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Cassandra support for Spring Data
/*
* Copyright 2018-2020 the original author or authors.
*
* 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
*
* https://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.springframework.data.cassandra.core.mapping;
import java.util.List;
import java.util.Set;
import java.util.TreeSet;
import java.util.stream.Collectors;
import java.util.stream.IntStream;
import org.springframework.data.mapping.MappingException;
import org.springframework.util.StringUtils;
/**
* Verifier for {@link CassandraPersistentEntity tuple entities}. Validates for a proper annotated domain classes to
* ensure the meta-model is suitable for {@link com.datastax.driver.core.TupleValue} mapping.
*
* @author Mark Paluch
* @since 2.1
*/
enum CassandraPersistentTupleMetadataVerifier implements CassandraPersistentEntityMetadataVerifier {
INSTANCE;
/* (non-Javadoc)
* @see org.springframework.data.cassandra.core.mapping.CassandraPersistentEntityMetadataVerifier#verify(org.springframework.data.cassandra.core.mapping.CassandraPersistentEntity)
*/
public void verify(CassandraPersistentEntity entity) throws MappingException {
if (entity.getType().isInterface() || !entity.isAnnotationPresent(Tuple.class)) {
return;
}
Set ordinals = new TreeSet<>();
for (CassandraPersistentProperty tupleProperty : entity) {
if (tupleProperty.isTransient()) {
continue;
}
if (!ordinals.add(tupleProperty.getOrdinal())) {
throw new MappingException(
String.format("Duplicate ordinal [%d] in entity [%s]", tupleProperty.getOrdinal(), entity.getName()));
}
}
if (ordinals.isEmpty()) {
throw new MappingException(String.format(
"Mapped tuple contains no persistent elements annotated with @Element in entity [%s]", entity.getName()));
}
List missingMappings = IntStream.range(0, ordinals.size()).boxed().collect(Collectors.toList());
missingMappings.removeAll(ordinals);
if (!missingMappings.isEmpty()) {
throw new MappingException(String.format("Mapped tuple has no ordinal mapping in entity [%s] for ordinal(s): %s",
entity.getName(), StringUtils.collectionToDelimitedString(missingMappings, ", ")));
}
}
}