tika.mime.MimeTypes;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.GetMapping;
@@ -21,7 +22,11 @@ import tech.ailef.dbadmin.dbmapping.DbAdminRepository;
 import tech.ailef.dbadmin.dbmapping.DbFieldValue;
 import tech.ailef.dbadmin.dbmapping.DbObject;
 import tech.ailef.dbadmin.dbmapping.DbObjectSchema;
+import tech.ailef.dbadmin.exceptions.DbAdminException;
 
+/**
+ * Controller to serve file or images (`@DisplayImage`) 
+ */
 @Controller
 @RequestMapping("/dbadmin/download")
 public class DownloadController {
@@ -31,6 +36,28 @@ public class DownloadController {
 	@Autowired
 	private DbAdmin dbAdmin;
 
+	
+	@GetMapping(value="/{className}/{fieldName}/{id}/image", produces = MediaType.IMAGE_JPEG_VALUE)
+	@ResponseBody
+	public ResponseEntity<byte[]> serveImage(@PathVariable String className, 
+			@PathVariable String fieldName, @PathVariable String id) {
+
+		DbObjectSchema schema = dbAdmin.findSchemaByClassName(className);
+		
+		Optional<DbObject> object = repository.findById(schema, id);
+		
+		if (object.isPresent()) {
+			DbObject dbObject = object.get();
+			DbFieldValue dbFieldValue = dbObject.get(fieldName);
+			byte[] file = (byte[])dbFieldValue.getValue();
+			return ResponseEntity.ok(file);
+		} else {
+			throw new ResponseStatusException(HttpStatus.NOT_FOUND, "Object with id " + id + " not found");
+		}
+		
+
+	}
+	
 	@GetMapping("/{className}/{fieldName}/{id}")
 	@ResponseBody
 	public ResponseEntity<byte[]> serveFile(@PathVariable String className, 
@@ -42,7 +69,18 @@ public class DownloadController {
 		
 		if (object.isPresent()) {
 			DbObject dbObject = object.get();
-			DbFieldValue dbFieldValue = dbObject.get(fieldName);
+			
+			DbFieldValue dbFieldValue;
+			try {
+				dbFieldValue = dbObject.get(fieldName);
+			} catch (DbAdminException e) {
+				throw new ResponseStatusException(HttpStatus.NOT_FOUND, "Field not found", e);
+			}
+			
+			if (dbFieldValue.getValue() == null) {
+				throw new ResponseStatusException(HttpStatus.NOT_FOUND, "There's no file attached to this item");
+			}
+			
 			byte[] file = (byte[])dbFieldValue.getValue();
 			
 			String filename = schema.getClassName() + "_" + id + "_" + fieldName;

src/main/java/tech/ailef/dbadmin/dbmapping/AdvancedJpaRepository.java

@@ -80,6 +80,7 @@ public class AdvancedJpaRepository extends SimpleJpaRepository {
         			.setFirstResult((page - 1) * pageSize).getResultList();
 	}
 	
+	@SuppressWarnings("unchecked")
 	private List<Predicate> buildPredicates(String q, Set<QueryFilter> queryFilters,
 			CriteriaBuilder cb, Path root) {
 		List<Predicate> finalPredicates = new ArrayList<>();
@@ -152,16 +153,20 @@ public class AdvancedJpaRepository extends SimpleJpaRepository {
         return finalPredicates;
 	}
 
-	public void update(DbObjectSchema schema, Map<String, String> params, Map<String, MultipartFile> files) {
+	@SuppressWarnings("unchecked")
+	public int update(DbObjectSchema schema, Map<String, String> params, Map<String, MultipartFile> files) {
 		CriteriaBuilder cb = entityManager.getCriteriaBuilder();
 
 		CriteriaUpdate update = cb.createCriteriaUpdate(schema.getJavaClass());
 
-		Root employee = update.from(schema.getJavaClass());
+		Root root = update.from(schema.getJavaClass());
 
 		for (DbField field : schema.getSortedFields()) {
 			if (field.isPrimaryKey()) continue;
 			
+			boolean keepValue = params.getOrDefault("__keep_" + field.getName(), "off").equals("on");
+			if (keepValue) continue;
+			
 			String stringValue = params.get(field.getName());
 			Object value = null;
 			if (stringValue != null && stringValue.isBlank()) stringValue = null;
@@ -169,21 +174,26 @@ public class AdvancedJpaRepository extends SimpleJpaRepository {
 				value = field.getType().parseValue(stringValue);
 			} else {
 				try {
-					MultipartFile file = files.get(field.getJavaName());
-					if (file != null)
-						value = file.getBytes();
+					MultipartFile file = files.get(field.getName());
+					if (file != null) {
+						if (file.isEmpty()) value = null;
+						else value = file.getBytes();
+					}
 				} catch (IOException e) {
 					throw new DbAdminException(e);
 				}
 			}
 			
-			update.set(employee.get(field.getJavaName()), value);
+			if (field.getConnectedSchema() != null)
+				value = field.getConnectedSchema().getJpaRepository().findById(value).get();
+			
+			update.set(root.get(field.getJavaName()), value);
 		}
+		
 		String pkName = schema.getPrimaryKey().getJavaName();
-		update.where(cb.equal(employee.get(pkName), params.get(schema.getPrimaryKey().getName())));
+		update.where(cb.equal(root.get(pkName), params.get(schema.getPrimaryKey().getName())));
 
 		Query query = entityManager.createQuery(update);
-		int rowCount = query.executeUpdate();
-		
+		return query.executeUpdate();
 	}
 }

src/main/java/tech/ailef/dbadmin/dbmapping/DbAdminRepository.java

@@ -131,16 +131,7 @@ public class DbAdminRepository {
 	 */
 	@Transactional
 	public void update(DbObjectSchema schema, Map<String, String> params, Map<String, MultipartFile> files) {
-//		Object[] updateArray = schema.getUpdateArray(params, files);
-//		
-//		String updateFields = 
-//				schema.getSortedFields().stream().map(f -> "`" + f.getName() + "` = ?").collect(Collectors.joining(", "));
-//		
-//		String query = "UPDATE `" + schema.getTableName() + "` SET " + updateFields + " WHERE `" + schema.getPrimaryKey().getName() + "` = ?";
-//		jdbcTemplate.update(query, updateArray);
-		
 		schema.getJpaRepository().update(schema, params, files);
-
 	}
 	
 	@SuppressWarnings("unchecked")
@@ -195,6 +186,12 @@ public class DbAdminRepository {
 		Map<String, Object> allValues = new HashMap<>();
 		allValues.putAll(values);
 		
+		values.keySet().forEach(fieldName -> {
+			if (values.get(fieldName).isBlank()) {
+				allValues.put(fieldName, null);
+			}
+		});
+		
 		files.keySet().forEach(f -> {
 			try {
 				allValues.put(f, files.get(f).getBytes());

src/main/java/tech/ailef/dbadmin/dbmapping/DbField.java

@@ -4,6 +4,8 @@ import java.lang.reflect.Field;
 
 import com.fasterxml.jackson.annotation.JsonIgnore;
 
+import tech.ailef.dbadmin.annotations.DisplayImage;
+
 public class DbField {
 	protected String dbName;
 
@@ -114,6 +116,10 @@ public class DbField {
 		return type == DbFieldType.BYTE_ARRAY;
 	}
 	
+	public boolean isImage() {
+		return field.getAnnotation(DisplayImage.class) != null;
+	}
+	
 	public String getFormat() {
 		return format;
 	}

src/main/java/tech/ailef/dbadmin/dbmapping/DbObject.java

@@ -21,6 +21,9 @@ public class DbObject {
 	private DbObjectSchema schema;
 	
 	public DbObject(Object instance, DbObjectSchema schema) {
+		if (instance == null)
+			throw new DbAdminException("Trying to build object with instance == null");
+		
 		this.instance = instance;
 		this.schema = schema;
 	}
@@ -54,6 +57,8 @@ public class DbObject {
 		OneToOne oneToOne = field.getPrimitiveField().getAnnotation(OneToOne.class);
 		if (oneToOne != null || manyToOne != null) {
 			Object linkedObject = get(field.getJavaName()).getValue();
+			if (linkedObject == null) return null;
+			
 			DbObject linkedDbObject = new DbObject(linkedObject, field.getConnectedSchema());
 			return linkedDbObject;
 		} else {
@@ -120,7 +125,9 @@ public class DbObject {
 		
 		if (displayNameMethod.isPresent()) {
 			try {
-				return displayNameMethod.get().invoke(instance).toString();
+				Object displayName = displayNameMethod.get().invoke(instance);
+				if (displayName == null) return null;
+				else return displayName.toString();
 			} catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException e) {
 				throw new DbAdminException(e);
 			}
@@ -147,26 +154,6 @@ public class DbObject {
 		}
 	}
 	
-//	public void initializeFromMap(Map<String, String> values) {
-////		String pkValue = values.get(schema.getPrimaryKey().getName());
-//		
-//		List<String> fields = 
-//			values.keySet().stream().filter(f -> !f.startsWith("__dbadmin_")).collect(Collectors.toList());
-//		
-//		for (String field : fields) {
-//			String fieldJavaName = Utils.snakeToCamel(field);
-//			Method setter = findSetter(fieldJavaName);
-//			if (setter == null)
-//				throw new DbAdminException("Unable to find setter for field " + fieldJavaName + " in class " + schema.getClassName());
-//			
-//			try {
-//				setter.invoke(instance, values.get(field));
-//			} catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException e) {
-//				throw new DbAdminException(e);
-//			}
-//		}
-//	}
-	
 	public void set(String fieldName, Object value) {
 		Method setter = findSetter(fieldName);
 		
@@ -199,8 +186,11 @@ public class DbObject {
 		String capitalize = Character.toUpperCase(fieldName.charAt(0)) + fieldName.substring(1);
 		Method[] methods = instance.getClass().getDeclaredMethods();
 		
+		DbField dbField = schema.getFieldByJavaName(fieldName);
+		if (dbField == null) return null;
+		
 		String prefix = "get";
-		if (schema.getFieldByJavaName(fieldName).getType() == DbFieldType.BOOLEAN) {
+		if (dbField.getType() == DbFieldType.BOOLEAN) {
 			prefix = "is";
 		}
 		

src/main/java/tech/ailef/dbadmin/dbmapping/DbObjectSchema.java

@@ -14,6 +14,7 @@ import com.fasterxml.jackson.annotation.JsonIgnore;
 
 import jakarta.persistence.ManyToMany;
 import jakarta.persistence.OneToMany;
+import jakarta.persistence.OneToOne;
 import jakarta.persistence.Table;
 import tech.ailef.dbadmin.DbAdmin;
 import tech.ailef.dbadmin.annotations.ComputedColumn;
@@ -128,8 +129,13 @@ public class DbObjectSchema {
 	public List<DbField> getSortedFields() {
 		return getFields().stream()
 			.filter(f -> {
-				return f.getPrimitiveField().getAnnotation(OneToMany.class) == null
+				boolean toMany = f.getPrimitiveField().getAnnotation(OneToMany.class) == null
 					&& f.getPrimitiveField().getAnnotation(ManyToMany.class) == null;
+				
+				OneToOne oneToOne = f.getPrimitiveField().getAnnotation(OneToOne.class);
+				boolean mappedBy = oneToOne != null && !oneToOne.mappedBy().isBlank();
+				
+				return toMany && !mappedBy;
 			})
 			.sorted((a, b) -> {
 				if (a.isPrimaryKey() && !b.isPrimaryKey())

src/main/resources/static/css/dbadmin.css

@@ -1,3 +1,7 @@
+.separator-light {
+	opacity: 25%;
+}
+
 form.delete-form {
 	display: inline-block;	
 }
@@ -52,7 +56,7 @@ tr.table-data-row td:last-child, tr.table-data-row th:last-child {
 
 .row-icons {
 	font-size: 1.2rem;
-	width: 128px;
+	width: 96px;
 }
 
 h1 .bi {
@@ -112,6 +116,8 @@ h1 a:hover {
 	max-height: 300px;
 	overflow: auto;
 	z-index: 999;
+	-webkit-box-shadow: 0px 11px 12px -1px rgba(0,0,0,0.13); 
+	box-shadow: 0px 11px 12px -1px rgba(0,0,0,0.13);
 }
 
 .suggestion {
@@ -124,7 +130,7 @@ h1 a:hover {
 
 .suggestion:hover {
 	cursor: pointer;
-	background-color: #FFF;
+	background-color: #EBF7FF;
 	border-bottom: 2px solid #ADDEFF;
 }
 
@@ -173,4 +179,15 @@ AUTOCOMPLETE
  
 .filterable-field .card-header:hover {
 	background-color: #F0F0F0;
+}
+
+/**
+ * Images
+ */
+.thumb-image {
+	max-width: 128px;
+}
+.img-muted {
+    filter: brightness(50%);
+     
 }

src/main/resources/static/js/create.js

@@ -0,0 +1,43 @@
+function showFileInput(inputElement) {
+	inputElement.classList.add('d-block');
+	inputElement.classList.remove('d-none');
+	inputElement.value = '';
+	
+	let img = document.getElementById(`__thumb_${inputElement.name}`);
+	if (img != null) {
+		img.classList.add('img-muted');
+	}
+}
+
+function hideFileInput(inputElement) {
+	inputElement.classList.add('d-none');
+	inputElement.classList.remove('d-block');
+	
+	let img = document.getElementById(`__thumb_${inputElement.name}`);
+	if (img != null) {
+		img.classList.remove('img-muted');
+	}
+}
+
+document.addEventListener("DOMContentLoaded", () => {
+	let checkboxes = document.querySelectorAll(".binary-field-checkbox");
+	
+	checkboxes.forEach(checkbox => {
+		let fieldName = checkbox.dataset.fieldname;
+		
+		if (!checkbox.checked) {
+			showFileInput(document.querySelector(`input[name="${fieldName}"]`));
+		} else {
+			hideFileInput(document.querySelector(`input[name="${fieldName}"]`));
+		}
+		
+		checkbox.addEventListener('change', function(e) {
+			if (!e.target.checked) {
+				showFileInput(document.querySelector(`input[name="${fieldName}"]`));				 
+			} else {
+				hideFileInput(document.querySelector(`input[name="${fieldName}"]`));
+			}
+
+		});
+	});
+});

src/main/resources/static/js/table.js

@@ -1,15 +1,23 @@
 function updateBulkActions(table, selected) {
 	let divs = document.querySelectorAll(".bulk-actions");
 	divs.forEach(div => {
-		div.innerHTML = `${selected} items selected <input type="submit" form="delete-form" class="ui-btn btn btn-secondary" value="Delete">`;
+		div.innerHTML = `${selected} items selected <input type="submit" form="multi-delete-form" class="ui-btn btn btn-secondary" value="Delete">`;
 	});
 }
 
 document.addEventListener("DOMContentLoaded", () => {
 	let selected = 0;
 
-	if (document.getElementById('delete-form') != null) {
-		document.getElementById('delete-form').addEventListener('submit', function(e) {
+	document.querySelectorAll(".delete-form").forEach(form => {
+		form.addEventListener('submit', function(e) {
+			if (!confirm('Are you sure you want to delete this item?')) {
+				e.preventDefault();
+			}
+		});
+	});
+
+	if (document.getElementById('multi-delete-form') != null) {
+		document.getElementById('multi-delete-form').addEventListener('submit', function(e) {
 			if (selected == 0) {
 				e.preventDefault();
 				alert('No items selected');

src/main/resources/templates/fragments/data_row.html

@@ -5,9 +5,18 @@
 		<tr th:fragment="data_row(row, selectable)" class="table-data-row">
 			<td th:if=${selectable} class="table-checkbox">
 				<input type="checkbox" class="form-check-input" name="ids"
-					th:value="${row.getPrimaryKeyValue()}" form="delete-form">
+					th:value="${row.getPrimaryKeyValue()}" form="multi-delete-form">
 			</td>
-			<td th:each="field : ${schema.getSortedFields()}">
+			<td class="text-center row-icons">
+				<a class="ps-1" th:href="|/dbadmin/model/${schema.getJavaClass().getName()}/edit/${row.getPrimaryKeyValue()}|">
+					<i class="bi bi-pencil-square"></i></a>
+				<form class="delete-form" method="POST" 
+					th:action="|/dbadmin/model/${schema.getJavaClass().getName()}/delete/${row.getPrimaryKeyValue()}|">
+					<button><i class="bi bi-trash"></i></button>
+				</form>
+			</td>
+			<td th:each="field : ${schema.getSortedFields()}"
+				th:classAppend="${field.isBinary() ? 'text-center' : ''}">
 				<th:block th:if="${!row.has(field)}">
 					 <span class="font-monospace null-label">NULL</span>
 				</th:block>
@@ -19,21 +28,12 @@
 			<td th:each="colName : ${schema.getComputedColumnNames()}">
 				<span th:text="${row.compute(colName)}"></span>
 			</td>
-			
-			<td class="text-center row-icons" th:if="${selectable}">
-				<a class="ps-1" th:href="|/dbadmin/model/${schema.getJavaClass().getName()}/edit/${row.getPrimaryKeyValue()}|">
-					<i class="bi bi-pencil-square"></i></a>
-				<form class="delete-form" method="POST" 
-					th:action="|/dbadmin/model/${schema.getJavaClass().getName()}/delete/${row.getPrimaryKeyValue()}|">
-					<button><i class="bi bi-trash"></i></button>
-				</form>
-			</td>
 		</tr>
 		
 		
 		<!-- data-row-field fragment -->
 		<th:block th:fragment="data_row_field(field, object)">
-			<th:block th:if="${field.getConnectedType() != null}">
+			<th:block th:if="${field.getConnectedType() != null && object.traverse(field) != null}">
 				<a th:href="|/dbadmin/model/${field.getConnectedType().getName()}/show/${object.traverse(field).getPrimaryKeyValue()}|">
 					<span th:text="${object.has(field) ? object.traverse(field).getPrimaryKeyValue() : 'NULL'}"></span>
 				</a>
@@ -61,12 +61,19 @@
 					</th:block>
 					<span th:unless="${!field.isBinary()}">
 						<th:block th:if="${object.get(field).getValue()}">
+							<div th:if="${field.isImage()}" class="mb-2">
+								<img class="thumb-image" 
+									th:src="|/dbadmin/download/${schema.getClassName()}/${field.getJavaName()}/${object.getPrimaryKeyValue()}/image|">
+							</div>
+						
 							<a class="text-decoration-none null-label" 
-								th:href="|/dbadmin/download/${schema.getJavaClass().getName()}/${field.getName()}/${object.get(schema.getPrimaryKey()).getValue()}|">
+								th:href="|/dbadmin/download/${schema.getClassName()}/${field.getJavaName()}/${object.getPrimaryKeyValue()}|">
 								<i class="align-middle bi bi-box-arrow-down"></i><span class="align-middle"> Download 
 								<!--/*--> <span class="text-muted">([[ ${object.get(field).getValue().length} ]] bytes)</span> <!--*/-->
 								</span>
 							</a>
+							
+							
 						</th:block>
 						<th:block th:unless="${object.get(field).getValue()}">
 							<span class="font-monospace null-label">NULL</span>

src/main/resources/templates/fragments/resources.html

@@ -10,6 +10,7 @@
 		<script type="text/javascript" src="/js/autocomplete.js"></script>
 		<script type="text/javascript" src="/js/autocomplete-multi.js"></script>
 		<script type="text/javascript" src="/js/filters.js"></script>
+		<script type="text/javascript" src="/js/create.js"></script>
 		<title th:text="${title != null ? title + ' | Spring Boot DB Admin Panel' : 'Spring Boot DB Admin Panel'}"></title>
 	</head>
 	

src/main/resources/templates/fragments/table.html

@@ -9,6 +9,7 @@
 			<div th:if="${results != null && results.size() > 0}">
 				<table class="table table-striped align-middle mt-3">
 					<tr class="table-data-row">
+						<th class="row-icons"></th>
 						<th th:each="field : ${schema.getSortedFields()}">
 							<div class="m-0 p-0 d-flex justify-content-between">
 								<div class="column-title">

src/main/resources/templates/fragments/table_selectable.html

@@ -2,18 +2,19 @@
 <html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="https://www.thymeleaf.org">
 	<head></head>
 	<body>
-		<div class="table-selectable" th:fragment="table(results, schema)">
+		<div class="table-selectable table-responsive" th:fragment="table(results, schema)">
 			<div th:if="${results.isEmpty()}">
 				<p>This table contains no data.</p>
 			</div>
 			<div th:if="${results.size() > 0}">
-				<form id="delete-form" th:action="|/dbadmin/model/${schema.getClassName()}/delete|" method="POST">
+				<form id="multi-delete-form" th:action="|/dbadmin/model/${schema.getClassName()}/delete|" method="POST">
 				</form>
 				<nav th:replace="~{fragments/resources :: pagination(${page})}">
 				</nav>
 				<table class="table table-striped align-middle mt-3">
 					<tr class="table-data-row">
 						<th class="table-checkbox"><input type="checkbox" class="form-check-input check-all"></th>
+						<th></th>
 						<th class="table-data-row" th:each="field : ${schema.getSortedFields()}">
 							<div class="m-0 p-0 d-flex justify-content-between">
 								<div class="column-title">
@@ -56,7 +57,6 @@
 							</div>
 							<p class="m-0 p-0 dbfieldtype"><small>COMPUTED</small></p>
 						</th>
-						<th></th>
 					</tr>
 					<th:block th:each="r : ${results}">
 						<tr th:replace="~{fragments/data_row :: data_row(row=${r},selectable=${true})}"></tr>

src/main/resources/templates/model/create.html

@@ -13,9 +13,10 @@
 
 					<h1 class="fw-bold mb-4">
 						<i class="align-middle bi bi-database"></i> 
-						<span class="align-middle">Entities</span>
+						<span class="align-middle"><a href="/dbadmin">Entities</a></span>
 						<i class="align-middle bi bi-chevron-double-right"></i> 
-						<span class="align-middle"> [[ ${schema.getJavaClass().getSimpleName()} ]] </span>
+						<a class="align-middle" th:href="|/dbadmin/model/${schema.getJavaClass().getName()}|">
+						 [[ ${schema.getJavaClass().getSimpleName()} ]] </a>
 						<i class="align-middle bi bi-chevron-double-right"></i> 
 						<span class="align-middle" th:text="${create ? 'Create' : 'Edit'}"></span>
 						<th:block th:if="${!create}">
@@ -30,8 +31,9 @@
 		        				<form class="form" enctype="multipart/form-data" method="post" th:action="|/dbadmin/model/${className}/create|">
 		        					<input type="hidden" name="__dbadmin_create" th:value="${create}">
 									<div th:each="field : ${schema.getSortedFields()}" class="mt-2">
-										<label th:for="|__id_${field.getName()}|" class="mb-1">[[ ${field.getName()} ]]</label>
-									
+										<label th:for="|__id_${field.getName()}|" class="mb-1 fw-bold">
+											[[ ${field.getName()} ]]
+										</label>
 										
 										<th:block th:if="${field.isForeignKey()}">
 											<div th:replace="~{fragments/forms :: input_autocomplete(field=${field},  value=${
@@ -39,15 +41,14 @@
 														 : (object != null ? object.traverse(field).getPrimaryKeyValue() : '' )
 											})}">
 											</div>
-											<!-- <input type="hidden" th:value="${field.getType()}" th:name="|__dbadmin_${field.getName()}_type|"> -->
 										</th:block>
 										<th:block th:unless="${field.isForeignKey()}">
-											<input placeholder="NULL" th:type="${field.getType().getHTMLName()}" 
+											
+											<input  th:if="${!field.isBinary()}" placeholder="NULL" th:type="${field.getType().getHTMLName()}" 
 													th:name="${field.getName()}" 
 													th:value="
 														${create ? (params != null ? params.getOrDefault(field.getName(), '') : '') 
 														 : (object != null ? object.get(field).getValue() : '' )}
-														
 													"
 													class="form-control" th:id="|__id_${field.getName()}|"
 													th:classAppend="${field.isPrimaryKey() && object != null ? 'disable' : ''}"
@@ -55,8 +56,33 @@
 													step="any"
 													oninvalid="this.setCustomValidity('This field is not nullable.')"
 													oninput="this.setCustomValidity('')">
-											<!-- <input type="hidden" th:value="${field.getType()}" th:name="|__dbadmin_${field.getName()}_type|"> -->
+													
+											<!--/*--> Binary field <!--*/-->
+											<th:block th:if="${field.isBinary()}">
+												<!--/*--> Edit options <!--*/-->
+												<div th:if="${!create && object.get(field).getValue() != null}">
+													<input type="checkbox"
+														class="binary-field-checkbox"
+														th:data-fieldname="${field.getName()}"
+														th:id="|__keep_${field.getName()}|"
+														checked
+														th:name="|__keep_${field.getName()}|">
+														<span>Keep current data</span>
+													<div th:if="${field.isImage()}" class="mb-2">
+														<img class="thumb-image" th:id="|__thumb_${field.getName()}|"
+															th:src="|/dbadmin/download/${schema.getClassName()}/${field.getJavaName()}/${object.getPrimaryKeyValue()}/image|">
+													</div>
+												</div>
+												<!--/*--> File input <!--*/-->
+												<input th:if="${field.isBinary()}" placeholder="NULL" th:type="${field.getType().getHTMLName()}" 
+													th:name="${field.getName()}" 
+													class="form-control mt-2" th:id="|__id_${field.getName()}|"
+													th:required="${!field.isNullable()}"
+													oninvalid="this.setCustomValidity('This field is not nullable.')"
+													oninput="this.setCustomValidity('')">
+											</th:block>
 										</th:block>
+										<div class="separator mt-3 mb-2 separator-light"></div>
 									</div>
 									
 									<div th:each="field : ${schema.getManyToManyOwnedFields()}" class="mt-3">

src/main/resources/templates/model/show.html

@@ -12,7 +12,7 @@
 					<h1 class="fw-bold mb-4"><i class="align-middle bi bi-database"></i> 
 						<a class="align-middle" href="/dbadmin">Entities</a> 
 						<i class="align-middle bi bi-chevron-double-right"></i>
-						<a class="align-middle "th:href="|/dbadmin/model/${schema.getJavaClass().getName()}|"> 
+						<a class="align-middle" th:href="|/dbadmin/model/${schema.getJavaClass().getName()}|"> 
 						[[ ${schema.getJavaClass().getSimpleName()} ]]</a>
 						<i class="align-middle bi bi-chevron-double-right"></i>
 						<span class="align-middle"> [[ ${object.getDisplayName()} ]]</span>
@@ -44,7 +44,7 @@
 												<i title="Foreign Key" class="bi bi-link"></i>
 											</span>
 										</td>
-										<td>
+										<td class="fw-bold">
 											<span class="m-0 p-0" th:text="${field.getName()}"></span>
 										</td>
 										<td>