jh-common-dataaccess
Version:
common-dataaccess
251 lines (249 loc) • 6.55 kB
JavaScript
const DsParams = require('./DsParams');
const DataAccess = require('./DataAccess');
const TransParams = require('./TransParams');
const OperationEnum = require('./OperationEnum');
module.exports = class Public {
constructor(dbconf, tbconf) {
this.dbconf = dbconf;
this.tbconf = {};
Object.keys(tbconf).forEach(key => {
this.tbconf[key] = tbconf[key];
});
this.ds = new DataAccess(this.dbconf);
}
/**
* 生成参数化SQL语句
* @param {*} obj 实体类/实体类数组
* @param {*} operationType 操作类型
*/
operationSQLParams(obj, operationType) {
let tableName = '';
let pkNames = '';
if (obj instanceof Array) {
if (obj.length > 0) {
tableName = this.tbconf[obj[0].constructor.name].name;
pkNames = this.tbconf[obj[0].constructor.name].pk;
} else {
return null;
}
} else {
tableName = this.tbconf[obj.constructor.name].name;
pkNames = this.tbconf[obj.constructor.name].pk;
obj = [obj];
}
switch (operationType) {
case OperationEnum.Create:
return this.insertSQLParams(obj, tableName);
break;
case OperationEnum.Delete:
return this.deleteSQLParams(obj, tableName, pkNames);
break;
case OperationEnum.Update:
return this.updateSQLParams(obj, tableName, pkNames);
break;
case OperationEnum.UpdateNoCheck:
return this.updateNoCheckSQLParams(obj, tableName, pkNames);
break;
default:
return null;
break;
}
}
/**
* 插入数据
* @param {*} objlist 实体类
* @param {*} tableName 表名
*/
insertSQLParams(objlist, tableName) {
const tparams = new TransParams();
const params = [];
const row = [];
const column = [];
tableName = tableName || '';
const cdField = this.tbconf[objlist[0].constructor.name].cd;
const udField = this.tbconf[objlist[0].constructor.name].ud;
objlist.forEach((obj, index) => {
if (typeof obj === 'object') {
if (cdField) {
obj[cdField] = new Date();
}
if (udField) {
obj[udField] = new Date();
}
column.push(' ( ');
Object.keys(obj).forEach(pf => {
if (![null, undefined].includes(obj[pf])) {
if (index === 0) {
row.push(this.ds.packCaseLow(pf), ' , ');
}
column.push('@' + index + '_' + pf, ' , ');
params.push(
new DsParams({
paramsname: index + '_' + pf,
paramsvalue: obj[pf],
})
);
}
});
if (index === 0) {
row.pop();
}
column.pop();
column.push(' ) ', ' , ');
}
});
row.unshift('insert into ' + this.ds.packCaseLow(tableName) + ' ( ');
row.push(' ) ', ' values ');
column.pop();
tparams.set({
sql: row.join('') + column.join(''),
l_dp: params,
});
return tparams;
}
/**
* 删除数据(物理删除)
* @param {*} objlist
* @param {*} tableName
* @param {*} pkNames
*/
deleteSQLParams(objlist, tableName, pkNames) {
const tparams = new TransParams();
const params = [];
const row = [];
tableName = tableName || '';
objlist.forEach((obj, index) => {
if (typeof obj === 'object') {
const properties = [];
pkNames.split(',').forEach(pk => {
Object.keys(obj).forEach(key => {
if (pk === key) {
properties.push(key);
}
});
});
if (properties.length > 0) {
const filter = [];
const _row = [];
_row.push('delete from ' + this.ds.packCaseLow(tableName) + ' where ');
properties.forEach(pf => {
if (![null, undefined].includes(obj[pf])) {
if (filter.length !== 0) {
filter.push(' and ');
}
filter.push(this.ds.packCaseLow(pf) + ' = @' + index + '_' + pf);
params.push(
new DsParams({
paramsname: index + '_' + pf,
paramsvalue: obj[pf],
})
);
}
});
if (filter.length > 0) {
_row.push(filter.join(''));
row.push(_row.join(''), ' ; ');
}
}
}
});
if (row.length === 0) {
return null;
}
tparams.set({
sql: row.join(''),
l_dp: params,
});
return tparams;
}
/**
* 更新数据（内部检查修改时间有效性,loading）
* @param {*} objlist
* @param {*} tableName
* @param {*} pkNames
*/
updateSQLParams(objlist, tableName, pkNames) {
return this.updateNoCheckSQLParams(objlist, tableName, pkNames);
}
/**
* 更新数据，不检查修改时间有效性
* @param {*} objlist
* @param {*} tableName
* @param {*} pkNames
*/
updateNoCheckSQLParams(objlist, tableName, pkNames) {
const tparams = new TransParams();
const params = [];
const row = [];
tableName = tableName || '';
const cdField = this.tbconf[objlist[0].constructor.name].cd;
const udField = this.tbconf[objlist[0].constructor.name].ud;
objlist.forEach((obj, index) => {
if (typeof obj === 'object') {
const properties = Object.keys(obj);
if (udField) {
obj[udField] = new Date();
}
if (properties.length > 0) {
const filter = [];
const _row = [];
_row.push('update ' + this.ds.packCaseLow(tableName) + ' set ');
properties.forEach(pf => {
if (![null, undefined].includes(obj[pf])) {
if (pkNames.includes(pf)) {
if (filter.length == 0) {
filter.push(' where ' + this.ds.packCaseLow(pf) + ' = @' + index + '_' + pf);
} else {
filter.push(' and ' + this.ds.packCaseLow(pf) + ' = @' + index + '_' + pf);
}
params.push(
new DsParams({
paramsname: index + '_' + pf,
paramsvalue: obj[pf],
})
);
} else if (![cdField].includes(pf)) {
if ([udField].includes(pf)) {
obj[pf] = new Date();
}
_row.push(this.ds.packCaseLow(pf) + ' = @' + index + '_' + pf, ' , ');
params.push(
new DsParams({
paramsname: index + '_' + pf,
paramsvalue: obj[pf],
})
);
}
}
});
if (filter.length > 0) {
_row.pop();
row.push(_row.join('') + filter.join(''), ' ; ');
}
}
}
});
if (row.length === 0) {
return null;
}
tparams.set({
sql: row.join(''),
l_dp: params,
});
return tparams;
}
/**
* 生成主键
*/
static buildCode() {
var d = new Date().getTime();
var uuid = 'xxxxxxxxxxxxxxxyxxxxxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
var r = (d + Math.random() * 16) % 16 | 0;
d = Math.floor(d / 16);
return (c == 'x' ? r : (r & 0x3) | 0x8).toString(16);
});
return uuid.replace(/((-)|([a-z]))/gi, ($1, $2) => {
return Number.parseInt(Math.random() * 10, 10);
});
}
};