querymethods.QueryMethodsHelper Maven / Gradle / Ivy

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package querymethods;

import static org.apache.ibatis.mapping.SqlCommandType.DELETE;
import static org.apache.ibatis.mapping.SqlCommandType.SELECT;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.ibatis.builder.annotation.ProviderSqlSource;
import org.apache.ibatis.mapping.BoundSql;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.mapping.SqlCommandType;
import org.apache.ibatis.mapping.SqlSource;
import org.apache.ibatis.reflection.MetaObject;
import org.apache.ibatis.reflection.SystemMetaObject;
import org.apache.ibatis.scripting.xmltags.DynamicSqlSource;
import org.apache.ibatis.scripting.xmltags.XMLLanguageDriver;
import org.apache.ibatis.session.Configuration;

import querymethods.util.SqlUtil;

/**
 * 查询方法帮助类，通过方法名称动态的生成sql
 * 
 * @author OYGD
 *
 */
public class QueryMethodsHelper {

  protected final static Log logger = LogFactory.getLog(QueryMethodsHelper.class);

  private QueryMethodsHelper() {}

  private static final Map queryMethod = new HashMap<>();

  private static final Map deleteMethod = new HashMap<>();

  public static boolean isQueryMethods(String msId) {
    return queryMethod.containsKey(msId);
  }

  public static boolean isDeleteMethods(String msId) {
    return deleteMethod.containsKey(msId);
  }

  /**
   * 对已经注册的Mapper文件做处理，如果方法上使用了@Select("")注册并且sql为空字符串时就会动态创建sql 

   * 处理configuration中全部的MappedStatement
   * 
   * @param configuration
   * @param mapperHelper
   */
  public static void processConfiguration(Configuration configuration) {
    processConfiguration(configuration, null);
  }

  /**
   * 配置指定的接口
   *
   * @param configuration
   * @param mapperInterface
   */
  public static void processConfiguration(Configuration configuration, Class mapperInterface) {
    String prefix;
    if (mapperInterface != null) {
      prefix = mapperInterface.getCanonicalName();
    } else {
      prefix = "";
    }
    for (Object object : new ArrayList