fix checkstyle

Author: 924060929

fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/DateLiteral.java

@@ -44,17 +44,17 @@
 public class DateLiteral extends Literal {
     public static final String JAVA_DATE_FORMAT = "yyyy-MM-dd";
 
+    public static final Set<Character> punctuations = ImmutableSet.of('!', '@', '#', '$', '%', '^', '&', '*', '(', ')',
+            '-', '+', '=', '_', '{', '}', '[', ']', '|', '\\', ':', ';', '"', '\'', '<', '>', ',', '.', '?', '/', '~',
+            '`');
+
     // for cast datetime type to date type.
     private static final LocalDateTime START_OF_A_DAY = LocalDateTime.of(0, 1, 1, 0, 0, 0);
     private static final LocalDateTime END_OF_A_DAY = LocalDateTime.of(9999, 12, 31, 23, 59, 59, 999999000);
     private static final DateLiteral MIN_DATE = new DateLiteral(0, 1, 1);
     private static final DateLiteral MAX_DATE = new DateLiteral(9999, 12, 31);
     private static final int[] DAYS_IN_MONTH = new int[] {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
 
-    public static final Set<Character> punctuations = ImmutableSet.of('!', '@', '#', '$', '%', '^', '&', '*', '(', ')',
-            '-', '+', '=', '_', '{', '}', '[', ']', '|', '\\', ':', ';', '"', '\'', '<', '>', ',', '.', '?', '/', '~',
-            '`');
-
     protected long year;
     protected long month;
     protected long day;
@@ -209,7 +209,9 @@ static Result<String, AnalysisException> normalize(String s) {
                     }
                 } else {
                     final String currentString = s;
-                    return Result.err(() -> new AnalysisException("date/datetime literal [" + currentString + "] is invalid"));
+                    return Result.err(
+                            () -> new AnalysisException("date/datetime literal [" + currentString + "] is invalid")
+                    );
                 }
                 i = j;
                 partNumber += 1;
@@ -230,7 +232,9 @@ static Result<String, AnalysisException> normalize(String s) {
                     sb.append(':');
                 } else {
                     final String currentString = s;
-                    return Result.err(() -> new AnalysisException("date/datetime literal [" + currentString + "] is invalid"));
+                    return Result.err(
+                            () -> new AnalysisException("date/datetime literal [" + currentString + "] is invalid")
+                    );
                 }
             } else {
                 break;
@@ -264,6 +268,7 @@ static Result<String, AnalysisException> normalize(String s) {
         return Result.ok(sb.toString());
     }
 
+    /** parseDateLiteral */
     public static Result<DateLiteral, AnalysisException> parseDateLiteral(String s) {
         Result<TemporalAccessor, AnalysisException> parseResult = parseDateTime(s);
         if (parseResult.isError()) {
@@ -280,6 +285,7 @@ public static Result<DateLiteral, AnalysisException> parseDateLiteral(String s)
         return Result.ok(new DateLiteral(year, month, day));
     }
 
+    /** parseDateTime */
     public static Result<TemporalAccessor, AnalysisException> parseDateTime(String s) {
         // fast parse '2022-01-01'
         if (s.length() == 10 && s.charAt(4) == '-' && s.charAt(7) == '-') {
@@ -336,7 +342,9 @@ public static Result<TemporalAccessor, AnalysisException> parseDateTime(String s
 
             // if Year is not present, throw exception
             if (!dateTime.isSupported(ChronoField.YEAR)) {
-                return Result.err(() -> new AnalysisException("date/datetime literal [" + originalString + "] is invalid"));
+                return Result.err(
+                        () -> new AnalysisException("date/datetime literal [" + originalString + "] is invalid")
+                );
             }
 
             return Result.ok(dateTime);

fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/DateTimeLiteral.java

@@ -130,6 +130,7 @@ public static int determineScale(String s) {
         return scale;
     }
 
+    /** parseDateTimeLiteral */
     public static Result<DateTimeLiteral, AnalysisException> parseDateTimeLiteral(String s, boolean isV2) {
         Result<TemporalAccessor, AnalysisException> parseResult = parseDateTime(s);
         if (parseResult.isError()) {

fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/FloatLiteral.java

@@ -48,42 +48,4 @@ public <R, C> R accept(ExpressionVisitor<R, C> visitor, C context) {
     public LiteralExpr toLegacyLiteral() {
         return new org.apache.doris.analysis.FloatLiteral(getDouble(), Type.FLOAT);
     }
-
-    public static boolean isValidFloat(String str) {
-        if (str == null || str.isEmpty()) {
-            return true;
-        }
-
-        int index = 0;
-        char c = str.charAt(index);
-        if (c == '+' || c == '-') {
-            index++;
-        }
-
-        while (index < str.length()) {
-            c = str.charAt(index++);
-            if (c == 'E' || c == '.') {
-                break;
-            }
-            if (!Character.isDigit(c)) {
-                return false;
-            }
-        }
-
-        for (; index < str.length(); index++) {
-            c = str.charAt(index);
-            if (!('0' <= c && c <= '9')) {
-                return false;
-            }
-        }
-        return true;
-    }
-
-    // private boolean parseIntegerParts(String str, int index) {
-    //     int index = 0;
-    //     char c = str.charAt(index);
-    //     if (c == '+' || c == '-') {
-    //         index++;
-    //     }
-    // }
 }

fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/IntegerLikeLiteral.java

@@ -39,32 +39,4 @@ public long getLongValue() {
     }
 
     public abstract Number getNumber();
-
-    public static boolean isValidInteger(String str) {
-        if (str == null || str.isEmpty()) {
-            return true;
-        }
-
-        int index = 0;
-
-        char c = str.charAt(index);
-        if (c == '+' || c == '-') {
-            index++;
-        }
-
-        for (; index < str.length(); index++) {
-            c = str.charAt(index);
-            if (!('0' <= c && c <= '9')) {
-                return false;
-            }
-        }
-        return true;
-    }
-
-    public static void main(String[] args) {
-        System.out.println(isValidInteger("01"));
-        System.out.println(isValidInteger("+01"));
-        System.out.println(isValidInteger("-01"));
-        System.out.println(isValidInteger("- 01"));
-    }
 }

fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/format/AndChecker.java

@@ -1,7 +1,25 @@
+// 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.doris.nereids.trees.expressions.literal.format;
 
 import java.util.List;
 
+/** AndChecker */
 public class AndChecker extends FormatChecker {
     private final List<FormatChecker> checkers;
 

fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/format/AtLeastChecker.java

@@ -19,6 +19,7 @@
 
 import java.util.function.Predicate;
 
+/** AtLeastChecker */
 public class AtLeastChecker extends FormatChecker {
     private int minCount;
     private int maxRead;

fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/format/CharChecker.java

@@ -1,5 +1,23 @@
+// 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.doris.nereids.trees.expressions.literal.format;
 
+/** CharChecker */
 public class CharChecker extends FormatChecker {
     public final char c;
 

fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/format/CustomCharChecker.java

@@ -1,8 +1,25 @@
-package org.apache.doris.nereids.trees.expressions.literal.format;
+// 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.doris.nereids.trees.expressions.literal.format;
 
 import java.util.function.Predicate;
 
+/** CustomCharChecker */
 public class CustomCharChecker extends FormatChecker {
     private Predicate<Character> checker;
 

fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/format/DateTimeChecker.java

@@ -1,7 +1,25 @@
+// 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.doris.nereids.trees.expressions.literal.format;
 
 import org.apache.doris.nereids.trees.expressions.literal.DateLiteral;
 
+/** DateTimeChecker */
 public class DateTimeChecker extends FormatChecker {
     private DateTimeChecker(StringInspect stringInspect) {
         super(stringInspect);
@@ -15,47 +33,47 @@ public static boolean isValidDateTime(String str) {
     @Override
     protected boolean doCheck() {
         FormatChecker dateFormatChecker = and(
-            or(
-                // date
-                and(
-                    or(
-                        // 20241012
-                        number(8, 8),
-                        // 2024-10-12
-                        and(
-                            number(4, 4), // year
-                            chars(DateLiteral.punctuations::contains),
-                            number(2, 2), // month
-                            chars(DateLiteral.punctuations::contains),
-                            number(2, 2) // day
-                        )
-                    ),
-                    option(ch('Z'))
-                ),
-                // datetime
-                and(
-                    or(
-                        // 20241012010203
-                        number(14, 14),
-                        // 2024-01-01 01:02:03
-                        and(
-                            number(4, 4), // year
-                            chars(DateLiteral.punctuations::contains),
-                            number(2, 2), // month
-                            chars(DateLiteral.punctuations::contains),
-                            number(2, 2), // day
-                            atLeast(1, c -> c == 'T' || c == ' ' || DateLiteral.punctuations.contains(c)),
-                            number(2, 2), // hour
-                            chars(DateLiteral.punctuations::contains),
-                            number(2, 2), // minute
-                            chars(DateLiteral.punctuations::contains),
-                            number(2, 2) // second
-                        )
+                or(
+                    // date
+                    and(
+                        or(
+                            // 20241012
+                            number(8, 8),
+                            // 2024-10-12
+                            and(
+                                number(4, 4), // year
+                                chars(DateLiteral.punctuations::contains),
+                                number(2, 2), // month
+                                chars(DateLiteral.punctuations::contains),
+                                number(2, 2) // day
+                            )
+                        ),
+                        option(ch('Z'))
                     ),
-                    option(nanoSecond()),
-                    option(timeZone())
+                    // datetime
+                    and(
+                        or(
+                            // 20241012010203
+                            number(14, 14),
+                            // 2024-01-01 01:02:03
+                            and(
+                                number(4, 4), // year
+                                chars(DateLiteral.punctuations::contains),
+                                number(2, 2), // month
+                                chars(DateLiteral.punctuations::contains),
+                                number(2, 2), // day
+                                atLeast(1, c -> c == 'T' || c == ' ' || DateLiteral.punctuations.contains(c)),
+                                number(2, 2), // hour
+                                chars(DateLiteral.punctuations::contains),
+                                number(2, 2), // minute
+                                chars(DateLiteral.punctuations::contains),
+                                number(2, 2) // second
+                            )
+                        ),
+                        option(nanoSecond()),
+                        option(timeZone())
+                    )
                 )
-            )
         );
         return dateFormatChecker.check();
     }