org.springframework.batch.item.validator.ValidatingItemProcessor Maven / Gradle / Ivy
/*
* Copyright 2006-2007 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
*
* 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.springframework.batch.item.validator;
import org.springframework.batch.item.ItemProcessor;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.util.Assert;
/**
* Simple implementation of {@link ItemProcessor} that validates input and
* returns it without modifications. Should the given {@link Validator} throw a
* {@link ValidationException} this processor will re-throw it to indicate the
* item should be skipped, unless {@link #setFilter(boolean)} is set to
* true
, in which case null
will be returned to
* indicate the item should be filtered.
*
* @author Robert Kasanicky
*/
public class ValidatingItemProcessor implements ItemProcessor, InitializingBean {
private Validator validator;
private boolean filter = false;
/**
* Default constructor
*/
public ValidatingItemProcessor() {
}
/**
* Creates a ValidatingItemProcessor based on the given Validator.
*/
public ValidatingItemProcessor(Validator validator) {
this.validator = validator;
}
/**
* Set the validator used to validate each item.
*
* @param validator
*/
public void setValidator(Validator validator) {
this.validator = validator;
}
/**
* Should the processor filter invalid records instead of skipping them?
*
* @param filter
*/
public void setFilter(boolean filter) {
this.filter = filter;
}
/**
* Validate the item and return it unmodified
*
* @return the input item
* @throws ValidationException if validation fails
*/
public T process(T item) throws ValidationException {
try {
validator.validate(item);
}
catch (ValidationException e) {
if (filter) {
return null; // filter the item
}
else {
throw e; // skip the item
}
}
return item;
}
public void afterPropertiesSet() throws Exception {
Assert.notNull(validator, "Validator must not be null.");
}
}