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開發常用文件

posted @ 2011-08-11 23:05 mashiguang| 編輯收藏

hibernate DetachedCriteria的使用

public PageModel<CrmWarning> query(PageModel<CrmWarning> pageModel)
            throws Exception {
        Assert.notNull(pageModel);

        DetachedCriteria dc = DetachedCriteria.forClass(CrmWarning.class);

        /*
         * 添加查詢條件
         * 如:dc.add(Restrictions.like("key", "%"+pageModel.getCondition("key")+"%"));
         *
         * */
        if (null != pageModel.getCondition("warnLevel")) {
            dc.add(Restrictions.eq("warnLevel", pageModel.getCondition("warnLevel")));
        }
        if (StringUtils.isNotBlank((String)pageModel.getCondition("detail"))) {
            dc.add(Restrictions.like("detail", "%"+pageModel.getCondition("detail")+"%"));
        }
        if (StringUtils.isNotBlank((String)pageModel.getCondition("warnDate"))) {
            /*
             * warnDate格式是yyyy-MM-dd，這里改成查詢這一天的預警
             * Restrictions.sqlRestriction()允許寫原生sql的方式完成特殊需求，如下
             * */
            dc.add(Restrictions.sqlRestriction("to_char(time_start,'yyyy-MM-dd') = '" + pageModel.getCondition("warnDate") + "'"));
        }
        if (null != pageModel.getCondition("templateId")) {
            /*
             * 這里的templateId是模板的主鍵id,查詢時應該轉換成模板對象
             * */
            CrmWarnTemplate warnTemplate = new CrmWarnTemplate();
            warnTemplate.setTemplateId((Long)pageModel.getCondition("templateId"));
            dc.add(Restrictions.eq("crmWarnTemplate", warnTemplate));
        }

        dc.addOrder(Order.asc("crmWarnTemplate"));
        dc.addOrder(Order.desc("timeStart"));

        pageModel.setDateList(warningDao.query(dc, pageModel.getFirstNote(), pageModel.getNumInPage()));
        pageModel.setTotal(warningDao.count(dc));

        return pageModel;
    }

posted @ 2011-08-11 22:50 mashiguang| 編輯收藏

hibernate手動組裝pojo

package com.jl.dao.bookplatform.impl;

import java.util.List;

import org.hibernate.Hibernate;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.transform.Transformers;
import org.springframework.dao.DataAccessException;

import com.jl.dao.baseDao.GenericDao;
import com.jl.dao.bookplatform.ProductItemDao;
import com.jl.entity.bookplatform.CrmProduct;
import com.jl.entity.bookplatform.CrmProductItem;
import com.jl.entity.bookplatform.ProductItemConfig;

public class ProductItemDaoImpl extends GenericDao<CrmProductItem, Long> implements ProductItemDao {


    public List<ProductItemConfig> getProductItemConfigs(Long productId, Long planetypeId) throws DataAccessException{
        String sql = "select chi.charge_item_id \"chargeItemId\"," +
                " chi.charge_item \"chargeItem\"," +
                " chi.charge_unit \"chargeUnit\"," +
                " cpi.product_id \"productId\"," +
                " cpi.product_item_id \"productItemId\"," +
                " cpi.sale_planetype_id \"salePlanetypeId\"," +
                " cpi.inland_price \"inlandPrice\"," +
                " cpi.outland_price \"outlandPrice\"" +
                " from (select * from crm_charge_item chi2 where chi2.if_regular = 1) chi left join crm_product_item cpi" +
                " on cpi.charge_item_id = chi.charge_item_id " +
                " and cpi.product_id = ?" +
                " and cpi.sale_planetype_id = ?" +
                " order by chi.charge_item_id";

        Session session = getSession();
        Query query = session.createSQLQuery(sql)
            .addScalar("chargeItemId", Hibernate.LONG)
            .addScalar("chargeItem",Hibernate.STRING)
            .addScalar("chargeUnit",Hibernate.STRING)
            .addScalar("productId",Hibernate.LONG)
            .addScalar("productItemId",Hibernate.LONG)
            .addScalar("salePlanetypeId",Hibernate.LONG)
            .addScalar("inlandPrice",Hibernate.DOUBLE)
            .addScalar("outlandPrice",Hibernate.DOUBLE)
            .setResultTransformer(Transformers.aliasToBean(ProductItemConfig.class))
            .setParameter(0, productId)
            .setParameter(1, planetypeId);

        List<ProductItemConfig> configs = query.list();

        return configs;
    }

    public List<CrmProductItem> getProductItem(CrmProduct product) throws DataAccessException {

        String hql = "from CrmProductItem cpi where cpi.crmProduct = ?";
        Session session = getSession();
        Query query = session.createSQLQuery(hql).setParameter(0, product);

        List<CrmProductItem> items = query.list();
        return items;
    }

    public void copy(Long productId_dest,Long productId_orig,String createMan) throws DataAccessException {
        String sql = "insert into crm_product_item " +
                " select hibernate_sequence.nextval," +
                " ?," +
                " cpi.charge_item_id," +
                " cpi.sale_planetype_id," +
                " cpi.inland_price," +
                " cpi.outland_price," +
                " ?," +
                " sysdate" +
                " from crm_product_item cpi" +
                " where cpi.product_id = ?";

        Session session = getSession();
        Query sqlQuery = session.createSQLQuery(sql)
                        .setParameter(0, productId_dest)
                        .setParameter(1, createMan)
                        .setParameter(2, productId_orig);
        sqlQuery.executeUpdate();
    }


}

posted @ 2011-08-11 22:25 mashiguang| 編輯收藏

tomcat eclipse遠程調試

1，配置tomcat啟動參數
直接在%tomcat_home%\bin下建立tomcat_debug.bat文件，內容如下：

cd %CATALINE_HOME%/bin
set JPDA_ADDRESS=8787
set JPDA_TRANSPORT=dt_socket
set CATALINA_OPTS=-server -Xdebug -Xnoagent -Djava.compiler=NONE -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=8787
startup

需要遠程調試時從tomcat_debug.bat啟動。

2，eclipse調試
選擇菜單"Run>Debug..."，彈出窗口里右鍵點擊"Remote Java Application"，選擇"New"，如圖：

點擊"Debug"按鈕，開始遠程調試，當程序運行到斷點時，Eclipse會捕獲到。

有關普通java app的遠程調試可以參考http://blog.chenlb.com/2010/07/eclipse-remoting-debug-java-app.html

posted @ 2011-02-26 17:39 mashiguang 閱讀(455) | 評論 (2) | 編輯收藏

jQuery validate 日期比較自定義驗證方法

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
  <TITLE> New Document </TITLE>
  <META NAME="Generator" CONTENT="EditPlus">
  <META NAME="Author" CONTENT="">
  <META NAME="Keywords" CONTENT="">
  <META NAME="Description" CONTENT="">
  <script type="text/javascript" src="jquery-1.4.2.js"></script>
  <script type="text/javascript" src="jquery.validate.js"></script>
  <SCRIPT LANGUAGE="JavaScript">
  
  </SCRIPT>
</HEAD>

<BODY>
<form id="form1" name="form1" method="post" action="demo.html">
   <p>timeStart:
     <input name="timeStart" type="text" id="timeStart" value="2011-02-17 10:00:00"> yyyy-MM-dd HH:mm:ss
   </p>
   <p>timeEnd:
     <input name="timeEnd" type="text" id="timeEnd" value="2011-02-17 9:00:00"> yyyy-MM-dd HH:mm:ss
   </p>
   <p>
     <input type="submit" name="Submit" value="提交">
   </p>
</form>

</BODY>
</HTML>

posted @ 2011-02-17 10:34 mashiguang 閱讀(11934) | 評論 (9) | 編輯收藏

關于Oracle一個漢字代表幾個字節的問題（轉）

在Oracle定義變量時，常有VARCHAR2 (3 Char)或者VARCHAR2 (10 Byte)的數據類型，那么3char或者10Byte到底代表幾個漢字，幾個字符呢，上次外公司一同事討論這個問題，一下沒給解釋清楚，所以下來以后整理如下：

總結：
當NLS_CHARACTERSET=AL32UTF8時（）
NLS_LENGTH_SEMANTICS=BYTE時，一個漢字代表三個字節
NLS_LENGTH_SEMANTICS=CHAR時，一個漢字代表一個字節
當NLS_CHARACTERSET=US7ASCII時（字符集為單字節）
NLS_LENGTH_SEMANTICS=BYTE時，一個漢字代表兩個字節
NLS_LENGTH_SEMANTICS=CHAR時，一個漢字代表兩個字節

現象:
select * from nls_database_parameters;
…. …………..
NLS_CHARACTERSET AL32UTF8

…..

NLS_LENGTH_SEMANTICS BYTE

….

NLS_NCHAR_CHARACTERSET AL16UTF16

NLS_RDBMS_VERSION 10.2.0.4.0

SQL> alter session set nls_length_semantics='BYTE';

SQL> create table nls_byte(c1 varchar2(7));

SQL> insert into nls_byte values('測試機');

insert into nls_byte values('測試機')

ORA-12899: 列 "SYS"."NLS_BYTE"."C1" 的值太大 (實際值: 9, 最大值: 7)

SQL> insert into nls_byte values('測試a');

1 row inserted

SQL> select table_name,column_name,t.DATA_TYPE,t.DATA_LENGTH,t.CHAR_USED from user_tab_columns t where table_name='NLS_BYTE';

TABLE_NAME COLU DATA_TYP DATA_LENGTH CHAR_USED

---------- ---- -------- ----------- ---------

NLS_BYTE C1 VARCHAR2 7 B

NLS_LENGTH_SEMANTICS allows you to specify the length of a column datatype in terms of CHARacters rather than in terms of BYTEs. Typically this is when using an AL32UTF8 or other varying width NLS_CHARACTERSET database where one character is not always one byte. While using CHAR semantics has as such no added value in a 7/8 bit characterset it's fully supported so any application code / table setup using CHAR can also be used in a 7/8bit characterset like US7ASCII/WE8MSWIN1252.
This parameter is a 9i (and up) feature and is not available in older releases

翻譯過來就是:這個參數允許將列的數據單位設為字符而不是byte.這個問題會在字符集設為UTF8的時候出現. 此參數在9i以上版本有效.

NLS_LENGTH_SEMANTICS 設置.

1. NLS_DATABASE_PARAMETERS中的值是在數據庫創建的時候確定的,一般都為BYTE

2. 此參數可以以 “ALTER SYSTEM SET NLS_LENGTH_SEMANTICS=CHAR scope=both”方式修改,但是需要重啟數據庫才能生效.

3. 也可用” ALTER SESSION SET NLS_LENGTH_SEMANTICS=CHAR”使對當前session生效.

4. 此參數可以在10G以上版本中,在環境變量或注冊表中設置(注意需要大寫),設定后從當前客戶端啟動的所有會話都采用新的取值.

5. 修改后只對新建的列生效,對于已有的列沒有作用

6. 新建或升級DB時用BYTE,否則XDB或dba_tables會出現問題.

7. NLS_LENGTH_SEMANTICS對sys用戶下的對象無效.

8. 如果對于7/8bit的字符集,設為byte/char意義不大,因為無論是char和byte都對應一個byte.

測試:

一.在當前session中修改此參數

SQL> alter session set nls_length_semantics='char';

Session altered

SQL> create table nls_char(c1 varchar2(7),c2 varchar2(7));

Table created

SQL> desc nls_char

Name Type Nullable Default Comments

---- ----------- -------- ------- --------

C1 VARCHAR2(7) Y

C2 VARCHAR2(7) Y

SQL> insert into nls_char values('測試機','測試測試測試');

1 row inserted

如果對于alter system,效果是一樣的

二.對于已經存在的表,

SQL> desc nls_byte

Name Type Nullable Default Comments

---- ---------------- -------- ------- --------

C1 VARCHAR2(7 BYTE) Y

SQL> alter table nls_byte modify c1 varchar2(7 char);

Table altered

SQL> desc nls_byte

Name Type Nullable Default Comments

---- ----------- -------- ------- --------

C1 VARCHAR2(7) Y

SQL> insert into nls_byte values('測試機');

1 row inserted

1. exp/imp : 不能直接導入,因為會采用source table的建表方式在target db里建表,即使目標庫設的值為char.

*可以預先在目標庫中以char方式建表

*然后導入,指定參數ignore=y

2. Alter table

alter table "<owner>"."<table>" modify "<column>" char (10 char);

創建腳本,修改列設定.

注:

Bug-3611750, ora-01450 online rebuild of index fails, 可以在重建索引前指定byte, 10.2.0.5以上已經修復

Bug 1488174 UNICODE: ALTER SYSTEM SET NLS_LENGTH_SEMANTICS DOESN'T
TAKE EFFECT, 用此語句修改后,實際上不起作用,需要重啟才能生效, 但是如果用alter session方式即時生效,不用重啟.

進一步測試,在另一個字符集設為us7ascii的DB設置此參數

SQL> select * from nls_database_parameters

6 NLS_CHARACTERSET US7ASCII

SQL> alter session set nls_length_semantics=byte;

Session altered.

SQL> create table nls_byte(c1 varchar2(7));

Table created.

SQL> insert into nls_byte values('測試測試');

insert into nls_byte values('測試測試')

ERROR at line 1:

ORA-12899: value too large for column "TEA"."NLS_BYTE"."C1" (actual: 8,

maximum: 7)

SQL> desc nls_byte

Name Null? Type

-------------------------------

C1 VARCHAR2(7)

SQL> alter session set nls_length_semantics=char;

Session altered.

SQL> create table nls_char(c1 varchar2(7));

Table created.

SQL> insert into nls_char values('測試測試');

insert into nls_char values('測試測試')

ERROR at line 1:

ORA-12899: value too large for column "TEA"."NLS_CHAR"."C1" (actual: 8,

maximum: 7)

SQL> desc nls_char

Name Null? Type

----------------------------------------- -------- -------------------

C1 VARCHAR2(7)

可以看出,在字符集為單字節的情況下,無論取何值,漢字都是以二個字節的方式存在的.

本文轉自http://www.wudeyao.com/post-69.html

posted @ 2011-01-21 12:49 mashiguang 閱讀(1414) | 評論 (0) | 編輯收藏

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