X-Git-Url: http://source.jalview.org/gitweb/?p=jalview.git;a=blobdiff_plain;f=src%2Fjalview%2Fstructure%2FStructureMapping.java;fp=src%2Fjalview%2Fstructure%2FStructureMapping.java;h=4174f5b8316eb82d900217207a4567d31ea1712d;hp=fcf322d44f6eaf8d69ea9d8a4937e1e17b77ecff;hb=9f1f7839cfd50555efd3af1ff4102348f950c563;hpb=e34a4c5332c2d4d92651e0adc99ab7c5d262d13b

diff --git a/src/jalview/structure/StructureMapping.java b/src/jalview/structure/StructureMapping.java
index fcf322d..4174f5b 100644
--- a/src/jalview/structure/StructureMapping.java
+++ b/src/jalview/structure/StructureMapping.java
@@ -30,6 +30,12 @@ import java.util.List;
 
 public class StructureMapping
 {
+  public static final int UNASSIGNED_VALUE = Integer.MIN_VALUE;
+
+  private static final int PDB_RES_NUM_INDEX = 0;
+
+  private static final int PDB_ATOM_NUM_INDEX = 1;
+
   String mappingDetails;
 
   SequenceI sequence;
@@ -40,17 +46,12 @@ public class StructureMapping
 
   String pdbchain;
 
-  public static final int UNASSIGNED_VALUE = Integer.MIN_VALUE;
-
-  private static final int PDB_RES_NUM_INDEX = 0;
-
-  private static final int PDB_ATOM_NUM_INDEX = 1;
-
   // Mapping key is residue index while value is an array containing PDB resNum,
   // and atomNo
   HashMap<Integer, int[]> mapping;
 
   jalview.datamodel.Mapping seqToPdbMapping = null;
+
   /**
    * Constructor
    * 
@@ -145,7 +146,7 @@ public class StructureMapping
    */
   public List<int[]> getPDBResNumRanges(int fromSeqPos, int toSeqPos)
   {
-    List<int[]> result = new ArrayList<int[]>();
+    List<int[]> result = new ArrayList<>();
     int startRes = -1;
     int endRes = -1;
 
@@ -263,4 +264,105 @@ public class StructureMapping
   {
     return seqToPdbMapping;
   }
+
+  /**
+   * A hash function that satisfies the contract that if two mappings are
+   * equal(), they have the same hashCode
+   */
+  @Override
+  public int hashCode()
+  {
+    final int prime = 31;
+    int result = 1;
+    result = prime * result
+            + ((mappingDetails == null) ? 0 : mappingDetails.hashCode());
+    result = prime * result
+            + ((pdbchain == null) ? 0 : pdbchain.hashCode());
+    result = prime * result + ((pdbfile == null) ? 0 : pdbfile.hashCode());
+    result = prime * result + ((pdbid == null) ? 0 : pdbid.hashCode());
+    result = prime * result
+            + ((seqToPdbMapping == null) ? 0 : seqToPdbMapping.hashCode());
+    result = prime * result
+            + ((sequence == null) ? 0 : sequence.hashCode());
+    return result;
+  }
+
+  @Override
+  public boolean equals(Object obj)
+  {
+    if (this == obj)
+    {
+      return true;
+    }
+    if (obj == null)
+    {
+      return false;
+    }
+    if (getClass() != obj.getClass())
+    {
+      return false;
+    }
+    StructureMapping other = (StructureMapping) obj;
+    if (mappingDetails == null)
+    {
+      if (other.mappingDetails != null)
+      {
+        return false;
+      }
+    }
+    else if (!mappingDetails.equals(other.mappingDetails))
+    {
+      return false;
+    }
+    if (pdbchain == null)
+    {
+      if (other.pdbchain != null)
+      {
+        return false;
+      }
+    }
+    else if (!pdbchain.equals(other.pdbchain))
+    {
+      return false;
+    }
+    if (pdbfile == null)
+    {
+      if (other.pdbfile != null)
+      {
+        return false;
+      }
+    }
+    else if (!pdbfile.equals(other.pdbfile))
+    {
+      return false;
+    }
+    if (pdbid == null)
+    {
+      if (other.pdbid != null)
+      {
+        return false;
+      }
+    }
+    else if (!pdbid.equals(other.pdbid))
+    {
+      return false;
+    }
+    if (seqToPdbMapping == null)
+    {
+      if (other.seqToPdbMapping != null)
+      {
+        return false;
+      }
+    }
+    else if (!seqToPdbMapping.equals(other.seqToPdbMapping))
+    {
+      return false;
+    }
+    if (sequence != other.sequence)
+    {
+      return false;
+    }
+
+    return true;
+  }
 }