org.jclouds.openstack.swift.blobstore.functions.ResourceToObjectList.java Source code

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Here is the source code for org.jclouds.openstack.swift.blobstore.functions.ResourceToObjectList.java

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/*
 * 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.openstack.swift.blobstore.functions;

import javax.inject.Inject;
import javax.inject.Singleton;

import org.jclouds.blobstore.domain.PageSet;
import org.jclouds.blobstore.domain.StorageMetadata;
import org.jclouds.blobstore.domain.internal.PageSetImpl;
import org.jclouds.openstack.swift.domain.ObjectInfo;

import com.google.common.base.Function;
import com.google.common.collect.Iterables;

/**
 * @author Adrian Cole
 */
@Singleton
public class ResourceToObjectList implements Function<PageSet<? extends StorageMetadata>, PageSet<ObjectInfo>> {
    private final ResourceToObjectInfo resource2ObjectMd;

    @Inject
    public ResourceToObjectList(ResourceToObjectInfo resource2ObjectMd) {
        this.resource2ObjectMd = resource2ObjectMd;
    }

    public PageSet<ObjectInfo> apply(PageSet<? extends StorageMetadata> list) {

        return new PageSetImpl<ObjectInfo>(Iterables.transform(list, new Function<StorageMetadata, ObjectInfo>() {

            public ObjectInfo apply(StorageMetadata from) {
                return resource2ObjectMd.apply(from);
            }

        }), list.getNextMarker());
    }
}