/**
* Copyright © 2006-2016 Web Cohesion (info@webcohesion.com)
*
* 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 com.webcohesion.enunciate.modules.swagger;
import com.webcohesion.enunciate.api.datatype.*;
import com.webcohesion.enunciate.api.datatype.Example;
import com.webcohesion.enunciate.api.resources.*;
import freemarker.ext.beans.BeansWrapperBuilder;
import freemarker.template.Configuration;
import freemarker.template.TemplateMethodModelEx;
import freemarker.template.TemplateModel;
import freemarker.template.TemplateModelException;
import java.util.*;
/**
* @author Ryan Heaton
*/
public class FindBestDataTypeMethod implements TemplateMethodModelEx {
static DataTypeReference GENERIC_STRING_BASED_DATATYPE_REFERENCE = new DataTypeReference() {
@Override
public String getLabel() {
return null;
}
@Override
public String getSlug() {
return null;
}
@Override
public List<ContainerType> getContainers() {
return null;
}
@Override
public DataType getValue() {
return null;
}
@Override
public BaseType getBaseType() {
return BaseType.string;
}
@Override
public Example getExample() {
return null;
}
@Override
public BaseTypeFormat getBaseTypeFormat() {
return null;
}
};
public Object exec(List list) throws TemplateModelException {
if (list.size() < 1) {
throw new TemplateModelException("The responsesOf method must have a parameter.");
}
TemplateModel from = (TemplateModel) list.get(0);
Object unwrapped = new BeansWrapperBuilder(Configuration.DEFAULT_INCOMPATIBLE_IMPROVEMENTS).build().unwrap(from);
if (unwrapped instanceof Entity) {
return findBestDataType((Entity) unwrapped);
}
throw new TemplateModelException("No responses for: " + unwrapped);
}
protected static DataTypeReference findBestDataType(Entity entity) {
if (entity == null) {
return null;
}
return findBestDataType(entity.getMediaTypes());
}
protected static DataTypeReference findBestDataType(List<? extends MediaTypeDescriptor> mediaTypes) {
if (mediaTypes == null || mediaTypes.isEmpty()) {
return null;
}
float highestQuality = Float.MIN_VALUE;
for (MediaTypeDescriptor mediaTypeDescriptor : mediaTypes) {
highestQuality = Math.max(highestQuality, mediaTypeDescriptor.getQualityOfSourceFactor());
}
//first filter out all the media types of lower quality:
mediaTypes = new ArrayList<MediaTypeDescriptor>(mediaTypes);
Iterator<? extends MediaTypeDescriptor> iterator = mediaTypes.iterator();
while (iterator.hasNext()) {
MediaTypeDescriptor mediaTypeDescriptor = iterator.next();
if (mediaTypeDescriptor.getQualityOfSourceFactor() < highestQuality) {
iterator.remove();
}
}
//return the first JSON-based media type.
for (MediaTypeDescriptor mediaTypeDescriptor : mediaTypes) {
if (mediaTypeDescriptor.getSyntax() != null && mediaTypeDescriptor.getSyntax().toLowerCase().contains("json")) {
return mediaTypeDescriptor.getDataType();
}
}
//return the first text-based media type.
for (MediaTypeDescriptor mediaTypeDescriptor : mediaTypes) {
String mt = mediaTypeDescriptor.getMediaType();
if (mt != null) {
mt = mt.toLowerCase();
if (mt.startsWith("text") || mt.endsWith("json") || mt.endsWith("xml")) {
DataTypeReference dataType = mediaTypeDescriptor.getDataType();
return dataType == null || dataType.getValue() == null ? GENERIC_STRING_BASED_DATATYPE_REFERENCE : dataType;
}
}
}
//didn't find any text-based media types; try any other media types.
for (MediaTypeDescriptor mediaTypeDescriptor : mediaTypes) {
if (mediaTypeDescriptor.getDataType() != null) {
return mediaTypeDescriptor.getDataType();
}
}
return null;
}
}