Package org.apache.iotdb.db.query.externalsort.adapter

Class ByTimestampReaderAdapter

java.lang.Object

org.apache.iotdb.db.query.externalsort.adapter.ByTimestampReaderAdapter

All Implemented Interfaces:

IReaderByTimestamp

public class ByTimestampReaderAdapter
extends java.lang.Object
implements IReaderByTimestamp

This class is an adapter which makes IPointReader implement IReaderByTimestamp interface.

Constructor Summary

Constructors

Constructor	Description
ByTimestampReaderAdapter(org.apache.iotdb.tsfile.read.reader.IPointReader pointReader)

Method Summary

Modifier and Type	Method	Description
java.lang.Object[]	getValuesInTimestamps(long[] timestamps, int length)	Returns the corresponding value under this timestamp.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.iotdb.db.query.reader.series.IReaderByTimestamp

readerIsEmpty

Constructor Detail

ByTimestampReaderAdapter

public ByTimestampReaderAdapter(org.apache.iotdb.tsfile.read.reader.IPointReader pointReader)

Method Detail

getValuesInTimestamps

public java.lang.Object[] getValuesInTimestamps(long[] timestamps,
                                                int length)
                                         throws java.io.IOException

Description copied from interface: IReaderByTimestamp

Returns the corresponding value under this timestamp. Returns null if no value under this timestamp.

Note that calling this method will change the status of this reader irreversibly just like next. The difference is that next moves one step forward while getValueInTimestamp advances towards the given timestamp.

Attention: DO call this method with monotonically increasing timestamps. There is no guarantee of correctness with any other way of calling. For example, DO NOT call this method twice with the same timestamp.

Specified by:

getValuesInTimestamps in interface IReaderByTimestamp

Throws:

java.io.IOException