| // *************************************************************************************************************************** |
| // * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file * |
| // * distributed with this work for additional information regarding copyright ownership. The ASF licenses this file * |
| // * to you 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 org.apache.juneau.rest.vars; |
| |
| import static org.apache.juneau.internal.StringUtils.*; |
| |
| import java.io.*; |
| |
| import org.apache.juneau.rest.*; |
| import org.apache.juneau.serializer.*; |
| import org.apache.juneau.svl.*; |
| |
| /** |
| * Serialized request attribute variable resolver. |
| * |
| * <p> |
| * The format for this var is <js>"$SA{contentType,key[,defaultValue]}"</js>. |
| * |
| * <p> |
| * This variable resolver requires that a {@link RestRequest} object be set as a context object on the resolver or a |
| * session object on the resolver session. |
| * |
| * <p> |
| * Since this is a {@link SimpleVar}, any variables contained in the result will be recursively resolved. |
| * Likewise, if the arguments contain any variables, those will be resolved before they are passed to this var. |
| * |
| * <ul class='seealso'> |
| * <li class='link'>{@doc juneau-rest-server.SvlVariables} |
| * </ul> |
| */ |
| public class SerializedRequestAttrVar extends StreamedVar { |
| |
| private static final String SESSION_req = "req"; |
| |
| /** The name of this variable. */ |
| public static final String NAME = "SA"; |
| |
| /** |
| * Constructor. |
| */ |
| public SerializedRequestAttrVar() { |
| super(NAME); |
| } |
| |
| @Override /* Var */ |
| public void resolveTo(VarResolverSession session, Writer w, String key) throws Exception { |
| int i = key.indexOf(','); |
| if (i == -1) |
| throw new RuntimeException("Invalid format for $SA var. Must be of the format $SA{contentType,key[,defaultValue]}"); |
| String[] s2 = split(key); |
| RestRequest req = session.getSessionObject(RestRequest.class, SESSION_req, true); |
| if (req != null) { |
| Object o = req.getAttribute(key); |
| if (o == null) |
| o = key; |
| Serializer s = req.getSerializers().getSerializer(s2[0]); |
| if (s != null) |
| s.serialize(w, o); |
| } |
| } |
| |
| @Override /* Var */ |
| protected boolean allowNested() { |
| return false; |
| } |
| |
| @Override /* Var */ |
| protected boolean allowRecurse() { |
| return false; |
| } |
| |
| @Override /* Var */ |
| public boolean canResolve(VarResolverSession session) { |
| return session.hasSessionObject(SESSION_req); |
| } |
| } |