| /* |
| * 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.jclouds.aws.binders; |
| |
| import static com.google.common.base.Preconditions.checkArgument; |
| import static com.google.common.base.Preconditions.checkNotNull; |
| import static java.lang.String.format; |
| |
| import java.util.Map; |
| import java.util.Map.Entry; |
| |
| import org.jclouds.http.HttpRequest; |
| import org.jclouds.rest.Binder; |
| |
| import com.google.common.base.Function; |
| import com.google.common.collect.ImmutableMap; |
| import com.google.common.collect.Maps; |
| import com.google.common.collect.Multimap; |
| import com.google.common.collect.Multimaps; |
| |
| public class BindMapToIndexedFormParams implements Binder { |
| |
| private final String keyPattern; |
| private final String valuePattern; |
| |
| protected BindMapToIndexedFormParams(String keyPattern, String valuePattern) { |
| this.keyPattern = keyPattern; |
| this.valuePattern = valuePattern; |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public <R extends HttpRequest> R bindToRequest(R request, Object input) { |
| if (checkNotNull(input, "input") instanceof Iterable) |
| input = Maps.uniqueIndex((Iterable<String>) input, new Function<String, String>() { |
| int index = 1; |
| |
| @Override |
| public String apply(String input) { |
| return index++ + ""; |
| } |
| }); |
| checkArgument(checkNotNull(input, "input") instanceof Map, "this binder is only valid for Map"); |
| Map<String, String> mapping = (Map<String, String>) input; |
| |
| ImmutableMap.Builder<String, String> builder = ImmutableMap.builder(); |
| int amazonOneBasedIndex = 1; // according to docs, counters must start |
| // with 1 |
| for (Entry<String, String> entry : mapping.entrySet()) { |
| // not null by contract |
| builder.put(format(keyPattern, amazonOneBasedIndex), entry.getKey()); |
| builder.put(format(valuePattern, amazonOneBasedIndex), entry.getValue()); |
| amazonOneBasedIndex++; |
| } |
| Multimap<String, String> forms = Multimaps.forMap(builder.build()); |
| return forms.isEmpty() ? request : (R) request.toBuilder().replaceFormParams(forms).build(); |
| } |
| |
| } |