Jackson deserialization for sorting Criterion and subclasses

main/src/com/google/refine/sorting/Criterion.java

@@ -33,91 +33,53 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 package com.google.refine.sorting;
 
+import java.io.IOException;
+
 import org.json.JSONException;
 import org.json.JSONObject;
 
+import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonTypeInfo;
+import com.fasterxml.jackson.annotation.JsonSubTypes;
+import com.fasterxml.jackson.annotation.JsonSubTypes.Type;
 
 import com.google.refine.expr.ExpressionUtils;
 import com.google.refine.model.Column;
 import com.google.refine.model.Project;
 import com.google.refine.model.Record;
 import com.google.refine.model.Row;
+import com.google.refine.util.ParsingUtilities;
 
+@JsonTypeInfo(
+        use=JsonTypeInfo.Id.NAME,
+        include=JsonTypeInfo.As.PROPERTY,
+        property="valueType")
+@JsonSubTypes({
+    @Type(value = BooleanCriterion.class, name = "boolean"),
+    @Type(value = DateCriterion.class, name = "date"),
+    @Type(value = NumberCriterion.class, name = "number"),
+    @Type(value = StringCriterion.class, name = "string") })
 abstract public class Criterion  {
+    @JsonProperty("column")
     public String columnName;
+    @JsonIgnore
     protected int cellIndex = -2;
 
     // These take on positive and negative values to indicate where blanks and errors
     // go relative to non-blank values. They are also relative to each another.
     // Blanks and errors are not affected by the reverse flag.
+    @JsonProperty("blankPosition")
     public int blankPosition = 1;
+    @JsonProperty("errorPosition")
     public int errorPosition = 2;
 
-    public boolean reverse;
+    @JsonProperty("reverse")
-
+    public boolean reverse = false;
-    public void initializeFromJSON(JSONObject obj) 
-            throws JSONException {
-        if (obj.has("column") && !obj.isNull("column")) {
-            columnName = obj.getString("column");
-        }
-
-        if (obj.has("blankPosition") && !obj.isNull("blankPosition")) {
-            blankPosition = obj.getInt("blankPosition");
-        }
-        if (obj.has("errorPosition") && !obj.isNull("errorPosition")) {
-            errorPosition = obj.getInt("errorPosition");
-        }
-
-        if (obj.has("reverse") && !obj.isNull("reverse")) {
-            reverse = obj.getBoolean("reverse");
-        }
-    }
-    
-    public static Criterion reconstruct(JSONObject obj) throws JSONException {
-        String valueType = "string";
-        if (obj.has("valueType") && !obj.isNull("valueType")) {
-            valueType = obj.getString("valueType");
-        }
-
-        Criterion c = null;
-        if ("boolean".equals(valueType)) {
-            c = new BooleanCriterion();
-        } else if ("date".equals(valueType)) {
-            c = new DateCriterion();
-        } else if ("number".equals(valueType)) {
-            c = new NumberCriterion();
-        } else {
-            c = new StringCriterion(obj.getBoolean("caseSensitive"));
-        }
-
-        c.initializeFromJSON(obj);
-        return c;
-    }
 
     @JsonProperty("valueType")
     public abstract String getValueType();
     
-    @JsonProperty("reverse")
-    public boolean getReverse() {
-        return reverse;
-    }
-    
-    @JsonProperty("column")
-    public String getColumnName() {
-        return columnName;
-    }
-    
-    @JsonProperty("blankPosition")
-    public int getBlankPosition() {
-        return blankPosition;
-    }
-    
-    @JsonProperty("errorPosition")
-    public int getErrorPosition() {
-        return errorPosition;
-    }
-
     // Returns a cached cell index
     // We delay this fetching because the column might not exist
     // at deserialization (for instance if the column is created by an operation

main/src/com/google/refine/sorting/SortingConfig.java

@@ -1,11 +1,14 @@
 package com.google.refine.sorting;
 
-import org.json.JSONArray;
+import java.io.IOException;
+
 import org.json.JSONObject;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
+import com.google.refine.util.ParsingUtilities;
+
 
 /**
  * Stores the configuration of a row/record sorting setup.
@@ -28,22 +31,7 @@ public final class SortingConfig  {
         return _criteria;
     }
     
-    public static SortingConfig reconstruct(JSONObject obj) {
+    public static SortingConfig reconstruct(JSONObject obj) throws IOException {
-        Criterion[] criteria;
+        return ParsingUtilities.mapper.readValue(obj.toString(), SortingConfig.class);
-        if (obj != null && obj.has("criteria") && !obj.isNull("criteria")) {
-            JSONArray a = obj.getJSONArray("criteria");
-            int count = a.length();
-
-            criteria = new Criterion[count];
-
-            for (int i = 0; i < count; i++) {
-                JSONObject obj2 = a.getJSONObject(i);
-
-                criteria[i] = Criterion.reconstruct(obj2);
-            }
-        } else {
-            criteria = new Criterion[0];
-        }
-        return new SortingConfig(criteria);
     }
 }

main/src/com/google/refine/sorting/StringCriterion.java

@@ -36,28 +36,25 @@ package com.google.refine.sorting;
 import java.text.CollationKey;
 import java.text.Collator;
 
+import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
 import com.google.refine.expr.ExpressionUtils;
 
 public class StringCriterion extends Criterion {
+    @JsonProperty("caseSensitive")
     public boolean caseSensitive;
+    @JsonIgnore
     Collator collator;
     
     /**
      * 
      */
-    public StringCriterion(boolean caseSensitive) {
+    public StringCriterion() {
         super();
         collator = Collator.getInstance();
         collator.setDecomposition(Collator.FULL_DECOMPOSITION);
         collator.setStrength(Collator.SECONDARY);
-        this.caseSensitive = caseSensitive;
-    }
-    
-    @JsonProperty("caseSensitive")
-    public boolean isCaseSensitive() {
-        return caseSensitive;
     }
     
     @Override

main/tests/server/src/com/google/refine/tests/sorting/BooleanCriterionTest.java

@@ -1,14 +1,17 @@
 package com.google.refine.tests.sorting;
 
-import org.json.JSONObject;
+import java.io.IOException;
+
+import org.json.JSONException;
 import org.testng.annotations.Test;
 
 import com.google.refine.sorting.Criterion;
 import com.google.refine.tests.util.TestUtils;
+import com.google.refine.util.ParsingUtilities;
 
 public class BooleanCriterionTest {
     @Test
-    public void serializeBooleanCriterion() {
+    public void serializeBooleanCriterion() throws JSONException, IOException {
         String json = 
                 "        {\n" + 
                 "          \"errorPosition\": 1,\n" + 
@@ -17,6 +20,6 @@ public class BooleanCriterionTest {
                 "          \"blankPosition\": 2,\n" + 
                 "          \"reverse\": false\n" + 
                 "        }\n";
-        TestUtils.isSerializedTo(Criterion.reconstruct(new JSONObject(json)), json);
+        TestUtils.isSerializedTo(ParsingUtilities.mapper.readValue(json, Criterion.class), json);
     }
 }

main/tests/server/src/com/google/refine/tests/sorting/DateCriterionTest.java

@@ -1,14 +1,16 @@
 package com.google.refine.tests.sorting;
 
-import org.json.JSONObject;
+import java.io.IOException;
+
 import org.testng.annotations.Test;
 
 import com.google.refine.sorting.Criterion;
 import com.google.refine.tests.util.TestUtils;
+import com.google.refine.util.ParsingUtilities;
 
 public class DateCriterionTest {
     @Test
-    public void serializeDateCriterion() {
+    public void serializeDateCriterion() throws IOException {
         String json = 
                 "        {\n" + 
                 "          \"errorPosition\": 2,\n" + 
@@ -17,6 +19,6 @@ public class DateCriterionTest {
                 "          \"blankPosition\": -1,\n" + 
                 "          \"reverse\": true\n" + 
                 "        }\n";
-        TestUtils.isSerializedTo(Criterion.reconstruct(new JSONObject(json)), json);
+        TestUtils.isSerializedTo(ParsingUtilities.mapper.readValue(json, Criterion.class), json);
     }
 }

main/tests/server/src/com/google/refine/tests/sorting/NumberCriterionTest.java

@@ -1,14 +1,16 @@
 package com.google.refine.tests.sorting;
 
-import org.json.JSONObject;
+import java.io.IOException;
+
 import org.testng.annotations.Test;
 
 import com.google.refine.sorting.Criterion;
 import com.google.refine.tests.util.TestUtils;
+import com.google.refine.util.ParsingUtilities;
 
 public class NumberCriterionTest {
     @Test
-    public void serializeNumberCriterion() {
+    public void serializeNumberCriterion() throws IOException {
         String json = 
                 "        {\n" + 
                 "          \"errorPosition\": 2,\n" + 
@@ -17,6 +19,6 @@ public class NumberCriterionTest {
                 "          \"blankPosition\": 1,\n" + 
                 "          \"reverse\": true\n" + 
                 "        }\n";
-        TestUtils.isSerializedTo(Criterion.reconstruct(new JSONObject(json)), json);
+        TestUtils.isSerializedTo(ParsingUtilities.mapper.readValue(json, Criterion.class), json);
     }
 }

main/tests/server/src/com/google/refine/tests/sorting/SortingConfigTests.java

@@ -1,5 +1,8 @@
 package com.google.refine.tests.sorting;
 
+import java.io.IOException;
+
+import org.json.JSONException;
 import org.json.JSONObject;
 import org.testng.annotations.Test;
 
@@ -8,7 +11,7 @@ import com.google.refine.tests.util.TestUtils;
 
 public class SortingConfigTests {
     @Test
-    public void serializeSortingConfig() {
+    public void serializeSortingConfig() throws JSONException, IOException {
         String json = "{\n" + 
                 "      \"criteria\": [\n" + 
                 "        {\n" +