io.undertow.attribute.PathParameterAttribute Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/*
* JBoss, Home of Professional Open Source.
* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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 io.undertow.attribute;
import java.util.ArrayDeque;
import java.util.Deque;
import io.undertow.server.HttpServerExchange;
/**
* Path parameter
*
* @author Stuart Douglas
*/
public class PathParameterAttribute implements ExchangeAttribute {
private final String parameter;
public PathParameterAttribute(String parameter) {
this.parameter = parameter;
}
@Override
public String readAttribute(final HttpServerExchange exchange) {
Deque res = exchange.getPathParameters().get(parameter);
if(res == null) {
return null;
}else if(res.isEmpty()) {
return "";
} else if(res.size() ==1) {
return res.getFirst();
} else {
StringBuilder sb = new StringBuilder("[");
int i = 0;
for(String s : res) {
sb.append(s);
if(++i != res.size()) {
sb.append(", ");
}
}
sb.append("]");
return sb.toString();
}
}
@Override
public void writeAttribute(final HttpServerExchange exchange, final String newValue) throws ReadOnlyAttributeException {
final ArrayDeque value = new ArrayDeque<>();
value.add(newValue);
exchange.getPathParameters().put(parameter, value);
}
@Override
public String toString() {
return "%{p," + parameter + "}";
}
public static final class Builder implements ExchangeAttributeBuilder {
@Override
public String name() {
return "Path Parameter";
}
@Override
public ExchangeAttribute build(final String token) {
if (token.startsWith("%{p,") && token.endsWith("}")) {
final String qp = token.substring(4, token.length() - 1);
return new PathParameterAttribute(qp);
}
return null;
}
@Override
public int priority() {
return 0;
}
}
}