+
+ /**
+ * Answers true if we judge the value is worth displaying, by some heuristic
+ * rules, else false
+ *
+ * @param key
+ * @param value
+ * @param metadata
+ * @return
+ */
+ boolean isValueInteresting(String key, String value,
+ FeatureSourceI metadata)
+ {
+ /*
+ * currently suppressing zero values as well as null or empty
+ */
+ if (value == null || "".equals(value) || ".".equals(value)
+ || "0".equals(value))
+ {
+ return false;
+ }
+
+ if (metadata == null)
+ {
+ return true;
+ }
+
+ FeatureAttributeType attType = metadata.getAttributeType(key);
+ if (attType != null && (attType == FeatureAttributeType.Float
+ || attType.equals(FeatureAttributeType.Integer)))
+ {
+ try
+ {
+ float fval = Float.valueOf(value);
+ if (fval == 0f)
+ {
+ return false;
+ }
+ } catch (NumberFormatException e)
+ {
+ // ignore
+ }
+ }
+
+ return true; // default to interesting
+ }
+
+ /**
+ * Sets the feature source identifier
+ *
+ * @param theSource
+ */
+ public void setSource(String theSource)
+ {
+ source = theSource;
+ }
+}
+
+class SFSortByEnd implements Comparator<SequenceFeature>
+{
+ @Override
+ public int compare(SequenceFeature a, SequenceFeature b)
+ {
+ return a.getEnd() - b.getEnd();
+ }
+}
+
+class SFSortByBegin implements Comparator<SequenceFeature>
+{
+ @Override
+ public int compare(SequenceFeature a, SequenceFeature b)
+ {
+ return a.getBegin() - b.getBegin();
+ }