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Cassandra support for Spring Data
/*
* Copyright 2016-2019 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 org.springframework.data.cassandra.core.cql.CqlIdentifier;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
import com.datastax.driver.core.Cluster;
import com.datastax.driver.core.KeyspaceMetadata;
import com.datastax.driver.core.UserType;
/**
* Default implementation of {@link UserTypeResolver} that resolves {@link UserType} by their name from
* {@link Cluster#getMetadata()}.
*
* @author Mark Paluch
* @since 1.5
*/
public class SimpleUserTypeResolver implements UserTypeResolver {
private final String keyspaceName;
private final Cluster cluster;
/**
* Create a new {@link SimpleUserTypeResolver}.
*
* @param cluster must not be {@literal null}.
* @param keyspaceName must not be empty or {@literal null}.
*/
public SimpleUserTypeResolver(Cluster cluster, String keyspaceName) {
Assert.notNull(cluster, "Cluster must not be null");
Assert.hasText(keyspaceName, "Keyspace must not be null or empty");
this.keyspaceName = keyspaceName;
this.cluster = cluster;
}
/* (non-Javadoc)
* @see org.springframework.data.cassandra.core.mapping.UserTypeResolver#resolveType(org.springframework.data.cassandra.core.cql.CqlIdentifier)
*/
@Nullable
@Override
public UserType resolveType(CqlIdentifier typeName) {
KeyspaceMetadata keyspace = cluster.getMetadata().getKeyspace(keyspaceName);
return keyspace.getUserType(typeName.toCql());
}
}