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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).

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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 java.util.Map;

import io.undertow.predicate.Predicate;
import io.undertow.server.HttpServerExchange;

/**
 * @author Stuart Douglas
 */
public class PredicateContextAttribute implements ExchangeAttribute {

    private final String name;

    public PredicateContextAttribute(final String name) {
        this.name = name;
    }

    @Override
    public String readAttribute(final HttpServerExchange exchange) {
        Map context = exchange.getAttachment(Predicate.PREDICATE_CONTEXT);
        if (context != null) {
            Object object = context.get(name);
            return object == null ? null : object.toString();
        }
        return null;
    }

    @Override
    public void writeAttribute(final HttpServerExchange exchange, final String newValue) throws ReadOnlyAttributeException {
        Map context = exchange.getAttachment(Predicate.PREDICATE_CONTEXT);
        if (context != null) {
            context.put(name, newValue);
        }
    }

    @Override
    public String toString() {
        return "${" + name + "}";
    }

    public static final class Builder implements ExchangeAttributeBuilder {

        @Override
        public String name() {
            return "Predicate context variable";
        }

        @Override
        public ExchangeAttribute build(final String token) {
            if (token.startsWith("${") && token.endsWith("}") && token.length() > 3) {
                return new PredicateContextAttribute(token.substring(2, token.length() - 1));
            } else if (token.startsWith("$")) {
                return new PredicateContextAttribute(token.substring(1, token.length()));
            }
            return null;
        }

        @Override
        public int priority() {
            return 0;
        }
    }
}