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There is a newer version: 6.0.1

/*
 * Copyright (C) 2020 Graylog, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the Server Side Public License, version 1,
 * as published by MongoDB, Inc.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * Server Side Public License for more details.
 *
 * You should have received a copy of the Server Side Public License
 * along with this program. If not, see
 * .
 */
package org.graylog2.plugin.rest;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.google.common.collect.ArrayListMultimap;
import com.google.common.collect.Multimap;

import java.util.Collection;
import java.util.Map;

@JsonAutoDetect
public class ValidationResult {

    private final Multimap errors = ArrayListMultimap.create();
    private final Multimap context = ArrayListMultimap.create();


    public ValidationResult addError(String fieldName, String error) {
        errors.put(fieldName, error);
        return this;
    }
    public ValidationResult addContext(String fieldName, Iterable values) {
        context.putAll(fieldName, values);
        return this;
    }

    public ValidationResult addAll(Multimap extraErrors) {
        errors.putAll(extraErrors);
        return this;
    }

    public ValidationResult addAll(ValidationResult validationResult) {
        errors.putAll(validationResult.errors);
        context.putAll(validationResult.context);
        return this;
    }

    @JsonProperty("failed")
    public boolean failed() {
        return !errors.isEmpty();
    }

    @JsonProperty("errors")
    public Map> getErrors() {
        return errors.asMap();
    }

    @JsonProperty("error_context")
    public Map> getContext() {
        return context.asMap();
    }
}