elisa-mysql/lib/where.js

MySQL/MariaDB Elisa driver.

"use strict";Object.defineProperty(exports, "__esModule", { value: true });var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) {return typeof obj;} : function (obj) {return obj && typeof Symbol === "function" && obj.constructor === Symbol ? "symbol" : typeof obj;};exports.default = 


where;function where(query, params) {
  var clause = "";


  for (var field in query) {
    var predicate = "", value = query[field];

    if (["string", "boolean", "number"].indexOf(typeof value === "undefined" ? "undefined" : _typeof(value)) >= 0 || value instanceof Array) {
      predicate = eq(field, "=", value);
    } else {
      var ops = Object.keys(value), filter = true;var _iteratorNormalCompletion = true;var _didIteratorError = false;var _iteratorError = undefined;try {

        for (var _iterator = ops[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {var _op = _step.value;
          if (!_op.startsWith("$")) {
            filter = false;
            break;
          }
        }} catch (err) {_didIteratorError = true;_iteratorError = err;} finally {try {if (!_iteratorNormalCompletion && _iterator.return) {_iterator.return();}} finally {if (_didIteratorError) {throw _iteratorError;}}}

      if (!filter) {
        predicate = eq(field, value);
      } else {var _iteratorNormalCompletion2 = true;var _didIteratorError2 = false;var _iteratorError2 = undefined;try {
          for (var _iterator2 = ops[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {var op = _step2.value;
            var expr = "";

            switch (op) {
              case "$eq":expr = eq(field, "=", value[op]);break;
              case "$ne":case "$neq":expr = eq(field, "<>", value[op]);break;
              case "$lt":expr = cmp(field, "<", value[op]);break;
              case "$le":case "$lte":expr = cmp(field, "<=", value[op]);break;
              case "$gt":expr = cmp(field, ">", value[op]);break;
              case "$ge":case "$gte":expr = cmp(field, ">=", value[op]);break;
              case "$between":expr = between(field, "BETWEEN", value[op]);break;
              case "$nbetween":case "$notBetween":expr = between(field, "NOT BETWEEN", value[op]);break;
              case "$like":expr = like(field, "LIKE", value[op]);break;
              case "$nlike":case "$notLike":expr = like(field, "NOT LIKE", value[op]);break;
              case "$contain":case "$contains":expr = contain(field, value[op]);break;
              case "$ncontain":case "$ncontains":case "$notContain":case "$notContains":expr = ncontain(field, value[op]);break;
              case "$in":expr = inn(field, "IN", value[op]);break;
              case "$nin":case "$notIn":expr = inn(field, "NOT IN", value[op]);break;
              default:throw new Error("Invalid filter operator: " + op + ".");}


            predicate = expr;
          }} catch (err) {_didIteratorError2 = true;_iteratorError2 = err;} finally {try {if (!_iteratorNormalCompletion2 && _iterator2.return) {_iterator2.return();}} finally {if (_didIteratorError2) {throw _iteratorError2;}}}
      }
    }

    if (clause === "") clause = predicate;else 
    clause += " AND " + predicate;
  }


  return clause ? "WHERE " + clause : "";


  function eq(field, op, value) {
    var predicate;

    if (typeof value == "string") {
      if (field == "id") {
        predicate = "id " + op + " ?";
        params.push(value);
      } else {
        predicate = "column_get(doc, ? as char) " + op + " ?";
        params.push(field);
        params.push(value);
      }
    } else if (typeof value == "number") {
      if (field == "id") {
        predicate = "id " + op + " ?";
        params.push(value);
      } else {
        predicate = "column_get(doc, ? as decimal) " + op + " ?";
        params.push(field);
        params.push(value);
      }
    } else {
      if (field == "id") {
        predicate = "id " + op + " ?";
        params.push(value);
      } else {
        predicate = "column_get(doc, ? as char) " + op + " ?";
        params.push(field);
        params.push("$" + JSON.stringify(value));
      }
    }

    return predicate;
  }

  function cmp(field, op, value) {
    var predicate;

    if (field == "id") {
      predicate = "id " + op + " ?";
      params.push(value);
    } else {
      if (typeof value == "string") predicate = "column_get(doc, ? as char) " + op + " ?";else 
      predicate = "column_get(doc, ? as decimal) " + op + " ?";
      params.push(field);
      params.push(value);
    }

    return predicate;
  }

  function between(field, op, value) {
    var predicate;

    if (field == "id") {
      predicate = "id " + op + " ? AND ?";
      params.push(value[0]);
      params.push(value[1]);
    } else {
      if (typeof value == "string") predicate = "column_get(doc, ? as char) " + op + " ? AND ?";else 
      predicate = "column_get(doc, ? as char) " + op + " ? AND ?";
      params.push(field);
      params.push(value[0]);
      params.push(value[1]);
    }

    return predicate;
  }

  function like(field, op, value) {
    var predicate;

    if (field == "id") {
      predicate = "id " + op + " ?";
      params.push(value);
    } else {
      if (typeof value == "string") predicate = "column_get(doc, ? as char) " + op + " ?";else 
      predicate = "column_get(doc, ? as char) " + op + " ?";

      params.push(field);
      params.push(value);
    }

    return predicate;
  }

  function inn(field, op, value) {
    var predicate;

    if (field == "id") {
      if (value.length === 0) {
        predicate = op == "IN" ? "false" : "true";
      } else {
        predicate = "id " + op + " (?)";
        params.push(value);
      }
    } else {
      if (value.length === 0) {
        predicate = op == "IN" ? "false" : "true";
      } else {
        predicate = "column_get(doc, ? as char) " + op + " (?)";
        params.push(field);
        params.push(value);
      }
    }

    return predicate;
  }

  function contain(field, value) {
    var predicate;

    if (field == "id") {
      predicate = "instr(id, ?)";
      params.push(value);
    } else {
      predicate = "if(left(@cv:=column_get(doc, ? as char), 1) <> '$', instr(@cv, ?), instr(@cv, ?))";
      params.push(field);
      params.push(value);
      params.push(JSON.stringify(value));
    }

    return predicate;
  }

  function ncontain(field, value) {
    var predicate;

    if (field == "id") {
      predicate = "(not instr(id, ?))";
      params.push(value);
    } else {
      predicate = "if(left(@cv:=column_get(doc, ? as char), 1) <> '$', not instr(@cv, ?), not instr(@cv, ?))";
      params.push(field);
      params.push(value);
      params.push(JSON.stringify(value));
    }

    return predicate;
  }
}




function set(update, params) {
  var clause = "";


  for (var field in update) {
    var predicate = "", value = update[field];

    if (["string", "boolean", "number"].indexOf(typeof value === "undefined" ? "undefined" : _typeof(value)) >= 0) {
      predicate = assign(field, value);
    } else {
      var keys = Object.keys(value);

      if (keys.length == 1) {
        var op = keys[0];

        if (op == "$set") predicate = assign(field, value.$set);else 
        if (op == "$inc") predicate = math("+", field, value.$inc);else 
        if (op == "$dec") predicate = math("-", field, value.$dec);else 
        if (op == "$mul") predicate = math("*", field, value.$mul);else 
        if (op == "$div") predicate = math("/", field, value.$div);else 
        if (op == "$add") predicate = add(field, value.$add);else 
        if (op == "$remove") predicate = remove(field, value.$remove);else 
        if (op == "$push") predicate = push(field, value.$push);else 
        if (op == "$concat") predicate = concat(field, value.$concat);else 
        if (op == "$pop") predicate = pop(field, value.$pop);else 
        predicate = assign(field, value);
      } else {
        predicate = assign(field, value);
      }
    }

    if (clause === "") clause = predicate;else 
    clause += ", " + predicate;
  }


  return "SET " + clause;


  function assign(field, value) {
    var predicate;

    if (typeof value == "string") {
      predicate = "doc = column_add(doc, ?, ?)";
      params.push(field);
      params.push(value);
    } else if (typeof value == "boolean") {
      predicate = "doc = column_add(doc, ?, ?)";
      params.push(field);
      params.push("$" + value);
    } else if (typeof value == "number") {
      predicate = "doc = column_add(doc, ?, ?)";
      params.push(field);
      params.push(value);
    } else if ((typeof value === "undefined" ? "undefined" : _typeof(value)) == "object") {
      predicate = "doc = column_add(doc, ?, ?)";
      params.push(field);
      params.push("$" + JSON.stringify(value));
    }

    return predicate;
  }

  function math(op, field, value) {
    params.push(field);
    params.push(value);

    return "doc = column_add(doc, @fld:=?, column_get(doc, @fld as decimal) " + op + " ?)";
  }

  function concat(field, value) {
    params.push(field);
    params.push(value);
    params.push(value);
    params.push(value);

    return "doc = column_add(doc, @fld:=?, if(not column_exists(doc, @fld), ?, if((@cv:=column_get(doc, @fld as char)) in ('', '$null'), ?, concat(@cv, ?))))";
  }

  function push(field, value) {
    var item = JSON.stringify(value);

    params.push(field);
    params.push(item);
    params.push(item);
    params.push(item);

    return "doc = column_add(doc, @fld:=?, if(not column_exists(doc, @fld), concat('$[', ?, ']'), if((@cv:=column_get(doc, @fld as char)) in ('$[]', '$null'), concat('$[', ?, ']'), concat(left(@cv, length(@cv) - 1), ',', ?, ']'))))";
  }

  function pop(field, value) {
    params.push(field);

    return "doc = if(not column_exists(doc, @fld:=?), doc, column_add(doc, @fld, if((@cv:=column_get(doc, @fld as char)) in ('$[]', '$null'), @cv, if(not instr(@cv, ','), '$[]', concat(substr(@cv, 1, length(@cv) - length(substring_index(@cv, \",\", -1)) - 1), \"]\")))))";
  }

  function add(field, value) {
    var item = JSON.stringify(value);

    params.push(field);
    params.push(item);
    params.push(item);
    params.push(item);

    return "doc = column_add(doc, @fld:=?, if(not column_exists(doc, @fld), concat('$[', ?, ']'), if((@cv:=column_get(doc, @fld as char)) in ('$[]', '$null'), concat('$[', ?, ']'), if(instr(@cv, @val:=?), @cv, concat(left(@cv, length(@cv)- 1), ',', @val, ']')))))";
  }

  function remove(field, value) {
    var predicate = "doc = if(not column_exists(doc, (@fld:=?)), doc, if((@cv := column_get(doc, @fld as char)) in ('$null', '$[]'), doc, column_add(doc, @fld, replace(replace(regexp_replace(replace(@cv, ?, ''), ',+', ','), '$[,', '$['), ',]', ']'))))";
    var item = JSON.stringify(value);

    params.push(field);
    params.push(item);

    return predicate;
  }
}