first version of new validation algorithm, that is a lot faster

src/main/java/ninja/javafx/smartcsv/fx/table/model/CSVModel.java

@@ -58,6 +58,7 @@ public class CSVModel {
 
     /**
      * sets the validator configuration for the data revalidates
+     *
      * @param validationConfiguration the validator configuration for this data
      */
     public void setValidationConfiguration(ValidationConfiguration validationConfiguration) {
@@ -67,6 +68,7 @@ public class CSVModel {
 
     /**
      * returns the data as a list of rows of the
+     *
      * @return list of rows
      */
     public ObservableList<CSVRow> getRows() {
@@ -79,6 +81,7 @@ public class CSVModel {
 
     /**
      * adds a new and empty row
+     *
      * @return the new row
      */
     public CSVRow addRow() {
@@ -91,6 +94,7 @@ public class CSVModel {
 
     /**
      * sets the column headers as string array
+     *
      * @param header the headers of the columns
      */
     public void setHeader(String[] header) {
@@ -100,6 +104,7 @@ public class CSVModel {
 
     /**
      * returns the column headers
+     *
      * @return the column headers
      */
     public String[] getHeader() {
@@ -116,8 +121,6 @@ public class CSVModel {
         logger.info("revalidate: hasValidator -> {}", hasValidator());
 
         if (!hasValidator()) return;
-
-        validator.clearScriptCache();
         revalidationService.setHeader(header);
         revalidationService.setRows(rows);
         revalidationService.setValidator(validator);
@@ -171,6 +174,7 @@ public class CSVModel {
                             }
                         }
 
+
                         int maxRows = rows.size();
                         for (int lineNumber = 0; lineNumber < maxRows; lineNumber++) {
                             CSVRow row = rows.get(lineNumber);
@@ -183,7 +187,7 @@ public class CSVModel {
                                 CSVValue value = table.get(column).getValue();
                                 value.setValidator(validator);
                                 if (validator != null) {
-                                    ValidationError validationError = validator.isValid(column, value.getValue(), lineNumber);
+                                    ValidationError validationError = validator.isValid(lineNumber, column, value.getValue());
                                     if (validationError != null) {
                                         logger.info("revalidate: {} errors found in line {}", validationError.getMessages().size(), lineNumber);
                                         errors.add(validationError);

src/main/java/ninja/javafx/smartcsv/fx/table/model/CSVValue.java

@@ -89,7 +89,7 @@ public class CSVValue {
      */
     public void setValue(String value) {
         if (validator != null) {
-            valid = validator.isValid(column, value, rowNumber);
+            valid = validator.isValid(rowNumber, column, value);
         }
         this.value.set(value);
     }

src/main/java/ninja/javafx/smartcsv/validation/AlphaNumericValidation.java

@@ -0,0 +1,20 @@
+package ninja.javafx.smartcsv.validation;
+
+import static org.apache.commons.validator.GenericValidator.matchRegexp;
+
+/**
+ * Created by abi on 07.08.2016.
+ */
+public class AlphaNumericValidation implements Validation {
+    @Override
+    public void check(int row, String value, ValidationError error) {
+        if (!matchRegexp(value, "[0-9a-zA-Z]*")) {
+            error.add("validation.message.alphanumeric");
+        }
+    }
+
+    @Override
+    public Type getType() {
+        return Type.ALPHANUMERIC;
+    }
+}

src/main/java/ninja/javafx/smartcsv/validation/ColumnValidations.java

@@ -0,0 +1,47 @@
+package ninja.javafx.smartcsv.validation;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Created by abi on 07.08.2016.
+ */
+public class ColumnValidations {
+
+    private Map<String, Map<Validation.Type, Validation>> columnValidationMap = new HashMap<>();
+
+    public void add(String column, Validation validation) {
+        Map<Validation.Type, Validation> validationMap = columnValidationMap.get(column);
+        if (validationMap == null) {
+            validationMap = new HashMap<>();
+            columnValidationMap.put(column, validationMap);
+        }
+        validationMap.put(validation.getType(), validation);
+    }
+
+    public void remove(String column, Validation.Type type) {
+        Map<Validation.Type, Validation> validationMap = columnValidationMap.get(column);
+        if (validationMap != null) {
+            validationMap.remove(type);
+        }
+    }
+
+    public ValidationError isValid(int row, String column, String value) {
+        ValidationError error = ValidationError.withLineNumber(row);
+        Map<Validation.Type, Validation> validationMap = columnValidationMap.get(column);
+        if (validationMap != null) {
+            for (Validation validation: validationMap.values()) {
+
+                if (validation.getType() == Validation.Type.NOT_EMPTY) {
+                    validation.check(row, value, error);
+                } else {
+                    if (value != null && !value.isEmpty()) {
+                        validation.check(row, value, error);
+                    }
+                }
+            }
+        }
+        return error;
+    }
+
+}

src/main/java/ninja/javafx/smartcsv/validation/ColumnValidationsBuilder.java

@@ -0,0 +1,16 @@
+package ninja.javafx.smartcsv.validation;
+
+/**
+ * Created by abi on 07.08.2016.
+ */
+public class ColumnValidationsBuilder {
+
+    private ColumnValidationsBuilder() {}
+
+    public static ColumnValidationsBuilder columnValidationsBuilder() {
+        return new ColumnValidationsBuilder();
+    }
+
+    //private
+
+}

src/main/java/ninja/javafx/smartcsv/validation/DateValidation.java

@@ -0,0 +1,28 @@
+package ninja.javafx.smartcsv.validation;
+
+import static org.apache.commons.validator.GenericValidator.isDate;
+
+/**
+ * Created by abi on 07.08.2016.
+ */
+public class DateValidation implements Validation {
+
+    private String dateformat;
+
+    public DateValidation(String dateformat) {
+        assert dateformat != null && !dateformat.trim().isEmpty() : "empty date format for date validation";
+        this.dateformat = dateformat;
+    }
+
+    @Override
+    public void check(int row, String value, ValidationError error) {
+        if (!isDate(value, dateformat, true)) {
+            error.add("validation.message.date.format", dateformat);
+        }
+    }
+
+    @Override
+    public Type getType() {
+        return Type.DATE;
+    }
+}

src/main/java/ninja/javafx/smartcsv/validation/DoubleValidation.java

@@ -0,0 +1,21 @@
+package ninja.javafx.smartcsv.validation;
+
+import static org.apache.commons.validator.GenericValidator.isDouble;
+
+/**
+ * Created by abi on 07.08.2016.
+ */
+public class DoubleValidation implements Validation {
+
+    @Override
+    public void check(int row, String value, ValidationError error) {
+        if (!isDouble(value)) {
+            error.add("validation.message.double");
+        }
+    }
+
+    @Override
+    public Type getType() {
+        return Type.DOUBLE;
+    }
+}

src/main/java/ninja/javafx/smartcsv/validation/GroovyValidation.java

@@ -0,0 +1,53 @@
+package ninja.javafx.smartcsv.validation;
+
+import groovy.lang.Binding;
+import groovy.lang.GroovyShell;
+import groovy.lang.Script;
+import org.codehaus.groovy.control.CompilationFailedException;
+
+/**
+ * Created by abi on 07.08.2016.
+ */
+public class GroovyValidation implements Validation {
+
+    private String groovyScript;
+    private GroovyShell shell = new GroovyShell();
+    private Script script;
+
+    public GroovyValidation(String groovyScript) {
+        this.groovyScript = groovyScript;
+        script = shell.parse(groovyScript);
+    }
+
+
+    @Override
+    public void check(int row, String value, ValidationError error) {
+        Binding binding = new Binding();
+        binding.setVariable("value", value);
+        script.setBinding(binding);
+
+        Object groovyResult = null;
+        try {
+            groovyResult = script.run();
+        } catch (CompilationFailedException e) {
+            error.add("validation.message.groovy.exception", groovyScript, e.getMessage());
+            e.printStackTrace();
+        }
+        if (groovyResult == null) {
+            error.add("validation.message.groovy.return.null", groovyScript);
+        }
+
+        if (!isScriptResultTrue(groovyResult)) {
+            error.add(groovyResult.toString());
+        }
+    }
+
+    @Override
+    public Type getType() {
+        return Type.GROOVY;
+    }
+
+    private boolean isScriptResultTrue(Object groovyResult) {
+        return groovyResult.equals(true) || groovyResult.toString().trim().toLowerCase().equals("true");
+    }
+}

src/main/java/ninja/javafx/smartcsv/validation/IntegerValidation.java

@@ -0,0 +1,21 @@
+package ninja.javafx.smartcsv.validation;
+
+import static org.apache.commons.validator.GenericValidator.isInt;
+
+/**
+ * Created by abi on 07.08.2016.
+ */
+public class IntegerValidation implements Validation {
+
+    @Override
+    public void check(int row, String value, ValidationError error) {
+        if (!isInt(value)) {
+            error.add("validation.message.integer");
+        }
+    }
+
+    @Override
+    public Type getType() {
+        return Type.INTEGER;
+    }
+}

src/main/java/ninja/javafx/smartcsv/validation/MaxLengthValidation.java

@@ -0,0 +1,27 @@
+package ninja.javafx.smartcsv.validation;
+
+import static org.apache.commons.validator.GenericValidator.maxLength;
+
+/**
+ * Created by abi on 07.08.2016.
+ */
+public class MaxLengthValidation implements Validation {
+
+    private int maxLength;
+
+    public MaxLengthValidation(int maxLength) {
+        this.maxLength = maxLength;
+    }
+
+    @Override
+    public void check(int row, String value, ValidationError error) {
+        if (!maxLength(value, maxLength)) {
+            error.add("validation.message.max.length", Integer.toString(maxLength));
+        }
+    }
+
+    @Override
+    public Type getType() {
+        return Type.MAX_LENGTH;
+    }
+}

src/main/java/ninja/javafx/smartcsv/validation/MinLengthValidation.java

@@ -0,0 +1,27 @@
+package ninja.javafx.smartcsv.validation;
+
+import static org.apache.commons.validator.GenericValidator.minLength;
+
+/**
+ * Created by abi on 07.08.2016.
+ */
+public class MinLengthValidation implements Validation {
+
+    private int minLength;
+
+    public MinLengthValidation(int minLength) {
+        this.minLength = minLength;
+    }
+
+    @Override
+    public void check(int row, String value, ValidationError error) {
+        if (!minLength(value, minLength)) {
+            error.add("validation.message.min.length", Integer.toString(minLength));
+        }
+    }
+
+    @Override
+    public Type getType() {
+        return Type.MIN_LENGTH;
+    }
+}

src/main/java/ninja/javafx/smartcsv/validation/NotEmptyValidation.java

@@ -0,0 +1,21 @@
+package ninja.javafx.smartcsv.validation;
+
+import static org.apache.commons.validator.GenericValidator.isBlankOrNull;
+
+/**
+ * Created by abi on 07.08.2016.
+ */
+public class NotEmptyValidation implements Validation {
+
+    @Override
+    public void check(int row, String value, ValidationError error) {
+        if (isBlankOrNull(value)) {
+            error.add("validation.message.not.empty");
+        }
+    }
+
+    @Override
+    public Type getType() {
+        return Type.NOT_EMPTY;
+    }
+}

src/main/java/ninja/javafx/smartcsv/validation/RegExpValidation.java

@@ -0,0 +1,27 @@
+package ninja.javafx.smartcsv.validation;
+
+import static org.apache.commons.validator.GenericValidator.matchRegexp;
+
+/**
+ * Created by abi on 07.08.2016.
+ */
+public class RegExpValidation implements Validation {
+
+    private String regexp;
+
+    public RegExpValidation(String regexp) {
+        this.regexp = regexp;
+    }
+
+    @Override
+    public void check(int row, String value, ValidationError error) {
+        if (!matchRegexp(value, regexp)) {
+            error.add("validation.message.regexp", regexp);
+        }
+    }
+
+    @Override
+    public Type getType() {
+        return Type.REGEXP;
+    }
+}

src/main/java/ninja/javafx/smartcsv/validation/UniqueValidation.java

@@ -0,0 +1,29 @@
+package ninja.javafx.smartcsv.validation;
+
+import java.util.HashMap;
+
+/**
+ * Created by abi on 07.08.2016.
+ */
+public class UniqueValidation implements Validation {
+
+    private HashMap<String, Integer> columnValueMap = new HashMap<>();
+
+    @Override
+    public void check(int row, String value, ValidationError error) {
+        Integer valueInLineNumber = columnValueMap.get(value);
+        if (valueInLineNumber != null) {
+            if (!valueInLineNumber.equals(row)) {
+                valueInLineNumber += 1; // show not 0 based line numbers to user
+                error.add("validation.message.uniqueness", value, valueInLineNumber.toString());
+            }
+        } else {
+            columnValueMap.put(value, row);
+        }
+    }
+
+    @Override
+    public Type getType() {
+        return Type.UNIQUE;
+    }
+}

src/main/java/ninja/javafx/smartcsv/validation/Validation.java

@@ -0,0 +1,11 @@
+package ninja.javafx.smartcsv.validation;
+
+/**
+ * Created by abi on 07.08.2016.
+ */
+public interface Validation {
+
+    enum Type { NOT_EMPTY, UNIQUE, DOUBLE, INTEGER, MIN_LENGTH, MAX_LENGTH, DATE, ALPHANUMERIC, REGEXP, VALUE_OF, GROOVY }
+    void check(int row, String value, ValidationError error);
+    Type getType();
+}

src/main/java/ninja/javafx/smartcsv/validation/Validator.java

@@ -49,9 +49,7 @@ public class Validator {
     ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 
     private ValidationConfiguration validationConfig;
-    private GroovyShell shell = new GroovyShell();
+    private ColumnValidations columnValidations = new ColumnValidations();
-    private Map<String, Script> scriptCache = new HashMap<>();
-    private Map<String, HashMap<String, Integer>> uniquenessLookupTable = new HashMap<>();
 
     ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
     // constructors
@@ -63,6 +61,7 @@ public class Validator {
      */
     public Validator(ValidationConfiguration validationConfig) {
          this.validationConfig = validationConfig;
+        initColumnValidations();
     }
 
 
@@ -76,25 +75,10 @@ public class Validator {
      * @param value the value to check
      * @return ValidationError with information if valid and if not which getMessage happened
      */
-    public ValidationError isValid(String column, String value, Integer lineNumber) {
+    public ValidationError isValid(Integer lineNumber, String column, String value) {
         ValidationError result = null;
         if (hasConfig()) {
-
+            ValidationError error = columnValidations.isValid(lineNumber, column, value);
-            ValidationError error = ValidationError.withLineNumber(lineNumber);
-            checkBlankOrNull(column, value, error);
-            if (value != null && !value.isEmpty()) {
-                checkRegularExpression(column, value, error);
-                checkAlphaNumeric(column, value, error);
-                checkDate(column, value, error);
-                checkMaxLength(column, value, error);
-                checkMinLength(column, value, error);
-                checkInteger(column, value, error);
-                checkGroovy(column, value, error);
-                checkValueOf(column, value, error);
-                checkDouble(column, value, error);
-                checkUniqueness(column, value, lineNumber, error);
-            }
-
             if (!error.isEmpty()) {
                 result = error;
             }
@@ -102,6 +86,7 @@ public class Validator {
         return result;
     }
 
+
     public boolean hasConfig() {
         return validationConfig != null;
     }
@@ -110,147 +95,67 @@ public class Validator {
     // private methods
     ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 
-    private void checkUniqueness(String column, String value, Integer lineNumber, ValidationError error) {
+    private void initColumnValidations() {
-        Boolean uniqueRule = validationConfig.getUniqueRuleFor(column);
+        if (hasConfig()) {
-        if (uniqueRule != null && uniqueRule) {
+        String[] columns = validationConfig.headerNames();
-            HashMap<String, Integer> columnValueMap = uniquenessLookupTable.get(column);
+        for(String column: columns) {
-            columnValueMap = getColumnValueMap(column, columnValueMap);
+            Boolean alphaNumeric = validationConfig.getAlphanumericRuleFor(column);
-            Integer valueInLineNumber = columnValueMap.get(value);
+            if (alphaNumeric != null && alphaNumeric) {
-            if (valueInLineNumber != null) {
+                columnValidations.add(column, new AlphaNumericValidation());
-                if (!valueInLineNumber.equals(lineNumber)) {
-                    error.add("validation.message.uniqueness", value, valueInLineNumber.toString());
-                }
-            } else {
-                columnValueMap.put(value, lineNumber);
-            }
-        }
             }
 
-    private HashMap<String, Integer> getColumnValueMap(String column, HashMap<String, Integer> valueLineNumber) {
-        if (valueLineNumber == null) {
-            valueLineNumber = new HashMap<>();
-            uniquenessLookupTable.put(column, valueLineNumber);
-        }
-        return valueLineNumber;
-    }
-
-    private void checkGroovy(String column, String value, ValidationError error) {
-        String groovyScript = validationConfig.getGroovyRuleFor(column);
-        if (groovyScript != null) {
-
-            Script script = scriptCache.get(column);
-            if (script == null) {
-                script = shell.parse(groovyScript);
-                scriptCache.put(column, script);
-            }
-
-            Binding binding = new Binding();
-            binding.setVariable("value", value);
-            script.setBinding(binding);
-
-            Object groovyResult = null;
-            try {
-                groovyResult = script.run();
-            } catch (CompilationFailedException e) {
-                error.add("validation.message.groovy.exception", groovyScript, e.getMessage());
-                e.printStackTrace();
-            }
-            if (groovyResult == null) {
-                error.add("validation.message.groovy.return.null", groovyScript);
-            }
-
-            if (!isScriptResultTrue(groovyResult)) {
-                error.add(groovyResult.toString());
-            }
-
-        }
-    }
-
-    private boolean isScriptResultTrue(Object groovyResult) {
-        return groovyResult.equals(true) || groovyResult.toString().trim().toLowerCase().equals("true");
-    }
-
-    private void checkValueOf(String column, String value, ValidationError error) {
-        List<String> values = validationConfig.getValueOfRuleFor(column);
-        if (values != null) {
-            if (!values.contains(value)) {
-                String commaSeparated = values.stream().collect(joining(", "));
-                error.add("validation.message.value.of", value, commaSeparated);
-            }
-        }
-    }
-
-    private void checkBlankOrNull(String column, String value, ValidationError error) {
-        Boolean notEmptyRule = validationConfig.getNotEmptyRuleFor(column);
-        if (notEmptyRule != null && notEmptyRule) {
-            if (isBlankOrNull(value)) {
-                error.add("validation.message.not.empty");
-            }
-        }
-    }
-
-    private void checkInteger(String column, String value, ValidationError error) {
-        Boolean integerRule = validationConfig.getIntegerRuleFor(column);
-        if (integerRule != null && integerRule) {
-            if (!isInt(value)) {
-                error.add("validation.message.integer");
-            }
-        }
-    }
-
-    private void checkDouble(String column, String value, ValidationError error) {
             Boolean doubleRule = validationConfig.getDoubleRuleFor(column);
             if (doubleRule != null && doubleRule) {
-            if (!isDouble(value)) {
+                columnValidations.add(column, new DoubleValidation());
-                error.add("validation.message.double");
+            }
-            }
+
-        }
+            Boolean integerRule = validationConfig.getIntegerRuleFor(column);
+            if (integerRule != null && integerRule) {
+                columnValidations.add(column, new IntegerValidation());
+            }
+
+            Boolean notEmptyRule = validationConfig.getNotEmptyRuleFor(column);
+            if (notEmptyRule != null && notEmptyRule) {
+                columnValidations.add(column, new NotEmptyValidation());
+            }
+
+            Boolean uniqueRule = validationConfig.getUniqueRuleFor(column);
+            if (uniqueRule != null && uniqueRule) {
+                columnValidations.add(column, new UniqueValidation());
+            }
+
+            String dateRule = validationConfig.getDateRuleFor(column);
+            if (dateRule != null && !dateRule.trim().isEmpty()) {
+                columnValidations.add(column, new DateValidation(dateRule));
             }
 
-    private void checkMinLength(String column, String value, ValidationError error) {
             Integer minLength = validationConfig.getMinLengthRuleFor(column);
             if (minLength != null) {
-            if (!minLength(value, minLength)) {
+                columnValidations.add(column, new MinLengthValidation(minLength));
-                error.add("validation.message.min.length", minLength.toString());
-            }
-        }
             }
 
-    private void checkMaxLength(String column, String value, ValidationError error) {
             Integer maxLength = validationConfig.getMaxLengthRuleFor(column);
             if (maxLength != null) {
-            if (!maxLength(value, maxLength)) {
+                columnValidations.add(column, new MaxLengthValidation(maxLength));
-                error.add("validation.message.max.length", maxLength.toString());
-            }
-        }
             }
 
-    private void checkDate(String column, String value, ValidationError error) {
-        String dateformat = validationConfig.getDateRuleFor(column);
-        if (dateformat != null && !dateformat.trim().isEmpty()) {
-            if (!isDate(value, dateformat, true)) {
-                error.add("validation.message.date.format", dateformat);
-            }
-        }
-    }
-
-    private void checkAlphaNumeric(String column, String value, ValidationError error) {
-        Boolean alphaNumericRule = validationConfig.getAlphanumericRuleFor(column);
-        if (alphaNumericRule != null && alphaNumericRule) {
-            if (!matchRegexp(value, "[0-9a-zA-Z]*")) {
-                error.add("validation.message.alphanumeric");
-            }
-        }
-    }
-
-    private void checkRegularExpression(String column, String value, ValidationError error) {
             String regexp = validationConfig.getRegexpRuleFor(column);
             if (regexp != null && !regexp.trim().isEmpty()) {
-            if (!matchRegexp(value, regexp)) {
+                columnValidations.add(column, new RegExpValidation(regexp));
-                error.add("validation.message.regexp", regexp);
+            }
+
+            String groovy = validationConfig.getGroovyRuleFor(column);
+            if (groovy != null && !groovy.trim().isEmpty()) {
+                columnValidations.add(column, new GroovyValidation(groovy));
+            }
+            List<String> valueOfRule = validationConfig.getValueOfRuleFor(column);
+            if (valueOfRule != null && !valueOfRule.isEmpty()) {
+                columnValidations.add(column, new ValueOfValidation(valueOfRule));
             }
         }
         }
+    }
+
 
     public ValidationError isHeaderValid(String[] headerNames) {
         ValidationError result = null;
@@ -281,8 +186,4 @@ public class Validator {
         }
         return result;
     }
-
-    public void clearScriptCache() {
-        scriptCache.clear();
-    }
 }

src/main/java/ninja/javafx/smartcsv/validation/ValueOfValidation.java

@@ -0,0 +1,30 @@
+package ninja.javafx.smartcsv.validation;
+
+import java.util.List;
+
+import static java.util.stream.Collectors.joining;
+
+/**
+ * Created by abi on 07.08.2016.
+ */
+public class ValueOfValidation implements Validation {
+
+    private List<String> values;
+
+    public ValueOfValidation(List<String> values) {
+        this.values = values;
+    }
+
+    @Override
+    public void check(int row, String value, ValidationError error) {
+        if (!values.contains(value)) {
+            String commaSeparated = values.stream().collect(joining(", "));
+            error.add("validation.message.value.of", value, commaSeparated);
+        }
+    }
+
+    @Override
+    public Type getType() {
+        return Type.VALUE_OF;
+    }
+}

src/test/java/ninja/javafx/smartcsv/fx/table/model/CSVValueTest.java

@@ -55,6 +55,6 @@ public class CSVValueTest {
         sut.setValue(VALUE);
 
         // assertion
-        verify(validator).isValid(eq(COLUMN), eq(VALUE), anyInt());
+        verify(validator).isValid(anyInt(), eq(COLUMN), eq(VALUE));
     }
 }

src/test/java/ninja/javafx/smartcsv/validation/ValidatorTest.java

@@ -70,8 +70,10 @@ public class ValidatorTest {
     ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
     @Test
     public void validation() {
+        System.out.println(column + "  " + value + "  " + expectedResult + "  " + expectedError);
+
         // execution
-        ValidationError result = sut.isValid(column, value, 0);
+        ValidationError result = sut.isValid(0, column, value);
 
         // assertion
         assertThat(result == null, is(expectedResult));
@@ -112,7 +114,7 @@ public class ValidatorTest {
     }
 
     public static String json(String column, String rule, Object value) {
-        String json = "{\"columns\":{\"" + column + "\":{\"" + rule + "\":";
+        String json = "{\"headers\": { \"list\": [\""+column+"\"]},\"columns\":{\"" + column + "\":{\"" + rule + "\":";
         if (value instanceof String) {
             json += "\""+ value + "\"";
         } else if (value instanceof List) {