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/*
* 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.dubbo.metadata.rest.springmvc;
import org.apache.dubbo.common.utils.AnnotationUtils;
import org.apache.dubbo.metadata.rest.AbstractAnnotatedMethodParameterProcessor;
import org.apache.dubbo.metadata.rest.AnnotatedMethodParameterProcessor;
import java.lang.annotation.Annotation;
import java.lang.reflect.Parameter;
import java.util.Objects;
import static org.apache.dubbo.common.utils.AnnotationUtils.getAttribute;
/**
* The abstract {@link AnnotatedMethodParameterProcessor} implementation for Spring Web MVC's @Request*
*/
public abstract class AbstractRequestAnnotationParameterProcessor extends AbstractAnnotatedMethodParameterProcessor {
@Override
protected String getAnnotationValue(Annotation annotation, Parameter parameter, int parameterIndex) {
// try to get "value" attribute first
String name = super.getAnnotationValue(annotation, parameter, parameterIndex);
// try to get "name" attribute if required
if (isEmpty(name)) {
name = getAttribute(annotation, "name");
}
// finally , try to the name of parameter
if (isEmpty(name)) {
name = parameter.getName();
}
return name;
}
@Override
protected String getDefaultValue(Annotation annotation, Parameter parameter, int parameterIndex) {
String attributeName = "defaultValue";
String attributeValue = getAttribute(annotation, attributeName);
if (isEmpty(attributeValue) || isDefaultValue(annotation, attributeName, attributeValue)) {
attributeValue = super.getDefaultValue(annotation, parameter, parameterIndex);
}
return attributeValue;
}
private boolean isDefaultValue(Annotation annotation, String attributeName, Object attributeValue) {
String defaultValue = AnnotationUtils.getDefaultValue(annotation, attributeName);
return Objects.deepEquals(attributeValue, defaultValue);
}
protected boolean isEmpty(String str) {
return str == null || str.isEmpty();
}
}