ucar.nc2.ncml
Class AggregationUnion

java.lang.Object
  ucar.nc2.ncml.Aggregation
      ucar.nc2.ncml.AggregationUnion

All Implemented Interfaces:

ProxyReader

public class AggregationUnion
extends Aggregation

Aggregation on datasets to be simply combined - aka "union". The variables are transferred from the component files to the

Author:

caron

Nested Class Summary

Nested classes/interfaces inherited from class ucar.nc2.ncml.Aggregation

Aggregation.DatasetProxyReader, Aggregation.Type, Aggregation.TypicalDataset

Field Summary

Fields inherited from class ucar.nc2.ncml.Aggregation

cacheDirty, datasetManager, datasets, dateFormatMark, debug, debugDateParse, debugOpenFile, debugProxy, debugRead, debugSyncDetail, dimName, diskCache2, enhance, executor, explicitDatasets, formatter, isDate, logger, ncDataset, spiObject, timeUnitsChange, type, typicalDatasetMode

Constructor Summary

AggregationUnion(NetcdfDataset ncd, java.lang.String dimName, java.lang.String recheckS)

Method Summary

protected void	buildDataset(CancelTask cancelTask) Call this to build the dataset objects
protected void	closeDatasets()
Array	read(Variable mainv, CancelTask cancelTask) Read an aggregation variable: A variable whose data spans multiple files.
Array	read(Variable mainv, Section section, CancelTask cancelTask) Read a section of an aggregation variable.
protected void	rebuildDataset() Call this when rescan has found changed datasets

Methods inherited from class ucar.nc2.ncml.Aggregation

addDataset, addDatasetScan, addExplicitDataset, close, findVariable, finish, getDatasets, getDimensionName, getLocation, getType, getTypicalDataset, makeDataset, makeDatasets, persistRead, persistWrite, setDatasetAcquireProxy, setExecutor, setPersistenceCache, setTypicalDatasetMode, sync, syncExtend

Methods inherited from class java.lang.Object

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

Constructor Detail

AggregationUnion

public AggregationUnion(NetcdfDataset ncd,
                        java.lang.String dimName,
                        java.lang.String recheckS)

Method Detail

buildDataset

protected void buildDataset(CancelTask cancelTask)
                     throws java.io.IOException

Description copied from class: Aggregation

Call this to build the dataset objects

Specified by:

buildDataset in class Aggregation

Parameters:

cancelTask - maybe cancel

Throws:

java.io.IOException - on read error

rebuildDataset

protected void rebuildDataset()
                       throws java.io.IOException

Description copied from class: Aggregation

Call this when rescan has found changed datasets

Specified by:

rebuildDataset in class Aggregation

Throws:

java.io.IOException - on read error

read

public Array read(Variable mainv,
                  CancelTask cancelTask)
           throws java.io.IOException

Description copied from class: Aggregation

Read an aggregation variable: A variable whose data spans multiple files.

Specified by:

read in interface ProxyReader

Specified by:

read in class Aggregation

Parameters:

mainv - the aggregation variable

cancelTask - allow the user to cancel

Returns:

the data array

Throws:

java.io.IOException - on error

read

public Array read(Variable mainv,
                  Section section,
                  CancelTask cancelTask)
           throws java.io.IOException,
                  InvalidRangeException

Description copied from class: Aggregation

Read a section of an aggregation variable.

Specified by:

read in interface ProxyReader

Specified by:

read in class Aggregation

Parameters:

mainv - the aggregation variable

section - read just this section of the data, refers to aggregated Variable's section.

cancelTask - allow the user to cancel

Returns:

the data array section

Throws:

java.io.IOException - on error

InvalidRangeException - if section has incorrect rank or shape.

closeDatasets

protected void closeDatasets()
                      throws java.io.IOException

Overrides:

closeDatasets in class Aggregation

Throws:

java.io.IOException