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GitHub - 403f/searchjs: So short! So powerful!
searchjs
So short! So powerful! So flexible! You can use the library to filter data easily. And it's very flexible,You can design the chain style which you want.And it's robust,you can change the order of chain-unction as well as no error.
example
<script src="./search.js"></script>
var data = [
{'userId':132,title:'dads'},
{'userId':1312,title:'ddsadads'},
{'userId':12,title:'daddasdass'},
{'userId':1,title:'hghhfg'},
];
var result = findData(data)
.filter(true,
[
'userId','title',
])
.where({
'userId':[
'>=',11
]
})
.orderBy('userId','desc');
for(let i = 0; i < result.length; i++) {
//Log.fire('none','accept',JSON.stringify(result[i]));
console.log(result[i]);
}
you can change the order,for example:
<script src="./search.js"></script>
var data = [
{'userId':132,title:'dads'},
{'userId':1312,title:'ddsadads'},
{'userId':12,title:'daddasdass'},
{'userId':1,title:'hghhfg'},
];
var result = findData(data)
.filter(true,[
'userId','title',
])
.orderBy('userId','desc')
.where({
'userId':[
'>=',11
]
});
for(let i = 0; i < result.length; i++) {
//Log.fire('none','accept',JSON.stringify(result[i]));
console.log(result[i]);
}
you also can del the filter function in anyway by anymethod,for example:
<script src="./search.js"></script>
var data = [
{'userId':132,title:'dads'},
{'userId':1312,title:'ddsadads'},
{'userId':12,title:'daddasdass'},
{'userId':1,title:'hghhfg'},
];
var result = findData(data)
.filter(true,[
'userId','title',
])
.orderBy('userId','desc');
for(let i = 0; i < result.length; i++) {
//Log.fire('none','accept',JSON.stringify(result[i]));
console.log(result[i]);
}
<script src="./search.js"></script>
var data = [
{'userId':132,title:'dads'},
{'userId':1312,title:'ddsadads'},
{'userId':12,title:'daddasdass'},
{'userId':1,title:'hghhfg'},
];
var result = findData(data)
.filter(true,[
'userId','title',
])
.where({
'userId':[
'>=',11
]
});
for(let i = 0; i < result.length; i++) {
//Log.fire('none','accept',JSON.stringify(result[i]));
console.log(result[i]);
}
extend
if you want to extend the function of the library,you must know the principle of the design of this library. Just take the script as a factory,but this factory handle the data which is given by user.Every filter-function like a worker of this factory,they display different roles,but they handle the same data in order position.So the parameter ‘share_data’ is shared by the worker. And the worker use 'this.result.pop()' to get the share_data by pipline.And the worker use 'this.result.push()' to pass the share_data to the next worker.So if you want to extend a function to this library of script is just like employing a mew worker,and you can put it in any position of the pipline.
source code
(function(root) {
function register(env, name, obj) {
if (typeof env[name] == 'object') {
return false;
}
env[name] = obj;
return true;
}
let Log = function() {
let message_type = ['error', 'important', 'warn', 'accept'];
let emptyMsg = {
'funcName': 'none',
'type': 'accept',
'content': 'the default log info',
'time': new Date()
};
let msgs = [];
return {
'put': function(funcName, type, content) {
if (typeof funcName != 'string' || message_type.indexOf(type) < 0 || typeof content != 'string') {
this.fire(funcName, type, content);
return;
}
let msg = {
'funcName': funcName,
'type': type,
'content': content,
'time': new Date()
};
msgs.push(msg);
},
'last': function() {
if (msgs.length < 0) {
return emptyMsg;
}
return msgs.pop();
},
'lastNoDel': function() {
if (msgs.length < 0) {
return emptyMsg;
}
return msgs[msgs.length - 1];
},
'msgToString': function(msg) {
let stream = 'function:' + msg['funcName'] + ';';
stream = stream + 'type:' + msg['type'] + ';';
stream = stream + 'info' + msg['content'] + ';';
stream = stream + 'time' + msg['time'].toDateString() + ';';
return stream;
},
'fire': function(funcName, type, content) {
let find = 0;
message_type.forEach(function(mt) {
if (mt == type) {
find = 1;
}
});
let outputFunc = console.log; (!find ? console.error("the type was error where function name is" + funcName + ";type is:" + type + "log is" + content) : function() {
if (mt == 'error') {
outputFunc = console.error;
} else if (mt == 'warn') {
outputFunc = console.warn;
}
});
this.put(funcName, type, content);
outputFunc(this.msgToString(this.last()));
return;
},
'getLogByFuncName': function(funcName) {
if (typeof funcName != 'string') {
return [];
}
let result = [];
msgs.forEach(function(msg) {
if (msg['funcName'] == funcName) {
result.push(msg);
}
});
return result;
},
'getLogByType': function(type) {
if (typeof type != 'string') {
return [];
}
let result = [];
msgs.forEach(function(msg) {
if (msg['type'] == type) {
result.push(msg);
}
});
return result;
},
'getLogByTime': function(time) {
if (!Array.isArray(time) || time.length != 2) {
return [];
}
let check = true;
time.forEach(function(ti) {
if (! (ti instanceof Date)) {
check = false;
}
});
if (!check) return [];
let result = [];
msgs.forEach(function(msg) {
let mtime = msg['time'].getTime();
if (mtime >= time[0].getTime() && mtime <= time[1].getTime()) {
result.push(msg);
}
});
return result;
},
'flush': function() {
for (let i = 0; i < msgs.length; i++) {
this.fire();
}
},
}
}
Log = new Log();
register(root, 'Log', Log);
let Compare = function() {};
Compare.generalCompare = function(a, op, b) {
switch (op) {
case '>':
return a > b;
break;
case '<':
return a < b;
break;
case '<=':
return a <= b;
break;
case '>=':
return a >= b;
break;
case '=':
return a == b;
break;
default:
return false;
}
};
Compare.baseCompare = function(a, b) {
return a - b;
}
register(root, 'Compare', Compare);
let Hash = function() {
this.hashKey = 'sdadffhttyvhjhgijt';
this.dict = 'abcdefghijklmnopqrstuvwxyz';
this.base = 10;
this.step = 1;
this.scope = 1000;
}
Hash.prototype.formatObj = function(obj) {
let that = this;
if (Array.isArray(obj)) {
obj.sort(Compare.baseCompare);
for (let i = 0; i < obj.length; i++) {
that.formatObj(obj[i]);
}
} else if (typeof obj == 'object') {
let obj_keys = Object.keys(obj);
obj_keys.sort(Compare.baseCompare);
let tmp_obj = {};
for (let i = 0; i < obj_keys.length; i++) {
tmp_obj[obj_keys[i]] = obj[obj_keys[i]];
that.formatObj(tmp_obj[obj_keys[i]]);
}
obj = tmp_obj;
} else {
return;
}
}
Hash.prototype.calcHashCode = function(str) {
if (typeof str != 'string') {
return false;
}
let st = this.step;
let code = 0;
for (let i = 0; i < str.length; i++) {
code += str.charCodeAt(i) * st;
st = st * this.base;
}
return code % this.scope;
}
let hash = new Hash();
register(root, 'Hash', hash);
let find = function(origin) {
//当要增加方法时，注意this.result的push和pop的含义已经变化，分别为从result中原位存入和取出
//对于result的元素删除操作只能使用splice才能保证库正常运行
//notation: when you want to extends this library, please remember that this.result.pop or this.result.push has different function from prototype of array,and all the library
//depend on the share_data ,result,runStack.
let sql = function() {
this.runStack = [];
this.inxs = (function() {
if (origin.length == 0) {
return [];
} else {
return Object.keys(origin[0]);
}
})();
this.result = [];
let share_data = null;
let cur_data_wrapper = {
'data': null,
'pos': this.result.length - 1,
};
let hadRun = [];
let that = this;
let run = function() {
that.result.clear();
share_data = null;
for (let i = 0; i < origin.length; i++) {
share_data = origin[i];
for (let j = that.runStack.length - 1; j >= 0; j--) {
that.runStack[j]();
}
}
origin = JSON.parse(JSON.stringify(that.result));
};
Object.keys(sql.prototype).forEach(function(methodName) {
Object.defineProperty(that.result, methodName, {
'value': function(...argu) {
if (methodName != 'run') {
let hasSeq = typeof argu[0] == 'boolean' ? argu[0] : false;
let tmp_argu = JSON.parse(JSON.stringify(argu));
if (!hasSeq) {
hash.formatObj(tmp_argu);
}
tmp_argu = JSON.stringify(tmp_argu);
let ky = methodName + hash.calcHashCode(tmp_argu);
if (hadRun.indexOf(ky) < 0) {
that[methodName](...argu);
run();
hadRun.push(ky);
}
}
return that.result;
},
'configurable': false,
'enumerable': false,
'writable': false,
});
});
Object.defineProperty(that.result, 'push', {
'value': function(argv) {
if (share_data == null && cur_data_wrapper.pos >= 0) {
that.result.splice(cur_data_wrapper.pos, 0, argv);
} else {
Array.prototype.push.call(that.result, argv);
cur_data_wrapper.data = share_data;
cur_data_wrapper.pos = that.result.length - 1;
share_data = null;
}
},
'configurable': false,
'writable': false,
'enumerable': false,
});
Object.defineProperty(that.result, 'pop', {
'value': function() {
let tmp = null;
if (share_data != null) {
tmp = JSON.stringify(share_data);
share_data = null;
tmp = JSON.parse(tmp);
} else {
if (that.result.length > 0 && cur_data_wrapper.pos >= 0) {
tmp = that.result.splice(cur_data_wrapper.pos, 1)[0];
} else {
tmp = null;
}
}
cur_data_wrapper.data = tmp;
return tmp;
},
'configurable': false,
'writable': false,
'enumerable': false,
});
Object.defineProperty(that.result, 'splice', {
'value': function(start, delcount, ...addData) {
if (delcount == 0) {
cur_data_wrapper.pos = start;
} else {
cur_data_wrapper.pos = -1;
}
return Array.prototype.splice.call(that.result, start, delcount, ...addData);
},
'configurable': false,
'writable': false,
'enumerable': false,
});
this.result.clear = function() {
that.result.splice(0, that.result.length);
cur_data_wrapper.pos = that.result.length - 1;
cur_data_wrapper.data = null;
}
this.result.put = function(data) {
if (!Array.isArray(data)) {
Log.fire('sql.result.put', 'error', 'the argument of put must be array');
}
that.result.splice(that.result.length, 0, data);
}
};
sql.prototype = {
//每一个方法处理share_data，也只能处理share_data，整个运行就像一条流水线加工厂
'where': function(wh) {
if (typeof wh !== 'object') {
console.error('your where syntax was error');
Log.fire('find.sql.where', 'error', 'the where syntax was error');
}
let that = this;
this.runStack.unshift(function() {
let data = null;
data = that.result.pop();
if (typeof wh != 'object') {
//debug
Log.fire('find.sql.where.runStackFunction', 'error', 'the where syntax was error');
}
let match = true;
let k = Object.keys(wh);
for (let i = 0; i < k.length; i++) {
if (that.inxs.indexOf(k[i]) < 0) {
continue;
}
if (data[k[i]] && typeof data[k[i]] !== 'object') {
if (typeof data[k[i]] === null) {
continue;
}
if (typeof wh[k[i]] !== 'string' && Object.getPrototypeOf(wh[k[i]]) === RegExp.prototype) {
if (!wh[k[i]].test(data[k[i]])) {
match = false;
break;
}
} else if (typeof wh[k[i]] === 'string') {
if (!data[k[i]] || data[k[i]] != wh[k[i]]) {
match = false;
break;
}
} else if (Array.isArray(wh[k[i]])) {
if (wh[k[i]].length !== 2) {
Log.fire('find.sql.where.runStackFunction', 'error', 'the Arraywhere syntax was error. Want to Konw detail,please see the document');
}
let op = wh[k[i]][0];
let d = wh[k[i]][1];
if (typeof op != 'string' || (typeof d != 'string' && typeof d != 'number')) {
Log.fire('find.sql.where.runStackFunction', 'error', 'the Arraywhere syntax was error. Want to Konw detail,please see the document');
}
try {
if (typeof data[k[i]] == 'number') {
if ((d = parseFloat(d)) === NaN) {
d = parseInt(d);
}
}
if (!Compare.generalCompare(data[k[i]], op, d)) {
match = false;
}
} catch(e) {
throw e;
}
}
} else {
match = false;
break;
}
}
(match ? that.result.push(data) : '');
}
);
},
'orderBy': function(inx, direct) {
let dic = ['desc', 'asc'];
if (dic.indexOf(direct) < 0) {
Log.fire('find.sql.orderBy', 'error', 'the direct was error');
}
if (this.inxs.indexOf(inx) < 0) {
Log.fire('find.sql.orderBy', 'error', 'the inx not in the data');
}
let that = this;
this.runStack.unshift(function() {
let data = null;
data = that.result.pop();
if (data == [] || data == null) {
return;
}
let end = that.result.length ? that.result.length - 1 : 0;
let start = 0;
let inx_val = data[inx];
let mid = 0;
while (start <= end) {
let avg = Math.ceil((end - start + 1) / 2);
mid = start + avg;
if (mid >= that.result.length) {
break;
}
if (inx_val < that.result[mid][inx]) {
if (direct == 'desc') {
start += avg;
} else {
end -= avg;
}
} else if (inx_val == that.result[mid][inx]) {
that.result.splice(mid + 1, 0, data);
return;
} else if (inx_val > that.result[mid][inx]) {
if (direct == 'desc') {
end -= avg;
} else {
start += avg;
}
}
}
if (that.result.length > 0) {
if (data[inx] > that.result[start][inx]) {
if (direct == 'asc') {
start++;
}
} else {
if (direct == 'desc') {
start++;
}
}
}
that.result.splice(start, 0, data);
});
},
'filter': function(fields) {
if (!Array.isArray(fields)) {
return;
}
let that = this;
fields.forEach(function(field) {
if (that.inxs.indexOf(field) < 0) {
return;
}
});
this.runStack.unshift(function() {
let data = that.result.pop();
let tmp_data = {};
if (data == null) {
return;
}
fields.forEach(function(field) {
if (data[field] !== undefined) {
tmp_data[field] = data[field];
}
});
that.result.push(tmp_data);
});
},
'find': function() {
let that = this;
this.runStack.unshift(function() {
that.result.push(that.result.pop());
});
},
};
let sql_obj = new sql();
return sql_obj.result.find();
}
if (typeof window.module == undefined && module.exports) {
module.exports = find;
} else if (!root.findData) {
root.findData = find;
}
})(window);
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