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C++ GiSTentry::IsEqual方法代码示例

本文整理汇总了C++中GiSTentry::IsEqual方法的典型用法代码示例。如果您正苦于以下问题:C++ GiSTentry::IsEqual方法的具体用法?C++ GiSTentry::IsEqual怎么用?C++ GiSTentry::IsEqual使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在GiSTentry的用法示例。


在下文中一共展示了GiSTentry::IsEqual方法的2个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: ReadNode

// adjust the keys of node, which is used during the final phase of the BulkLoad algorithm
void
MT::AdjKeys (GiSTnode *node)
{
	if (node->Path().IsRoot()) {
		return;
	}

	GiSTpath parentPath = node->Path();
	parentPath.MakeParent ();
	GiSTnode *parentNode = ReadNode (parentPath);
	GiSTentry *parentEntry = parentNode->SearchPtr(node->Path().Page());  // parent entry
	assert (parentEntry != NULL);
	GiSTentry *unionEntry = node->Union();
	unionEntry->SetPtr(node->Path().Page());
	((MTkey *) unionEntry->Key())->distance = ((MTkey *) parentEntry->Key())->distance;  // necessary to keep track of the distance from the parent
	if (!parentEntry->IsEqual(*unionEntry)) {  // replace this entry
		parentNode->DeleteEntry(parentEntry->Position());
		parentNode->Insert(*unionEntry);
		WriteNode (parentNode);
		AdjKeys (parentNode);
	}
	delete unionEntry;
	delete parentEntry;
	delete parentNode;
}
开发者ID:jsc0218,项目名称:MxTree,代码行数:26,代码来源:BulkLoad.cpp

示例2: ReadNode

void 
GiST::AdjustKeys (GiSTnode *node, GiSTnode **parent)
{
	if (node->Path().IsRoot()) {
		return;
	}

	GiSTnode *P;
	// Read in node's parent
	if (parent == NULL) {
		GiSTpath parent_path = node->Path();
		parent_path.MakeParent ();
		P = ReadNode (parent_path);
		parent = &P;
	} else {
		P = *parent;
	}

	// Get the old entry pointing to node
	GiSTentry *entry = P->SearchPtr(node->Path().Page());

	assert (entry != NULL);

	// Get union of node
	GiSTentry *actual = node->Union();
	WriteNode(node);  // added by myself for the splitted = false;
	actual->SetPtr(node->Path().Page());
	if (!entry->IsEqual(*actual)) {
		int pos = entry->Position();
		P->DeleteEntry(pos);
		P->InsertBefore(*actual, pos);
		// A split may be necessary.
		// XXX: should we do Forced Reinsert here too?
		if (P->IsOverFull(*store)) {
			Split (parent, *actual);

			GiSTpage page = node->Path().Page();
			node->Path() = P->Path();
			node->Path().MakeChild(page);
		} else {
		    WriteNode (P);
			AdjustKeys (P, NULL);
		}
	}
	if (parent == &P) {
		delete P;
	}
	delete actual;
	delete entry;
}
开发者ID:jsc0218,项目名称:MxTree,代码行数:50,代码来源:GiST.cpp


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