SqlSourceBuilder.java

/*
 *    Copyright 2009-2025 the original author or authors.
 *
 *    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
 *
 *       https://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.ibatis.builder;

import java.util.List;
import java.util.StringTokenizer;

import org.apache.ibatis.mapping.ParameterMapping;
import org.apache.ibatis.mapping.SqlSource;
import org.apache.ibatis.session.Configuration;

/**
 * @author Clinton Begin
 */
public class SqlSourceBuilder {

  private SqlSourceBuilder() {
    super();
  }

  public static SqlSource buildSqlSource(Configuration configuration, String sql,
      List<ParameterMapping> parameterMappings) {
    return new StaticSqlSource(configuration,
        configuration.isShrinkWhitespacesInSql() ? SqlSourceBuilder.removeExtraWhitespaces(sql) : sql,
        parameterMappings);
  }

  public static String removeExtraWhitespaces(String original) {
    StringTokenizer tokenizer = new StringTokenizer(original);
    StringBuilder builder = new StringBuilder();
    boolean hasMoreTokens = tokenizer.hasMoreTokens();
    while (hasMoreTokens) {
      builder.append(tokenizer.nextToken());
      hasMoreTokens = tokenizer.hasMoreTokens();
      if (hasMoreTokens) {
        builder.append(' ');
      }
    }
    return builder.toString();
  }

}