org.springframework.validation.BindingResult Maven / Gradle / Ivy
/*
* Copyright 2002-2018 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.validation;
import java.beans.PropertyEditor;
import java.util.Map;
import org.springframework.beans.PropertyEditorRegistry;
import org.springframework.lang.Nullable;
/**
* General interface that represents binding results. Extends the
* {@link Errors interface} for error registration capabilities,
* allowing for a {@link Validator} to be applied, and adds
* binding-specific analysis and model building.
*
* Serves as result holder for a {@link DataBinder}, obtained via
* the {@link DataBinder#getBindingResult()} method. BindingResult
* implementations can also be used directly, for example to invoke
* a {@link Validator} on it (e.g. as part of a unit test).
*
* @author Juergen Hoeller
* @since 2.0
* @see DataBinder
* @see Errors
* @see Validator
* @see BeanPropertyBindingResult
* @see DirectFieldBindingResult
* @see MapBindingResult
*/
public interface BindingResult extends Errors {
/**
* Prefix for the name of the BindingResult instance in a model,
* followed by the object name.
*/
String MODEL_KEY_PREFIX = BindingResult.class.getName() + ".";
/**
* Return the wrapped target object, which may be a bean, an object with
* public fields, a Map - depending on the concrete binding strategy.
*/
@Nullable
Object getTarget();
/**
* Return a model Map for the obtained state, exposing a BindingResult
* instance as '{@link #MODEL_KEY_PREFIX MODEL_KEY_PREFIX} + objectName'
* and the object itself as 'objectName'.
*
Note that the Map is constructed every time you're calling this method.
* Adding things to the map and then re-calling this method will not work.
*
The attributes in the model Map returned by this method are usually
* included in the {@link org.springframework.web.servlet.ModelAndView}
* for a form view that uses Spring's {@code bind} tag in a JSP,
* which needs access to the BindingResult instance. Spring's pre-built
* form controllers will do this for you when rendering a form view.
* When building the ModelAndView instance yourself, you need to include
* the attributes from the model Map returned by this method.
* @see #getObjectName()
* @see #MODEL_KEY_PREFIX
* @see org.springframework.web.servlet.ModelAndView
* @see org.springframework.web.servlet.tags.BindTag
*/
Map getModel();
/**
* Extract the raw field value for the given field.
* Typically used for comparison purposes.
* @param field the field to check
* @return the current value of the field in its raw form, or {@code null} if not known
*/
@Nullable
Object getRawFieldValue(String field);
/**
* Find a custom property editor for the given type and property.
* @param field the path of the property (name or nested path), or
* {@code null} if looking for an editor for all properties of the given type
* @param valueType the type of the property (can be {@code null} if a property
* is given but should be specified in any case for consistency checking)
* @return the registered editor, or {@code null} if none
*/
@Nullable
PropertyEditor findEditor(@Nullable String field, @Nullable Class valueType);
/**
* Return the underlying PropertyEditorRegistry.
* @return the PropertyEditorRegistry, or {@code null} if none
* available for this BindingResult
*/
@Nullable
PropertyEditorRegistry getPropertyEditorRegistry();
/**
* Resolve the given error code into message codes.
* Calls the configured {@link MessageCodesResolver} with appropriate parameters.
* @param errorCode the error code to resolve into message codes
* @return the resolved message codes
*/
String[] resolveMessageCodes(String errorCode);
/**
* Resolve the given error code into message codes for the given field.
*
Calls the configured {@link MessageCodesResolver} with appropriate parameters.
* @param errorCode the error code to resolve into message codes
* @param field the field to resolve message codes for
* @return the resolved message codes
*/
String[] resolveMessageCodes(String errorCode, String field);
/**
* Add a custom {@link ObjectError} or {@link FieldError} to the errors list.
*
Intended to be used by cooperating strategies such as {@link BindingErrorProcessor}.
* @see ObjectError
* @see FieldError
* @see BindingErrorProcessor
*/
void addError(ObjectError error);
/**
* Record the given value for the specified field.
*
To be used when a target object cannot be constructed, making
* the original field values available through {@link #getFieldValue}.
* In case of a registered error, the rejected value will be exposed
* for each affected field.
* @param field the field to record the value for
* @param type the type of the field
* @param value the original value
* @since 5.0.4
*/
default void recordFieldValue(String field, Class type, @Nullable Object value) {
}
/**
* Mark the specified disallowed field as suppressed.
*
The data binder invokes this for each field value that was
* detected to target a disallowed field.
* @see DataBinder#setAllowedFields
*/
default void recordSuppressedField(String field) {
}
/**
* Return the list of fields that were suppressed during the bind process.
*
Can be used to determine whether any field values were targeting
* disallowed fields.
* @see DataBinder#setAllowedFields
*/
default String[] getSuppressedFields() {
return new String[0];
}
}