113 lines
2.4 KiB
C++
113 lines
2.4 KiB
C++
/*
|
|
* Copyright 2002-2009, Haiku, Inc. All Rights Reserved.
|
|
* Distributed under the terms of the MIT License.
|
|
*/
|
|
#ifndef _QUERY_H
|
|
#define _QUERY_H
|
|
|
|
|
|
#include <EntryList.h>
|
|
#include <Messenger.h>
|
|
#include <OS.h>
|
|
|
|
class BVolume;
|
|
struct entry_ref;
|
|
|
|
|
|
namespace BPrivate {
|
|
namespace Storage {
|
|
class QueryNode;
|
|
class QueryStack;
|
|
class QueryTree;
|
|
};
|
|
};
|
|
|
|
typedef enum {
|
|
B_INVALID_OP = 0,
|
|
B_EQ,
|
|
B_GT,
|
|
B_GE,
|
|
B_LT,
|
|
B_LE,
|
|
B_NE,
|
|
B_CONTAINS,
|
|
B_BEGINS_WITH,
|
|
B_ENDS_WITH,
|
|
B_AND = 0x101,
|
|
B_OR,
|
|
B_NOT,
|
|
_B_RESERVED_OP_ = 0x100000
|
|
} query_op;
|
|
|
|
|
|
class BQuery : public BEntryList {
|
|
public:
|
|
BQuery();
|
|
virtual ~BQuery();
|
|
|
|
status_t Clear();
|
|
|
|
status_t PushAttr(const char* attrName);
|
|
status_t PushOp(query_op op);
|
|
|
|
status_t PushUInt32(uint32 value);
|
|
status_t PushInt32(int32 value);
|
|
status_t PushUInt64(uint64 value);
|
|
status_t PushInt64(int64 value);
|
|
status_t PushFloat(float value);
|
|
status_t PushDouble(double value);
|
|
status_t PushString(const char* value,
|
|
bool caseInsensitive = false);
|
|
status_t PushDate(const char* date);
|
|
|
|
status_t SetVolume(const BVolume* volume);
|
|
status_t SetPredicate(const char* expression);
|
|
status_t SetTarget(BMessenger messenger);
|
|
|
|
bool IsLive() const;
|
|
|
|
status_t GetPredicate(char* buffer, size_t length);
|
|
status_t GetPredicate(BString* predicate);
|
|
size_t PredicateLength();
|
|
|
|
dev_t TargetDevice() const;
|
|
|
|
status_t Fetch();
|
|
|
|
// BEntryList interface
|
|
virtual status_t GetNextEntry(BEntry* entry, bool traverse = false);
|
|
virtual status_t GetNextRef(entry_ref* ref);
|
|
virtual int32 GetNextDirents(struct dirent* buffer, size_t length,
|
|
int32 count = INT_MAX);
|
|
virtual status_t Rewind();
|
|
virtual int32 CountEntries();
|
|
|
|
private:
|
|
bool _HasFetched() const;
|
|
status_t _PushNode(BPrivate::Storage::QueryNode* node,
|
|
bool deleteOnError);
|
|
status_t _SetPredicate(const char* expression);
|
|
status_t _EvaluateStack();
|
|
void _ParseDates(BString& parsedPredicate);
|
|
|
|
// FBC
|
|
virtual void _QwertyQuery1();
|
|
virtual void _QwertyQuery2();
|
|
virtual void _QwertyQuery3();
|
|
virtual void _QwertyQuery4();
|
|
virtual void _QwertyQuery5();
|
|
virtual void _QwertyQuery6();
|
|
|
|
private:
|
|
BPrivate::Storage::QueryStack* fStack;
|
|
char* fPredicate;
|
|
dev_t fDevice;
|
|
bool fLive;
|
|
port_id fPort;
|
|
long fToken;
|
|
int fQueryFd;
|
|
int32 _reservedData[4];
|
|
};
|
|
|
|
#endif // _QUERY_H
|