Package uk.ac.rdg.resc.edal.dataset.cdm

Class CdmGridDatasetFactory

java.lang.Object

uk.ac.rdg.resc.edal.dataset.DatasetFactory

uk.ac.rdg.resc.edal.dataset.cdm.CdmDatasetFactory

uk.ac.rdg.resc.edal.dataset.cdm.CdmGridDatasetFactory

All Implemented Interfaces:

Serializable

public class CdmGridDatasetFactory
extends CdmDatasetFactory
implements Serializable

DatasetFactory that creates Datasets representing gridded data read through the Unidata Common Data Model. Although multiple instances of this DatasetFactory can be created, all share a common cache of NetcdfDataset objects to speed up operations where the same dataset is accessed multiple times. To avoid excess file handles being open, this is a LRU cache which closes the datasets when they expire.

Author:

Guy Griffiths, Jon Blower

See Also:

Serialized Form

Field Summary

Fields inherited from class uk.ac.rdg.resc.edal.dataset.DatasetFactory

workingDir

Constructor Summary

Constructors

Constructor	Description
CdmGridDatasetFactory()

Method Summary

Modifier and Type	Method	Description
protected DiscreteLayeredDataset<? extends DataSource,? extends DiscreteLayeredVariableMetadata>	generateDataset(String id, String location, ucar.nc2.dataset.NetcdfDataset nc)	Generate a DiscreteLayeredDataset for the given ID, location, and NetcdfDataset.

Methods inherited from class uk.ac.rdg.resc.edal.dataset.cdm.CdmDatasetFactory

createDataset, createDataset, getNetcdfDatasetFromLocation, getParameter, getVariableName

Methods inherited from class uk.ac.rdg.resc.edal.dataset.DatasetFactory

forName, setDefaultDatasetFactoryClass, setWorkingDirectory

Methods inherited from class java.lang.Object

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

Constructor Detail

CdmGridDatasetFactory

public CdmGridDatasetFactory()

Method Detail

generateDataset

protected DiscreteLayeredDataset<? extends DataSource,? extends DiscreteLayeredVariableMetadata> generateDataset(String id,
                                                                                                                       String location,
                                                                                                                       ucar.nc2.dataset.NetcdfDataset nc)
                                                                                                                throws IOException

Description copied from class: CdmDatasetFactory

Generate a DiscreteLayeredDataset for the given ID, location, and NetcdfDataset. Subclasses should use this to generate a simple DiscreteLayeredDataset - i.e. one with no additional plugins etc. All required VariablePlugins will be detected and handled by this class.

Specified by:

generateDataset in class CdmDatasetFactory

Parameters:

id - The ID of the Dataset

location - The location of the Dataset (either on disk or online)

nc - The NetcdfDataset representing the Dataset

Returns:

A DiscreteLayeredDataset

Throws:

IOException - If there is a problem reading the underlying NetcdfDataset