src: Rename aggregation edge to bundled edges (#1051)

The term aggregation is misleading. Bundled edges is a better definition for this type of edge.

closes #962

src/lib/data/graph/token_component/TokenComponentBundledEdges.cpp

@@ -0,0 +1,80 @@
+#include "TokenComponentBundledEdges.h"
+
+TokenComponentBundledEdges::Direction TokenComponentBundledEdges::opposite(Direction direction)
+{
+	if (direction == DIRECTION_FORWARD)
+	{
+		return DIRECTION_BACKWARD;
+	}
+	else if (direction == DIRECTION_BACKWARD)
+	{
+		return DIRECTION_FORWARD;
+	}
+
+	return direction;
+}
+
+TokenComponentBundledEdges::TokenComponentBundledEdges(): m_direction(DIRECTION_INVALID) {}
+
+TokenComponentBundledEdges::~TokenComponentBundledEdges() {}
+
+std::shared_ptr<TokenComponent> TokenComponentBundledEdges::copy() const
+{
+	return std::make_shared<TokenComponentBundledEdges>(*this);
+}
+
+int TokenComponentBundledEdges::getBundledEdgesCount() const
+{
+	return static_cast<int>(m_ids.size());
+}
+
+std::set<Id> TokenComponentBundledEdges::getBundledEdgesIds() const
+{
+	std::set<Id> ids;
+
+	for (const std::pair<Id, Direction>& p: m_ids)
+	{
+		ids.insert(p.first);
+	}
+
+	return ids;
+}
+
+void TokenComponentBundledEdges::addBundledEdgesId(Id id, bool forward)
+{
+	m_ids.emplace(id, forward ? DIRECTION_FORWARD : DIRECTION_BACKWARD);
+
+	m_direction = DIRECTION_INVALID;
+}
+
+void TokenComponentBundledEdges::removeBundledEdgesId(Id id)
+{
+	m_ids.erase(id);
+
+	m_direction = DIRECTION_INVALID;
+}
+
+TokenComponentBundledEdges::Direction TokenComponentBundledEdges::getDirection()
+{
+	if (m_direction != DIRECTION_INVALID)
+	{
+		return m_direction;
+	}
+
+	m_direction = DIRECTION_NONE;
+
+	for (const std::pair<Id, Direction>& p: m_ids)
+	{
+		if (m_direction == DIRECTION_NONE)
+		{
+			m_direction = p.second;
+		}
+		else if (m_direction != p.second)
+		{
+			m_direction = DIRECTION_NONE;
+			break;
+		}
+	}
+
+	return m_direction;
+}