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Cassandra support for Spring Data
/*
* Copyright 2017-2021 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.cql;
import java.util.HashSet;
import java.util.Set;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;
/**
* CQL keywords.
*
* @see https://cassandra.apache.org/doc/cql3/CQL.html#appendixA
* @author Matthew T. Adams
* @author Mark Paluch
* @deprecated since 3.0 without replacement.
*/
@Deprecated
public enum ReservedKeyword {
ADD, ALTER, AND, ANY, APPLY, ASC, AUTHORIZE, //
BATCH, BEGIN, BY, COLUMNFAMILY, CREATE, DELETE, DESC, DROP, EACH_QUORUM, //
FROM, GRANT, IN, INDEX, INSERT, INTO, KEYSPACE, //
LIMIT, LOCAL_ONE, LOCAL_QUORUM, MODIFY, NORECURSIVE, //
OF, ON, ONE, ORDER, PRIMARY, QUORUM, REVOKE, SCHEMA, SELECT, SET, //
TABLE, THREE, TOKEN, TRUNCATE, TWO, UPDATE, USE, USING, WHERE, WITH;
private static final Set RESERVED;
static {
RESERVED = new HashSet<>();
for (ReservedKeyword keyword : ReservedKeyword.values()) {
RESERVED.add(keyword.name());
}
}
/**
* @see ReservedKeyword#isReserved(String)
*/
public static boolean isReserved(CharSequence candidate) {
Assert.notNull(candidate, "CharSequence must not be null");
return isReserved(candidate.toString());
}
/**
* Returns whether the given string is a CQL reserved keyword. This comparison is done regardless of case.
*
* @param candidate candidate keyword.
*/
public static boolean isReserved(String candidate) {
if (!StringUtils.hasText(candidate)) {
return false;
}
return RESERVED.contains(candidate.toUpperCase());
}
}