thredds.cataloggen.config
Class LocalDatasetSource

java.lang.Object
  thredds.cataloggen.config.DatasetSource
      thredds.cataloggen.config.LocalDatasetSource

public class LocalDatasetSource
extends DatasetSource

Concrete implementation of DatasetSource for local disk sources.

Version:

$Id: LocalDatasetSource.java 63 2006-07-12 21:50:51Z edavis $

Author:

Ethan Davis

Field Summary

Fields inherited from class thredds.cataloggen.config.DatasetSource

accessPointDataset, addDatasetSize, catalogRefInfoList, createCatalogRefs, datasetEnhancerList, datasetFilterList, datasetNamerList, datasetSorter, isValid, msgLog, resultingCatalog, type

Method Summary

protected InvDataset	createDataset(String datasetLocation, String prefixUrlPath) Creates an InvDataset to represent the dataset at the given location on this DatasetSource.
protected InvCatalog	createSkeletonCatalog(String prefixUrlPath) Build an unnamed InvCatalog for this DatasetSource and return the top-level InvDataset.
protected List	expandThisLevel(InvDataset dataset, String prefixUrlPath) Return a list of the InvDatasets contained in the given collection dataset on this DatasetSource.
protected boolean	isCollection(InvDataset dataset) Return true if the given dataset is a collection dataset, false otherwise.

Methods inherited from class thredds.cataloggen.config.DatasetSource

addDatasetEnhancer, addDatasetFilter, addDatasetNamer, equals, expand, expand, fullExpand, getAccessPoint, getCatalogRefInfoList, getDatasetEnhancerList, getDatasetFilterList, getDatasetNamerList, getDatasetSorter, getName, getPrefixUrlPath, getResultingCatalog, getResultService, getStructure, getType, hashCode, isAddDatasetSize, isCreateCatalogRefs, isFlatten, newDatasetSource, setAccessPoint, setAddDatasetSize, setCreateCatalogRefs, setDatasetSorter, setName, setPrefixUrlPath, setResultService, setStructure, toString, validate

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Method Detail

createDataset

protected InvDataset createDataset(String datasetLocation,
                                   String prefixUrlPath)
                            throws IOException

Description copied from class: DatasetSource

Creates an InvDataset to represent the dataset at the given location on this DatasetSource.

Specified by:

createDataset in class DatasetSource

Parameters:

datasetLocation - a String indicating the location of a dataset.

prefixUrlPath - a path name to be prefixed on the urlPath

Returns:

an InvDataset for the given dataset location.

Throws:

IOException - if the dataset location does not correspond to an actual dataset or is not below the accessPointHeader directory.

createSkeletonCatalog

protected InvCatalog createSkeletonCatalog(String prefixUrlPath)
                                    throws IOException

Build an unnamed InvCatalog for this DatasetSource and return the top-level InvDataset. The ResultService for this DatasetSource is used to create the InvService for the new InvCatalog. Each InvDataset in the catalog is named with the location of the object they represent on the dataset source.

Specified by:

createSkeletonCatalog in class DatasetSource

Returns:

the top-level dataset of the newly constructed InvCatalog.

Throws:

IOException - if top-level dataset does not exist or is not a collection dataset.

isCollection

protected boolean isCollection(InvDataset dataset)

Return true if the given dataset is a collection dataset, false otherwise.

Specified by:

isCollection in class DatasetSource

Parameters:

dataset - - the InvDataset to test for being a collection dataset.

Returns:

true if the given dataset is a collection dataset, false otherwise.

Throws:

NullPointerException - if the given InvDataset is null.

ClassCastException - if the given InvDataset is not a LocalInvDataset.

expandThisLevel

protected List expandThisLevel(InvDataset dataset,
                               String prefixUrlPath)

Return a list of the InvDatasets contained in the given collection dataset on this DatasetSource.

Specified by:

expandThisLevel in class DatasetSource

Parameters:

dataset - - the collection dataset to be expanded.

Returns:

A list of the InvDatasets contained in the given collection dataset.

Throws:

IllegalArgumentException - when given dataset is not a collection dataset.

NullPointerException - if given dataset is null.

ClassCastException - if the given InvDataset is not a LocalInvDataset.