Refactor TransactionalTable.filter()

src/main/java/com/yahoo/omid/client/ColumnWrapper.java

@@ -0,0 +1,47 @@
+package com.yahoo.omid.client;
+
+import java.util.Arrays;
+
+public class ColumnWrapper {
+    private byte[] family;
+    private byte[] qualifier;
+
+    public ColumnWrapper(byte[] family, byte[] qualifier) {
+        this.family = family;
+        this.qualifier = qualifier;
+    }
+
+    public byte[] getFamily() {
+        return family;
+    }
+
+    public byte[] getQualifier() {
+        return qualifier;
+    }
+
+    @Override
+    public int hashCode() {
+        final int prime = 31;
+        int result = 1;
+        result = prime * result + Arrays.hashCode(family);
+        result = prime * result + Arrays.hashCode(qualifier);
+        return result;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj)
+            return true;
+        if (obj == null)
+            return false;
+        if (getClass() != obj.getClass())
+            return false;
+        ColumnWrapper other = (ColumnWrapper) obj;
+        if (!Arrays.equals(family, other.family))
+            return false;
+        if (!Arrays.equals(qualifier, other.qualifier))
+            return false;
+        return true;
+    }
+
+}