org.apache.bval.jsr303.ElementDescriptorImpl Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with this
* work for additional information regarding copyright ownership. The ASF
* licenses this file to you 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.apache.bval.jsr303;
import javax.validation.metadata.ConstraintDescriptor;
import javax.validation.metadata.ElementDescriptor;
import org.apache.bval.model.MetaBean;
import org.apache.bval.model.Validation;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
/**
* Description: MetaData class
*/
public abstract class ElementDescriptorImpl implements ElementDescriptor {
/**
* Get a set of {@link ConstraintDescriptor}s from the specified array of
* {@link Validation}s.
*
* @param validations
* @return {@link ConstraintDescriptor} set
*/
protected static Set> getConstraintDescriptors(Validation[] validations) {
final Set> result = new HashSet>(validations.length);
for (Validation validation : validations) {
if (validation instanceof ConstraintValidation) {
result.add((ConstraintValidation) validation);
}
}
return result;
}
/** the MetaBean of this element */
protected final MetaBean metaBean;
/** the raw type of this element */
protected final Class elementClass;
private Set> constraintDescriptors;
/**
* Create a new ElementDescriptorImpl instance.
*
* @param metaBean
* @param elementClass
* @param validations
*/
protected ElementDescriptorImpl(MetaBean metaBean, Class elementClass, Validation[] validations) {
this.metaBean = metaBean;
this.elementClass = elementClass;
setConstraintDescriptors(getConstraintDescriptors(validations));
}
/**
* Create a new ElementDescriptorImpl instance.
*
* @param elementClass
* @param validations
*/
protected ElementDescriptorImpl(Class elementClass, Validation[] validations) {
this(null, elementClass, validations);
}
/**
* {@inheritDoc}
*
* @return Statically defined returned type.
*/
public Class getElementClass() {
return elementClass;
}
/**
* {@inheritDoc}
*/
@SuppressWarnings("unchecked")
public ElementDescriptor.ConstraintFinder findConstraints() {
return new ConstraintFinderImpl(metaBean, new HashSet((Set) constraintDescriptors));
}
/**
* {@inheritDoc}
*/
public Set> getConstraintDescriptors() {
return constraintDescriptors.isEmpty() ? Collections.> emptySet() : Collections
.unmodifiableSet(constraintDescriptors);
}
/**
* Get the mutable {@link ConstraintDescriptor} {@link Set}.
*
* @return Set of {@link ConstraintDescriptor}
*/
protected Set> getMutableConstraintDescriptors() {
return constraintDescriptors;
}
/**
* {@inheritDoc} return true if at least one constraint declaration is
* present on the element.
*/
public boolean hasConstraints() {
return !getConstraintDescriptors().isEmpty();
}
/**
* Set the constraintDescriptors for this element.
*
* @param constraintDescriptors
* to set
*/
public void setConstraintDescriptors(Set> constraintDescriptors) {
this.constraintDescriptors = constraintDescriptors;
}
/**
* Get the model {@link MetaBean} used.
*
* @return MetaBean
*/
public MetaBean getMetaBean() {
return metaBean;
}
}