ts-flex-query/expressions/filter.js

Flexible and type-safe data queries

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.FilterExpression = void 0;
const evaluate_expression_1 = require("../helpers/evaluate-expression");
const evaluation_context_utils_1 = require("../helpers/evaluation-context-utils");
class FilterExpression {
    get dataType() {
        return this.input.dataType;
    }
    constructor(input, variableSymbol, body) {
        this.input = input;
        this.variableSymbol = variableSymbol;
        this.body = body;
    }
    evaluate(context) {
        const inputResult = (0, evaluate_expression_1.evaluateExpression)(this.input, context);
        if (!Array.isArray(inputResult)) {
            return [];
        }
        return inputResult.filter((element) => {
            const innerContext = (0, evaluation_context_utils_1.addVariable)(context, this.variableSymbol, element);
            return (0, evaluate_expression_1.evaluateExpression)(this.body, innerContext);
        });
    }
}
exports.FilterExpression = FilterExpression;
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