Initial community commit

Src/nde/android/Record.cpp

@@ -0,0 +1,124 @@
+/* ---------------------------------------------------------------------------
+Nullsoft Database Engine
+--------------------
+codename: Near Death Experience
+--------------------------------------------------------------------------- */
+
+/* ---------------------------------------------------------------------------
+
+Record Class
+
+--------------------------------------------------------------------------- */
+
+//#include "record.h"
+#include "../nde.h"
+#include <stdio.h>
+
+void RecordBase::Retain()
+{
+	ref_count++;
+}
+
+void RecordBase::Release()
+{
+	if (--ref_count == 0)
+		delete this;
+}
+
+RecordBase::RecordBase()
+{
+	ref_count = 1;
+	InsertionPoint = 0;
+}
+
+//---------------------------------------------------------------------------
+Record::Record(int RecordPos,  int insertionPoint, VFILE *TableHandle, Table *ParentTable)
+{
+	InsertionPoint = insertionPoint;
+	Record *columns = ParentTable->GetColumns();
+	int max=columns ? columns->Fields.size() : 128;
+	if (RecordPos != 0)
+	{
+		int n=0;
+		uint32_t ThisPos = RecordPos;
+		while (ThisPos)
+		{
+			if (n >= max)
+				break;
+			Vfseek(TableHandle, ThisPos, SEEK_SET);
+			Field Entry (ThisPos);
+			Field *TypedEntry = Entry.ReadField(ParentTable, ThisPos, &ThisPos);
+
+			if (!TypedEntry) break; // some db error?
+
+			AddField(TypedEntry);
+			n++;
+		}
+	}
+}
+
+//---------------------------------------------------------------------------
+RecordBase::~RecordBase()
+{
+	Fields.deleteAll();
+}
+
+ColumnField *Record::GetColumnByName(const char *name)
+{
+	for (FieldList::iterator itr=Fields.begin();itr!=Fields.end();itr++)
+	{
+		ColumnField *p = (ColumnField *)*itr;
+		if (!strcasecmp(p->GetFieldName(), name))
+			return p;
+	}
+	return NULL;
+}
+
+
+//---------------------------------------------------------------------------
+int Record::WriteFields(Table *ParentTable, int RecordIndex)
+{
+	Field *previous = 0;
+	for (FieldList::iterator itr=Fields.begin();itr!=Fields.end();itr++)
+	{
+		Field *p = *itr;
+		p->WriteField(ParentTable, previous, (Field *)p->next);
+		previous = p;
+	}
+	return WriteIndex(ParentTable, RecordIndex);
+}
+
+//---------------------------------------------------------------------------
+int Record::WriteIndex(Table *ParentTable, int RecordIndex)
+{
+	int P=0;
+	if (RecordIndex == NEW_RECORD)
+		RecordIndex = ParentTable->index->Insert(InsertionPoint);
+	if (!Fields.empty())
+	{
+		Field *f = *Fields.begin();
+		P=f->GetFieldPos();
+	}
+	return ParentTable->index->Update(RecordIndex, P, this, FALSE);
+}
+
+//---------------------------------------------------------------------------
+void Record::Delete(Table *ParentTable, int RecordIndex)
+{
+	ParentTable->index->Delete(RecordIndex, ParentTable->index->Get(RecordIndex), this);
+}
+
+void Record::WalkFields(FieldsWalker callback, void *context)
+{
+	if (callback)
+	{
+		for (FieldList::iterator itr=Fields.begin();itr!=Fields.end();itr++)
+		{
+			if (!callback(this, *itr, context))
+				break;
+		}
+	}
+}
+
+
+