[SWE] Fix bug when accessing/setting individual elements from

DataBlockParallel + need to get a unique copy if data needs to remain
accessible while iterating through the array

Author: alexrobin

lib-ogc/swe-common-core/src/main/java/org/vast/data/AbstractRecordImpl.java

@@ -149,7 +149,8 @@ public void setData(DataBlock dataBlock)
     	{
     		for (int i = 0; i < fieldList.size(); i++)
     		{
-    			AbstractDataBlock childBlock = ((DataBlockParallel)dataBlock).blockArray[i];
+    			AbstractDataBlock childBlock = ((DataBlockParallel)dataBlock).blockArray[i].copy();
+    			childBlock.startIndex = ((DataBlockParallel)dataBlock).startIndex;
     			((AbstractDataComponentImpl)fieldList.get(i)).setData(childBlock);
     		}
     	}

lib-ogc/swe-common-core/src/main/java/org/vast/data/DataBlockParallel.java

@@ -72,12 +72,7 @@ public DataBlockParallel copy()
 	{
 		DataBlockParallel newBlock = new DataBlockParallel();
 		newBlock.startIndex = this.startIndex;
-		newBlock.blockArray = new AbstractDataBlock[blockArray.length];
-		
-        // shallow copy all blocks in the array
-		for (int i=0; i<blockArray.length; i++)
-			newBlock.blockArray[i] = this.blockArray[i].copy();
-		
+		newBlock.blockArray = this.blockArray;
 		newBlock.atomCount = this.atomCount;
 		return newBlock;
 	}

lib-ogc/swe-common-core/src/main/java/org/vast/data/DataBlockProxy.java

@@ -344,7 +344,7 @@ public IDataAccessor next()
                     {
                         var elt = array.getComponent(idx++);
                         var accessor = createElementProxy(clazz, array.getElementType());
-                        accessor.wrap(elt.getData());
+                        accessor.wrap(elt.getData().copy());
                         return accessor;
                     }
                 };