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EMC Atmos Client for Java - provides REST access to object data on EMC platforms using the Atmos API.
There is a newer version: 3.2.1
/*
 * Copyright (c) 2013-2016, EMC Corporation.
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * + Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 * + Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * + The name of EMC Corporation may not be used to endorse or promote
 *   products derived from this software without specific prior written
 *   permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
package com.emc.atmos.api.bean;

import com.emc.atmos.api.Acl;
import com.emc.atmos.api.ChecksumValue;
import com.emc.atmos.api.ChecksumValueImpl;
import com.emc.atmos.api.RestUtil;

import java.util.Map;
import java.util.TreeMap;

public class ReadObjectResponse extends BasicResponse {
    private T object;
    private ObjectMetadata metadata;

    public ReadObjectResponse() {
    }

    public ReadObjectResponse( T object ) {
        this.object = object;
    }

    public T getObject() {
        return object;
    }

    public void setObject( T object ) {
        this.object = object;
    }

    public ObjectMetadata getMetadata() {
        return getMetadata( true );
    }

    public synchronized ObjectMetadata getMetadata( boolean decodeUtf8 ) {
        if ( metadata == null ) {
            Acl acl = new Acl( RestUtil.parseAclHeader( getFirstHeader( RestUtil.XHEADER_USER_ACL ) ),
                               RestUtil.parseAclHeader( getFirstHeader( RestUtil.XHEADER_GROUP_ACL ) ) );

            Map metaMap = new TreeMap();
            metaMap.putAll( RestUtil.parseMetadataHeader( getFirstHeader( RestUtil.XHEADER_META ),
                    false, decodeUtf8 ) );
            metaMap.putAll( RestUtil.parseMetadataHeader( getFirstHeader( RestUtil.XHEADER_LISTABLE_META ),
                    true, decodeUtf8 ) );

            String wsChecksumHeader = getFirstHeader( RestUtil.XHEADER_WSCHECKSUM );
            ChecksumValue wsChecksum = wsChecksumHeader == null ? null : new ChecksumValueImpl( wsChecksumHeader );
            String serverChecksumHeader = getFirstHeader( RestUtil.XHEADER_CONTENT_CHECKSUM );
            ChecksumValue serverChecksum = serverChecksumHeader == null ? null :
                                           new ChecksumValueImpl( getFirstHeader( RestUtil.XHEADER_CONTENT_CHECKSUM ) );
            String retentionPeriod = getFirstHeader(RestUtil.XHEADER_RETENTION_PERIOD);

            metadata = new ObjectMetadata( metaMap, acl, getContentType(), wsChecksum, serverChecksum );
            if (retentionPeriod != null) metadata.setRetentionPeriod(Long.parseLong(retentionPeriod));
            metadata.setRetentionPolicy(getFirstHeader(RestUtil.XHEADER_RETENTION_POLICY));
        }
        return metadata;
    }

    public ChecksumValue getWsChecksum() {
        return getMetadata().getWsChecksum();
    }

    public ChecksumValue getServerGeneratedChecksum() {
        return getMetadata().getServerChecksum();
    }
}