ratpack.parse.NoSuchParserException Maven / Gradle / Ivy
/*
* Copyright 2014 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 ratpack.parse;
import com.google.common.base.Joiner;
import com.google.common.collect.Iterables;
import com.google.common.reflect.TypeToken;
import java.util.Collections;
/**
* Thrown when a request is made to parse the request, but no suitable parser was found that matched the content type and parse object.
*
* @see ratpack.handling.Context#parse(Parse)
*/
public class NoSuchParserException extends ParseException {
private static final long serialVersionUID = 0;
private static final String NEWLINE = System.getProperty("line.separator");
private final TypeToken type;
private final Object opts;
private final String contentType;
/**
* Constructor.
*
* @param type the target type
* @param opts the parse options
* @param contentType The content type of the request
*/
public NoSuchParserException(TypeToken type, Object opts, String contentType) {
super(getMessage(type, opts, contentType, Collections.emptyList()));
this.type = type;
this.opts = opts;
this.contentType = contentType;
}
/**
* Constructor.
*
* @param type the target type
* @param opts the parse options
* @param contentType The content type of the request
* @param parsers the parsers that had the opportunity to parse but didn't
*/
public NoSuchParserException(TypeToken type, Object opts, String contentType, Iterable> parsers) {
super(getMessage(type, opts, contentType, parsers));
this.type = type;
this.opts = opts;
this.contentType = contentType;
}
private static String getMessage(TypeToken type, Object opts, String contentType, Iterable> parsers) {
String message = "Could not find parser able to produce object of type '" + type + "' from request of content type '" + contentType + "'" + (opts == null ? "" : " and parse options '" + opts + "'");
String used = Joiner.on(NEWLINE).join(Iterables.transform(parsers, p -> " - ".concat(p.toString())));
if (!used.isEmpty()) {
message += ". The following parsers were tried:" + NEWLINE + used;
}
return message;
}
/**
* The target type.
*
* @return the target type
*/
public TypeToken getType() {
return type;
}
/**
* The parse opts.
*
* @return the parse opts
*/
public Object getOpts() {
return opts;
}
/**
* The content type of the request.
*
* @return the content type of the request
*/
public String getContentType() {
return contentType;
}
}