0.0.2

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

@@ -95,7 +95,6 @@ public class DbAdmin {
 				field.setSchema(schema);
 				
 				schema.addField(field);
-				System.out.println(field);
 			}
 			
 			return schema;

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

@@ -0,0 +1,11 @@
+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;
+
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.FIELD)
+public @interface Filterable {
+}

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

@@ -5,6 +5,7 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import java.util.Set;
 import java.util.stream.Collectors;
 
 import org.springframework.beans.factory.annotation.Autowired;
@@ -12,6 +13,7 @@ import org.springframework.dao.DataIntegrityViolationException;
 import org.springframework.http.HttpStatus;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
+import org.springframework.util.LinkedMultiValueMap;
 import org.springframework.util.MultiValueMap;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
@@ -22,12 +24,17 @@ import org.springframework.web.multipart.MultipartFile;
 import org.springframework.web.server.ResponseStatusException;
 import org.springframework.web.servlet.mvc.support.RedirectAttributes;
 
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
 import tech.ailef.dbadmin.DbAdmin;
 import tech.ailef.dbadmin.dbmapping.DbAdminRepository;
 import tech.ailef.dbadmin.dbmapping.DbObject;
 import tech.ailef.dbadmin.dbmapping.DbObjectSchema;
+import tech.ailef.dbadmin.dto.CompareOperator;
 import tech.ailef.dbadmin.dto.PaginatedResult;
+import tech.ailef.dbadmin.dto.QueryFilter;
 import tech.ailef.dbadmin.exceptions.InvalidPageException;
+import tech.ailef.dbadmin.misc.Utils;
 
 @Controller
 @RequestMapping("/dbadmin")
@@ -45,10 +52,15 @@ import tech.ailef.dbadmin.exceptions.InvalidPageException;
  * - 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
- * - ERROR 500: http://localhost:8080/dbadmin/model/tech.ailef.dbadmin.test.models.Order?query=2021 
+ * - TODO FIX: list model page crash
+ *             EDIT error on table product
  * - Logs in web ui
  * - Tests: AutocompleteController, REST API, create/edit
  */
@@ -86,16 +98,55 @@ public class DefaultDbAdminController {
 	public String list(Model model, @PathVariable String className,
 			@RequestParam(required=false) Integer page, @RequestParam(required=false) String query,
 			@RequestParam(required=false) Integer pageSize, @RequestParam(required=false) String sortKey, 
-			@RequestParam(required=false) String sortOrder) {
+			@RequestParam(required=false) String sortOrder, @RequestParam MultiValueMap<String, String> otherParams,
+			HttpServletRequest request,
+			HttpServletResponse response) {
+		
 		if (page == null) page = 1;
 		if (pageSize == null) pageSize = 50;
 		
+		Set<QueryFilter> queryFilters = Utils.computeFilters(otherParams);
+		if (otherParams.containsKey("remove_field")) {
+			List<String> fields = otherParams.get("remove_field");
+			
+			for (int i = 0; i < fields.size(); i++) {
+				QueryFilter toRemove = 
+					new QueryFilter(
+						fields.get(i), 
+						CompareOperator.valueOf(otherParams.get("remove_op").get(i).toUpperCase()), 
+						otherParams.get("remove_value").get(i)
+					);
+				queryFilters.removeIf(f -> f.equals(toRemove));
+			}
+			
+			MultiValueMap<String, String> parameterMap = Utils.computeParams(queryFilters);
+			
+			MultiValueMap<String, String> filteredParams = new LinkedMultiValueMap<>();
+ 			request.getParameterMap().entrySet().stream()
+				.filter(e -> !e.getKey().startsWith("remove_") && !e.getKey().startsWith("filter_"))
+				.forEach(e -> {
+					filteredParams.putIfAbsent(e.getKey(), new ArrayList<>());
+					for (String v : e.getValue()) {
+						if (filteredParams.get(e.getKey()).isEmpty()) {
+							filteredParams.get(e.getKey()).add(v);
+						} else {
+							filteredParams.get(e.getKey()).set(0, v);
+						}
+					}
+				});
+ 			
+ 			filteredParams.putAll(parameterMap);
+ 			String queryString = Utils.getQueryString(filteredParams);
+			String redirectUrl = request.getServletPath() + queryString; 
+			return "redirect:" + redirectUrl.trim();
+		}
+		
 		DbObjectSchema schema = dbAdmin.findSchemaByClassName(className);
 		
 		try {
 			PaginatedResult result = null;
-			if (query != null) {
-				result = repository.search(schema, query, page, pageSize, sortKey, sortOrder);
+			if (query != null || !otherParams.isEmpty()) {
+				result = repository.search(schema, query, page, pageSize, sortKey, sortOrder, queryFilters);
 			} else {
 				result = repository.findAll(schema, page, pageSize, sortKey, sortOrder);
 			}
@@ -107,6 +158,7 @@ public class DefaultDbAdminController {
 			model.addAttribute("sortKey", sortKey);
 			model.addAttribute("query", query);
 			model.addAttribute("sortOrder", sortOrder);
+			model.addAttribute("activeFilters", queryFilters);
 			return "model/list";
 			
 		} catch (InvalidPageException e) {
@@ -333,9 +385,12 @@ public class DefaultDbAdminController {
 		}
 	}
 	
+	
 	@GetMapping("/settings")
 	public String settings(Model model) {
 		model.addAttribute("activePage", "settings");
 		return "settings";
 	}
+	
+
 }

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

@@ -0,0 +1,27 @@
+package tech.ailef.dbadmin.controller;
+
+import java.util.Map;
+
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ModelAttribute;
+
+import jakarta.servlet.http.HttpServletRequest;
+
+/**
+ * This class registers some ModelAttribute objects that are
+ * used in all templates. 
+ */
+@ControllerAdvice
+public class GlobalController {
+
+	/**
+	 * A multi valued map containing the query parameters. It is used primarily
+	 * in building complex URL when performing faceted search with multiple filters.
+	 * @param request the incoming request
+	 * @return multi valued map of request parameters
+	 */
+	@ModelAttribute("queryParams")
+	public Map<String, String[]> getQueryParams(HttpServletRequest request) {
+		return request.getParameterMap();
+	}
+}

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

@@ -1,17 +1,29 @@
 package tech.ailef.dbadmin.dbmapping;
 
+import java.io.IOException;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
 import java.util.ArrayList;
+import java.util.HashSet;
 import java.util.List;
+import java.util.Map;
+import java.util.Set;
 import java.util.stream.Collectors;
 
 import org.springframework.data.jpa.repository.support.SimpleJpaRepository;
+import org.springframework.web.multipart.MultipartFile;
 
 import jakarta.persistence.EntityManager;
+import jakarta.persistence.Query;
 import jakarta.persistence.criteria.CriteriaBuilder;
 import jakarta.persistence.criteria.CriteriaQuery;
+import jakarta.persistence.criteria.CriteriaUpdate;
 import jakarta.persistence.criteria.Path;
 import jakarta.persistence.criteria.Predicate;
 import jakarta.persistence.criteria.Root;
+import tech.ailef.dbadmin.dto.CompareOperator;
+import tech.ailef.dbadmin.dto.QueryFilter;
+import tech.ailef.dbadmin.exceptions.DbAdminException;
 
 @SuppressWarnings("rawtypes")
 public class AdvancedJpaRepository extends SimpleJpaRepository {
@@ -27,51 +39,151 @@ public class AdvancedJpaRepository extends SimpleJpaRepository {
 		this.schema = schema;
 	}
 	
-	public long count(String q) {
+	@SuppressWarnings("unchecked")
+	public long count(String q, Set<QueryFilter> queryFilters) {
 		CriteriaBuilder cb = entityManager.getCriteriaBuilder();
         CriteriaQuery query = cb.createQuery(Long.class);
         Root root = query.from(schema.getJavaClass());
-        
-        List<DbField> stringFields = 
-        	schema.getSortedFields().stream().filter(f -> f.getType() == DbFieldType.STRING)
-        			.collect(Collectors.toList());
-        
-        System.out.println("STRING F = " + stringFields);
-        List<Predicate> predicates = new ArrayList<>();
-        for (DbField f : stringFields) {
-        	Path path = root.get(f.getJavaName());
-        	predicates.add(cb.like(cb.lower(cb.toString(path)), "%" + q.toLowerCase() + "%"));
-        }
 
+        List<Predicate> finalPredicates = buildPredicates(q, queryFilters, cb, root);
+        
         query.select(cb.count(root.get(schema.getPrimaryKey().getName())))
-            .where(cb.or(predicates.toArray(new Predicate[predicates.size()])));
+            .where(
+        		cb.and(
+                		finalPredicates.toArray(new Predicate[finalPredicates.size()])
+                	)
+        		);
         
         Object o = entityManager.createQuery(query).getSingleResult();
         return (Long)o;
 	}
 	
 	@SuppressWarnings("unchecked")
-	public List<Object> search(String q, int page, int pageSize, String sortKey, String sortOrder) {
-        CriteriaBuilder cb = entityManager.getCriteriaBuilder();
+	public List<Object> search(String q, int page, int pageSize, String sortKey, String sortOrder, Set<QueryFilter> filters) {
+		CriteriaBuilder cb = entityManager.getCriteriaBuilder();
         CriteriaQuery query = cb.createQuery(schema.getJavaClass());
         Root root = query.from(schema.getJavaClass());
         
-        List<DbField> stringFields = 
-        	schema.getSortedFields().stream().filter(f -> f.getType() == DbFieldType.STRING)
-        			.collect(Collectors.toList());
+        List<Predicate> finalPredicates = buildPredicates(q, filters, cb, root);
         
-        List<Predicate> predicates = new ArrayList<>();
-        for (DbField f : stringFields) {
-        	Path path = root.get(f.getJavaName());
-        	predicates.add(cb.like(cb.lower(cb.toString(path)), "%" + q.toLowerCase() + "%"));
-        }
-
         query.select(root)
-            .where(cb.or(predicates.toArray(new Predicate[predicates.size()])));
+            .where(
+            	cb.and(
+            		finalPredicates.toArray(new Predicate[finalPredicates.size()]) // query search on String fields
+            	)
+            	
+            );
         if (sortKey !=  null)
         	query.orderBy(sortOrder.equals("DESC") ? cb.desc(root.get(sortKey)) : cb.asc(root.get(sortKey)));
         
         return entityManager.createQuery(query).setMaxResults(pageSize)
         			.setFirstResult((page - 1) * pageSize).getResultList();
 	}
+	
+	private List<Predicate> buildPredicates(String q, Set<QueryFilter> queryFilters,
+			CriteriaBuilder cb, Path root) {
+		List<Predicate> finalPredicates = new ArrayList<>();
+        
+        List<DbField> stringFields = 
+        	schema.getSortedFields().stream().filter(f -> f.getType() == DbFieldType.STRING)
+        			.collect(Collectors.toList());
+        
+        List<Predicate> queryPredicates = new ArrayList<>();
+        if (q != null) {
+	        for (DbField f : stringFields) {
+	        	Path path = root.get(f.getJavaName());
+	        	queryPredicates.add(cb.like(cb.lower(cb.toString(path)), "%" + q.toLowerCase() + "%"));
+	        }
+	        
+	        Predicate queryPredicate = cb.or(queryPredicates.toArray(new Predicate[queryPredicates.size()]));
+	        finalPredicates.add(queryPredicate);
+        }
+
+        
+        if (queryFilters == null) queryFilters = new HashSet<>();
+        for (QueryFilter filter  : queryFilters) {
+        	CompareOperator op = filter.getOp();
+        	String field = filter.getField();
+        	String v = filter.getValue();
+        	
+        	DbField dbField = schema.getFieldByJavaName(field);
+        	Object value = dbField.getType().parseValue(v);
+        	
+			if (op == CompareOperator.STRING_EQ) {
+				finalPredicates.add(cb.equal(cb.lower(cb.toString(root.get(field))), value.toString().toLowerCase()));
+			} else if (op == CompareOperator.CONTAINS) {
+				finalPredicates.add(
+					cb.like(cb.lower(cb.toString(root.get(field))), "%" + value.toString().toLowerCase() + "%")
+				);
+			} else if (op == CompareOperator.EQ) {
+				finalPredicates.add(
+					cb.equal(root.get(field), value)
+				);
+			} else if (op == CompareOperator.GT) {
+				finalPredicates.add(
+					cb.greaterThan(root.get(field), value.toString())
+				);
+			} else if (op == CompareOperator.LT) {
+				finalPredicates.add(
+					cb.lessThan(root.get(field), value.toString())
+				);
+			} else if (op == CompareOperator.AFTER) {
+				if (value instanceof LocalDate)
+					finalPredicates.add(
+						cb.greaterThan(root.get(field), (LocalDate)value)
+					);
+				else if (value instanceof LocalDateTime)
+					finalPredicates.add(
+						cb.greaterThan(root.get(field), (LocalDateTime)value)
+					);
+				
+			} else if (op == CompareOperator.BEFORE) {
+				if (value instanceof LocalDate)
+					finalPredicates.add(
+						cb.lessThan(root.get(field), (LocalDate)value)
+					);
+				else if (value instanceof LocalDateTime)
+					finalPredicates.add(
+						cb.lessThan(root.get(field), (LocalDateTime)value)
+					);
+				
+			}
+        }
+        return finalPredicates;
+	}
+
+	public void 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());
+
+		for (DbField field : schema.getSortedFields()) {
+			if (field.isPrimaryKey()) continue;
+			
+			String stringValue = params.get(field.getName());
+			Object value = null;
+			if (stringValue != null && stringValue.isBlank()) stringValue = null;
+			if (stringValue != null) {
+				value = field.getType().parseValue(stringValue);
+			} else {
+				try {
+					MultipartFile file = files.get(field.getJavaName());
+					if (file != null)
+						value = file.getBytes();
+				} catch (IOException e) {
+					throw new DbAdminException(e);
+				}
+			}
+			
+			update.set(employee.get(field.getJavaName()), value);
+		}
+		String pkName = schema.getPrimaryKey().getJavaName();
+		update.where(cb.equal(employee.get(pkName), params.get(schema.getPrimaryKey().getName())));
+
+		Query query = entityManager.createQuery(update);
+		int rowCount = query.executeUpdate();
+		
+	}
 }

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

@@ -3,10 +3,12 @@ package tech.ailef.dbadmin.dbmapping;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
 import java.util.Optional;
+import java.util.Set;
 import java.util.stream.Collectors;
 
 import org.springframework.data.domain.Page;
@@ -21,6 +23,7 @@ import org.springframework.web.multipart.MultipartFile;
 import jakarta.transaction.Transactional;
 import tech.ailef.dbadmin.dto.PaginatedResult;
 import tech.ailef.dbadmin.dto.PaginationInfo;
+import tech.ailef.dbadmin.dto.QueryFilter;
 import tech.ailef.dbadmin.exceptions.DbAdminException;
 import tech.ailef.dbadmin.exceptions.InvalidPageException;
 
@@ -63,8 +66,8 @@ public class DbAdminRepository {
 	 * @param query
 	 * @return
 	 */
-	public long count(DbObjectSchema schema, String query) {
-		return schema.getJpaRepository().count(query);
+	public long count(DbObjectSchema schema, String query, Set<QueryFilter> queryFilters) {
+		return schema.getJpaRepository().count(query, queryFilters);
 	}
 	
 	
@@ -116,7 +119,7 @@ public class DbAdminRepository {
 		
 		
 		return new PaginatedResult(
-			new PaginationInfo(page, maxPage, pageSize, maxElement),
+			new PaginationInfo(page, maxPage, pageSize, maxElement, null, sortKey, sortOrder, new HashSet<>()),
 			results
 		);
 	}
@@ -126,14 +129,18 @@ public class DbAdminRepository {
 	 * @param schema
 	 * @param params
 	 */
+	@Transactional
 	public void update(DbObjectSchema schema, Map<String, String> params, Map<String, MultipartFile> files) {
-		Object[] updateArray = schema.getUpdateArray(params, 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);
 		
-		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")
@@ -203,17 +210,6 @@ public class DbAdminRepository {
 			insert.execute(allValues);
 			return primaryKey;
 		}
-//		String fieldsString = 
-//			schema.getSortedFields().stream().skip(primaryKey == null ? 1 : 0).map(f -> "`" + f.getName() + "`").collect(Collectors.joining(", "));
-//		
-//		String placeholdersString =
-//			schema.getSortedFields().stream().skip(primaryKey == null ? 1 : 0).map(f -> "?").collect(Collectors.joining(", "));
-//		Object[] array = schema.getInsertArray(values, files);
-//		
-//		String query = "INSERT INTO " + schema.getTableName() + " (" + fieldsString + ") VALUES (" + placeholdersString + ");";
-//		jdbcTemplate.update(query, array);
-		
-//		return primaryKey;
 	}
 	
 	
@@ -223,10 +219,11 @@ public class DbAdminRepository {
 	 * @param query
 	 * @return
 	 */
-	public PaginatedResult search(DbObjectSchema schema, String query, int page, int pageSize, String sortKey, String sortOrder) {
+	public PaginatedResult search(DbObjectSchema schema, String query, int page, int pageSize, String sortKey, 
+			String sortOrder, Set<QueryFilter> queryFilters) {
 		AdvancedJpaRepository jpaRepository = schema.getJpaRepository();
         
-		long maxElement = count(schema, query);
+		long maxElement = count(schema, query, queryFilters);
 		int maxPage = (int)(Math.ceil ((double)maxElement / pageSize));
 		
 		if (page <= 0) page = 1;
@@ -235,8 +232,8 @@ public class DbAdminRepository {
 		}
 		
 		return new PaginatedResult(
-			new PaginationInfo(page, maxPage, pageSize, maxElement), 
-			jpaRepository.search(query, page, pageSize, sortKey, sortOrder).stream()
+			new PaginationInfo(page, maxPage, pageSize, maxElement, query, sortKey, sortOrder, queryFilters), 
+			jpaRepository.search(query, page, pageSize, sortKey, sortOrder, queryFilters).stream()
 				.map(o  -> new DbObject(o, schema))
 				.toList()
 		);
@@ -251,7 +248,7 @@ public class DbAdminRepository {
 	public List<DbObject> search(DbObjectSchema schema, String query) {
 		AdvancedJpaRepository jpaRepository = schema.getJpaRepository();
 		
-		return jpaRepository.search(query, 1, 50, null, null).stream()
+		return jpaRepository.search(query, 1, 50, null, null, null).stream()
 					.map(o  -> new DbObject(o, schema))
 					.toList();
 	}

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

@@ -4,12 +4,14 @@ import java.io.IOException;
 import java.math.BigDecimal;
 import java.time.LocalDate;
 import java.time.LocalDateTime;
+import java.util.List;
 
 import org.springframework.web.multipart.MultipartFile;
 
 import jakarta.persistence.ManyToMany;
 import jakarta.persistence.OneToMany;
 import jakarta.persistence.OneToOne;
+import tech.ailef.dbadmin.dto.CompareOperator;
 import tech.ailef.dbadmin.exceptions.DbAdminException;
 
 public enum DbFieldType {
@@ -29,6 +31,11 @@ public enum DbFieldType {
 		public Class<?> getJavaClass() {
 			return Integer.class;
 		}
+
+		@Override
+		public List<CompareOperator> getCompareOperators() {
+			return List.of(CompareOperator.GT, CompareOperator.EQ, CompareOperator.LT);
+		}
 	},
 	DOUBLE {
 		@Override
@@ -45,6 +52,11 @@ public enum DbFieldType {
 		public Class<?> getJavaClass() {
 			return Double.class;
 		}
+		
+		@Override
+		public List<CompareOperator> getCompareOperators() {
+			return List.of(CompareOperator.GT, CompareOperator.EQ, CompareOperator.LT);
+		}
 	},
 	LONG {
 		@Override
@@ -61,6 +73,11 @@ public enum DbFieldType {
 		public Class<?> getJavaClass() {
 			return Long.class;
 		}
+		
+		@Override
+		public List<CompareOperator> getCompareOperators() {
+			return List.of(CompareOperator.GT, CompareOperator.EQ, CompareOperator.LT);
+		}
 	},
 	FLOAT {
 		@Override
@@ -77,6 +94,11 @@ public enum DbFieldType {
 		public Class<?> getJavaClass() {
 			return Float.class;
 		}
+		
+		@Override
+		public List<CompareOperator> getCompareOperators() {
+			return List.of(CompareOperator.GT, CompareOperator.EQ, CompareOperator.LT);
+		}
 	},
 	LOCAL_DATE {
 		@Override
@@ -93,6 +115,11 @@ public enum DbFieldType {
 		public Class<?> getJavaClass() {
 			return Float.class;
 		}
+		
+		@Override
+		public List<CompareOperator> getCompareOperators() {
+			return List.of(CompareOperator.AFTER, CompareOperator.STRING_EQ, CompareOperator.BEFORE);
+		}
 	},
 	LOCAL_DATE_TIME {
 		@Override
@@ -109,6 +136,11 @@ public enum DbFieldType {
 		public Class<?> getJavaClass() {
 			return LocalDateTime.class;
 		}
+		
+		@Override
+		public List<CompareOperator> getCompareOperators() {
+			return List.of(CompareOperator.AFTER, CompareOperator.STRING_EQ, CompareOperator.BEFORE);
+		}
 	},
 	STRING {
 		@Override
@@ -125,6 +157,11 @@ public enum DbFieldType {
 		public Class<?> getJavaClass() {
 			return String.class;
 		}
+		
+		@Override
+		public List<CompareOperator> getCompareOperators() {
+			return List.of(CompareOperator.CONTAINS, CompareOperator.STRING_EQ);
+		}
 	},
 	BOOLEAN {
 		@Override
@@ -141,6 +178,11 @@ public enum DbFieldType {
 		public Class<?> getJavaClass() {
 			return Boolean.class;
 		}
+		
+		@Override
+		public List<CompareOperator> getCompareOperators() {
+			return List.of(CompareOperator.EQ);
+		}
 	}, 
 	BIG_DECIMAL {
 		@Override
@@ -157,6 +199,11 @@ public enum DbFieldType {
 		public Class<?> getJavaClass() {
 			return BigDecimal.class;
 		}
+		
+		@Override
+		public List<CompareOperator> getCompareOperators() {
+			return List.of(CompareOperator.GT, CompareOperator.EQ, CompareOperator.LT);
+		}
 	}, 
 	BYTE_ARRAY {
 		@Override
@@ -178,6 +225,10 @@ public enum DbFieldType {
 			return byte[].class;
 		}
 		
+		@Override
+		public List<CompareOperator> getCompareOperators() {
+			throw new DbAdminException("Binary fields are not comparable");
+		}
 	},
 	ONE_TO_MANY {
 		@Override
@@ -204,6 +255,11 @@ public enum DbFieldType {
 		public String toString() {
 			return "One to Many";
 		}
+		
+		@Override
+		public List<CompareOperator> getCompareOperators() {
+			throw new DbAdminException();
+		}
 	},
 	ONE_TO_ONE {
 		@Override
@@ -230,6 +286,11 @@ public enum DbFieldType {
 		public String toString() {
 			return "One to One";
 		}
+		
+		@Override
+		public List<CompareOperator> getCompareOperators() {
+			throw new DbAdminException();
+		}
 	},
 	MANY_TO_MANY {
 		@Override
@@ -256,6 +317,11 @@ public enum DbFieldType {
 		public String toString() {
 			return "Many to Many";
 		}
+		
+		@Override
+		public List<CompareOperator> getCompareOperators() {
+			throw new DbAdminException();
+		}
 	}, 
 	COMPUTED {
 		@Override
@@ -272,6 +338,11 @@ public enum DbFieldType {
 		public Class<?> getJavaClass() {
 			throw new UnsupportedOperationException();
 		}
+		
+		@Override
+		public List<CompareOperator> getCompareOperators() {
+			throw new DbAdminException();
+		}
 	};
 
 	public abstract String getHTMLName();
@@ -280,6 +351,8 @@ public enum DbFieldType {
 	
 	public abstract Class<?> getJavaClass();
 	
+	public abstract List<CompareOperator> getCompareOperators();
+	
 	public boolean isRelationship() {
 		return false;
 	}

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

@@ -17,8 +17,13 @@ public class DbFieldValue {
 	}
 	
 	public String getFormattedValue() {
-		if (field.getFormat() == null) return value == null ? "NULL" : value.toString();
-		return String.format(field.getFormat(), value);
+		if (value == null) return null;
+		
+		if (field.getFormat() == null) {
+			return value.toString();
+		} else {
+			return String.format(field.getFormat(), value);
+		}
 	}
 
 	public DbField getField() {

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

@@ -199,8 +199,13 @@ public class DbObject {
 		String capitalize = Character.toUpperCase(fieldName.charAt(0)) + fieldName.substring(1);
 		Method[] methods = instance.getClass().getDeclaredMethods();
 		
+		String prefix = "get";
+		if (schema.getFieldByJavaName(fieldName).getType() == DbFieldType.BOOLEAN) {
+			prefix = "is";
+		}
+		
 		for (Method m : methods) {
-			if (m.getName().equals("get" + capitalize))
+			if (m.getName().equals(prefix + capitalize))
 				return m;
 		}
 		

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

@@ -10,8 +10,6 @@ import java.util.Map;
 import java.util.Optional;
 import java.util.stream.Collectors;
 
-import org.springframework.web.multipart.MultipartFile;
-
 import com.fasterxml.jackson.annotation.JsonIgnore;
 
 import jakarta.persistence.ManyToMany;
@@ -19,6 +17,7 @@ import jakarta.persistence.OneToMany;
 import jakarta.persistence.Table;
 import tech.ailef.dbadmin.DbAdmin;
 import tech.ailef.dbadmin.annotations.ComputedColumn;
+import tech.ailef.dbadmin.annotations.Filterable;
 import tech.ailef.dbadmin.exceptions.DbAdminException;
 import tech.ailef.dbadmin.misc.Utils;
 
@@ -173,98 +172,14 @@ public class DbObjectSchema {
 	public Method getComputedColumn(String name) {
 		return computedColumns.get(name);
 	}
-
-	public Object[] getInsertArray(Map<String, String> params, Map<String, MultipartFile> files) {
-		int currentIndex = 0;
-		
-		String pkValue = params.get(getPrimaryKey().getName());
-		if (pkValue == null || pkValue.isBlank())
-			pkValue = null;
-		
-		Object[] row; 
-		if (pkValue == null) {
-			row = new Object[getSortedFields().size() - 1];
-		} else {
-			row = new Object[getSortedFields().size()];
-		}
-		
-		for (DbField field : getSortedFields()) {
-			// Skip the primary key if the value is null
-			// If it is autogenerated, it will be filled by the database
-			// otherwise it will throw an error
-			if (field.isPrimaryKey() && pkValue == null) {
-				continue;
-			}
-			
-			String name = field.getName();
-			
-			String stringValue = params.get(name);
-			Object value = null;
-			if (stringValue != null && stringValue.isBlank()) stringValue = null;
-			if (stringValue != null) {
-				value = stringValue;
-			} else {
-				value = files.get(name);
-			}
-			
-			String type = params.get("__dbadmin_" + name + "_type");
-			
-			if (type == null)
-				throw new RuntimeException("Missing type hidden field for: " + name);
-			
-			try {
-				if (value == null)
-					row[currentIndex++] = null;
-				else
-					row[currentIndex++] = DbFieldType.valueOf(type).parseValue(value);
-			} catch (IllegalArgumentException | SecurityException e) {
-				e.printStackTrace();
-			}
-		}
-		
-		return row;
-	}
 	
-	public Object[] getUpdateArray(Map<String, String> params, Map<String, MultipartFile> files) {
-		Object[] row = new Object[getSortedFields().size() + 1];
-		
-		int currentIndex = 0;
-		DbField primaryKey = getPrimaryKey();
-		String pkValue = params.get(primaryKey.getName());
-		
-		for (DbField field : getSortedFields()) {
-			String name = field.getName();
-			
-			String stringValue = params.get(name);
-			Object value = null;
-			if (stringValue != null && stringValue.isBlank()) stringValue = null;
-			if (stringValue != null) {
-				value = stringValue;
-			} else {
-				value = files.get(name);
-			}
-			
-			String type = params.get("__dbadmin_" + name + "_type");
-			
-			if (type == null)
-				throw new RuntimeException("Missing type hidden field for: " + name);
-			
-			try {
-				if (value == null)
-					row[currentIndex++] = null;
-				else
-					row[currentIndex++] = DbFieldType.valueOf(type).parseValue(value);
-			} catch (IllegalArgumentException | SecurityException e) {
-				e.printStackTrace();
-			}
-		}
-		
-		row[currentIndex] = primaryKey.getType().parseValue(pkValue);
-		
-		return row;
+	public List<DbField> getFilterableFields() {
+		return getSortedFields().stream().filter(f -> { 
+			return !f.isBinary() && !f.isPrimaryKey()
+					&& f.getPrimitiveField().getAnnotation(Filterable.class) != null;
+		}).toList();
 	}
 
-
 	@Override
 	public String toString() {
 		return "DbObjectSchema [fields=" + fields + ", className=" + entityClass.getName() + "]";

src/main/java/tech/ailef/dbadmin/dto/CompareOperator.java

@@ -0,0 +1,52 @@
+package tech.ailef.dbadmin.dto;
+
+public enum CompareOperator {
+	GT {
+		@Override
+		public String getDisplayName() {
+			return "Greater than";
+		}
+	},
+	LT {
+		@Override
+		public String getDisplayName() {
+			return "Less than";
+		}
+	},
+	EQ {
+		@Override
+		public String getDisplayName() {
+			return "Equals";
+		}
+	},
+	STRING_EQ {
+		@Override
+		public String getDisplayName() {
+			return "Equals";
+		}
+	},
+	BEFORE {
+		@Override
+		public String getDisplayName() {
+			return "Before";
+		}
+	},
+	AFTER {
+		@Override
+		public String getDisplayName() {
+			return "After";
+		}
+	},
+	CONTAINS {
+		@Override
+		public String getDisplayName() {
+			return "Contains";
+		}
+	};
+	
+	public abstract String getDisplayName();
+	
+	public String toString() {
+		return this.name().toLowerCase();
+	}
+}

src/main/java/tech/ailef/dbadmin/dto/ListModelRequest.java

@@ -0,0 +1,37 @@
+//package tech.ailef.dbadmin.dto;
+//
+//import java.util.Set;
+//
+//public class ListModelRequest {
+//	private String className;
+//	 
+//	private String query;
+//	 
+//	private Integer page;
+//		
+//	private Integer pageSize;
+//		
+//	private String sortKey; 
+//		
+//	private String sortOrder;
+//	
+//	private Set<QueryFilter> queryFilters;
+//	
+//	private PaginationInfo paginationInfo;
+//
+//	public ListModelRequest(String className, String query, Integer page, Integer pageSize, String sortKey,
+//			String sortOrder, Set<QueryFilter> queryFilters, PaginationInfo paginationInfo) {
+//		super();
+//		this.className = className;
+//		this.query = query;
+//		this.page = page;
+//		this.pageSize = pageSize;
+//		this.sortKey = sortKey;
+//		this.sortOrder = sortOrder;
+//		this.queryFilters = queryFilters;
+//		this.paginationInfo = paginationInfo;
+//	}
+//	
+//	
+////	@RequestParam MultiValueMap<String, String> otherParams,
+//}

src/main/java/tech/ailef/dbadmin/dto/PaginationInfo.java

@@ -1,9 +1,15 @@
 package tech.ailef.dbadmin.dto;
 
+import java.util.ArrayList;
 import java.util.List;
+import java.util.Set;
 import java.util.stream.Collectors;
 import java.util.stream.IntStream;
 
+import org.springframework.util.MultiValueMap;
+
+import tech.ailef.dbadmin.misc.Utils;
+
 /**
  * Attached as output to requests that have a paginated response,
  * holds information about the current pagination.
@@ -30,12 +36,25 @@ public class PaginationInfo {
 	private int pageSize;
 	
 	private long maxElement;
+	
+	private Set<QueryFilter> queryFilters;
+	
+	private String query;
+	
+	private String sortKey;
+	
+	private String sortOrder;
 
-	public PaginationInfo(int currentPage, int maxPage, int pageSize, long maxElement) {
+	public PaginationInfo(int currentPage, int maxPage, int pageSize, long maxElement, String query, 
+			String sortKey, String sortOrder, Set<QueryFilter> queryFilters) {
 		this.currentPage = currentPage;
 		this.maxPage = maxPage;
 		this.pageSize = pageSize;
+		this.query = query;
 		this.maxElement = maxElement;
+		this.queryFilters = queryFilters;
+		this.sortKey = sortKey;
+		this.sortOrder = sortOrder;
 	}
 
 	public int getCurrentPage() {
@@ -65,6 +84,36 @@ public class PaginationInfo {
 	public long getMaxElement() {
 		return maxElement;
 	}
+	
+	public String getSortedPageLink(String sortKey, String sortOrder) {
+		MultiValueMap<String, String> params = Utils.computeParams(queryFilters);
+		
+		if (query != null) {
+			params.put("query", new ArrayList<>());
+			params.get("query").add(query);
+		}
+		
+		params.add("pageSize", "" + pageSize);
+		params.add("page", "" + currentPage);
+		params.add("sortKey", sortKey);
+		params.add("sortOrder", sortOrder);
+		
+		return Utils.getQueryString(params);
+	}
+	
+	public String getLink(int page) {
+		MultiValueMap<String, String> params = Utils.computeParams(queryFilters);
+		
+		if (query != null) {
+			params.put("query", new ArrayList<>());
+			params.get("query").add(query);
+		}
+		
+		params.add("pageSize", "" + pageSize);
+		params.add("page", "" + page);
+		
+		return Utils.getQueryString(params);
+	}
 
 	public List<Integer> getBeforePages() {
 		return IntStream.range(Math.max(currentPage - PAGE_RANGE,  1), currentPage).boxed().collect(Collectors.toList());

src/main/java/tech/ailef/dbadmin/dto/QueryFilter.java

@@ -0,0 +1,57 @@
+package tech.ailef.dbadmin.dto;
+
+import java.util.Objects;
+
+public class QueryFilter {
+	private String field;
+	
+	private CompareOperator op;
+	
+	private String value;
+	
+	public QueryFilter(String field, CompareOperator op, String value) {
+		this.field = field;
+		this.op = op;
+		this.value = value;
+	}
+
+	public String getField() {
+		return field;
+	}
+
+	public CompareOperator getOp() {
+		return op;
+	}
+
+	public String getValue() {
+		return value;
+	}
+
+	@Override
+	public int hashCode() {
+		return Objects.hash(field, op, value);
+	}
+
+	@Override
+	public String toString() {
+		String displayValue = value;
+		if (value.length() > 10) {
+			displayValue = value.substring(0, 4) + "..." + value.substring(value.length() - 4);
+		}
+		return "'" + field + "' " + op.getDisplayName() + " '" + displayValue + "'";
+	}
+	
+	@Override
+	public boolean equals(Object obj) {
+		if (this == obj)
+			return true;
+		if (obj == null)
+			return false;
+		if (getClass() != obj.getClass())
+			return false;
+		QueryFilter other = (QueryFilter) obj;
+		return Objects.equals(field, other.field) && Objects.equals(op, other.op) && Objects.equals(value, other.value);
+	}
+	
+	
+}

src/main/java/tech/ailef/dbadmin/misc/Utils.java

@@ -1,5 +1,17 @@
 package tech.ailef.dbadmin.misc;
 
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+import org.springframework.util.LinkedMultiValueMap;
+import org.springframework.util.MultiValueMap;
+
+import tech.ailef.dbadmin.dto.CompareOperator;
+import tech.ailef.dbadmin.dto.QueryFilter;
+import tech.ailef.dbadmin.exceptions.DbAdminException;
+
 public interface Utils {
 	public static String camelToSnake(String v) {
 		if (Character.isUpperCase(v.charAt(0))) {
@@ -10,6 +22,66 @@ public interface Utils {
 		
 	}
 	
+	public static MultiValueMap<String, String> computeParams(Set<QueryFilter> filters) {
+		MultiValueMap<String, String> r = new LinkedMultiValueMap<>();
+		
+		r.put("filter_field", new ArrayList<>());
+		r.put("filter_op", new ArrayList<>());
+		r.put("filter_value", new ArrayList<>());
+		
+		for (QueryFilter filter : filters) {
+			r.get("filter_field").add(filter.getField());
+			r.get("filter_op").add(filter.getOp().toString());
+			r.get("filter_value").add(filter.getValue());
+		}
+			
+		return r;
+	}
+	
+	public static Set<QueryFilter> computeFilters(MultiValueMap<String, String> params) {
+		if (params == null)
+			return new HashSet<>();
+
+        List<String> ops = params.get("filter_op");
+		List<String> fields = params.get("filter_field");
+		List<String> values = params.get("filter_value");
+
+		if (ops == null || fields == null || values == null)
+			return new HashSet<>();
+		
+		if (ops.size() != fields.size() || fields.size() != values.size()
+			|| ops.size() != values.size()) {
+			throw new DbAdminException("Filtering parameters must have the same size");
+		}
+
+		Set<QueryFilter> filters = new HashSet<>();
+		for (int i = 0; i < ops.size(); i++) {
+			String op = ops.get(i);
+			String field = fields.get(i);
+			String value = values.get(i);
+			
+			QueryFilter queryFilter = new QueryFilter(field, CompareOperator.valueOf(op.toUpperCase()), value);
+			filters.add(queryFilter);
+		}
+		
+		return filters;
+			
+	}
+
+	
+	public static String getQueryString(MultiValueMap<String, String> params) {
+		Set<String> currentParams = params.keySet();
+		List<String> paramValues = new ArrayList<>();
+		for (String param : currentParams) {
+			for (String v : params.get(param)) {
+				paramValues.add(param + "=" + v.trim());
+			}
+		}
+		
+		if (paramValues.isEmpty()) return "";
+		return "?" + String.join("&", paramValues);
+	}
+	
 	public static String snakeToCamel(String text) {
 		boolean shouldConvertNextCharToLower = true;
 		StringBuilder builder = new StringBuilder();