/// <summary>
/// Creates a immutable dependency graph
/// </summary>
/// <param name="dataFormat"> a data format that describes the label types (or the columns in the input and output) </param>
/// <param name="sourceGraph"> a dependency graph that implements the interface org.maltparser.core.syntaxgraph.DependencyStructure </param>
/// <param name="defaultRootLabel"> the default root label </param>
/// <exception cref="MaltChainedException"> </exception>
public ConcurrentDependencyGraph(DataFormat.DataFormat dataFormat, IDependencyStructure sourceGraph, string defaultRootLabel)
{
DataFormat = dataFormat;
nodes = new ConcurrentDependencyNode[sourceGraph.NDependencyNode()];
// Add nodes
nodes[0] = new ConcurrentDependencyNode(this, 0, null); // ROOT
foreach (int index in sourceGraph.TokenIndices)
{
DependencyNode gNode = sourceGraph.GetDependencyNode(index);
string[] columns = new string[dataFormat.NumberOfColumns()];
for (int i = 0; i < dataFormat.NumberOfColumns(); i++)
{
ColumnDescription column = dataFormat.GetColumnDescription(i);
if (!column.Internal)
{
if (column.Category == ColumnDescription.Input)
{
columns[i] = gNode.getLabelSymbol(sourceGraph.SymbolTables.getSymbolTable(column.Name));
}
else if (column.Category == ColumnDescription.Head)
{
if (gNode.hasHead())
{
columns[i] = Convert.ToString(gNode.HeadEdge.Source.Index);
}
else
{
columns[i] = Convert.ToString(-1);
}
}
else if (column.Category == ColumnDescription.DependencyEdgeLabel)
{
SymbolTable sourceTable = sourceGraph.SymbolTables.getSymbolTable(column.Name);
if (gNode.HeadEdge.hasLabel(sourceTable))
{
columns[i] = gNode.HeadEdge.getLabelSymbol(sourceTable);
}
else
{
columns[i] = defaultRootLabel;
}
}
else
{
columns[i] = "_";
}
}
}
nodes[index] = new ConcurrentDependencyNode(this, index, columns);
}
}
internal ConcurrentDependencyEdge(DataFormat.DataFormat dataFormat, ConcurrentDependencyNode source, ConcurrentDependencyNode target, SortedDictionary <int, string> labels)
{
Source = source ?? throw new ConcurrentGraphException("Not allowed to have an edge without a source node");
Target = target ?? throw new ConcurrentGraphException("Not allowed to have an edge without a target node");
if (Target.Index == 0)
{
throw new ConcurrentGraphException("Not allowed to have an edge target as root node");
}
this.labels = new SortedDictionary <int, string>();
if (labels != null)
{
foreach (int i in labels.Keys)
{
if (dataFormat.GetColumnDescription(i).Category == ColumnDescription.DependencyEdgeLabel)
{
this.labels[i] = labels[i];
}
}
}
}