/*
* 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.olap;
import java.sql.Connection;
import java.sql.SQLException;
import javax.sql.DataSource;
import org.olap4j.OlapConnection;
import org.olap4j.OlapWrapper;
import org.teiid.language.Call;
import org.teiid.logging.LogConstants;
import org.teiid.logging.LogManager;
import org.teiid.metadata.MetadataFactory;
import org.teiid.metadata.Procedure;
import org.teiid.metadata.ProcedureParameter;
import org.teiid.metadata.RuntimeMetadata;
import org.teiid.metadata.BaseColumn.NullType;
import org.teiid.metadata.ProcedureParameter.Type;
import org.teiid.translator.ExecutionContext;
import org.teiid.translator.ExecutionFactory;
import org.teiid.translator.ProcedureExecution;
import org.teiid.translator.Translator;
import org.teiid.translator.TranslatorException;
import org.teiid.translator.TypeFacility;
@Translator(name="olap", description="A translator for OLAP Cubes")
public class OlapExecutionFactory extends ExecutionFactory<DataSource, Connection> {
private static final String INVOKE_MDX = "invokeMdx"; //$NON-NLS-1$
@Override
public void getMetadata(MetadataFactory metadataFactory, Connection conn) throws TranslatorException {
Procedure p = metadataFactory.addProcedure(INVOKE_MDX);
p.setAnnotation("Invokes a XMLA webservice with provided MDX query that returns an XML result"); //$NON-NLS-1$
// mdx query in xml form
ProcedureParameter param = metadataFactory.addProcedureParameter("request", TypeFacility.RUNTIME_NAMES.STRING, Type.In, p); //$NON-NLS-1$
param.setAnnotation("The MDX query to execute"); //$NON-NLS-1$
param.setNullType(NullType.Nullable);
metadataFactory.addProcedureResultSetColumn("tuple", TypeFacility.RUNTIME_NAMES.OBJECT, p); //$NON-NLS-1$
}
@Override
public ProcedureExecution createProcedureExecution(Call command, ExecutionContext executionContext, RuntimeMetadata metadata, Connection connection) throws TranslatorException {
return new OlapQueryExecution(command, unwrap(connection), executionContext, this);
}
private OlapConnection unwrap(Connection conn) throws TranslatorException {
try {
OlapWrapper wrapper = conn.unwrap(OlapWrapper.class);
OlapConnection olapConn = wrapper.unwrap(OlapConnection.class);
return olapConn;
} catch(SQLException e) {
throw new TranslatorException(e);
}
}
@Override
public Connection getConnection(DataSource ds)
throws TranslatorException {
try {
return ds.getConnection();
} catch (SQLException e) {
throw new TranslatorException(e);
}
}
@Override
public void closeConnection(Connection connection, DataSource factory) {
if (connection == null) {
return;
}
try {
connection.close();
} catch (SQLException e) {
LogManager.logDetail(LogConstants.CTX_CONNECTOR, e, "Error closing"); //$NON-NLS-1$
}
}
}