http://jdbi.org/: jdbi is designed to provide convenient tabular data access in Java(tm). It uses the Java collections framework for query results, provides a convenient means of externalizing sql statements, and provides named parameter support for any database being used. 
/*
 * 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.statement;

import com.github.benmanes.caffeine.cache.Caffeine;
import com.github.benmanes.caffeine.cache.LoadingCache;
import com.github.benmanes.caffeine.cache.stats.CacheStats;
import org.jdbi.v3.meta.Beta;

abstract class CachingSqlParser implements SqlParser {
    private final LoadingCache<String, ParsedSql> parsedSqlCache;

    CachingSqlParser() {
        this(Caffeine.newBuilder()
                     .maximumSize(1_000));
    }

    CachingSqlParser(Caffeine<Object, Object> cache) {
        parsedSqlCache = cache.build(this::internalParse);
    }

    @Override
    public ParsedSql parse(String sql, StatementContext ctx) {
        try {
            return parsedSqlCache.get(sql);
        } catch (IllegalArgumentException e) {
            throw new UnableToCreateStatementException("Exception parsing for named parameter replacement", e, ctx);
        }
    }

    @Beta
    public CacheStats cacheStats() {
        return parsedSqlCache.stats();
    }

    abstract ParsedSql internalParse(String sql);
}