demo-db-access/src/main/java/com/fr/conf/db/demo/fun/http/OutputHttpHandler.java

package com.fr.conf.db.demo.fun.http;

import com.fanruan.api.net.NetworkKit;
import com.fr.conf.db.demo.SystemConfigAccessBridge;
import com.fr.conf.db.demo.fun.SystemConfigDAO;
import com.fr.conf.db.demo.fun.entity.SystemConfigEntity;
import com.fr.decision.fun.impl.BaseHttpHandler;
import com.fr.stable.db.action.DBAction;
import com.fr.stable.db.dao.DAOContext;
import com.fr.stable.query.condition.impl.QueryConditionImpl;
import com.fr.stable.query.restriction.RestrictionFactory;
import com.fr.third.springframework.web.bind.annotation.RequestMethod;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.PrintWriter;
import java.util.List;

public class OutputHttpHandler extends BaseHttpHandler {
    @Override
    public RequestMethod getMethod() {
        return RequestMethod.GET;
    }

    @Override
    public String getPath() {
        return "/db/output";
    }

    @Override
    public boolean isPublic() {
        return false;
    }

    @Override
    public void handle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws Exception {
        List<SystemConfigEntity> entities = SystemConfigAccessBridge.getDbAccessor().runQueryAction(new DBAction<List<SystemConfigEntity>>() {

            @Override
            public List<SystemConfigEntity> run(DAOContext daoContext) throws Exception {
                // 查询收入大于10000的人
                return daoContext.getDAO(SystemConfigDAO.class).find(new QueryConditionImpl().addRestriction(RestrictionFactory.gte("salary", 10000.0)));
            }
        });
        PrintWriter writer = NetworkKit.createPrintWriter(httpServletResponse);
        writer.println("The people who's salary is more than 10000:<br/>");
        for (SystemConfigEntity entity : entities) {
            writer.println(entity.toString());
            writer.println("<br/>");
        }
        writer.flush();
        writer.close();
    }
}