import javax.sql.DataSource;
import java.util.Map;

/**
 * Interface to provide a way to create and configure a DataSource for iBATIS
 */
public interface DataSourceFactory {

  /**
   * Simple method to initialize/configure a datasource
   *
   * @param map - the configuration information
   */
  public void initialize(Map map);

  /**
   * Returns a datasource
   *
   * @return an implementation of DataSource
   */
  public DataSource getDataSource();

}

目的是很明确,只需要解决初始化和get两个方法,第一个是真正的参数初始化方法,后一个是系统得到ds对象的方法,目标明确了,这样下一步操作就简单了,看我写的:

public class C3p0DataSource implements DataSourceFactory {
 /**
  * Logger for this class
  */
 private static final Logger logger = Logger.getLogger(C3p0DataSource.class);

 private DataSource ds;

 private static final String DB_URL = "JDBC.ConnectionURL";

 private static final String DB_USER = "JDBC.Username";

 private static final String DB_PASS = "JDBC.Password";

 private static final String DB_DRIVER = "JDBC.Driver";

 private String dbUrl;

 private String dbUser;

 private String dbPass;

 private String dbDriver;

 public C3p0DataSource() {
  logger.info("start for c3p0 ds");
 }

 @Override
 public DataSource getDataSource() {
  // TODO Auto-generated method stub
  return this.ds;
 }

 @Override
 public void initialize(Map map) {
  // TODO Auto-generated method stub
  this.setDbUrl(String.valueOf(map.get(C3p0DataSource.DB_URL)));
  this.setDbUser(String.valueOf(map.get(C3p0DataSource.DB_USER)));
  this.setDbPass(String.valueOf(map.get(C3p0DataSource.DB_PASS)));
  this.setDbDriver(String.valueOf(map.get(C3p0DataSource.DB_DRIVER)));
  try {
   Class.forName(this.getDbDriver());
  } catch (ClassNotFoundException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }

  try {
   this.ds = DataSources.unpooledDataSource(this.getDbUrl(), this
     .getDbUser(), this.getDbPass());
   this.ds = DataSources.pooledDataSource(this.ds);
  } catch (SQLException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
 }

}

测试已经能正常工作了^^准备休息,累了...

import java.io.IOException;
import java.util.ArrayList;
import java.util.BitSet;
import java.util.List;

import org.apache.lucene.index.IndexReader;
import org.apache.lucene.search.Filter;

/**
* @author edward pro
*
*/
public class MultiFilter extends Filter {

/**
*
*/

private List<Filter> filterList = new ArrayList<Filter>();

public List<Filter> getFilterList() {
return filterList;
}

public void setFilterList(List<Filter> filterList) {
this.filterList = filterList;
}

public MultiFilter() {
// TODO Auto-generated constructor stub
}

/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.Filter#bits(org.apache.lucene.index.IndexReader)
*/
@Override
public BitSet bits(IndexReader reader) throws IOException {
// TODO Auto-generated method stub
BitSet bits = new BitSet(reader.maxDoc());
for (Filter filter : this.filterList) {
BitSet tBits = filter.bits(reader);
bits.and(tBits);

}
return bits;
}

public void addFilter(Filter filter) {
this.filterList.add(filter);
}

}