1 package com.mongodb.internal.validator;
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3 //copy from https://github.com/mongodb/mongo-java-driver/blob/master/driver-core/src/main/com/mongodb/internal/validator/CollectibleDocumentFieldNameValidator.java
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4 //allow inserting name with dot
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6 * ============LICENSE_START=======================================================
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8 * ================================================================================
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9 * Copyright 2018 China Mobile
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10 *=================================================================================
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11 * Licensed under the Apache License, Version 2.0 (the "License");
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12 * you may not use this file except in compliance with the License.
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13 * You may obtain a copy of the License at
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15 * http://www.apache.org/licenses/LICENSE-2.0
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17 * Unless required by applicable law or agreed to in writing, software
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18 * distributed under the License is distributed on an "AS IS" BASIS,
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19 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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20 * See the License for the specific language governing permissions and
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21 * limitations under the License.
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22 * ============LICENSE_END=========================================================
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24 import org.bson.FieldNameValidator;
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26 import java.util.Arrays;
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27 import java.util.List;
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30 * A field name validator for document that are meant for storage in MongoDB collections. It ensures that no fields contain a '.',
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31 * or start with '$' (with the exception of "$db", "$ref", and "$id", so that DBRefs are not rejected).
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33 * <p>This class should not be considered a part of the public API.</p>
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35 public class CollectibleDocumentFieldNameValidator implements FieldNameValidator {
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36 // Have to support DBRef fields
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37 private static final List<String> EXCEPTIONS = Arrays.asList("$db", "$ref", "$id");
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40 public boolean validate(final String fieldName) {
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41 if (fieldName == null) {
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42 throw new IllegalArgumentException("Field name can not be null");
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46 if (fieldName.contains(".")) {
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50 if (fieldName.startsWith("$") && !EXCEPTIONS.contains(fieldName)) {
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57 public FieldNameValidator getValidatorForField(final String fieldName) {
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