RecordFileScan.h Source File

00001 /*
00002  * RecordFileScan.h
00003  *
00004  *  Created on: Mar 28, 2010
00005  *      Author: green
00006  */
00007 
00008 #ifndef RECORDFILESCAN_H_
00009 #define RECORDFILESCAN_H_
00010 
00015 #include "RecordFileManager.h"
00016 #include "Record.h"
00017 
00028 typedef struct {
00029         AttributeType type;     
00030         int attrLength;         
00031         int attrOffset;     
00032         ComparisonOp compOp;
00033         union {
00034                 int value_i;    
00035                 float value_f;  
00036                 const char* value_str; 
00037         };      
00038 } RecordFileScanCondition;
00039 
00047 class RecordFileScan {
00048 public:
00049 
00050         RecordFileScan();
00051         ~RecordFileScan();
00052 
00075     ReturnCode openScan(RecordFileHandle *fileHandle, RecordFileScanCondition* condition);
00076 
00086     ReturnCode getNextRecord(Record *record);
00087 
00094     ReturnCode closeScan();
00095 
00096 };
00097 
00098 
00099 #endif /* RECORDFILESCAN_H_ */