/*
* 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.query.processor.xml;
import static org.teiid.query.analysis.AnalysisRecord.*;
import org.teiid.client.plan.PlanNode;
import org.teiid.common.buffer.BlockedException;
import org.teiid.core.TeiidComponentException;
import org.teiid.core.TeiidProcessingException;
import org.teiid.logging.LogManager;
import org.teiid.query.mapping.xml.ResultSetInfo;
/**
* Executes a SQL statement, defines a result set.
*/
public class ExecSqlInstruction extends ProcessorInstruction {
private String resultSetName;
ResultSetInfo info;
public ExecSqlInstruction(String resultSetName, ResultSetInfo info) {
this.resultSetName = resultSetName;
this.info = info;
}
public XMLContext process(XMLProcessorEnvironment env, XMLContext context)
throws BlockedException, TeiidComponentException, TeiidProcessingException{
LogManager.logTrace(org.teiid.logging.LogConstants.CTX_XML_PLAN, new Object[]{"SQL: Result set DOESN'T exist:",resultSetName}); //$NON-NLS-1$
PlanExecutor executor = context.getResultExecutor(resultSetName);
if (executor == null) {
executor = env.createResultExecutor(resultSetName, info);
context.setResultExecutor(resultSetName, executor);
}
// this execute can throw the blocked exception
executor.execute(context.getReferenceValues());
// now that we done executing the plan; remove the plan from context
context.removeResultExecutor(resultSetName);
// save this executioner in the context, so that all the nodes
// below can access the data.
context.setResultSet(this.resultSetName, executor);
env.incrementCurrentProgramCounter();
return context;
}
public String toString() {
return "SQL " + resultSetName; //$NON-NLS-1$
}
public PlanNode getDescriptionProperties() {
PlanNode props = new PlanNode("EXECUTE SQL"); //$NON-NLS-1$
props.addProperty(PROP_RESULT_SET, this.resultSetName);
props.addProperty(PROP_SQL, this.info.getPlan().getDescriptionProperties());
return props;
}
}