/*
* 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.jdbc;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;
import org.teiid.language.Argument;
import org.teiid.language.Command;
import org.teiid.logging.LogConstants;
import org.teiid.logging.LogManager;
import org.teiid.translator.DataNotAvailableException;
import org.teiid.translator.ExecutionContext;
import org.teiid.translator.ProcedureExecution;
import org.teiid.translator.TranslatorException;
import org.teiid.translator.TypeFacility;
public class JDBCDirectQueryExecution extends JDBCQueryExecution implements ProcedureExecution {
protected int columnCount;
private List<Argument> arguments;
protected int updateCount = -1;
public JDBCDirectQueryExecution(List<Argument> arguments, Command command, Connection connection, ExecutionContext context, JDBCExecutionFactory env) {
super(command, connection, context, env);
this.arguments = arguments;
}
@Override
public void execute() throws TranslatorException {
String sourceSQL = (String) this.arguments.get(0).getArgumentValue().getValue();
List<Argument> parameters = this.arguments.subList(1, this.arguments.size());
LogManager.logDetail(LogConstants.CTX_CONNECTOR, "Source-specific command: ", sourceSQL); //$NON-NLS-1$
context.logCommand(sourceSQL);
int paramCount = parameters.size();
try {
Statement stmt;
boolean hasResults = false;
if(paramCount > 0) {
PreparedStatement pstatement = getPreparedStatement(sourceSQL);
for (int i = 0; i < paramCount; i++) {
Argument arg = parameters.get(i);
//TODO: if ParameterMetadata is supported we could use that type
this.executionFactory.bindValue(pstatement, arg.getArgumentValue().getValue(), arg.getArgumentValue().getType(), i + 1);
}
stmt = pstatement;
hasResults = pstatement.execute();
}
else {
//TODO: when array support becomes more robust calling like "exec native('sql', ARRAY[]) could still be prepared
stmt = getStatement();
hasResults = stmt.execute(sourceSQL);
}
if (hasResults) {
this.results = stmt.getResultSet();
this.columnCount = this.results.getMetaData().getColumnCount();
}
else {
this.updateCount = stmt.getUpdateCount();
}
addStatementWarnings();
} catch (SQLException e) {
throw new JDBCExecutionException(JDBCPlugin.Event.TEIID11008, e, sourceSQL);
}
}
@Override
public List<?> next() throws TranslatorException, DataNotAvailableException {
try {
ArrayList<Object[]> row = new ArrayList<Object[]>(1);
if (this.results != null) {
if (this.results.next()) {
// New row for result set
List<Object> vals = new ArrayList<Object>(this.columnCount);
for (int i = 0; i < this.columnCount; i++) {
// Convert from 0-based to 1-based
Object value = this.executionFactory.retrieveValue(this.results, i+1, TypeFacility.RUNTIME_TYPES.OBJECT);
vals.add(value);
}
row.add(vals.toArray(new Object[vals.size()]));
return row;
}
}
else if (this.updateCount != -1) {
List<Object> vals = new ArrayList<Object>(1);
vals.add(new Integer(this.updateCount));
this.updateCount = -1;
row.add(vals.toArray(new Object[vals.size()]));
return row;
}
} catch (SQLException e) {
throw new TranslatorException(e,JDBCPlugin.Util.getString("JDBCTranslator.Unexpected_exception_translating_results___8", e.getMessage())); //$NON-NLS-1$
}
return null;
}
@Override
public List<?> getOutputParameterValues() throws TranslatorException {
return null; //could support as an array of output values via given that the native procedure returns an array value
}
}