Package org.marid.db.dao

Interface DaqWriter<T extends java.io.Serializable>

All Superinterfaces:

java.lang.AutoCloseable, DaqMXBean, DaqReader<T>

All Known Subinterfaces:

NumericWriter

public interface DaqWriter<T extends java.io.Serializable>
extends DaqReader<T>

Author:

Dmitry Ovchinnikov.

Method Summary

Modifier and Type	Method	Description
long	delete(long[] tags, long from, long to)	Clears data within the time range for the given tags.
long	delete(long from, long to)	Clears data within the time range.
java.util.Set<DataRecordKey>	merge(java.util.List<DataRecord<T>> records, boolean insertOnly)	Merges data.

Methods inherited from interface java.lang.AutoCloseable

close

Methods inherited from interface org.marid.db.dao.DaqMXBean

getRecordCount

Methods inherited from interface org.marid.db.dao.DaqReader

fetchRecord, fetchRecords, hash, tagCount, tags

Method Detail

delete

long delete(long from,
            long to)

Clears data within the time range.

Parameters:

from - Lower bound (inclusive).

to - Upper bound (exclusive).

Returns:

Count of removed records.

delete

long delete(long[] tags,
            long from,
            long to)

Clears data within the time range for the given tags.

Parameters:

tags - Tags.

from - Lower bound (inclusive).

to - Upper bound (exclusive).

Returns:

Count of removed records.

merge

java.util.Set<DataRecordKey> merge(java.util.List<DataRecord<T>> records,
                                   boolean insertOnly)

Merges data.

Parameters:

records - Data records.

insertOnly - Insert-only flag (if true, the values keep unchanged on key equality).

Returns:

Merge result.