/*
* ModeShape (http://www.modeshape.org)
*
* 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 org.modeshape.jcr.spi.index.provider;
import org.modeshape.jcr.api.index.IndexManager;
import org.modeshape.jcr.cache.change.ChangeSetListener;
/**
* The top-level interface for an index owned by a provider, with common methods needed by indexes regardless of number of
* columns.
* <p>
* Index providers may choose to implement this from scratch and return it to the repository, or they may choose to implement a
* {@link ManagedIndexBuilder} instance and use an {@link DefaultManagedIndex} instance to wrap their {@link ProvidedIndex} instances.
* </p>
*
* @author Randall Hauch (rhauch@redhat.com)
* @author Horia Chiorean (hchiorea@redhat.com)
*
* @see ManagedIndexBuilder
* @see ProvidedIndex
*/
public interface ManagedIndex extends Filter, Costable, Lifecycle, Reindexable {
/**
* Get the ChangeSetAdapter implementation through which changes to content are sent to the index. Each local index has an
* {@link ChangeSetListener} that is registered on the event bus and kept throughout the lifetime of the index (even if there
* are changes), and that listener delegates to this adapter.
*
* @return the adapter; never null
*/
IndexChangeAdapter getIndexChangeAdapter();
/**
* Mark whether this index is enabled for use, or not enabled meaning it should not be used.
*
* @param enable true if the index is to be enabled, or false otherwise
*/
void enable( boolean enable );
/**
* Determine if this index is enabled for use.
*
* @return true if enabled, or false otherwise
*/
boolean isEnabled();
/**
* Return the current status of the managed index
*
* @return a {@link org.modeshape.jcr.api.index.IndexManager.IndexStatus} instance, never null
*/
IndexManager.IndexStatus getStatus();
/**
* Update the status of this index to a new value if the current status is {@code currentStatus}
*
* @param currentStatus a {@link org.modeshape.jcr.api.index.IndexManager.IndexStatus} instance, may not be null
* @param newStatus a {@link org.modeshape.jcr.api.index.IndexManager.IndexStatus} instance, may not be null
*/
void updateStatus(IndexManager.IndexStatus currentStatus, IndexManager.IndexStatus newStatus);
}