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Date: Mon, 25 Feb 2013 17:30:13 +0000 (UTC)
From: "Maja Kabiljo (JIRA)" <jira@apache.org>
To: giraph-dev@incubator.apache.org
Message-ID: <JIRA.12633340.1361429944733.334566.1361813413263@arcas>
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Subject: [jira] [Commented] (GIRAPH-529) Compile error when compiling the
 giraph shortest path problem: getOutEdgeMap()
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    [ https://issues.apache.org/jira/browse/GIRAPH-529?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13586024#comment-13586024 ] 

Maja Kabiljo commented on GIRAPH-529:
-------------------------------------

That example on the github was written very long time ago, and API changed a lot since then. There is no getOutEdgeMap() method anymore, you should call vertex.getEdges() to get edge iterator. You can also take a look at SimpleShortestPathsVertex in the giraph-examples.
                
> Compile error when compiling the giraph shortest path problem: getOutEdgeMap()
> ------------------------------------------------------------------------------
>
>                 Key: GIRAPH-529
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-529
>             Project: Giraph
>          Issue Type: Bug
>         Environment: Fedora 18(64-bit), hadoop-1.0.4 version, giraph-0.1.0 version
>            Reporter: eunjihwang
>
> I have some problem when I compiling the giraph shortest path problem
> I can't understand exactly getOutEdgeMap() method.
> Should I implement it? 
> and also I have other compile errors.
> I just write a source code like this; https://github.com/aching/Giraph/wiki/Shortest-Paths-Example
> I attach error messages.
> --------------------
> sp/SimpleShortestPathVertex.java:55: error: cannot find symbol 
> for(Edge<LongWritable, FloatWritable> edge : getOutEdgeMap().values()){ 
>                                              ^ 
>   symbol:   method getOutEdgeMap() 
>   location: class SimpleShortestPathVertex 
> sp/SimpleShortestPathVertex.java:74: error: cannot find symbol 
> FileInputFormat.addInputPath(job, new Path(args[0])); 
> ^ 
>   symbol:   variable FileInputFormat 
>   location: class SimpleShortestPathVertex 
> sp/SimpleShortestPathVertex.java:75: error: cannot find symbol 
> FileOutputFormat.setOutputPath(job, new Path(args[1])); 
> ^ 
>   symbol:   variable FileOutputFormat 
>   location: class SimpleShortestPathVertex 
> sp/SimpleShortestPathVertex.java:88: error: no suitable method found for run(SimpleShortestPathVertex,String[]) 
> System.exit(ToolRunner.run(new SimpleShortestPathVertex(), args)); 
>                       ^ 
>     method ToolRunner.run(Tool,String[]) is not applicable 
>       (actual argument SimpleShortestPathVertex cannot be converted to Tool by method invocation conversion) 
>     method ToolRunner.run(Configuration,Tool,String[]) is not applicable 
>       (actual and formal argument lists differ in length) 
> sp/SimpleShortestPathVertex.java:100: error: SimpleShortestPathVertexReader is not abstract and does not override abstract method getCurrentVertex() in VertexReader 
> class SimpleShortestPathVertexReader extends TextVertexReader<LongWritable, DoubleWritable, FloatWritable, DoubleWritable>{ 
> ^ 
> sp/SimpleShortestPathVertex.java:121: error: method addEdge in class MutableVertex<I,V,E,M> cannot be applied to given types; 
> vertex.addEdge(new Edge<LongWritable, FloatWritable>(new LongWritable(jEdge.getLong(0)), new FloatWritable((float)jEdge.getDouble(1)))); 
>       ^ 
>   required: LongWritable,FloatWritable 
>   found: Edge<LongWritable,FloatWritable> 
>   reason: actual and formal argument lists differ in length 
>   where I,V,E,M are type-variables: 
>     I extends WritableComparable declared in class MutableVertex 
>     V extends Writable declared in class MutableVertex 
>     E extends Writable declared in class MutableVertex 
>     M extends Writable declared in class MutableVertex 
> sp/SimpleShortestPathVertex.java:139: error: lineRecordWriter has private access in TextVertexWriter 
> super(lineRecordWriter); 
>       ^ 
> sp/SimpleShortestPathVertex.java:150: error: cannot find symbol 
> for(Edge<LongWritable, FloatWritable> edge : vertex.getOutEdgeMap().values()){ 
>                                                    ^ 
>   symbol:   method getOutEdgeMap() 
>   location: variable vertex of type BasicVertex<LongWritable,DoubleWritable,FloatWritable,?> 
> 8 errors 

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