trunk/chemistry-opencmis-client/chemistry-opencmis-client-impl/src/main/java/org/apache/chemistry/opencmis/client/runtime/RenditionImpl.java

/*
 * 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.chemistry.opencmis.client.runtime;

import java.math.BigInteger;

import org.apache.chemistry.opencmis.client.api.CmisObject;
import org.apache.chemistry.opencmis.client.api.Document;
import org.apache.chemistry.opencmis.client.api.OperationContext;
import org.apache.chemistry.opencmis.client.api.Rendition;
import org.apache.chemistry.opencmis.client.api.Session;
import org.apache.chemistry.opencmis.client.bindings.spi.LinkAccess;
import org.apache.chemistry.opencmis.commons.data.ContentStream;
import org.apache.chemistry.opencmis.commons.exceptions.CmisConstraintException;
import org.apache.chemistry.opencmis.commons.impl.dataobjects.RenditionDataImpl;

/**
 * Implementation of <code>Rendition</code>.
 */
public class RenditionImpl extends RenditionDataImpl implements Rendition {

    private static final long serialVersionUID = 1L;

    private final Session session;
    private final String objectId;

    /**
     * Constructor.
     */
    public RenditionImpl(Session session, String objectId, String streamId, String renditionDocumentId, String kind,
            long length, String mimeType, String title, int height, int width) {
        super(streamId, mimeType, BigInteger.valueOf(length), kind, title, BigInteger.valueOf(width), BigInteger
                .valueOf(height), renditionDocumentId);
        this.session = session;
        this.objectId = objectId;
    }

    public long getLength() {
        return getBigLength() == null ? -1 : getBigLength().longValue();
    }

    public long getHeight() {
        return getBigHeight() == null ? -1 : getBigHeight().longValue();
    }

    public long getWidth() {
        return getBigWidth() == null ? -1 : getBigWidth().longValue();
    }

    public Document getRenditionDocument() {
        return getRenditionDocument(session.getDefaultContext());
    }

    public Document getRenditionDocument(OperationContext context) {
        if (getRenditionDocumentId() == null) {
            return null;
        }
        CmisObject rendDoc = session.getObject(getRenditionDocumentId(), context);
        if (!(rendDoc instanceof Document)) {
            return null;
        }

        return (Document) rendDoc;
    }

    public ContentStream getContentStream() {
        if (objectId == null || getStreamId() == null) {
            return null;
        }

        ContentStream contentStream;
        try {
            contentStream = session.getBinding().getObjectService()
                    .getContentStream(session.getRepositoryInfo().getId(), objectId, getStreamId(), null, null, null);
        } catch (CmisConstraintException e) {
            // no content stream
            return null;
        }

        if (contentStream == null) {
            return null;
        }

        String filename = contentStream.getFileName();
        if (filename == null) {
            filename = getTitle();
        }
        BigInteger bigLength = contentStream.getBigLength();
        if (bigLength == null) {
            bigLength = getBigLength();
        }
        long length = bigLength == null ? -1 : bigLength.longValue();

        return session.getObjectFactory().createContentStream(filename, length, contentStream.getMimeType(),
                contentStream.getStream());
    }

    public String getContentUrl() {
        if (session.getBinding().getObjectService() instanceof LinkAccess) {
            LinkAccess linkAccess = (LinkAccess) session.getBinding().getObjectService();
            return linkAccess.loadRenditionContentLink(session.getRepositoryInfo().getId(), objectId, getStreamId());
        }

        return null;
    }
}