BplusNode MaterializeNodeAtIndex(int myposition)
{
if (this.isLeaf)
{
throw new BplusTreeException("cannot materialize child for leaf");
}
long childBufferNumber = this.ChildBufferNumbers[myposition];
if (childBufferNumber==BplusTreeLong.NULLBUFFERNUMBER)
{
throw new BplusTreeException("can't search null subtree at position "+myposition+" in "+this.myBufferNumber);
}
// is it already materialized?
BplusNode result = this.MaterializedChildNodes[myposition];
if (result!=null)
{
return result;
}
// otherwise read it in...
result = new BplusNode(this.owner, this, myposition, true); // dummy isLeaf value
result.LoadFromBuffer(childBufferNumber);
this.MaterializedChildNodes[myposition] = result;
// no longer terminal
this.owner.ForgetTerminalNode(this);
return result;
}
BplusNode MaterializeNodeAtIndex(int myposition)
{
if (IsLeaf)
{
throw new BplusTreeException("cannot materialize child for leaf");
}
var childBufferNumber = m_childBufferNumbers[myposition];
if (childBufferNumber==BplusTreeLong.Nullbuffernumber)
{
throw new BplusTreeException("can't search null subtree at position "+myposition+" in "+MyBufferNumber);
}
// is it already materialized?
var result = m_materializedChildNodes[myposition];
if (result!=null)
{
return result;
}
// otherwise read it in...
result = new BplusNode(m_owner, this, myposition, true); // dummy isLeaf value
result.LoadFromBuffer(childBufferNumber);
m_materializedChildNodes[myposition] = result;
// no longer terminal
m_owner.ForgetTerminalNode(this);
return result;
}