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package com.mongodb.internal.validator;
//copy from https://github.com/mongodb/mongo-java-driver/blob/master/driver-core/src/main/com/mongodb/internal/validator/CollectibleDocumentFieldNameValidator.java
//allow inserting name with dot
/*
* ============LICENSE_START=======================================================
* ONAP : DataLake
* ================================================================================
* Copyright 2018 China Mobile
*=================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
import org.bson.FieldNameValidator;
import java.util.Arrays;
import java.util.List;
/**
* A field name validator for document that are meant for storage in MongoDB collections. It ensures that no fields contain a '.',
* or start with '$' (with the exception of "$db", "$ref", and "$id", so that DBRefs are not rejected).
*
* <p>This class should not be considered a part of the public API.</p>
*/
public class CollectibleDocumentFieldNameValidator implements FieldNameValidator {
// Have to support DBRef fields
private static final List<String> EXCEPTIONS = Arrays.asList("$db", "$ref", "$id");
@Override
public boolean validate(final String fieldName) {
if (fieldName == null) {
throw new IllegalArgumentException("Field name can not be null");
}
return !fieldName.startsWith("$") || EXCEPTIONS.contains(fieldName);
}
@Override
public FieldNameValidator getValidatorForField(final String fieldName) {
return this;
}
}
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