org.apache.jclouds.oneandone.rest.util.SnapshotAdapter.java Source code

Introduction

Here is the source code for org.apache.jclouds.oneandone.rest.util.SnapshotAdapter.java

Source

/*
 * 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.jclouds.oneandone.rest.util;

import com.google.common.reflect.TypeToken;
import com.google.gson.Gson;
import com.google.gson.TypeAdapter;
import com.google.gson.stream.JsonReader;
import com.google.gson.stream.JsonToken;
import com.google.gson.stream.JsonWriter;
import com.google.inject.TypeLiteral;
import java.io.IOException;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import org.apache.jclouds.oneandone.rest.domain.Snapshot;

public class SnapshotAdapter<T> extends TypeAdapter<List<T>> {

    private com.google.gson.reflect.TypeToken<T> adapterclass;
    private Gson gson;

    public SnapshotAdapter(com.google.gson.reflect.TypeToken<T> adapterclass) {
        this.adapterclass = adapterclass;
        gson = new Gson();
    }

    static final TypeLiteral<List<Snapshot>> snapshot = new TypeLiteral<List<Snapshot>>() {
    };

    @Override
    public List<T> read(JsonReader reader) throws IOException {
        List<Snapshot> list = new ArrayList<Snapshot>();
        if (reader.peek() == JsonToken.BEGIN_OBJECT) {
            Type mapType = new TypeToken<Map<String, Object>>() {
            }.getType();
            Map<String, String> jsonMap = gson.fromJson(reader, mapType);
            Snapshot inning = Snapshot.create(jsonMap.get("id"), jsonMap.get("creation_date"),
                    jsonMap.get("deletion_date"));
            list.add(inning);
        } else if (reader.peek() == JsonToken.BEGIN_ARRAY) {

            reader.beginArray();
            while (reader.hasNext()) {
                Type mapType = new TypeToken<Map<String, Object>>() {
                }.getType();
                Map<String, String> jsonMap = gson.fromJson(reader, mapType);
                Snapshot inning = Snapshot.create(jsonMap.get("id"), jsonMap.get("creation_date"),
                        jsonMap.get("deletion_date"));
                list.add(inning);
            }
            reader.endArray();
        } else {
            reader.skipValue();
        }
        return (List<T>) list;
    }

    @Override
    public void write(JsonWriter writer, List<T> t) throws IOException {
    }

}