Attachment.java

/**
 * Copyright 2010 JBoss Inc
 *
 * 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.jbpm.task;

import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.util.Date;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.ManyToOne;
import javax.persistence.Table;

@Entity
@Table(name = "JBPM_ATTACHMENT")
public class Attachment implements Externalizable {
	@Id
	@GeneratedValue(strategy = GenerationType.AUTO)
	private long id;

	/**
	 * Several attachments may have the same name
	 */
	private String name;

	/**
	 * current "inline" and "URL" are allowed, this is extendable though and
	 * others may be added
	 */
	private AccessType accessType;

	/**
	 * MIME type
	 */
	private String contentType;

	@ManyToOne()
	private User attachedBy;

	private Date attachedAt;

	@Column(name = "attachment_size")
	private int size;

	private long attachmentContentId;

	public void writeExternal(final ObjectOutput out) throws IOException {
		out.writeLong(id);
		out.writeUTF(name);
		out.writeUTF(accessType.toString());
		out.writeUTF(contentType);
		attachedBy.writeExternal(out);
		out.writeLong(attachedAt.getTime());
		out.writeInt(size);
		out.writeLong(attachmentContentId);
	}

	public void readExternal(final ObjectInput in) throws IOException,
			ClassNotFoundException {
		id = in.readLong();
		name = in.readUTF();
		accessType = AccessType.valueOf(in.readUTF());
		contentType = in.readUTF();
		attachedBy = new User();
		attachedBy.readExternal(in);
		attachedAt = new Date(in.readLong());
		size = in.readInt();
		attachmentContentId = in.readLong();
	}

	public Long getId() {
		return id;
	}

	public void setId(final long id) {
		this.id = id;
	}

	public String getName() {
		return name;
	}

	public void setName(final String name) {
		this.name = name;
	}

	public AccessType getAccessType() {
		return accessType;
	}

	public void setAccessType(final AccessType accessType) {
		this.accessType = accessType;
	}

	public String getContentType() {
		return contentType;
	}

	public void setContentType(final String contentType) {
		this.contentType = contentType;
	}

	public Date getAttachedAt() {
		return attachedAt;
	}

	public void setAttachedAt(final Date attachedAt) {
		this.attachedAt = attachedAt;
	}

	public User getAttachedBy() {
		return attachedBy;
	}

	public void setAttachedBy(final User attachedBy) {
		this.attachedBy = attachedBy;
	}

	public int getSize() {
		return size;
	}

	/**
	 * Sets the content for this attachment, i.e. the <field>size</field> and
	 * the <field>attachmentContentId</field>.
	 * 
	 * @param content
	 *            attachment content
	 */
	public void setContent(final Content content) {
		setSize(content.getContent().length);
		setAttachmentContentId(content.getId());
	}

	public void setSize(final int size) {
		this.size = size;
	}

	public long getAttachmentContentId() {
		return attachmentContentId;
	}

	public void setAttachmentContentId(final long contentId) {
		this.attachmentContentId = contentId;
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result
				+ ((accessType == null) ? 0 : accessType.hashCode());
		result = prime * result
				+ ((attachedAt == null) ? 0 : attachedAt.hashCode());
		result = prime * result
				+ ((attachedBy == null) ? 0 : attachedBy.hashCode());
		result = prime * result + size;
		result = prime * result
				+ (int) (attachmentContentId ^ (attachmentContentId >>> 32));
		result = prime * result
				+ ((contentType == null) ? 0 : contentType.hashCode());
		result = prime * result + ((name == null) ? 0 : name.hashCode());
		return result;
	}

	@Override
	public boolean equals(final Object obj) {
		if (this == obj) {
			return true;
		}
		if (obj == null) {
			return false;
		}
		if (!(obj instanceof Attachment)) {
			return false;
		}
		final Attachment other = (Attachment) obj;
		if (accessType == null) {
			if (other.accessType != null) {
				return false;
			}
		} else if (!accessType.equals(other.accessType)) {
			return false;
		}
		if (attachedAt == null) {
			if (other.attachedAt != null) {
				return false;
			}
		} else if (attachedAt.getTime() != other.attachedAt.getTime()) {
			return false;
		}
		if (attachedBy == null) {
			if (other.attachedBy != null) {
				return false;
			}
		} else if (!attachedBy.equals(other.attachedBy)) {
			return false;
		}
		if (size != other.size) {
			return false;
		}
		if (attachmentContentId != other.attachmentContentId) {
			return false;
		}
		if (contentType == null) {
			if (other.contentType != null) {
				return false;
			}
		} else if (!contentType.equals(other.contentType)) {
			return false;
		}
		if (name == null) {
			if (other.name != null) {
				return false;
			}
		} else if (!name.equals(other.name)) {
			return false;
		}
		return true;
	}

}