diff --git a/src/main/java/com/metaweb/gridworks/model/Cell.java b/src/main/java/com/metaweb/gridworks/model/Cell.java
index 14140cc93..e711fa480 100644
--- a/src/main/java/com/metaweb/gridworks/model/Cell.java
+++ b/src/main/java/com/metaweb/gridworks/model/Cell.java
@@ -137,11 +137,9 @@ public class Cell implements HasFields, Jsonizable {
             }
         }
         
-        if (value != null) {
-            if (type != null) {
-                if ("date".equals(type)) {
-                    value = ParsingUtilities.stringToDate((String) value); 
-                }
+        if (value != null && type != null) {
+            if ("date".equals(type)) {
+                value = ParsingUtilities.stringToDate((String) value); 
             }
             return new Cell(value, recon);
         } else {
diff --git a/src/main/java/com/metaweb/gridworks/model/recon/HeuristicReconConfig.java b/src/main/java/com/metaweb/gridworks/model/recon/HeuristicReconConfig.java
index 15a97f4b5..d8633ee10 100644
--- a/src/main/java/com/metaweb/gridworks/model/recon/HeuristicReconConfig.java
+++ b/src/main/java/com/metaweb/gridworks/model/recon/HeuristicReconConfig.java
@@ -310,15 +310,11 @@ public class HeuristicReconConfig extends ReconConfig {
                 for (String typeID : candidate.typeIDs) {
                     if (this.typeID.equals(typeID)) {
                         recon.setFeature(Recon.Feature_typeMatch, true);
-                        if (autoMatch && candidate.score >= 100) {
-                            if (count == 1 || 
-                                candidate.score / recon.candidates.get(1).score >= 1.5) {
-                                
-                                recon.match = candidate;
-                                recon.matchRank = 0;
-                                recon.judgment = Judgment.Matched;
-                                recon.judgmentAction = "auto";
-                            }
+                        if (autoMatch && candidate.score >= 100 && (count == 1 || candidate.score / recon.candidates.get(1).score >= 1.5)) {
+                            recon.match = candidate;
+                            recon.matchRank = 0;
+                            recon.judgment = Judgment.Matched;
+                            recon.judgmentAction = "auto";
                         }
                         break;
                     }
diff --git a/src/main/java/com/metaweb/gridworks/operations/ColumnSplitOperation.java b/src/main/java/com/metaweb/gridworks/operations/ColumnSplitOperation.java
index cfd874820..ad21d5194 100644
--- a/src/main/java/com/metaweb/gridworks/operations/ColumnSplitOperation.java
+++ b/src/main/java/com/metaweb/gridworks/operations/ColumnSplitOperation.java
@@ -153,7 +153,7 @@ public class ColumnSplitOperation extends EngineDependentOperation {
         FilteredRows filteredRows = engine.getAllFilteredRows(false);
         RowVisitor rowVisitor;
         if ("lengths".equals(_mode)) {
-            rowVisitor = new ColumnSplitRowVisitor(project, column.getCellIndex(), columnNames, rowIndices, tuples) {
+            rowVisitor = new ColumnSplitRowVisitor(column.getCellIndex(), columnNames, rowIndices, tuples) {
                 protected java.util.List<Serializable> split(String s) {
                     List<Serializable> results = new ArrayList<Serializable>(_fieldLengths.length + 1);
                     
@@ -174,7 +174,7 @@ public class ColumnSplitOperation extends EngineDependentOperation {
         } else if (_regex) {
             Pattern pattern = Pattern.compile(_separator);
             
-            rowVisitor = new ColumnSplitRowVisitor(project, column.getCellIndex(), columnNames, rowIndices, tuples) {
+            rowVisitor = new ColumnSplitRowVisitor(column.getCellIndex(), columnNames, rowIndices, tuples) {
                 Pattern _pattern;
                 
                 protected java.util.List<Serializable> split(String s) {
@@ -187,7 +187,7 @@ public class ColumnSplitOperation extends EngineDependentOperation {
                 }
             }.init(pattern);
         } else {
-            rowVisitor = new ColumnSplitRowVisitor(project, column.getCellIndex(), columnNames, rowIndices, tuples) {
+            rowVisitor = new ColumnSplitRowVisitor(column.getCellIndex(), columnNames, rowIndices, tuples) {
                 protected java.util.List<Serializable> split(String s) {
                     return stringArrayToValueList(
                             StringUtils.splitByWholeSeparatorPreserveAllTokens(s, _separator, _maxColumns));
@@ -225,7 +225,6 @@ public class ColumnSplitOperation extends EngineDependentOperation {
         int columnNameIndex = 1;
         
         ColumnSplitRowVisitor(
-            Project project,
             int cellIndex,
             List<String> columnNames,
             List<Integer> rowIndices,
diff --git a/src/main/java/com/metaweb/gridworks/protograph/transpose/TripleLoaderTransposedNodeFactory.java b/src/main/java/com/metaweb/gridworks/protograph/transpose/TripleLoaderTransposedNodeFactory.java
index 8ff1b3ced..e2745cc85 100644
--- a/src/main/java/com/metaweb/gridworks/protograph/transpose/TripleLoaderTransposedNodeFactory.java
+++ b/src/main/java/com/metaweb/gridworks/protograph/transpose/TripleLoaderTransposedNodeFactory.java
@@ -82,8 +82,8 @@ public class TripleLoaderTransposedNodeFactory implements TransposedNodeFactory
                     JSONObject.quote((String) object) : object.toString();
                     
             StringBuffer sb = new StringBuffer();
-            sb.append("{ \"s\" : \""); sb.append(subject); sb.append("\"");
-            sb.append(", \"p\" : \""); sb.append(predicate); sb.append("\"");
+            sb.append("{ \"s\" : \""); sb.append(subject); sb.append('"');
+            sb.append(", \"p\" : \""); sb.append(predicate); sb.append('"');
             sb.append(", \"o\" : "); sb.append(s);
             if (subjectCell != null || objectCell != null) {
                 sb.append(", \"meta\" : { ");
@@ -114,8 +114,8 @@ public class TripleLoaderTransposedNodeFactory implements TransposedNodeFactory
                     JSONObject.quote((String) object) : object.toString();
                     
             StringBuffer sb = new StringBuffer();
-            sb.append("{ \"s\" : \""); sb.append(subject); sb.append("\"");
-            sb.append(", \"p\" : \""); sb.append(predicate); sb.append("\"");
+            sb.append("{ \"s\" : \""); sb.append(subject); sb.append('"');
+            sb.append(", \"p\" : \""); sb.append(predicate); sb.append('"');
             sb.append(", \"o\" : "); sb.append(s);
             sb.append(", \"lang\" : "); sb.append(lang);