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A driver for Apache Cassandra 1.2+ that works exclusively with the Cassandra Query Language version 3
(CQL3) and Cassandra's binary protocol.
/*
* Copyright (C) 2012-2017 DataStax Inc.
*
* 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.
*/
package com.datastax.driver.core;
/**
* A listing of features that may or not apply to a given {@link ProtocolVersion}.
*/
enum ProtocolFeature {
/**
* The capability of updating a prepared statement if the result's metadata changes at runtime (for example, if the
* query is a {@code SELECT *} and the table is altered).
*/
PREPARED_METADATA_CHANGES,
//
;
/**
* Determines whether or not the input version supports ths feature.
*
* @param version the version to test against.
* @return true if supported, false otherwise.
*/
boolean isSupportedBy(ProtocolVersion version) {
switch (this) {
case PREPARED_METADATA_CHANGES:
return version == ProtocolVersion.V5;
default:
return false;
}
}
}