--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/main/java/edu/harvard/iq/dataverse/datavariable/VariableRange.java	Tue Sep 08 17:00:21 2015 +0200
@@ -0,0 +1,243 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+
+package edu.harvard.iq.dataverse.datavariable;
+
+import java.io.Serializable;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.Index;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
+import javax.persistence.Table;
+
+/**
+ *
+ * @author Leonid Andreev
+ *    
+ * Largely based on the VariableRange entity from the DVN v2-3;
+ * original author: Ellen Kraffmiller (2006).
+ * 
+ */
+@Entity
+@Table(indexes = {@Index(columnList="datavariable_id")})
+public class VariableRange implements Serializable {
+    
+    /*
+     * Simple constructor: 
+     */
+    public VariableRange() {
+    }
+    
+    /*
+     * Definitions of class properties: 
+     */
+   
+    private static final long serialVersionUID = 1L;
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+    
+    /*
+     * DataVariable for which this range is defined.
+     */
+    @ManyToOne
+    @JoinColumn(nullable=false)
+    private DataVariable dataVariable;
+    
+    /*
+     * beginValue: represents the beginning of the range.
+     */
+    private String beginValue;
+
+    /*
+     * endValue: represents the end of the range.
+     */
+    private String endValue;
+
+    public enum VariableRangeType { MIN, MAX, MIN_EXCLUSIVE, MAX_EXCLUSIVE, POINT};
+    /*
+     * beginValueType: type of the value that opens the range.
+     */
+    
+    //@ManyToOne
+    private VariableRangeType beginValueType;
+    
+    /*
+     * endValueType: type of the value that closes the range.
+     */
+    //@ManyToOne
+    private VariableRangeType endValueType;
+
+    
+    /*
+     * Getter and Setter methods:
+     */
+    
+    
+    public String getBeginValue() {
+        return this.beginValue;
+    }
+    
+    public void setBeginValue(String beginValue) {
+        this.beginValue = beginValue;
+    }
+    
+    public String getEndValue() {
+        return this.endValue;
+    }
+    
+    public void setEndValue(String endValue) {
+        this.endValue = endValue;
+    }
+
+    public VariableRangeType getBeginValueType() {
+        return this.beginValueType;
+    }
+    
+    public void setBeginValueType(VariableRangeType beginValueType) {
+        this.beginValueType = beginValueType;
+    }
+    
+    public void setBeginValueTypeMin() {
+        this.beginValueType = VariableRangeType.MIN;
+    }
+    
+    public void setBeginValueTypeMax() {
+        this.beginValueType = VariableRangeType.MAX;
+    }
+    
+    public void setBeginValueTypeMinExcl() {
+        this.beginValueType = VariableRangeType.MIN_EXCLUSIVE;
+    }
+    
+    public void setBeginValueTypeMaxExcl() {
+        this.beginValueType = VariableRangeType.MAX_EXCLUSIVE;
+    }
+    
+    public void setBeginValueTypePoint() {
+        this.beginValueType = VariableRangeType.POINT;
+    }
+        
+    public boolean isBeginValueTypeMin() {
+        return this.beginValueType == VariableRangeType.MIN;
+    }
+    
+    public boolean isBeginValueTypeMax() {
+        return this.beginValueType == VariableRangeType.MAX;
+    }
+    
+    public boolean isBeginValueTypeMinExcl() {
+        return this.beginValueType == VariableRangeType.MIN_EXCLUSIVE;
+    }
+    
+    public boolean isBeginValueTypeMaxExcl() {
+        return this.beginValueType == VariableRangeType.MAX_EXCLUSIVE;
+    }
+    
+    public boolean isBeginValueTypePoint() {
+        return this.beginValueType == VariableRangeType.POINT;
+    }
+    
+    public VariableRangeType getEndValueType() {
+        return this.endValueType;
+    }
+      
+    public void setEndValueType(VariableRangeType endValueType) {
+        this.endValueType = endValueType;
+    }
+
+    public void setEndValueTypeMin() {
+        this.endValueType = VariableRangeType.MIN;
+    }
+    
+    public void setEndValueTypeMax() {
+        this.endValueType = VariableRangeType.MAX;
+    }
+    
+    public void setEndValueTypeMinExcl() {
+        this.endValueType = VariableRangeType.MIN_EXCLUSIVE;
+    }
+    
+    public void setEndValueTypeMaxExcl() {
+        this.endValueType = VariableRangeType.MAX_EXCLUSIVE;
+    }
+    
+    public void setEndValueTypePoint() {
+        this.endValueType = VariableRangeType.POINT;
+    }
+    
+    public boolean isEndValueTypeMin() {
+        return this.endValueType == VariableRangeType.MIN;
+    }
+    
+    public boolean isEndValueTypeMax() {
+        return this.endValueType == VariableRangeType.MAX;
+    }
+    
+    public boolean isEndValueTypeMinExcl() {
+        return this.endValueType == VariableRangeType.MIN_EXCLUSIVE;
+    }
+    
+    public boolean isEndValueTypeMaxExcl() {
+        return this.endValueType == VariableRangeType.MAX_EXCLUSIVE;
+    }
+    
+    public boolean isEndValueTypePoint() {
+        return this.endValueType == VariableRangeType.POINT;
+    }
+    
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+ 
+    public DataVariable getDataVariable() {
+        return this.dataVariable;
+    }
+
+    public void setDataVariable(DataVariable dataVariable) {
+        this.dataVariable = dataVariable;
+    }
+    
+    
+    /* 
+     * Custom overrides for hashCode(), equals() and toString() methods:
+     */
+    
+    
+    @Override
+    public int hashCode() {
+        int hash = 0;
+        hash += (this.id != null ? this.id.hashCode() : 0);
+        return hash;
+    }
+
+    @Override
+    public boolean equals(Object object) {
+        if (!(object instanceof VariableRange)) {
+            return false;
+        }
+        VariableRange other = (VariableRange)object;
+        if (this.id != other.id) {
+            if (this.id == null || !this.id.equals(other.id)) {
+                return false;
+            }                    
+        }
+        return true;
+    }
+    
+    @Override
+    public String toString() {
+        return "edu.harvard.iq.dataverse.VariableRange[ id=" + id + " ]";
+    }
+    
+}