Initial implementation of Cron format parser

src/zutil/CronTimer.java

@@ -0,0 +1,48 @@
+package zutil;
+
+
+import com.mysql.fabric.xmlrpc.base.Array;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * This is a utility class that will generate timestamps from a Cron formatted String.
+ *
+ * @see <a hraf="http://www.nncron.ru/help/EN/working/cron-format.htm">Cron Format Specification</a>
+ */
+public class CronTimer {
+
+
+    /**
+     * A Constructor that takes a String containing 5 (or 6 for extended) individual fields in Cron format
+     */
+    public CronTimer(String cron){
+        String[] arr = cron.split("\\s");
+        if (arr.length < 5 || arr.length > 6)
+            throw new IllegalArgumentException(
+                    "String must contain between 5-6 fields, but got("+arr.length+" fields): "+cron);
+        init(arr[0], arr[1], arr[2], arr[3], arr[4], (arr.length>5 ? arr[5]: "*"));
+    }
+    /**
+     * A Constructor that takes separate Strings for each field
+     */
+    public CronTimer(String minute, String hour, String dayOfMonth, String monthOfYear, String dayOfWeek){
+        this(minute, hour, dayOfMonth, monthOfYear, dayOfWeek, "*");
+    }
+    /**
+     * A Constructor that takes separate Strings for each field with an extended year field
+     */
+    public CronTimer(String minute, String hour, String dayOfMonth, String monthOfYear, String dayOfWeek, String year){
+        init(minute, hour, dayOfMonth, monthOfYear, dayOfWeek, year);
+    }
+
+    private void init(String minute, String hour, String dayOfMonth, String monthOfYear, String dayOfWeek, String year){
+
+    }
+    protected static List<Integer> getRange(String number){
+        ArrayList<Integer> list = new ArrayList<>();
+        
+        return list;
+    }
+}

src/zutil/db/bean/DBBeanCache.java

@@ -3,8 +3,6 @@ package zutil.db.bean;
 import zutil.log.LogUtil;
 
 import java.lang.ref.WeakReference;
-import java.sql.ResultSet;
-import java.sql.SQLException;
 import java.util.Iterator;
 import java.util.Map;
 import java.util.Timer;

test/zutil/CronTimerTest.java

@@ -0,0 +1,29 @@
+package zutil;
+
+import org.junit.Test;
+
+import java.util.Arrays;
+import java.util.Collections;
+
+import static org.junit.Assert.*;
+
+/**
+ *
+ */
+public class CronTimerTest {
+
+    @Test
+    public void getRange() throws Exception {
+        // invalid numbers
+        assertEquals(Collections.EMPTY_LIST, CronTimer.getRange(""));
+        assertEquals(Collections.EMPTY_LIST, CronTimer.getRange(null));
+
+        // ranges
+        //assertEquals(Arrays.asList(0,1), CronTimer.getRange("0-1"));
+
+        // intervals
+
+        // range and interval
+    }
+
+}