Package org.apache.iotdb.db.mpp.transformation.dag.util

Class LayerCacheUtils

java.lang.Object

org.apache.iotdb.db.mpp.transformation.dag.util.LayerCacheUtils

public class LayerCacheUtils
extends java.lang.Object

Method Summary

Modifier and Type	Method	Description
static boolean	cachePoint(org.apache.iotdb.tsfile.file.metadata.enums.TSDataType dataType, LayerPointReader source, ElasticSerializableTVList target)
static int	cachePoints(org.apache.iotdb.tsfile.file.metadata.enums.TSDataType dataType, LayerPointReader source, ElasticSerializableTVList target, int pointNumber)
static boolean	cacheRow(IUDFInputDataSet source, ElasticSerializableRowRecordList target)
static int	cacheRows(IUDFInputDataSet source, ElasticSerializableRowRecordList target, int rowsNumber)
static YieldableState	yieldPoint(org.apache.iotdb.tsfile.file.metadata.enums.TSDataType dataType, LayerPointReader source, ElasticSerializableTVList target)
static YieldableState	yieldPoints(org.apache.iotdb.tsfile.file.metadata.enums.TSDataType dataType, LayerPointReader source, ElasticSerializableTVList target, int pointNumber)
static YieldableState	yieldRow(IUDFInputDataSet source, ElasticSerializableRowRecordList target)
static YieldableState	yieldRows(IUDFInputDataSet source, ElasticSerializableRowRecordList target, int rowsNumber)

Methods inherited from class java.lang.Object

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

Method Detail

yieldPoints

public static YieldableState yieldPoints(org.apache.iotdb.tsfile.file.metadata.enums.TSDataType dataType,
                                         LayerPointReader source,
                                         ElasticSerializableTVList target,
                                         int pointNumber)
                                  throws QueryProcessException,
                                         java.io.IOException

Throws:

QueryProcessException

java.io.IOException

yieldPoint

public static YieldableState yieldPoint(org.apache.iotdb.tsfile.file.metadata.enums.TSDataType dataType,
                                        LayerPointReader source,
                                        ElasticSerializableTVList target)
                                 throws java.io.IOException,
                                        QueryProcessException

Throws:

java.io.IOException

QueryProcessException

yieldRows

public static YieldableState yieldRows(IUDFInputDataSet source,
                                       ElasticSerializableRowRecordList target,
                                       int rowsNumber)
                                throws QueryProcessException,
                                       java.io.IOException

Returns:

number of actually collected, which may be less than or equals to rowsNumber

Throws:

QueryProcessException

java.io.IOException

yieldRow

public static YieldableState yieldRow(IUDFInputDataSet source,
                                      ElasticSerializableRowRecordList target)
                               throws java.io.IOException,
                                      QueryProcessException

Throws:

java.io.IOException

QueryProcessException

cachePoints

public static int cachePoints(org.apache.iotdb.tsfile.file.metadata.enums.TSDataType dataType,
                              LayerPointReader source,
                              ElasticSerializableTVList target,
                              int pointNumber)
                       throws QueryProcessException,
                              java.io.IOException

Returns:

number of actually collected, which may be less than or equals to pointNumber

Throws:

QueryProcessException

java.io.IOException

cachePoint

public static boolean cachePoint(org.apache.iotdb.tsfile.file.metadata.enums.TSDataType dataType,
                                 LayerPointReader source,
                                 ElasticSerializableTVList target)
                          throws java.io.IOException,
                                 QueryProcessException

Throws:

java.io.IOException

QueryProcessException

cacheRows

public static int cacheRows(IUDFInputDataSet source,
                            ElasticSerializableRowRecordList target,
                            int rowsNumber)
                     throws QueryProcessException,
                            java.io.IOException

Returns:

number of actually collected, which may be less than or equals to rowsNumber

Throws:

QueryProcessException

java.io.IOException

cacheRow

public static boolean cacheRow(IUDFInputDataSet source,
                               ElasticSerializableRowRecordList target)
                        throws java.io.IOException,
                               QueryProcessException

Throws:

java.io.IOException

QueryProcessException