Merge pull request #736 from jfcabral/bugfix/638

[Test@SQLite] - Update SQLiteDialect overrideDriverTypeConversion to support empty date

Author: Igor Polevoy

activejdbc/src/main/java/org/javalite/activejdbc/dialects/MSSQLDialect.java

@@ -6,6 +6,7 @@
 import java.util.regex.Pattern;
 import org.javalite.activejdbc.DBException;
 import org.javalite.activejdbc.MetaModel;
+import org.javalite.common.Util;
 
 import static org.javalite.common.Util.join;
 
@@ -100,7 +101,7 @@ private String getAllColumns(String[] columns){
      */
     @Override
     public Object overrideDriverTypeConversion(MetaModel mm, String attributeName, Object value) {
-        if (value instanceof String && !((String) value).isEmpty()) {
+        if (value instanceof String && !Util.blank(value)) {
             String typeName = mm.getColumnMetadata().get(attributeName).getTypeName();
             if ("date".equalsIgnoreCase(typeName)) {
                 return java.sql.Date.valueOf((String) value);

activejdbc/src/main/java/org/javalite/activejdbc/dialects/SQLiteDialect.java

@@ -18,6 +18,7 @@
 import java.util.List;
 import org.javalite.activejdbc.MetaModel;
 import org.javalite.common.Convert;
+import org.javalite.common.Util;
 
 /**
  * @author Igor Polevoy
@@ -35,7 +36,7 @@ public String formSelect(String tableName, String[] columns, String subQuery, Li
     @Override
     public Object overrideDriverTypeConversion(MetaModel mm, String attributeName, Object value) {
         // SQLite returns DATE and DATETIME as String or Number values
-        if (value instanceof String || value instanceof Number) {
+        if (value instanceof String && !Util.blank(value) || value instanceof Number) {
             String typeName = mm.getColumnMetadata().get(attributeName).getTypeName();
             if ("DATE".equalsIgnoreCase(typeName)) {
                 return Convert.toSqlDate(value);