fixed xsd:date was being treated as xsd:datetime

Author: jbarrasa

src/main/java/n10s/RDFToLPGStatementProcessor.java

@@ -121,7 +121,7 @@ protected Object getObjectValue(IRI propertyIRI, Literal object) {
       }
     } else if (datatype.equals(XMLSchema.DATE)) {
       try {
-        return DateUtils.parseDateTime(object.stringValue());
+        return DateUtils.parseDate(object.stringValue());
       } catch (IllegalArgumentException e) {
         //if date cannot be parsed we return string value
         return object.stringValue();

src/main/java/n10s/utils/DateUtils.java

@@ -2,6 +2,7 @@
 
 import java.time.DateTimeException;
 import java.time.LocalDateTime;
+import java.time.LocalDate;
 import java.time.format.DateTimeParseException;
 import java.util.Calendar;
 
@@ -51,4 +52,39 @@ public static LocalDateTime parseDateTime(String stringDateTime) {
 			return localDateTime;
 		}
 	}
+
+	public static LocalDate parseDate(String stringDate) {
+		boolean dateParsed = false;
+		LocalDate localDate = null;
+		StringBuilder parserErrors = new StringBuilder("Error parsing ").append(stringDate).append(":\n");
+
+		/* Try date parsing with LocalDateTime.parse */
+		try {
+			localDate = LocalDate.parse(stringDate);
+			dateParsed = true;
+		} catch (DateTimeParseException e) {
+			dateParsed = false;
+			parserErrors.append(e.getMessage()).append("\n");
+		}
+
+		/* If date is not parsed */
+		if (!dateParsed) {
+			/* Try with DatatypeConverter.parseDateTime */
+			try {
+				Calendar calendar = DatatypeConverter.parseDate(stringDate);
+				localDate = LocalDate.ofInstant(calendar.toInstant(), calendar.getTimeZone().toZoneId());
+				dateParsed = true;
+			} catch (IllegalArgumentException | DateTimeException e) {
+				dateParsed = false;
+				parserErrors.append(e.getMessage()).append("\n");
+			}
+		}
+
+		/* If date is not parsed, throw exception */
+		if (!dateParsed) {
+			throw new IllegalArgumentException(parserErrors.toString());
+		} else {
+			return localDate;
+		}
+	}
 }