new supertype for all date/time parsers #21

src/main/java/com/solab/iso8583/parse/DateTimeParseInfo.java

@@ -0,0 +1,43 @@
+package com.solab.iso8583.parse;
+
+import com.solab.iso8583.IsoType;
+
+import java.util.Calendar;
+import java.util.TimeZone;
+
+/**
+ * Abstract class for date/time parsers.
+ *
+ * @author Enrique Zamudio
+ *         Date: 18/12/13 18:21
+ */
+public abstract class DateTimeParseInfo extends FieldParseInfo {
+
+    protected static final long FUTURE_TOLERANCE;
+    protected TimeZone tz;
+
+   	static {
+   		FUTURE_TOLERANCE = Long.parseLong(System.getProperty("j8583.future.tolerance", "900000"));
+   	}
+
+    protected DateTimeParseInfo(IsoType type, int length) {
+        super(type, length);
+    }
+
+    public void setTimeZone(TimeZone value) {
+        tz = value;
+    }
+    public TimeZone getTimeZone() {
+        return tz;
+    }
+
+    public static void adjustWithFutureTolerance(Calendar cal) {
+   		//We need to handle a small tolerance into the future (a couple of minutes)
+   		long now = System.currentTimeMillis();
+   		long then = cal.getTimeInMillis();
+   		if (then > now && then-now > FUTURE_TOLERANCE) {
+   			cal.add(Calendar.YEAR, -1);
+   		}
+   	}
+
+}