org.primefaces.metadata.BeanValidationComponentMetadataTransformer Maven / Gradle / Ivy
/*
* Copyright 2009-2014 PrimeTek.
*
* 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
*
* http://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.primefaces.metadata;
import java.io.IOException;
import java.lang.annotation.Annotation;
import java.util.Set;
import javax.faces.component.EditableValueHolder;
import javax.faces.component.UIComponent;
import javax.faces.component.UIInput;
import javax.faces.context.FacesContext;
import javax.validation.constraints.Max;
import javax.validation.constraints.Min;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;
import javax.validation.metadata.ConstraintDescriptor;
import org.primefaces.context.RequestContext;
public class BeanValidationComponentMetadataTransformer extends ComponentMetadataTransformer {
private static final BeanValidationComponentMetadataTransformer INSTANCE = new BeanValidationComponentMetadataTransformer();
public static BeanValidationComponentMetadataTransformer getInstance() {
return INSTANCE;
}
public void transform(FacesContext context, RequestContext requestContext, UIComponent component) throws IOException {
if (!(component instanceof EditableValueHolder) || !(component instanceof UIInput)) {
return;
}
UIInput input = (UIInput) component;
EditableValueHolder editableValueHolder = (EditableValueHolder) component;
if (editableValueHolder.isRequired() && isMaxlenghtSet(input)) {
return;
}
Set> constraints = BeanValidationMetadataExtractor.extract(context, requestContext, component.getValueExpression("value"));
if (constraints != null && !constraints.isEmpty()) {
for (ConstraintDescriptor constraintDescriptor : constraints) {
applyConstraint(constraintDescriptor, input, editableValueHolder);
}
}
}
protected void applyConstraint(ConstraintDescriptor constraintDescriptor, UIInput input, EditableValueHolder editableValueHolder) {
Annotation constraint = constraintDescriptor.getAnnotation();
if (!isMaxlenghtSet(input)) {
if (constraint.annotationType().equals(Max.class)) {
Max max = (Max) constraint;
if (max.value() > 0) {
setMaxlength(input, Long.valueOf(max.value()).intValue());
}
}
else if (constraint.annotationType().equals(Size.class)) {
Size size = (Size) constraint;
if (size.max() > 0) {
setMaxlength(input, size.max());
}
}
}
if (!editableValueHolder.isRequired()) {
if (constraint.annotationType().equals(Min.class)) {
Min min = (Min) constraint;
if (min.value() > 0) {
editableValueHolder.setRequired(true);
}
}
else if (constraint.annotationType().equals(Size.class)) {
Size size = (Size) constraint;
if (size.min() > 0) {
editableValueHolder.setRequired(true);
}
}
else if (constraint.annotationType().equals(NotNull.class)) {
editableValueHolder.setRequired(true);
}
}
}
}