function addMethod(object, name, fn) {
var old = object[name];
object[name] = function() {
if(fn.length === Object.getOwnPropertyNames(arguments[0]).length) {
return fn.apply(this, arguments);
} else if(typeof old === "function") {
return old.apply(this, arguments);
}//Object.getOwnPropertyNames(arguments[0]).length
}
}
var SQL={};
addMethod(SQL, "select", function(table,a) {
var ret = [];//table,join,where
for (var Key in table.where){
console.log(Key+"="+this.values[2][Key]);
}
return ret;
});
addMethod(SQL, "select", function(table,a,b) {
var ret = [];
for(var tab in table.joinl)
{
ret.push(table.joinl[tab]);
}
var sql="SELECT "+ret.join(",")+" FROM "+table.table;
return sql;
});
var people = {
table:"表名",
joinl:["字段1","字段2","字段3"],
where: {
"user_id[=]":"foo",
"user_id[>]":1000,
"user_id[<]":500,
"user_id[!=]":"foo"
}
};
console.log(SQL.select(people));
自动生成sql代码
猜你喜欢
转载自my.oschina.net/KFS/blog/1815389
今日推荐
周排行