/*
* JBoss, Home of Professional Open Source.
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership. Some portions may be licensed
* to Red Hat, Inc. under one or more contributor license agreements.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA.
*/
package org.teiid.translator.infinispan.hotrod;
import java.util.List;
import org.infinispan.client.hotrod.RemoteCache;
import org.infinispan.client.hotrod.RemoteCacheManager;
import org.teiid.infinispan.api.InfinispanConnection;
import org.teiid.language.QueryExpression;
import org.teiid.language.Select;
import org.teiid.language.visitor.SQLStringVisitor;
import org.teiid.logging.LogConstants;
import org.teiid.logging.LogManager;
import org.teiid.metadata.AbstractMetadataRecord;
import org.teiid.metadata.RuntimeMetadata;
import org.teiid.metadata.Table;
import org.teiid.translator.DataNotAvailableException;
import org.teiid.translator.ExecutionContext;
import org.teiid.translator.ResultSetExecution;
import org.teiid.translator.TranslatorException;
import org.teiid.translator.infinispan.hotrod.DocumentFilter.Action;
public class InfinispanQueryExecution implements ResultSetExecution {
private QueryExpression command;
private InfinispanConnection connection;
private RuntimeMetadata metadata;
private ExecutionContext executionContext;
private InfinispanResponse results;
private TeiidTableMarsheller marshaller;
public InfinispanQueryExecution(InfinispanExecutionFactory translator,
QueryExpression command, ExecutionContext executionContext,
RuntimeMetadata metadata, InfinispanConnection connection) throws TranslatorException {
this.command = command;
this.connection = connection;
this.metadata = metadata;
this.executionContext = executionContext;
}
@Override
public void execute() throws TranslatorException {
try {
final IckleConversionVisitor visitor = new IckleConversionVisitor(metadata, false);
visitor.append(this.command);
Table table = visitor.getParentTable();
String queryStr = visitor.getQuery();
LogManager.logDetail(LogConstants.CTX_CONNECTOR, "SourceQuery:", queryStr);
DocumentFilter docFilter = null;
if (queryStr.startsWith("FROM ") && ((Select)command).getWhere() != null) {
SQLStringVisitor ssv = new SQLStringVisitor() {
@Override
public String getName(AbstractMetadataRecord object) {
return object.getName();
}
};
ssv.append(((Select)command).getWhere());
docFilter = new ComplexDocumentFilter(visitor.getParentNamedTable(), visitor.getQueryNamedTable(),
this.metadata, ssv.toString(), Action.ADD);
}
this.marshaller = MarshallerBuilder.getMarshaller(table, this.metadata, docFilter);
this.connection.registerMarshaller(this.marshaller);
// if the message in defined in different cache than the default, switch it out now.
RemoteCache<Object, Object> cache = getCache(table, connection);
results = new InfinispanResponse(cache, queryStr, this.executionContext.getBatchSize(), visitor.getRowLimit(),
visitor.getRowOffset(), visitor.getProjectedDocumentAttributes(), visitor.getDocumentNode());
} finally {
this.connection.unRegisterMarshaller(this.marshaller);
}
}
@Override
public List<?> next() throws TranslatorException, DataNotAvailableException {
try {
this.connection.registerMarshaller(this.marshaller);
return results.getNextRow();
} finally {
this.connection.unRegisterMarshaller(this.marshaller);
}
}
@Override
public void close() {
}
@Override
public void cancel() throws TranslatorException {
}
static RemoteCache<Object, Object> getCache(Table table, InfinispanConnection connection) throws TranslatorException {
RemoteCache<Object, Object> cache = (RemoteCache<Object, Object>)connection.getCache();
String cacheName = table.getProperty(ProtobufMetadataProcessor.CACHE, false);
if (cacheName != null && !cacheName.equals(connection.getCache().getName())) {
cache = ((RemoteCacheManager)connection.getCacheFactory()).getCache(cacheName);
}
return cache;
}
}