/*
* 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.flow.iso;
import java.io.IOException;
import cascading.flow.FlowProcess;
import cascading.scheme.NullScheme;
import cascading.tap.Tap;
import cascading.tuple.Fields;
import cascading.tuple.TupleEntryCollector;
import cascading.tuple.TupleEntryIterator;
/**
*
*/
public class NonTap extends Tap
{
String identifier = "non-tap-" + System.identityHashCode( this );
public NonTap( String identifier )
{
this();
this.identifier = identifier;
}
public NonTap()
{
super( new NullScheme( Fields.UNKNOWN, Fields.ALL ) );
}
public NonTap( String identifier, Fields fields )
{
this( fields );
this.identifier = identifier;
}
public NonTap( Fields fields )
{
super( new NullScheme( fields, fields ) );
}
@Override
public String getIdentifier()
{
return identifier;
}
@Override
public TupleEntryIterator openForRead( FlowProcess flowProcess, Object object ) throws IOException
{
return null;
}
@Override
public TupleEntryCollector openForWrite( FlowProcess flowProcess, Object object ) throws IOException
{
return null;
}
@Override
public boolean createResource( Object conf ) throws IOException
{
return false;
}
@Override
public boolean deleteResource( Object conf ) throws IOException
{
return false;
}
@Override
public boolean resourceExists( Object conf ) throws IOException
{
return false;
}
@Override
public long getModifiedTime( Object conf ) throws IOException
{
return 0;
}
}