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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.phoenix.cache;
import java.io.Closeable;
import java.io.IOException;
import java.util.Collections;
import java.util.List;
import org.apache.phoenix.index.IndexMaintainer;
import org.apache.phoenix.transaction.PhoenixTransactionContext;
import org.apache.phoenix.util.ScanUtil;
public interface IndexMetaDataCache extends Closeable {
public static final IndexMetaDataCache EMPTY_INDEX_META_DATA_CACHE = new IndexMetaDataCache() {
@Override
public void close() throws IOException {
}
@Override
public List getIndexMaintainers() {
return Collections.emptyList();
}
@Override
public PhoenixTransactionContext getTransactionContext() {
return null;
}
@Override
public int getClientVersion() {
return ScanUtil.UNKNOWN_CLIENT_VERSION;
}
};
public List getIndexMaintainers();
public PhoenixTransactionContext getTransactionContext();
public int getClientVersion();
}
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