/*
* Copyright (c) 2007-2014 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.lingual.optiq.enumerable;
import java.util.List;
import cascading.lingual.type.SQLDateCoercibleType;
import cascading.lingual.type.SQLTimeCoercibleType;
import cascading.tuple.Tuple;
import org.eigenbase.rex.RexLiteral;
/**
*
*/
public class EnumerableUtil
{
public static final SQLDateCoercibleType SQL_DATE_COERCIBLE_TYPE = new SQLDateCoercibleType();
public static final SQLTimeCoercibleType SQL_TIME_COERCIBLE_TYPE = new SQLTimeCoercibleType();
static Tuple createTupleFrom( List<RexLiteral> values )
{
Tuple tuple = Tuple.size( values.size() );
for( int i = 0; i < values.size(); i++ )
{
RexLiteral rexLiteral = values.get( i );
Object value = null;
String result;
// this overcomes an inconsistency in getValue2 with regard to date and time being
// canonically integers, but getValue2 returning long values.
// should be resolved in a future optiq release.
switch( rexLiteral.getType().getSqlTypeName() )
{
case DATE:
result = rexLiteral.toString();
if( !result.equals( "null" ) ) // workaround till first class support in optiq
value = SQL_DATE_COERCIBLE_TYPE.canonical( result );
break;
case TIME:
result = rexLiteral.toString();
if( !result.equals( "null" ) ) // workaround till first class support in optiq
value = SQL_TIME_COERCIBLE_TYPE.canonical( value );
break;
default:
value = rexLiteral.getValue2();
break;
}
tuple.set( i, value );
}
return tuple;
}
}