Scan Filter (Embedded)

Scan Filter (Embedded) Type

Scan Filter (Embedded) is used to set a few elements for scan. Note this is mainly used for the primary keys.
For example if we wish to scan data like following;

Range : Key “abc” and key
“bcde” [ using skey_op and ekey_op of ScanFilter respectively ]
Limit : 100 (Limit By defines what)
Limit By : data size | number of rows Only Key : true (only keys), false (both key and value)
Reserved : There is reserved variable, used for certain cases

See below for detail API

C++

Java

To create scanFilter object

ScanFilter();

To set ScanOperator for skey

void set_skey_op(ScanOperator skey_op);

ScanOperator is an enum with values

GT,
GTE,
LT,
LTE,
EQ,
NE

Please see more on this at bangdb common

To get ScanOperator for skey

ScanOperator get_skey_op();

To set ScanOperator for ekey

void set_ekey_op(ScanOperator ekey_op);

ScanOperator is an enum with values

GT,
GTE,
LT,
LTE,
EQ,
NE

Please see more on this at bangdb common

To get ScanOperator for ekey

 ScanOperator get_ekey_op();

To set ScanLimitBy

void set_limit_by(ScanLimitBy limitby);

ScanLimitBy is an enum with values

LIMIT_INVALID = -1
LIMIT_RESULT_SIZE,
LIMIT_RESULT_ROW

To get the set ScanLimitBy value

ScanLimitBy get_limit_by();

To set limit

 void set_limit(int limit);

To get the set limit value

 int get_limit();

To set key flag

 void set_only_key(short flag);

To get status of set key

 short get_only_key();

To set reserved value

 void set_reserved(int reserved);

To get the value of reserved set

 int get_reserved();

To delete ScanFilter object

 virtual ~ScanFilter();

public ScanOperator skeyOp;

To set ScanOperator for skey

 public ScanOperator ekeyOp;

ScanOperator is an enum with values

GT,
GTE,
LT,
LTE,
EQ,
NE

Please see more on this at bangdb common

To set ScanLimitBy

public ScanLimitBy limitBy;

ScanLimitBy is an enum with values

LIMIT_INVALID = -1
LIMIT_RESULT_SIZE,
LIMIT_RESULT_ROW

To set to limit

public int limit;

To set to skip count

public int skipCount;

To set key flag

public int onlyKey;

To get filter Query

public ScanFilter()

To set filter

 public void setFilter()

To close scanfilter

 public synchronized void close()

On this page

ScanFilter (Embd)

Scan Filter (Embedded) Type