/****************************************************************
* 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.james.mailbox.jpa.mail.model.openjpa;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Date;
import java.util.List;
import javax.mail.Flags;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.Table;
import org.apache.james.mailbox.MailboxException;
import org.apache.james.mailbox.jpa.mail.model.JPAHeader;
import org.apache.james.mailbox.jpa.mail.model.JPAMailbox;
import org.apache.james.mailbox.store.mail.model.Message;
import org.apache.james.mailbox.store.mail.model.PropertyBuilder;
import org.apache.james.mailbox.store.streaming.LazySkippingInputStream;
import org.apache.james.mailbox.store.streaming.StreamUtils;
import org.apache.openjpa.persistence.Persistent;
/**
* JPA implementation of {@link AbstractJPAMessage} which use openjpas {@link Persistent} type to
* be able to stream the message content without loading it into the memory at all.
*
* This is not supported for all DB's yet. See {@link http://openjpa.apache.org/builds/latest/docs/manual/ref_guide_mapping_jpa.html}
*
* If your DB is not supported by this, use {@link JPAMessage}
*
* TODO: Fix me!
*/
@Entity(name="Message")
@Table(name="JAMES_MAIL")
public class JPAStreamingMessage extends AbstractJPAMessage {
@Persistent(optional=false, fetch=FetchType.LAZY)
@Column(name = "MAIL_BYTES", length=1048576000, nullable = false)
private InputStream content;
@Deprecated
public JPAStreamingMessage() {}
public JPAStreamingMessage(JPAMailbox mailbox, long uid, Date internalDate, int size, Flags flags,
InputStream content, int bodyStartOctet, final List<JPAHeader> headers, final PropertyBuilder propertyBuilder) throws MailboxException {
super(mailbox, uid, internalDate, flags, size ,bodyStartOctet,headers,propertyBuilder);
this.content = content;
}
/**
* Create a copy of the given message
*
* @param message
* @throws IOException
*/
public JPAStreamingMessage(JPAMailbox mailbox, long uid,Message<?> message) throws MailboxException {
super(mailbox, uid, message);
try {
this.content = new ByteArrayInputStream(StreamUtils.toByteArray(message.getFullContent()));
} catch (IOException e) {
throw new MailboxException("Unable to parse message",e);
}
}
public InputStream getFullContent() throws IOException {
return content;
}
public InputStream getBodyContent() throws IOException {
return new LazySkippingInputStream(content, getBodyStartOctet());
}
}