@thinql/to-knex/dist/esm/Builder.js

Build SQL queries from ThinQL ASTs with Knex.js

const prepareKnexBuilder = (builder, negate = false) => {
  const {
    logicalOperator
  } = builder;
  let {
    knexBuilder
  } = builder;

  if (negate) {
    knexBuilder = knexBuilder._not(true);
  }

  if (logicalOperator) {
    knexBuilder = knexBuilder._bool(logicalOperator === Builder.AND ? 'and' : 'or');
  }

  return knexBuilder;
};

export default class Builder {
  static get AND() {
    return 'LogicalAndExpression';
  }

  static get OR() {
    return 'LogicalOrExpression';
  }

  constructor(knexBuilder, logicalOperator = null) {
    this.initial = true;
    this.knexBuilder = knexBuilder;
    this.logicalOperator = logicalOperator;
  }

  addClause(...args) {
    this.knexBuilder = prepareKnexBuilder(this).where(...args);
  }

  addGroup(fn, negate = false, logicalOperator = null) {
    this.knexBuilder = prepareKnexBuilder(this, negate).where(function () {
      const knexBuilder = this;
      const builder = new Builder(knexBuilder, logicalOperator);
      fn(builder);
      return knexBuilder;
    });
  }

}
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