视图用法1
分析总结
1. 会员积分变化处理(使用4个视图)
会员表:
CREATE TABLE store_member
(
client_name character varying(255), 会员姓名
client_id character varying(255), 会员ID
init_pts bigint, 初始积分
available_pts bigint, 可用积分
total_pts bigint, 总积分
balance double precision, 账上余额
)
会员积分变化表:
CREATE TABLE member_pts_record
(
member_id character varying(50) NOT NULL, 会员ID
business_type character varying(50), 业务类型
record_type integer, 记录类型
total_points integer, 总积分(获得的积分)
used_points integer, 使用积分
)
<1>怎样修改会员的可用积分和总积分
MemberPtsSumupView对应的视图为:
CREATE OR REPLACE VIEW view_class_pts_sumup AS
SELECT p.client_id, p.total_pts, p.available_pts, p.new_total_pts, p.new_vailable_pts
FROM view_temp_pts_sumup_2 p
WHERE p.total_pts <> p.new_total_pts OR p.available_pts <> p.new_vailable_pts;
if (UnitInfoUtil.isThisHeadQuarter())—会员积分在总店进行
Session s = m_factory.openSession();
String query = "from MemberPtsSumupView ";
List list = s.createQuery(query).list();
//first update points
if (null != list && list.size() > 0) {
String idList = "(";
Transaction tx = s.beginTransaction();
try {
int total = 0;
for (int i = 0; i < list.size(); i++) {
MemberPtsSumupView info = (MemberPtsSumupView) list.get(i);
idList = idList + "'" + info.getMemberID() + "',";
String update = "update StoreMember"
+ " o set o.availablePoints="
+ info.getNewAvailabePointes()
+ ",o.totalPoints=" + info.getNewTotalPoints()
+ ",o.lastModifyTime=:time "
+ ",o.dataOwner=:owner "
+ " where o.clientID='" + info.getMemberID()
+ "'";
Query cmd = s.createQuery(update);
// update the last update time
cmd.setTimestamp("time", new Timestamp(System
.currentTimeMillis()));
// set dataOwner here
cmd.setString("owner", UnitInfoUtil.getThisUnitCode());
int num = cmd.executeUpdate();
total = total + num;
}
tx.commit();
m_logger
.info("update by MemberPtsSumupView,number updated="
+ total);
} catch (Exception ex) {
tx.rollback();
logException(ex);
}
(统计会员表和会员积分变化表
新的总积分=新总积分+初始化积分
新的可用积分=新的总积分+初始化积分-新的使用积分
)
CREATE OR REPLACE VIEW view_temp_pts_sumup_2 AS
SELECT p.client_id, p.total_pts, p.init_pts, p.available_pts, p.new_total_pts + p.init_pts AS new_total_pts, p.new_total_pts + p.init_pts - p.new_used_pts AS new_vailable_pts
FROM view_temp_pts_sumup p;
CREATE OR REPLACE VIEW view_temp_pts_sumup AS
SELECT o.client_id, o.total_pts, o.init_pts, o.available_pts,
CASE
WHEN p.new_total_pts IS NULL THEN 0::bigint
ELSE p.new_total_pts
END AS new_total_pts,
CASE
WHEN p.new_used_pts IS NULL THEN 0::bigint
ELSE p.new_used_pts
END AS new_used_pts
FROM store_member o
LEFT JOIN view_temp_pts_groupby p ON p.member_id::text = o.client_id::text;
(
计算 会员积分变化表
<1>统计会员的使用积分作为新的使用积分
<2>统计会员的总积分(会员获取的积分)做为新的总积分(总的会员获取积分)
)
CREATE OR REPLACE VIEW view_temp_pts_groupby AS
SELECT p.member_id ,sum(p.used_points) AS new_used_pts, sum(p.total_points) AS new_total_pts
FROM member_pts_record p
GROUP BY p.member_id;
2/会员的储值卡平衡(使用3个视图)
会员储值卡变化表
CREATE TABLE account_change_table
(
refer_order_number character varying(50), 引用的订单
business_type character varying(50), 业务类型
action_type character varying(50), 变化类型
member_id character varying(50), 会员ID
change_amount double precision, 变化量
)
if (UnitInfoUtil.isThisHeadQuarter()) {
Session s = m_factory.openSession();
Transaction tx = s.beginTransaction();
try {
String query = "from AccountChangeRecordView ";
List members = s.createQuery(query).list();
if (null != members && members.size() > 0) {
for (int i = 0; i < members.size(); i++) {
AccountChangeRecordView view = (AccountChangeRecordView) members
.get(i);
String memberQuery = "from StoreMember o where o.clientID='"
+ view.getMemberID() + "'";
List list = s.createQuery(memberQuery).list();
StoreMember member = (StoreMember) list.get(0);
member.setBalance(view.getRealBalance());
Timestamp modifyTime = new Timestamp(System
.currentTimeMillis());
member.setLastModifyTime(modifyTime);
// set data owner
member.setDataOwner(UnitInfoUtil.getThisUnitCode());
// increase copy version.
member.increaseCopyVersion();
s.saveOrUpdate(member);
}
}
tx.commit();
if (null != members && members.size() > 0) {
m_logger
.info("update by AccountChangeRecordView,number updated="
+ members.size());
}
} catch (Exception ex) {
tx.rollback();
logException(ex);
}
s.close();
}
AccountChangeRecordView对应的视图:
CREATE OR REPLACE VIEW view_class_member_balance_checker AS
SELECT p.member_id, p.balance, p.real_balance
FROM view_temp_member_balance_checker_2 p
WHERE abs(p.balance - p.real_balance) > 0.1::double precision;
CREATE OR REPLACE VIEW view_temp_member_balance_checker_2 AS
SELECT p.client_id AS member_id,
CASE
WHEN p.balance IS NULL THEN 0::double precision
ELSE p.balance
END AS balance,
CASE
WHEN k.real_balance IS NULL THEN 0::double precision
ELSE k.real_balance
END AS real_balance
FROM store_member p
LEFT JOIN view_temp_member_balance_checker_1 k ON k.member_id::text = p.client_id::text;
CREATE OR REPLACE VIEW view_temp_member_balance_checker_1 AS
SELECT p.member_id, sum(p.change_amount) AS real_balance
FROM account_change_table p
GROUP BY p.member_id;
会员积分变化和会员储值变化总结:都是采用原始记录表加变化记录表处理。视图的创建基本规则是:
<1>查询 变化记录的 视图
<2>查询 原始记录和变化记录视图的 视图
<3>计算原始记录和变化记录视图的 视图的 视图
<4>筛选符合规则的记录的视图
3处理供应商
-- Table: product_supplier
-- DROP TABLE product_supplier;
CREATE TABLE product_supplier
(
client_name character varying(255),
client_id character varying(255),
credit_amount double precision,
init_bal double precision,
current_bal double precision,
business_amount double precision,
paid double precision,
uppaid double precision,
)
// 5. handle product supplier
if (UnitInfoUtil.isThisHeadQuarter()) {
Session s = m_factory.openSession();
String query = "from ProductSupplierView ";
List list = s.createQuery(query).list();
if (null != list && list.size() > 0) {
Transaction tx = s.beginTransaction();
try {
int total = 0;
for (int i = 0; i < list.size(); i++) {
ProductSupplierView info = (ProductSupplierView) list
.get(i);
Double unpaid = new Double(info.getBusinessAmountReal()
.doubleValue()
- info.getReturnAmountReal().doubleValue());
String update = "update ProductSupplier"
+ " o set o.businessAmount="
+ info.getBusinessAmountReal() + ",o.paid="
+ info.getReturnAmountReal() + ",o.unpaid="
+ unpaid + ",o.currentBal=" + info.getBalReal()
+ ",o.lastModifyTime=:time "
+ ",o.dataOwner=:owner "
+ " where o.clientName='"
+ info.getClientName() + "'";
Query cmd = s.createQuery(update);
// set dataOwner here
cmd.setString("owner", UnitInfoUtil.getThisUnitCode());
// update the last update time
cmd.setTimestamp("time", new Timestamp(System
.currentTimeMillis()));
int num = cmd.executeUpdate();
total = total + num;
}
tx.commit();
m_logger
.info("update by ProductSupplierView,number updated="
+ total);
} catch (Exception ex) {
tx.rollback();
logException(ex);
}
}
s.close();
}
ProductSupplierView对应的视图：
CREATE OR REPLACE VIEW view_class_supplier_sumup AS
SELECT p.client_name, p.business_amount, p.in_amount, p.paid, p.out_amount, p.current_bal, p.real_bal
FROM view_temp_supplier_sumup_2 p
WHERE abs(p.business_amount - p.in_amount) > 0.1::double precision OR abs(p.paid - p.out_amount) > 0.1::double precision OR abs(p.current_bal - p.real_bal) > 0.1::double precision;
CREATE OR REPLACE VIEW view_temp_supplier_sumup_2 AS
SELECT p.client_name, p.business_amount, p.in_amount, p.paid, p.out_amount, p.current_bal, p.init_bal + p.in_amount - p.out_amount + p.out_recieve - p.in_payment AS real_bal
FROM view_temp_supplier_sumup p;
CREATE OR REPLACE VIEW view_temp_supplier_sumup AS
SELECT o.client_name,
CASE
WHEN o.business_amount IS NULL THEN 0::double precision
ELSE o.business_amount
END AS business_amount,
CASE
WHEN o.paid IS NULL THEN 0::double precision
ELSE o.paid
END AS paid,
CASE
WHEN o.init_bal IS NULL THEN 0::double precision
ELSE o.init_bal
END AS init_bal,
CASE
WHEN o.current_bal IS NULL THEN 0::double precision
ELSE o.current_bal
END AS current_bal,
CASE
WHEN a.in_amount IS NULL THEN 0::double precision
ELSE a.in_amount
END AS in_amount,
CASE
WHEN b.out_amount IS NULL THEN 0::double precision
ELSE b.out_amount
END AS out_amount,
CASE
WHEN c.in_payment IS NULL THEN 0::double precision
ELSE c.in_payment
END AS in_payment,
CASE
WHEN d.out_recieve IS NULL THEN 0::double precision
ELSE d.out_recieve
END AS out_recieve
FROM product_supplier o
LEFT JOIN view_temp_inbound_sumup a ON a.parter_name::text = o.client_name::text
LEFT JOIN view_temp_outbound_sumup b ON b.parter_name::text = o.client_name::text
LEFT JOIN view_temp_inbound_payment_sumup c ON c.parter_name::text = o.client_name::text
LEFT JOIN view_temp_outbound_recieve_sumup d ON d.parter_name::text = o.client_name::text;
CREATE OR REPLACE VIEW view_temp_inbound_sumup AS
SELECT o.parter_name, sum(o.amount) AS in_quantity, sum(o.sub_total) AS in_amount
FROM inbound_order_item o
WHERE o.status::text = 'normal'::text
GROUP BY o.parter_name;
总结:基本思想同会员处理积分变化一样.
<1>统计各个订单变化总和。
<2>合并 供应商信息 和 各个订单变化总和
<3>计算合并的
<4>安条件计算出满足条件的视图.
4处理客户信息同供应商处理一样。
5.处理订单支付信息
view_class_payment_info
CREATE OR REPLACE VIEW view_class_payment_info AS
SELECT p.order_number, p.class_name, p.busiess_type, p.amount, p.paid, p.paid_real
FROM view_temp_payment_info p
WHERE p.paid <> p.paid_real OR p.paid IS NULL AND p.paid_real IS NOT NULL OR p.paid_real IS NULL AND p.paid IS NOT NULL;
CREATE OR REPLACE VIEW view_temp_payment_info AS
SELECT a.order_number, a.class_name, a.busiess_type, a.amount, a.paid, b.paid_real
FROM viewpayquery_temp_payable_detail a
LEFT JOIN viewpayquery_temp_paid_detail b ON b.refer_order_number::text = a.order_number::text;
CREATE OR REPLACE VIEW viewpayquery_temp_payable_detail AS
(( SELECT a.order_number, a.busiess_type, 'InboundOrder' AS class_name, a.amount, a.paid
FROM inbound_order a
WHERE a.status::text = 'normal'::text
UNION ALL
SELECT a.order_number, a.busiess_type, 'WholesaleOrderReturn' AS class_name, a.amount, a.paid
FROM wholesale_order_return a
WHERE a.status::text = 'normal'::text)
UNION ALL
SELECT a.order_number, a.busiess_type, 'OutboundOrder' AS class_name, a.amount, a.paid
FROM outbound_order a
WHERE a.status::text = 'normal'::text)
UNION ALL
SELECT a.order_number, a.busiess_type, 'WholesaleOrder' AS class_name, a.amount, a.paid
FROM wholesale_order a
WHERE a.status::text = 'normal'::text;
CREATE OR REPLACE VIEW viewpayquery_temp_paid_detail AS
(( SELECT a.refer_order_number, sum(a.payment) AS paid_real
FROM inbound_payment_item a
WHERE a.status::text = 'normal'::text
GROUP BY a.refer_order_number
UNION ALL
SELECT a.refer_order_number, sum(a.payment) AS paid_real
FROM wholesale_return_payment_item a
WHERE a.status::text = 'normal'::text
GROUP BY a.refer_order_number)
UNION ALL
SELECT a.refer_order_number, sum(a.payment) AS paid_real
FROM outbound_recieve_item a
WHERE a.status::text = 'normal'::text
GROUP BY a.refer_order_number)
UNION ALL
SELECT a.refer_order_number, sum(a.payment) AS paid_real
FROM wholesale_recieve_item a
WHERE a.status::text = 'normal'::text
GROUP BY a.refer_order_number;