/*
 * Licensed 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.jdbi.v3.core.mapper;

import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;

import org.jdbi.v3.core.statement.StatementContext;

/**
 * Column mapper for Java {@code enum} types.
 * @param <E> the enum type mapped
 */
public abstract class EnumMapper<E extends Enum<E>> implements ColumnMapper<E> {
    EnumMapper() {}

    /**
     * @param <E> the enum type to map
     * @param type the enum type to map
     * @return an enum mapper that matches on {@link Enum#name()}
     */
    public static <E extends Enum<E>> ColumnMapper<E> byName(Class<E> type) {
        return new ByName<>(type);
    }

    /**
     * @param <E> the enum type to map
     * @param type the enum type to map
     * @return an enum mapper that matches on {@link Enum#ordinal()}
     */
    public static <E extends Enum<E>> ColumnMapper<E> byOrdinal(Class<E> type) {
        return new ByOrdinal<>(type);
    }

    private static class ByName<E extends Enum<E>> extends EnumMapper<E> {
        private final Class<E> type;
        private final ConcurrentMap<String, E> insensitiveLookup = new ConcurrentHashMap<>();

        private ByName(Class<E> type) {
            this.type = type;
        }

        @Override
        public E map(ResultSet r, int columnNumber, StatementContext ctx) throws SQLException {
            String name = r.getString(columnNumber);
            return name == null ? null : insensitiveLookup.computeIfAbsent(name, this::resolve);
        }

        private E resolve(String name) {
            final IllegalArgumentException failure;
            try {
                return Enum.valueOf(type, name);
            } catch (IllegalArgumentException e) {
                failure = e;
            }
            for (E e : type.getEnumConstants()) {
                if (e.name().equalsIgnoreCase(name)) {
                    return e;
                }
            }
            throw failure;
        }
    }

    private static class ByOrdinal<E extends Enum<E>> extends EnumMapper<E> {
        private final E[] constants;

        private ByOrdinal(Class<E> type) {
            this.constants = type.getEnumConstants();
        }

        @Override
        public E map(ResultSet r, int columnNumber, StatementContext ctx) throws SQLException {
            int ordinal = r.getInt(columnNumber);
            return r.wasNull() ? null : constants[ordinal];
        }
    }
}

@@ -732,16 +732,143 @@
 entMap;%0A
+import java.util.concurrent.TimeUnit;%0A%0Aimport net.jodah.expiringmap.ExpirationPolicy;%0Aimport net.jodah.expiringmap.ExpiringMap;
 %0Aimport 
@@ -1079,24 +1079,276 @@
 Mapper%3CE%3E %7B%0A
+    private static final ExpiringMap%3CClass%3C? extends Enum%3C?%3E%3E, ColumnMapper%3C?%3E%3E NAME_CACHE = ExpiringMap.builder()%0A                .expiration(10, TimeUnit.MINUTES)%0A                .expirationPolicy(ExpirationPolicy.ACCESSED)%0A                .build();%0A
     EnumMapp
@@ -1509,32 +1509,67 @@
 name()%7D%0A     */%0A
+    @SuppressWarnings(%22unchecked%22)%0A
     public stati
@@ -1640,24 +1640,80 @@
       return
+ (ColumnMapper%3CE%3E) NAME_CACHE.computeIfAbsent(type, e -%3E
  new ByName%3C
@@ -1711,32 +1711,33 @@
 w ByName%3C%3E(type)
+)
 ;%0A    %7D%0A%0A    /**

Fix enum case insensitive matching to actually work