org.flowable.content.engine.impl.cmd.GetContentItemStreamCmd Maven / Gradle / Ivy
/* Licensed 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.flowable.content.engine.impl.cmd;
import java.io.InputStream;
import java.io.Serializable;
import org.flowable.content.api.ContentItem;
import org.flowable.content.api.ContentObject;
import org.flowable.content.api.ContentStorage;
import org.flowable.content.engine.impl.util.CommandContextUtil;
import org.flowable.engine.common.api.FlowableIllegalArgumentException;
import org.flowable.engine.common.api.FlowableObjectNotFoundException;
import org.flowable.engine.common.impl.interceptor.Command;
import org.flowable.engine.common.impl.interceptor.CommandContext;
/**
* @author Tijs Rademakers
*/
public class GetContentItemStreamCmd implements Command, Serializable {
private static final long serialVersionUID = 1L;
protected String contentItemId;
public GetContentItemStreamCmd(String contentItemId) {
this.contentItemId = contentItemId;
}
@Override
public InputStream execute(CommandContext commandContext) {
if (contentItemId == null) {
throw new FlowableIllegalArgumentException("contentItemId is null");
}
ContentItem contentItem = CommandContextUtil.getContentItemEntityManager().findById(contentItemId);
if (contentItem == null) {
throw new FlowableObjectNotFoundException("content item could not be found with id " + contentItemId);
}
ContentStorage contentStorage = CommandContextUtil.getContentEngineConfiguration().getContentStorage();
ContentObject contentObject = contentStorage.getContentObject(contentItem.getContentStoreId());
return contentObject.getContent();
}
}