Initial community commit

Src/nde/android/IndexRecord.cpp

@@ -0,0 +1,148 @@
+/* ---------------------------------------------------------------------------
+Nullsoft Database Engine
+--------------------
+codename: Near Death Experience
+--------------------------------------------------------------------------- */
+
+/* ---------------------------------------------------------------------------
+
+IndexRecord Class
+
+--------------------------------------------------------------------------- */
+
+#include "IndexRecord.h"
+#include "../nde.h"
+#include <stdio.h>
+
+IndexRecord::IndexRecord(int RecordPos, int insertionPoint, VFILE *TableHandle, Table *ParentTable)
+{
+	InsertionPoint = insertionPoint;
+	if (RecordPos != 0)
+	{
+		int n=0;
+		uint32_t ThisPos = RecordPos;
+		while (ThisPos)
+		{
+			if (n >= 128)
+				break;
+			Vfseek(TableHandle, ThisPos, SEEK_SET);
+			Field Entry (ThisPos);
+			Field *TypedEntry = Entry.ReadField(ParentTable, ThisPos, &ThisPos);
+
+			if (!TypedEntry) break; // some db error?
+
+			AddField(TypedEntry);
+			//			ThisPos = TypedEntry->GetNextFieldPos();
+			n++;
+		}
+	}
+}
+
+
+void IndexRecord::BuildCollaboration()
+{
+	for (FieldList::iterator itr=Fields.begin();itr!=Fields.end();itr++)
+	{
+		IndexField *p = (IndexField *)*itr;
+		if (p->next)
+			p->index->Colaborate((IndexField *)p->next);
+		else
+			p->index->Colaborate((IndexField *)*Fields.begin());
+	}
+}
+
+bool IndexRecord::NeedFix()
+{
+	for (FieldList::iterator itr=Fields.begin();itr!=Fields.end();itr++)
+	{
+		IndexField *p = (IndexField *)*itr;
+		if (p->index->NeedFix())
+			return true;
+	}
+	return false;
+}
+
+IndexField *IndexRecord::GetIndexByName(const char *name)
+{
+	for (FieldList::iterator itr=Fields.begin();itr!=Fields.end();itr++)
+	{
+		IndexField *p = (IndexField *)*itr;
+		if (!strcasecmp(p->GetIndexName(), name))
+			return p;
+	}
+	return NULL;
+}
+
+bool IndexRecord::CheckIndexing(int v)
+{
+	int i = v;
+	for (FieldList::iterator itr=Fields.begin();itr!=Fields.end();itr++)
+	{
+		IndexField *p = (IndexField *)*itr;
+		v = p->index->GetCooperative(v);
+	}
+	return v == i;
+}
+
+Field *RecordBase::GetField(unsigned char ID)
+{
+	for (FieldList::iterator itr=Fields.begin();itr!=Fields.end();itr++)
+	{
+		IndexField *p = (IndexField *)*itr;
+		if (p->GetFieldId() == ID)
+			return p;
+	}
+	return NULL;
+}
+
+void RecordBase::AddField(Field *field)
+{
+	if (!field)	return;
+	if (GetField(field->ID))
+		return;
+
+	Fields.push_back(field);
+}
+
+int IndexRecord::WriteFields(Table *ParentTable)
+{
+	Field *previous = 0;
+	for (FieldList::iterator itr=Fields.begin();itr!=Fields.end();itr++)
+	{
+		IndexField *p = (IndexField *)*itr;
+		p->WriteField(ParentTable, previous, (Field *)p->next);
+		previous = p;
+	}
+	return WriteIndex(ParentTable);
+}
+
+
+int IndexRecord::WriteIndex(Table *ParentTable)
+{
+	int P=0;
+	if (!Fields.empty())
+		P=(*Fields.begin())->GetFieldPos();
+	return ParentTable->index->Update(INDEX_RECORD_NUM, P, this, false);
+}
+
+void RecordBase::RemoveField(Field *field)
+{
+	if (!field)
+		return;
+	Fields.erase(field);
+	delete field;
+}
+
+void IndexRecord::WalkFields(FieldsWalker callback, void *context)
+{
+	if (callback)
+	{
+		for (FieldList::iterator itr=Fields.begin();itr!=Fields.end();itr++)
+		{
+			if (!callback(this, *itr, context))
+				break;
+
+		}
+	}
+}
+