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Apache Geode provides a database-like consistency model, reliable transaction processing and a shared-nothing architecture to maintain very low latency performance with high concurrency processing
/*
* 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.geode.cache.query.internal.cq;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.geode.cache.CacheEvent;
import org.apache.geode.cache.client.Pool;
import org.apache.geode.cache.client.internal.InternalPool;
import org.apache.geode.cache.client.internal.QueueManager;
import org.apache.geode.cache.client.internal.UserAttributes;
import org.apache.geode.cache.query.CqAttributes;
import org.apache.geode.cache.query.CqClosedException;
import org.apache.geode.cache.query.CqException;
import org.apache.geode.cache.query.CqExistsException;
import org.apache.geode.cache.query.CqQuery;
import org.apache.geode.cache.query.CqServiceStatistics;
import org.apache.geode.cache.query.QueryInvalidException;
import org.apache.geode.cache.query.RegionNotFoundException;
import org.apache.geode.distributed.internal.DistributionAdvisor.Profile;
import org.apache.geode.internal.cache.EventID;
import org.apache.geode.internal.cache.FilterRoutingInfo;
import org.apache.geode.internal.cache.tier.sockets.CacheClientNotifier;
import org.apache.geode.internal.cache.tier.sockets.ClientProxyMembershipID;
public interface CqService {
/**
* Constructs a new named continuous query, represented by an instance of CqQuery. The CqQuery is
* not executed, however, until the execute method is invoked on the CqQuery. The name of the
* query will be used to identify this query in statistics archival.
*
* @param cqName the String name for this query
* @param queryString the OQL query
* @param cqAttributes the CqAttributes
* @param isDurable true if the CQ is durable
* @return the newly created CqQuery object
* @throws CqExistsException if a CQ by this name already exists on this client
* @throws IllegalArgumentException if queryString or cqAttr is null
* @throws IllegalStateException if this method is called from a cache server
* @throws QueryInvalidException if there is a syntax error in the query
* @throws CqException if failed to create cq, failure during creating managing cq metadata info.
* E.g.: Query string should refer only one region, join not supported. The query must be
* a SELECT statement. DISTINCT queries are not supported. Projections are not supported.
* Only one iterator in the FROM clause is supported, and it must be a region path. Bind
* parameters in the query are not supported for the initial release.
*
*/
public abstract ClientCQ newCq(String cqName, String queryString, CqAttributes cqAttributes,
InternalPool pool, boolean isDurable)
throws QueryInvalidException, CqExistsException, CqException;
/**
* Retrieve a cq by client cq name from server
*
* @return the CqQuery or null if not found
*/
public abstract CqQuery getClientCqFromServer(ClientProxyMembershipID clientProxyId,
String clientCqName);
/**
* Retrieve a CqQuery by name.
*
* @return the CqQuery or null if not found
*/
public abstract InternalCqQuery getCq(String cqName);
/**
* Retrieve all registered CQs
*/
public abstract Collection getAllCqs();
/**
* Retruns all the cqs on a given region.
*
*/
public abstract Collection getAllCqs(String regionName)
throws CqException;
/**
* Executes all the cqs on this client.
*/
public abstract void executeAllClientCqs() throws CqException;
/**
* Executes all the cqs on a given region.
*/
public abstract void executeAllRegionCqs(String regionName) throws CqException;
/**
* Executes all the given cqs.
*/
public abstract void executeCqs(Collection cqs) throws CqException;
/**
* Stops all the cqs on a given region.
*/
public abstract void stopAllClientCqs() throws CqException;
/**
* Stops all the cqs on a given region.
*/
public abstract void stopAllRegionCqs(String regionName) throws CqException;
/**
* Stops all the specified cqs.
*/
public abstract void stopCqs(Collection cqs) throws CqException;
/**
* Closes all the cqs on a given region.
*/
public abstract void closeCqs(String regionName) throws CqException;
/**
* Called directly on server side.
*
* @param cqName
* @param clientProxyId
* @throws CqException
*/
public abstract void closeCq(String cqName, ClientProxyMembershipID clientProxyId)
throws CqException;
public abstract void closeAllCqs(boolean clientInitiated);
public abstract void closeAllCqs(boolean clientInitiated,
Collection cqs, boolean keepAlive);
/**
* Get statistics information for all CQs
*
* @return the CqServiceStatistics
*/
public abstract CqServiceStatistics getCqStatistics();
/**
* Server side method.
*
* @param clientProxyId
* @throws CqException
*/
public abstract void closeClientCqs(ClientProxyMembershipID clientProxyId) throws CqException;
/**
* Returns all the CQs registered by the client.
*
* @param clientProxyId
* @return CQs registered by the client.
*/
public abstract List getAllClientCqs(ClientProxyMembershipID clientProxyId);
/**
* Returns all the durable client CQs registered by the client.
*
* @param clientProxyId
* @return CQs registered by the client.
*/
public abstract List getAllDurableClientCqs(ClientProxyMembershipID clientProxyId)
throws CqException;
/**
* Invokes the CqListeners for the given CQs.
*
* @param cqs list of cqs with the cq operation from the Server.
* @param messageType base operation
* @param key
* @param value
*/
public abstract void dispatchCqListeners(HashMap cqs, int messageType,
Object key, Object value, byte[] delta, QueueManager qManager, EventID eventId);
public abstract void processEvents(CacheEvent event, Profile localProfile, Profile[] profiles,
FilterRoutingInfo frInfo) throws CqException;
public UserAttributes getUserAttributes(String cqName);
/**
* Closes the CqService.
*/
public void close();
/**
* Returns true if the CQ service has not been closed yet.
*/
public boolean isRunning();
public void start();
/**
* @return Returns the serverCqName.
*/
public String constructServerCqName(String cqName, ClientProxyMembershipID clientProxyId);
/**
* Called directly on server side.
*
* @param cqName
* @param clientId
* @throws CqException
*/
public void stopCq(String cqName, ClientProxyMembershipID clientId) throws CqException;
/**
* Called directly on the server side.
*
* @param cqState new state
* @param cQuery
*/
public void resumeCQ(int cqState, ServerCQ cQuery);
public void cqsDisconnected(Pool pool);
public void cqsConnected(Pool pool);
/**
* Executes the given CqQuery, if the CqQuery for that name is not there it registers the one and
* executes. This is called on the Server.
*
* @param cqName
* @param queryString
* @param cqState
* @param clientProxyId
* @param ccn
* @param manageEmptyRegions whether to update the 6.1 emptyRegions map held in the CCN
* @param regionDataPolicy the data policy of the region associated with the query. This is only
* needed if manageEmptyRegions is true.
* @param emptyRegionsMap map of empty regions.
* @throws IllegalStateException if this is called at client side.
* @throws CqException
*/
public ServerCQ executeCq(String cqName, String queryString, int cqState,
ClientProxyMembershipID clientProxyId, CacheClientNotifier ccn, boolean isDurable,
boolean manageEmptyRegions, int regionDataPolicy, Map emptyRegionsMap)
throws CqException, RegionNotFoundException, CqClosedException;
/**
* Server side method. Closes non-durable CQs for the given client proxy id.
*
* @param clientProxyId
* @throws CqException
*/
public void closeNonDurableClientCqs(ClientProxyMembershipID clientProxyId) throws CqException;
public abstract List getAllDurableCqsFromServer(InternalPool pool);
}