Github user Serhii-Harnyk commented on a diff in the pull request:
https://github.com/apache/drill/pull/581#discussion_r83871818
--- Diff:
logical/src/main/java/org/apache/drill/common/expression/fn/JodaDateValidator.java
---
@@ -0,0 +1,213 @@
+/*
+* Licensed to the Apache Software Foundation (ASF) under one or more
+* contributor license agreements. See the NOTICE file distributed with
+* this work for additional information regarding copyright ownership.
+* The ASF licenses this file to you under the Apache License, Version 2.0
+* (the "License"); you may not use this file except in compliance with
+* the License. You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+package org.apache.drill.common.expression.fn;
+
+import com.google.common.collect.Sets;
+import org.apache.commons.lang3.StringUtils;
+import org.apache.drill.common.map.CaseInsensitiveMap;
+
+import java.util.Comparator;
+import java.util.Set;
+
+public class JodaDateValidator {
+
+ private static final Set<String> ansiValuesForDeleting =
Sets.newTreeSet(new LengthDescComparator());
+ private static final CaseInsensitiveMap<String> ansiToJodaMap =
CaseInsensitiveMap.newTreeMap(new LengthDescComparator());
+
+ //tokens for deleting
+ public static final String SUFFIX_SP = "sp";
+ public static final String PREFIX_FM = "fm";
+ public static final String PREFIX_FX = "fx";
+ public static final String PREFIX_TM = "tm";
+
+ //ansi patterns
+ public static final String ANSI_FULL_NAME_OF_DAY = "day";
+ public static final String ANSI_DAY_OF_YEAR = "ddd";
+ public static final String ANSI_DAY_OF_MONTH = "dd";
+ public static final String ANSI_DAY_OF_WEEK = "d";
+ public static final String ANSI_NAME_OF_MONTH = "month";
+ public static final String ANSI_ABR_NAME_OF_MONTH = "mon";
+ public static final String ANSI_FULL_ERA_NAME = "ee";
+ public static final String ANSI_NAME_OF_DAY = "dy";
+ public static final String ANSI_TIME_ZONE_NAME = "tz";
+ public static final String ANSI_HOUR_12_NAME = "hh";
+ public static final String ANSI_HOUR_12_OTHER_NAME = "hh12";
+ public static final String ANSI_HOUR_24_NAME = "hh24";
+ public static final String ANSI_MINUTE_OF_HOUR_NAME = "mi";
+ public static final String ANSI_SECOND_OF_MINUTE_NAME = "ss";
+ public static final String ANSI_MILLISECOND_OF_MINUTE_NAME = "ms";
+ public static final String ANSI_WEEK_OF_YEAR = "ww";
+ public static final String ANSI_MONTH = "mm";
+ public static final String ANSI_HALFDAY_AM = "am";
+ public static final String ANSI_HALFDAY_PM = "pm";
+
+ //jodaTime patterns
+ public static final String JODA_FULL_NAME_OF_DAY = "EEEE";
+ public static final String JODA_DAY_OF_YEAR = "D";
+ public static final String JODA_DAY_OF_MONTH = "d";
+ public static final String JODA_DAY_OF_WEEK = "e";
+ public static final String JODA_NAME_OF_MONTH = "MMMM";
+ public static final String JODA_ABR_NAME_OF_MONTH = "MMM";
+ public static final String JODA_FULL_ERA_NAME = "G";
+ public static final String JODA_NAME_OF_DAY = "E";
+ public static final String JODA_TIME_ZONE_NAME = "TZ";
+ public static final String JODA_HOUR_12_NAME = "h";
+ public static final String JODA_HOUR_12_OTHER_NAME = "h";
+ public static final String JODA_HOUR_24_NAME = "H";
+ public static final String JODA_MINUTE_OF_HOUR_NAME = "m";
+ public static final String JODA_SECOND_OF_MINUTE_NAME = "s";
+ public static final String JODA_MILLISECOND_OF_MINUTE_NAME = "S";
+ public static final String JODA_WEEK_OF_YEAR = "w";
+ public static final String JODA_MONTH = "MM";
+ public static final String JODA_HALFDAY = "aa";
+
+ static {
+ ansiToJodaMap.put(ANSI_FULL_NAME_OF_DAY, JODA_FULL_NAME_OF_DAY);
+ ansiToJodaMap.put(ANSI_DAY_OF_YEAR, JODA_DAY_OF_YEAR);
+ ansiToJodaMap.put(ANSI_DAY_OF_MONTH, JODA_DAY_OF_MONTH);
+ ansiToJodaMap.put(ANSI_DAY_OF_WEEK, JODA_DAY_OF_WEEK);
+ ansiToJodaMap.put(ANSI_NAME_OF_MONTH, JODA_NAME_OF_MONTH);
+ ansiToJodaMap.put(ANSI_ABR_NAME_OF_MONTH, JODA_ABR_NAME_OF_MONTH);
+ ansiToJodaMap.put(ANSI_FULL_ERA_NAME, JODA_FULL_ERA_NAME);
+ ansiToJodaMap.put(ANSI_NAME_OF_DAY, JODA_NAME_OF_DAY);
+ ansiToJodaMap.put(ANSI_TIME_ZONE_NAME, JODA_TIME_ZONE_NAME);
+ ansiToJodaMap.put(ANSI_HOUR_12_NAME, JODA_HOUR_12_NAME);
+ ansiToJodaMap.put(ANSI_HOUR_12_OTHER_NAME, JODA_HOUR_12_OTHER_NAME);
+ ansiToJodaMap.put(ANSI_HOUR_24_NAME, JODA_HOUR_24_NAME);
+ ansiToJodaMap.put(ANSI_MINUTE_OF_HOUR_NAME, JODA_MINUTE_OF_HOUR_NAME);
+ ansiToJodaMap.put(ANSI_SECOND_OF_MINUTE_NAME,
JODA_SECOND_OF_MINUTE_NAME);
+ ansiToJodaMap.put(ANSI_MILLISECOND_OF_MINUTE_NAME,
JODA_MILLISECOND_OF_MINUTE_NAME);
+ ansiToJodaMap.put(ANSI_WEEK_OF_YEAR, JODA_WEEK_OF_YEAR);
+ ansiToJodaMap.put(ANSI_MONTH, JODA_MONTH);
+ ansiToJodaMap.put(ANSI_HALFDAY_AM, JODA_HALFDAY);
+ ansiToJodaMap.put(ANSI_HALFDAY_PM, JODA_HALFDAY);
+ }
+
+ static {
+ ansiValuesForDeleting.add(SUFFIX_SP);
+ ansiValuesForDeleting.add(PREFIX_FM);
+ ansiValuesForDeleting.add(PREFIX_FX);
+ ansiValuesForDeleting.add(PREFIX_TM);
+ }
+
+ /**
+ * Replaces all ansi patterns from {@param pattern},
+ * available in ansiToJodaMap keys to jodaTime equivalents.
+ *
+ * @param pattern date pattern in ansi format
+ * @return date pattern with replaced patterns in joda format
+ */
+ public static String toJodaFormat(String pattern) {
+ String preparedString = deleteFromAnsi(pattern);
--- End diff --
Done
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