internal void BuildDryadLinqAssembly(DryadLinqQueryGen queryGen)
{
lock (s_codeGenLock)
{
// this method only gets called from DryadLinqQueryGen.GenerateDryadProgram() before job submission.
// Since we don't load the generated vertex DLL after that, the check for
// "should re-gen?" below is based on m_generatedVertexDllPath being set
if (this.m_generatedVertexDllPath == null)
{
queryGen.CodeGenVisit();
this.BuildAssembly(false);
}
}
}
/// <summary>
/// Explain a query plan in terms of elementary operations.
/// </summary>
/// <param name="gen">Query generator.</param>
/// <returns>A string explaining the plan.</returns>
internal string Explain(DryadLinqQueryGen gen)
{
StringBuilder plan = new StringBuilder();
gen.CodeGenVisit();
this.CodeShowVisit(plan, gen.QueryPlan());
return plan.ToString();
}
/// <summary>
/// Create a dummy node with a specific code generator.
/// </summary>
/// <param name="queryGen">Query generator to instantiate.</param>
/// <param name="outputType">Type of the single output.</param>
/// <param name="partitionCount">The number of partitions.</param>
/// <param name="children">The upstream nodes</param>
internal DLinqDummyNode(DryadLinqQueryGen queryGen,
Type outputType,
int partitionCount,
params DLinqQueryNode[] children)
: base(QueryNodeType.Dummy, queryGen, null, children)
{
this.m_opName = "Dummy";
this.m_outputType = outputType;
this.m_outputDataSetInfo = new DataSetInfo();
this.m_partitionCount = partitionCount;
this.DynamicManager = DynamicManager.None;
}
internal DLinqInputNode(DryadLinqQueryGen queryGen, ConstantExpression queryExpr)
: base(QueryNodeType.InputTable, queryGen, queryExpr)
{
this.m_table = queryExpr.Value as DryadLinqQuery;
if (this.m_table == null)
{
throw DryadLinqException.Create(DryadLinqErrorCode.UnknownError, SR.InputMustBeDryadLinqSource, queryExpr);
}
if (!queryGen.Context.Equals(this.m_table.Context))
{
throw new DryadLinqException("This query was constructed using different DryadLinqContexts.");
}
if (TypeSystem.IsTypeOrAnyGenericParamsAnonymous(queryExpr.Type.GetGenericArguments()[0]))
{
throw DryadLinqException.Create(DryadLinqErrorCode.InputTypeCannotBeAnonymous,
SR.InputTypeCannotBeAnonymous,
queryExpr);
}
this.m_opName = "Input";
this.m_outputDataSetInfo = ((DryadLinqQuery)this.m_table).DataSetInfo;
this.m_partitionCount = this.m_outputDataSetInfo.partitionInfo.Count;
this.m_dynamicManager = DynamicManager.None;
}
internal DLinqQueryNode(QueryNodeType nodeType,
DryadLinqQueryGen queryGen,
Expression queryExpr,
params DLinqQueryNode[] children)
{
this.m_nodeType = nodeType;
this.m_queryGen = queryGen;
this.m_queryExpression = queryExpr;
this.m_parents = new List<DLinqQueryNode>(1);
this.m_children = children;
foreach (DLinqQueryNode child in children)
{
child.Parents.Add(this);
}
this.m_superNode = null;
this.m_isForked = false;
this.m_uniqueId = DryadLinqQueryGen.StartPhaseId;
this.m_channelType = ChannelType.DiskFile;
this.m_conOpType = ConnectionOpType.Pointwise;
this.m_opName = null;
this.m_vertexEntryMethod = null;
this.m_outputDataSetInfo = null;
this.m_partitionCount = -1;
this.m_dynamicManager = null;
}