org.kie.server.controller.validate.NotDuplicateValidStringsValidator Maven / Gradle / Ivy
/*
* Copyright 2017 Red Hat, Inc. and/or its affiliates.
*
* 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.kie.server.controller.validate;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
public class NotDuplicateValidStringsValidator implements ConstraintValidator> {
private Set possibleValues;
@Override
public void initialize(NotDuplicateValidStrings constraintAnnotation) {
this.possibleValues = new HashSet<>(Arrays.asList(constraintAnnotation.admittedValues()));
}
@Override
public boolean isValid(List values, ConstraintValidatorContext context) {
if ( values == null ) {
return true;
}
if ( values.isEmpty() ) {
return false;
}
HashSet oldValues = new HashSet<>();
for (String value : values) {
// not null
if (value == null) {
return false;
}
// no duplicates
if (oldValues.contains(value)) {
return false;
}
// not valid
if (!possibleValues.contains(value)) {
return false;
}
oldValues.add(value);
}
return true;
}
}