added new entity unit

src/main/java/se/su/dsv/scipro/data/dataobjects/Unit.java

@@ -0,0 +1,56 @@
+package se.su.dsv.scipro.data.dataobjects;
+
+import org.hibernate.annotations.Cache;
+import org.hibernate.annotations.CacheConcurrencyStrategy;
+import se.su.dsv.scipro.dataproviders.SortableField;
+
+import javax.persistence.*;
+
+/**
+ * User: fred
+ * Date: 5/29/12
+ */
+@Entity
+@Table(name="unit")
+@Cacheable(true)
+@Cache(usage= CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
+public class Unit extends DomainObject {
+
+    private static final long serialVersionUID = 1L;
+
+    @Id
+    @GeneratedValue
+    private Long id;
+
+    @Column(unique=true)
+    private Long identifier;
+
+    @Column(length=255)
+    @Basic(optional=false)
+    @SortableField
+    private String title;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Long getIdentifier() {
+        return identifier;
+    }
+
+    public void setIdentifier(Long identifier) {
+        this.identifier = identifier;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+}