rest api for label and hibernate mapping

wise-webapp/src/main/java/com/wisemapping/validator/LabelValidator.java

@@ -0,0 +1,32 @@
+package com.wisemapping.validator;
+
+import com.wisemapping.model.Label;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import org.springframework.validation.Errors;
+import org.springframework.validation.ValidationUtils;
+import org.springframework.validation.Validator;
+
+public class LabelValidator implements Validator {
+    @Override
+    public boolean supports(Class<?> clazz) {
+        return clazz.equals(Label.class);
+    }
+
+    @Override
+    public void validate(@Nullable final Object target, @NotNull final Errors errors) {
+        final Label label = (Label) target;
+        if (label == null) {
+            errors.rejectValue("map", "error.not-specified", null, "Value required.");
+        } else {
+            validateLabel(label, errors);
+
+        }
+    }
+
+    private void validateLabel(@NotNull final Label label, @NotNull final Errors errors) {
+        ValidationUtils.rejectIfEmptyOrWhitespace(errors, "title", Messages.FIELD_REQUIRED);
+        String title = label.getTitle();
+        //todo hacer otras validaciones como si supera el maximo o el label existe
+    }
+}