Merge pull request #6 from lubitchv/5513-database-variablemetadata

5513 database variablemetadata

src/main/java/edu/harvard/iq/dataverse/datavariable/CategoryMetadata.java

@@ -0,0 +1,88 @@
+package edu.harvard.iq.dataverse.datavariable;
+
+import javax.persistence.Index;
+import javax.persistence.Entity;
+import javax.persistence.Table;
+import javax.persistence.GenerationType;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+import javax.persistence.ManyToOne;
+import javax.persistence.JoinColumn;
+
+@Entity
+@Table(indexes = {@Index(columnList="category_id"), @Index(columnList="variablemetadata_id")})
+public class CategoryMetadata {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    Long id;
+
+    @ManyToOne
+    @JoinColumn(nullable=false)
+    VariableCategory category;
+
+    @ManyToOne
+    @JoinColumn(nullable=false)
+    private VariableMetadata variableMetadata;
+
+    Double wfreq;
+
+    public CategoryMetadata() {}
+
+    public CategoryMetadata(VariableMetadata variableMetadata) {
+        this.variableMetadata = variableMetadata;
+    }
+
+    public Double getWfreq() {
+        return wfreq;
+    }
+
+    public void setWfreq(Double wfreq) {
+        this.wfreq = wfreq;
+    }
+
+    public VariableCategory getCategory() {
+        return category;
+    }
+
+    public void setCategory(VariableCategory category) {
+        this.category = category;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public void setVariableMetadata(VariableMetadata variableMetadata) {
+        this.variableMetadata = variableMetadata;
+    }
+
+    public VariableMetadata getVariableMetadata() {
+        return variableMetadata;
+    }
+
+    @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 CategoryMetadata)) {
+            return false;
+        }
+
+        CategoryMetadata other = (CategoryMetadata) object;
+        if (this.id != other.id ) {
+            if (this.id == null || !this.id.equals(other.id)) {
+                return false;
+            }
+        }
+        return true;
+    }
+}

src/main/java/edu/harvard/iq/dataverse/datavariable/VariableMetadata.java

@@ -12,6 +12,11 @@
 import javax.persistence.GeneratedValue;
 import javax.persistence.GenerationType;
 import javax.persistence.Column;
+import javax.persistence.OneToMany;
+import javax.persistence.CascadeType;
+
+import java.util.Collection;
+import java.util.Set;
 
 import edu.harvard.iq.dataverse.FileMetadata;
 
@@ -79,9 +84,10 @@ public class VariableMetadata implements Serializable  {
     private boolean weighted = false;
 
     /**
-     * wfreq: Weighted frequency for weigted variable
+     * categoriesMetadata: variable metadata for categories that includes weighted frequencies
      */
-    private Double wfreq;
+    @OneToMany (mappedBy="VariableMetadata", cascade={ CascadeType.REMOVE, CascadeType.MERGE,CascadeType.PERSIST})
+    private Collection<CategoryMetadata> categoriesMetadata;
 
     /**
      * dataVariable: DataVariable with which this variable is weighted.
@@ -180,12 +186,13 @@ public boolean isWeighted() {
         return weighted;
     }
 
-    public Double getWfreq() {
-        return wfreq;
+    public Collection<CategoryMetadata> getWfreq() {
+        return categoriesMetadata;
     }
 
-    public void setWfreq(Double wfreq) {
-        this.wfreq = wfreq;
+    public void setWfreq(Set<CategoryMetadata> categoriesMetadata) {
+        this.categoriesMetadata = categoriesMetadata;
+
     }
 
     @Override