Java tutorial
/* * 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 net.firejack.platform.core.validation; import net.firejack.platform.core.utils.MessageResolver; import net.firejack.platform.core.validation.annotation.NotNull; import net.firejack.platform.core.validation.annotation.ValidationMode; import net.firejack.platform.core.validation.constraint.vo.Constraint; import net.firejack.platform.core.validation.exception.RuleValidationException; import org.apache.commons.lang.StringUtils; import org.springframework.stereotype.Component; import java.lang.annotation.Annotation; import java.lang.reflect.Method; import java.util.ArrayList; import java.util.List; import java.util.Locale; import java.util.Map; @Component public class NotNullProcessor implements IMessageRuleProcessor { public List<ValidationMessage> validate(Method readMethod, String property, Object value, ValidationMode mode) throws RuleValidationException { List<ValidationMessage> validationMessages = new ArrayList<ValidationMessage>(); NotNull validateNull = readMethod.getAnnotation(NotNull.class); if (validateNull != null && value == null && !(mode == ValidationMode.CREATE && validateNull.autoGeneratedField())) { String parameterName = StringUtils.isNotBlank(validateNull.parameterName()) ? validateNull.parameterName() : property; validationMessages.add(new ValidationMessage(property, validateNull.msgKey(), parameterName)); } return validationMessages; } @Override public List<Constraint> generate(Method readMethod, String property, Map<String, String> params) { List<Constraint> constraints = null; Annotation annotation = readMethod.getAnnotation(NotNull.class); if (annotation != null) { NotNull notNull = (NotNull) annotation; Constraint constraint = new Constraint(notNull.annotationType().getSimpleName()); String errorMessage = MessageResolver.messageFormatting(notNull.msgKey(), Locale.ENGLISH, property); //TODO need to set real locale constraint.setErrorMessage(errorMessage); constraints = new ArrayList<Constraint>(); constraints.add(constraint); } return constraints; } }