org.trustedanalytics.h2oscoringengine.publisher.restapi.validation.FormDataValidator.java Source code

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Here is the source code for org.trustedanalytics.h2oscoringengine.publisher.restapi.validation.FormDataValidator.java

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/**
 * Copyright (c) 2015 Intel Corporation
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */
package org.trustedanalytics.h2oscoringengine.publisher.restapi.validation;

import org.springframework.util.MultiValueMap;

import com.google.common.base.Preconditions;

class FormDataValidator {

    public FormDataValidator() {
    }

    public void validateField(MultiValueMap<String, String> formData, String fieldKey) {
        Preconditions.checkArgument(formData.containsKey(fieldKey), "There's no '%s' key in form data.", fieldKey);
        Preconditions.checkArgument(1 == formData.get(fieldKey).size(),
                "There's %s '%s' keys in form data. There should be exactly 1.", formData.get(fieldKey).size(),
                fieldKey);
        Preconditions.checkArgument(!formData.get(fieldKey).get(0).isEmpty(), "'%s' key in form data is empty.",
                fieldKey);
    }
}