public HParameter(FNode Value)
{
this._affinity = HParameterAffinity.Expression;
this._expression = Value;
this._expression_set = new FNodeSet();
this._expression_set.Add(Value); // in case a set of one was passed
}
private static void Update(Record Data, Key K, FNodeSet Fields)
{
int idx = 0;
for (int i = 0; i < K.Count; i++)
{
idx = K[i];
Data[idx] = Fields[i].Evaluate();
}
}
// RecordSet SELECTS //
public static RecordSet SELECT(DataSet Data, FNodeSet Nodes, Predicate Where)
{
RecordSet rs = new RecordSet(Nodes.Columns);
RecordWriter w = rs.OpenWriter();
FastReadPlan plan = new FastReadPlan(Data, Where, Nodes, w);
plan.Execute();
w.Close();
return rs;
}
public UpdatePlan(DataSet Data, Key K, FNodeSet Fields, Predicate BaseDataFilter)
: base()
{
this._data = Data;
this._keys = K;
this._values = Fields;
this._where = BaseDataFilter;
this.Name = "UPDATE";
}
// Table SELECTS //
public static Table SELECT(string Dir, string Name, DataSet Data, FNodeSet Nodes, Predicate Where)
{
Table rs = new Table(Dir, Name, Nodes.Columns);
RecordWriter w = rs.OpenWriter();
FastReadPlan plan = new FastReadPlan(Data, Where, Nodes, w);
plan.Execute();
w.Close();
return rs;
}
public RowCluster(string Name, DataSet Data, Predicate Where, FNodeSet Fields, FNode Weight, int Count)
{
this._data = Data;
this._where = Where;
this._fields = Fields;
this._count = Count;
this._rule = new RowClusterRuleEuclid();
this._initializer = new RowClusterInitializerSpectrum();
this._means = this._initializer.Initialize(Data, Where, Fields, Count);
this._weight = Weight;
this.Name = Name;
}
public TNodeAppendTo(TNode Parent, RecordWriter Writer, FNodeSet Output)
: base(Parent)
{
// Check that the column count is the same; we dont care about the schema //
if (Writer.SourceSchema.Count != Output.Count)
throw new Exception("Attempting to write a different number of recors to a stream");
this._writer = Writer;
this._output = Output;
}
public TNodeAppendToChunkAsync(TNode Parent, RecordSet UseParentData, FNodeSet UseFields)
: base(Parent)
{
if (UseParentData.Columns.GetHashCode() != UseFields.Columns.GetHashCode())
throw new Exception("Output table and fields passed are not compatible");
this._ParentData = UseParentData;
this._RecordCache = new RecordSet(UseParentData.Columns);
this._Fields = UseFields;
}
public GeneralizedLinearModel(string Name, DataSet Data, Predicate Where, FNode Expected, FNodeSet Actual, FNode Weight, Lambda LinkFunction)
: base(Name, Data, Where, Expected, Actual, Weight)
{
int val = IsCorrectLink(LinkFunction);
if (val == -1)
throw new Exception("Link function must have exactly one argument");
else if (val == -2)
throw new Exception("Link function is not differentiable");
this._Link = LinkFunction;
}
public static DataSet GetData(Workspace Enviro, FNodeSet Nodes, HScriptParser.Return_actionContext context)
{
// Get the table name //
string name = context.full_table_name().table_name().IDENTIFIER().GetText();
string db =
(context.full_table_name().database_name() == null)
? "global"
: context.full_table_name().database_name().GetText();
// Figure out if we need to append //
bool appendto =
(context.K_INSERT() != null)
? true
: false;
// Global -- Append //
if (context.full_table_name().database_name() == null && appendto)
{
if (Enviro.ChunkHeap.Exists(name))
return Enviro.ChunkHeap[name];
throw new HScriptCompileException(string.Format("Chunk '{0}' does not exist", name));
}
// Static -- Append //
if (appendto)
{
string fullname = db + "." + name;
if (Enviro.Exists(db, name))
return Enviro.GetStaticTable(db, name);
throw new HScriptCompileException(string.Format("Table '{0}' does not exist", fullname));
}
// Global -- Create New //
if (context.full_table_name().database_name() == null)
{
RecordSet data = new RecordSet(Nodes.Columns);
Enviro.ChunkHeap.Reallocate(name, data);
return data;
}
// Static -- Create New //
string dir = Enviro.Connections[db];
Table t = new Table(dir, name, Nodes.Columns);
return t;
}
public AggregatePlan(RecordWriter Output, DataSet Source, Predicate Filter, FNodeSet Keys, AggregateSet Aggregates, FNodeSet ReturnSet,
StaticRegister BaseMem, StaticRegister ReturnMem, string TempDir)
: base()
{
this._writer = Output;
this._source = Source;
this._filter = Filter;
this._keys = Keys ?? new FNodeSet();
this._aggregates = Aggregates;
this._returnset = ReturnSet;
this._basememory = BaseMem;
this._returnmemory = ReturnMem;
this._sink = TempDir ?? Source.Directory;
this.Name = "AGGREGATE";
}
public override FNode ModelExpected(FNodeSet Inputs)
{
if (Inputs.Count != this._XValue.Count)
throw new ArgumentException("The inputs passed are not the same size as the model inputs");
FNode n = Inputs.Nodes.First().CloneOfMe() * FNodeFactory.Value(this.Beta[0]);
for (int i = 1; i < Inputs.Count; i++)
{
n += Inputs[i].CloneOfMe() * FNodeFactory.Value(this.Beta[i]);
}
return n;
}
public static long Update(DataSet Data, Key K, FNodeSet Fields, Predicate BaseDataFilter)
{
// Check that the field indicies and the maps have the same length //
if (K.Count != Fields.Count)
throw new Exception(string.Format("Field collection passed [{0}] has fewer elements than the map collection passed [{0}]", K.Count, Fields.Count));
// Create the total append count //
long CountOf = 0;
// Loop through each extent //
foreach (RecordSet rs in Data.Extents)
{
// Open a stream //
RecordReader rr = new RecordReader(rs, BaseDataFilter);
// Create a register //
Register mem = new StreamRegister(rr);
// Assign the register to the fields //
Fields.AssignRegister(mem);
// Update the data //
while (!rr.EndOfData)
{
Update(rr.Read(), K, Fields);
CountOf++;
rr.Advance();
}
//
if (rs.IsAttached)
BinarySerializer.Flush(rs);
}
// No need to flush the data set //
return CountOf;
}
private static void AppendSet(ExpressionVisitor Evaluator, FNodeSet Fields, HScriptParser.Expression_or_wildcardContext context)
{
if (context is HScriptParser.EOW_expressionContext)
{
AppendSet(Evaluator, Fields, context as HScriptParser.EOW_expressionContext);
return;
}
if (context is HScriptParser.EOW_local_starContext)
{
AppendSet(Evaluator, Fields, context as HScriptParser.EOW_local_starContext);
return;
}
if (context is HScriptParser.EOW_global_starContext)
{
AppendSet(Evaluator, Fields, context as HScriptParser.EOW_global_starContext);
return;
}
if (context is HScriptParser.EOW_table_starContext)
{
AppendSet(Evaluator, Fields, context as HScriptParser.EOW_table_starContext);
return;
}
if (context is HScriptParser.EOW_tables_starContext)
{
AppendSet(Evaluator, Fields, context as HScriptParser.EOW_tables_starContext);
return;
}
}
private static void AppendSet(ExpressionVisitor Evaluator, FNodeSet Fields, HScriptParser.EOW_table_starContext context)
{
string alias = context.IDENTIFIER()[0].GetText();
if (!Evaluator.Columns.ContainsKey(alias))
throw new Exception(string.Format("Alias '{0}' does not exist", alias));
FNodeSet nodes = new FNodeSet(Evaluator.Columns[alias]);
nodes.AssignRegister(Evaluator.Registers[alias]);
string suffix = (context.K_AS() == null) ? null : context.IDENTIFIER()[1].GetText();
for (int i = 0; i < nodes.Count; i++)
{
Fields.Add((suffix == null) ? nodes.Alias(i) : suffix + nodes.Alias(i), nodes[i]);
}
}
// Expression or wildcard handelers //
private static void AppendSet(ExpressionVisitor Evaluator, FNodeSet Fields, HScriptParser.EOW_expressionContext context)
{
FNode node = Evaluator.ToNode(context.expression_alias().expression());
string alias = ("F" + Fields.Count.ToString());
if (node.Name != null)
alias = node.Name;
if (context.expression_alias().K_AS() != null)
alias = context.expression_alias().IDENTIFIER().GetText();
Fields.Add(alias, node);
}
public static FNodeSet Gradients(FNode Equation, Dictionary<string,int> Map)
{
FNodeSet nodes = new FNodeSet();
foreach (KeyValuePair<string, int> kv in Map)
{
FNode dx = FNodeGradient.Gradient(Equation, kv.Key);
nodes.Add(kv.Key, dx);
}
return nodes;
}
public HParameter(FNodeSet Value)
{
this._affinity = HParameterAffinity.ExpressionSet;
this._expression_set = Value;
this._expression = Value[0];
}
public override FNode ModelExpected(FNodeSet Inputs)
{
return ModelExpected(Inputs.Nodes.First());
}
public RecordSet ToFinal(FNodeSet Fields)
{
return this.ToFinal(Fields, Predicate.TrueForAll);
}
public static FNodeSet BindNodes(FNodeSet Gradients, CellVector Parameters, Dictionary<string, int> Map)
{
if (Gradients.Count != Parameters.Count)
throw new ArgumentException("The node collection and parameter vector must be the same size");
FNodeSet nodes = new FNodeSet();
for (int i = 0; i < Gradients.Count; i++)
{
FNode t = NonlinearRegressionModel.BindNode(Gradients[i], Parameters, Map);
nodes.Add(Gradients.Alias(i), t);
}
return nodes;
}
public RecordSet ToFinal()
{
Schema s = Schema.Join(this._Maps.Columns, this._Reducers.GetSchema);
FNodeSet leafs = new FNodeSet(s);
return ToFinal(leafs);
}
private static void AppendSet(ExpressionVisitor Evaluator, FNodeSet Fields, HScriptParser.EOW_global_starContext context)
{
string suffix =
(context.K_AS() == null)
? null
: context.IDENTIFIER().GetText();
for (int i = 0; i < Evaluator.GlobalHeap.Scalars.Count; i++)
{
string alias =
(suffix == null)
? Evaluator.LocalHeap.Scalars.Name(i)
: suffix + Evaluator.LocalHeap.Scalars.Name(i);
FNode node = new FNodeHeapRef(null, Evaluator.GlobalHeap, i);
Fields.Add(alias, node);
}
}
public void WriteToFinal(RecordWriter Writter, FNodeSet Fields)
{
if (Writter.SourceSchema != Fields.Columns)
throw new Exception("Base stream and output schema are different");
// Create a static register //
StaticRegister reg = new StaticRegister(null);
// Assign the register to the leaf node set //
Fields.AssignRegister(reg);
// Load //
foreach (KeyValuePair<Record, CompoundRecord> t in this._cache)
{
// Assign the value to the register //
reg.Assign(Record.Join(t.Key, this._Reducers.Evaluate(t.Value)));
// Evaluate the record //
Record r = Fields.Evaluate();
// Write //
Writter.Insert(r);
}
}
private static void AppendSet(ExpressionVisitor Evaluator, FNodeSet Fields, HScriptParser.EOW_tables_starContext context)
{
if (Evaluator.Columns.Count == 0)
return; // no need to toss an exception
string alias = Evaluator.Columns.Keys.First();
FNodeSet nodes = new FNodeSet(Evaluator.Columns[alias]);
nodes.AssignRegister(Evaluator.Registers[alias]);
string suffix = (context.K_AS() == null) ? null : context.IDENTIFIER().GetText();
for (int i = 0; i < nodes.Count; i++)
{
Fields.Add((suffix == null) ? nodes.Alias(i) : suffix + nodes.Alias(i), nodes[i]);
}
}
public void WriteToFinal(RecordWriter Writter)
{
Schema s = Schema.Join(this._Maps.Columns, this._Reducers.GetSchema);
FNodeSet leafs = new FNodeSet(s);
this.WriteToFinal(Writter, leafs);
}
public static FNodeSet GetReturnStatement(ExpressionVisitor Evaluator, HScriptParser.Expression_or_wildcard_setContext context)
{
FNodeSet nodes = new FNodeSet();
foreach (HScriptParser.Expression_or_wildcardContext ctx in context.expression_or_wildcard())
AppendSet(Evaluator, nodes, ctx);
return nodes;
}
// Constructor //
public KeyValueSet(FNodeSet Fields, AggregateSet Aggregates)
{
this._Maps = Fields;
this._Reducers = Aggregates;
this._cache = new Dictionary<Record, CompoundRecord>(Fields.Columns.NullRecord);
}
public static FNodeSet CompactTree(FNodeSet Tree)
{
FNodeSet t = new FNodeSet();
foreach (FNode n in Tree.Nodes)
t.Add(CompactNode(n));
return t;
}
public static KeyValueSet Open(Header h, FNodeSet Fields, AggregateSet CR)
{
RecordSet rs = BinarySerializer.BufferRecordSet(h.Path);
KeyValueSet gbs = new KeyValueSet(Fields, CR);
gbs.ImportFromInterim(rs);
return gbs;
}