package org.apache.solr.update;
/*
* 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.
*/
import java.io.IOException;
import org.apache.lucene.index.IndexWriter;
import org.apache.solr.core.CoreContainer;
import org.apache.solr.core.DirectoryFactory;
import org.apache.solr.core.SolrCore;
import org.apache.solr.util.RefCounted;
/**
* The state in this class can be easily shared between SolrCores across
* SolrCore reloads.
*
*/
public abstract class SolrCoreState {
private final Object deleteLock = new Object();
public Object getUpdateLock() {
return deleteLock;
}
/**
* Force the creation of a new IndexWriter using the settings from the given
* SolrCore.
*
* @param rollback close IndexWriter if false, else rollback
* @throws IOException If there is a low-level I/O error.
*/
public abstract void newIndexWriter(SolrCore core, boolean rollback) throws IOException;
/**
* Get the current IndexWriter. If a new IndexWriter must be created, use the
* settings from the given {@link SolrCore}.
*
* @throws IOException If there is a low-level I/O error.
*/
public abstract RefCounted<IndexWriter> getIndexWriter(SolrCore core) throws IOException;
/**
* Decrement the number of references to this state. When then number of
* references hits 0, the state will close. If an optional closer is
* passed, that will be used to close the writer.
*
* @throws IOException If there is a low-level I/O error.
*/
public abstract void decref(IndexWriterCloser closer) throws IOException;
/**
* Increment the number of references to this state.
*/
public abstract void incref();
/**
* Rollback the current IndexWriter. When creating the new IndexWriter use the
* settings from the given {@link SolrCore}.
*
* @throws IOException If there is a low-level I/O error.
*/
public abstract void rollbackIndexWriter(SolrCore core) throws IOException;
/**
* @return the {@link DirectoryFactory} that should be used.
*/
public abstract DirectoryFactory getDirectoryFactory();
public interface IndexWriterCloser {
public void closeWriter(IndexWriter writer) throws IOException;
}
public abstract void doRecovery(CoreContainer cc, String name);
public abstract void cancelRecovery();
}