--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/main/java/edu/harvard/iq/dataverse/DatasetLock.java	Tue Sep 08 17:00:21 2015 +0200
@@ -0,0 +1,130 @@
+/*
+   Copyright (C) 2005-2012, by the President and Fellows of Harvard College.
+
+   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.
+
+   Dataverse Network - A web application to share, preserve and analyze research data.
+   Developed at the Institute for Quantitative Social Science, Harvard University.
+   Version 3.0.
+*/
+
+package edu.harvard.iq.dataverse;
+
+import edu.harvard.iq.dataverse.authorization.users.AuthenticatedUser;
+import java.util.Date;
+import java.io.Serializable;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
+import javax.persistence.OneToOne;
+import javax.persistence.Temporal;
+import javax.persistence.TemporalType;
+
+/**
+ *
+ * @author Leonid Andreev
+ */
+@Entity
+public class DatasetLock implements Serializable {
+    private static final long serialVersionUID = 1L;
+    
+    public DatasetLock() {
+    }
+
+    
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+    
+    @Temporal(value = TemporalType.TIMESTAMP)
+    private Date startTime;    
+
+    @OneToOne
+    @JoinColumn(nullable=false)
+    private Dataset dataset;
+
+    @ManyToOne
+    @JoinColumn(nullable=false)
+    private AuthenticatedUser user;    
+
+    private String info;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Date getStartTime() {
+        return startTime;
+    }
+
+    public void setStartTime(Date startTime) {
+        this.startTime = startTime;
+    }
+    
+    
+    public Dataset getDataset() {
+        return dataset;
+    }
+
+    public void setDataset(Dataset dataset) {
+        this.dataset = dataset;
+    }
+    
+    
+    public AuthenticatedUser getUser() {
+        return user;
+    }
+
+    public void setUser(AuthenticatedUser user) {
+        this.user = user;
+    }
+
+
+    public String getInfo() {
+        return info;
+    }
+
+    public void setInfo(String info) {
+        this.info = info;
+    }
+    
+    
+    @Override
+    public int hashCode() {
+        int hash = 0;
+        hash += (id != null ? id.hashCode() : 0);
+        return hash;
+    }
+
+    @Override
+    public boolean equals(Object object) {
+        if (!(object instanceof DatasetLock)) {
+            return false;
+        }
+        DatasetLock other = (DatasetLock) object;
+        return !((this.id == null && other.id != null) || (this.id != null && !this.id.equals(other.id)));
+    }
+
+    @Override
+    public String toString() {
+        return "edu.harvard.iq.dataverse.DatasetLock[ id=" + id + " ]";
+    }
+    
+}