ucar.nc2.ft
Class FeatureDatasetImpl

java.lang.Object
  ucar.nc2.ft.FeatureDatasetImpl

All Implemented Interfaces:

FeatureDataset, FileCacheable

Direct Known Subclasses:

PointDatasetImpl

public abstract class FeatureDatasetImpl
extends Object
implements FeatureDataset

Abstract superclass for implementations of FeatureDataset. Subclass must implement getFeatureClass(), and add specific functionality.

Since:

Sep 7, 2007

Author:

caron

Field Summary

protected LatLonRect	boundingBox
protected List<VariableSimpleIF>	dataVariables
protected DateRange	dateRange
protected String	desc
protected FileCache	fileCache
protected String	location
protected NetcdfDataset	ncfile
protected Formatter	parseInfo
protected String	title

Constructor Summary

	FeatureDatasetImpl() No-arg constuctor
protected	FeatureDatasetImpl(FeatureDatasetImpl from)
	FeatureDatasetImpl(NetcdfDataset ncfile) Constructor when theres a NetcdfFile underneath
	FeatureDatasetImpl(String title, String description, String location) Constructor when theres no NetcdfFile underneath.

Method Summary

void	close() Close all resources associated with this dataset.
Attribute	findGlobalAttributeIgnoreCase(String name) Return the global attribute with the given name, ignoring case.
LatLonRect	getBoundingBox() The boundingBox for the entire dataset.
VariableSimpleIF	getDataVariable(String shortName) Get the named data Variable.
List<VariableSimpleIF>	getDataVariables() The data Variables available in this dataset.
DateRange	getDateRange() Date range for the entire dataset.
String	getDescription() Text information about this dataset.
void	getDetailInfo(Formatter sf) Show debug / underlying implementation details
Date	getEndDate() Ending date for the entire dataset.
List<Attribute>	getGlobalAttributes() List of global attributes.
String	getImplementationName() Show who is implementing
String	getLocation() The URI location of the dataset
NetcdfFile	getNetcdfFile() Return underlying NetcdfFile, or null if none.
Date	getStartDate() Starting date for the entire dataset.
String	getTitle() Title of the dataset.
protected void	removeDataVariable(String varName)
protected void	setBoundingBox(LatLonRect boundingBox)
protected void	setDateRange(DateRange dateRange)
protected void	setDescription(String desc)
void	setFileCache(FileCache fileCache) If the FileCache is set, the FileCacheable object must store it and call FileCache.release() on FileCacheable.close():
protected void	setLocationURI(String location)
protected void	setTitle(String title)
boolean	sync() Sync() is called when the FileCacheable is found in the cache, before returning the object to the application.

Methods inherited from class java.lang.Object

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

Methods inherited from interface ucar.nc2.ft.FeatureDataset

calcBounds, getFeatureType

Field Detail

ncfile

protected NetcdfDataset ncfile

title

protected String title

desc

protected String desc

location

protected String location

dataVariables

protected List<VariableSimpleIF> dataVariables

parseInfo

protected Formatter parseInfo

dateRange

protected DateRange dateRange

boundingBox

protected LatLonRect boundingBox

fileCache

protected FileCache fileCache

Constructor Detail

FeatureDatasetImpl

protected FeatureDatasetImpl(FeatureDatasetImpl from)

FeatureDatasetImpl

public FeatureDatasetImpl()

No-arg constuctor

FeatureDatasetImpl

public FeatureDatasetImpl(String title,
                          String description,
                          String location)

Constructor when theres no NetcdfFile underneath.

Parameters:

title - title of the dataset.

description - description of the dataset.

location - URI of the dataset

FeatureDatasetImpl

public FeatureDatasetImpl(NetcdfDataset ncfile)

Constructor when theres a NetcdfFile underneath

Parameters:

ncfile - adapt this NetcdfDataset

Method Detail

setTitle

protected void setTitle(String title)

setDescription

protected void setDescription(String desc)

setLocationURI

protected void setLocationURI(String location)

setDateRange

protected void setDateRange(DateRange dateRange)

setBoundingBox

protected void setBoundingBox(LatLonRect boundingBox)

removeDataVariable

protected void removeDataVariable(String varName)

getNetcdfFile

public NetcdfFile getNetcdfFile()

Description copied from interface: FeatureDataset

Return underlying NetcdfFile, or null if none.

Specified by:

getNetcdfFile in interface FeatureDataset

Returns:

the underlying NetcdfFile, or null if none.

getTitle

public String getTitle()

Description copied from interface: FeatureDataset

Title of the dataset.

Specified by:

getTitle in interface FeatureDataset

Returns:

the title of the dataset, or null

getDescription

public String getDescription()

Description copied from interface: FeatureDataset

Text information about this dataset.

Specified by:

getDescription in interface FeatureDataset

Returns:

any text information about this dataset, or null.

getLocation

public String getLocation()

Description copied from interface: FeatureDataset

The URI location of the dataset

Specified by:

getLocation in interface FeatureDataset

Specified by:

getLocation in interface FileCacheable

Returns:

the URI location of the dataset, or null

getGlobalAttributes

public List<Attribute> getGlobalAttributes()

Description copied from interface: FeatureDataset

List of global attributes.

Specified by:

getGlobalAttributes in interface FeatureDataset

Returns:

List of type ucar.nc2.Attribute, may be empty but not null

findGlobalAttributeIgnoreCase

public Attribute findGlobalAttributeIgnoreCase(String name)

Description copied from interface: FeatureDataset

Return the global attribute with the given name, ignoring case.

Specified by:

findGlobalAttributeIgnoreCase in interface FeatureDataset

Parameters:

name - attribute name

Returns:

the global attribute, or null

getDetailInfo

public void getDetailInfo(Formatter sf)

Description copied from interface: FeatureDataset

Show debug / underlying implementation details

Specified by:

getDetailInfo in interface FeatureDataset

Parameters:

sf - append info here

getDateRange

public DateRange getDateRange()

Description copied from interface: FeatureDataset

Date range for the entire dataset.

Specified by:

getDateRange in interface FeatureDataset

Returns:

the date range for the entire dataset, or null if unknown

getStartDate

public Date getStartDate()

Description copied from interface: FeatureDataset

Starting date for the entire dataset.

Specified by:

getStartDate in interface FeatureDataset

Returns:

the starting date for the entire dataset, or null if unknown

getEndDate

public Date getEndDate()

Description copied from interface: FeatureDataset

Ending date for the entire dataset.

Specified by:

getEndDate in interface FeatureDataset

Returns:

the ending date for the entire dataset, or null if unknown

getBoundingBox

public LatLonRect getBoundingBox()

Description copied from interface: FeatureDataset

The boundingBox for the entire dataset.

Specified by:

getBoundingBox in interface FeatureDataset

Returns:

the lat/lon boundingBox for the entire dataset, or null if unknown.

getDataVariables

public List<VariableSimpleIF> getDataVariables()

Description copied from interface: FeatureDataset

The data Variables available in this dataset. Should just be data variables others might be searching for, not metadata or coordinate system variables, etc. The shapes of the VariableSimpleIF do not necessarily match the StructureData member.

Specified by:

getDataVariables in interface FeatureDataset

Returns:

List of subclass of VariableSimpleIF, may be empty but not null

getDataVariable

public VariableSimpleIF getDataVariable(String shortName)

Description copied from interface: FeatureDataset

Get the named data Variable.

Specified by:

getDataVariable in interface FeatureDataset

Parameters:

shortName - of data Variable.

Returns:

VariableSimpleIF or null if not found

getImplementationName

public String getImplementationName()

Description copied from interface: FeatureDataset

Show who is implementing

Specified by:

getImplementationName in interface FeatureDataset

Returns:

name of implementor

close

public void close()
           throws IOException

Description copied from interface: FeatureDataset

Close all resources associated with this dataset.

Specified by:

close in interface FeatureDataset

Specified by:

close in interface FileCacheable

Throws:

IOException

sync

public boolean sync()
             throws IOException

Description copied from interface: FileCacheable

Sync() is called when the FileCacheable is found in the cache, before returning the object to the application. FileCacheable has an opportunity to freshen itself. FileCacheable mag ignore this call.

Specified by:

sync in interface FileCacheable

Returns:

true if FileCacheable was changed

Throws:

IOException - on i/o error.

setFileCache

public void setFileCache(FileCache fileCache)

Description copied from interface: FileCacheable

If the FileCache is set, the FileCacheable object must store it and call FileCache.release() on FileCacheable.close():

  public synchronized void close() throws java.io.IOException {
    if (isClosed) return;
    if (cache != null) {
      cache.release(this);
    } else {
      reallyClose();
    }
    isClosed = true;
   

Specified by:

setFileCache in interface FileCacheable

Parameters:

fileCache - must store this, use it on close as above.