/*
* Copyright (c) 2007-2013 Concurrent, Inc. All Rights Reserved.
*
* Project and contact information: http://www.cascading.org/
*
* This file is part of the Cascading project.
*
* Licensed 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 cascading.pattern.pmml;
import java.lang.reflect.Type;
import cascading.pattern.PatternException;
import cascading.pattern.datafield.CategoricalDataField;
import cascading.pattern.datafield.ContinuousDataField;
import cascading.pattern.datafield.DataField;
import org.dmg.pmml.DataType;
import org.dmg.pmml.OpType;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import static cascading.pattern.pmml.PMMLUtil.asStrings;
class DataFields
{
/** Field LOG */
private static final Logger LOG = LoggerFactory.getLogger( DataFields.class );
public static DataField createDataFields( org.dmg.pmml.DataField dataField )
{
String name = dataField.getName().getValue();
OpType optype = dataField.getOptype();
if( optype == OpType.CATEGORICAL )
return createCategoricalDataField( name, dataField );
else if( optype == OpType.CONTINUOUS )
return createContinuousDataField( name, dataField );
throw new UnsupportedOperationException( "unsupported optype: " + optype );
}
public static ContinuousDataField createContinuousDataField( String name, org.dmg.pmml.DataField dataField )
{
if( !dataField.getIntervals().isEmpty() )
throw new UnsupportedOperationException( "intervals not supported" );
DataType dataType = dataField.getDataType();
Type type = DataTypes.getPmmlToType( dataType );
return new ContinuousDataField( name, type );
}
public static CategoricalDataField createCategoricalDataField( String name, org.dmg.pmml.DataField dataField )
{
DataType dataType = dataField.getDataType();
Type type = DataTypes.getPmmlToType( dataType );
if( type == String.class )
return new CategoricalDataField( name, type, asStrings( dataField.getValues() ) );
String message = String.format( "unsupported data type: %s", dataType );
LOG.error( message );
throw new PatternException( message );
}
}