io.undertow.attribute.QueryStringAttribute Maven / Gradle / Ivy
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* 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 io.undertow.server.HttpServerExchange;
/**
* The query string
*
* @author Stuart Douglas
*/
public class QueryStringAttribute implements ExchangeAttribute {
public static final String QUERY_STRING_SHORT = "%q";
public static final String QUERY_STRING = "%{QUERY_STRING}";
public static final String BARE_QUERY_STRING = "%{BARE_QUERY_STRING}";
public static final ExchangeAttribute INSTANCE = new QueryStringAttribute(true);
public static final ExchangeAttribute BARE_INSTANCE = new QueryStringAttribute(false);
private final boolean includeQuestionMark;
private QueryStringAttribute(boolean includeQuestionMark) {
this.includeQuestionMark = includeQuestionMark;
}
@Override
public String readAttribute(final HttpServerExchange exchange) {
String qs = exchange.getQueryString();
if(qs.isEmpty() || !includeQuestionMark) {
return qs;
}
return '?' + qs;
}
@Override
public void writeAttribute(final HttpServerExchange exchange, final String newValue) throws ReadOnlyAttributeException {
exchange.setQueryString(newValue);
}
@Override
public String toString() {
if(includeQuestionMark) {
return QUERY_STRING;
} else {
return BARE_QUERY_STRING;
}
}
public static final class Builder implements ExchangeAttributeBuilder {
@Override
public String name() {
return "Query String";
}
@Override
public ExchangeAttribute build(final String token) {
if (token.equals(QUERY_STRING) || token.equals(QUERY_STRING_SHORT)) {
return QueryStringAttribute.INSTANCE;
} else if(token.equals(BARE_QUERY_STRING)) {
return QueryStringAttribute.BARE_INSTANCE;
}
return null;
}
@Override
public int priority() {
return 0;
}
}
}