com.bbn.openmap.layer.vpf
Class CoverageAttributeTable

java.lang.Object
  com.bbn.openmap.layer.vpf.CoverageAttributeTable

public class CoverageAttributeTable
extends java.lang.Object

Handle the library level VPF directory. "noamer" in DCW is an example of the library level data. This class loads the associated tiling information, and the coverage types, and make them available to the client.

Nested Class Summary

static class

CoverageAttributeTable.CoverageEntry A utility class to hold information about one coverage type.

Field Summary

protected DataBounds	bounds
protected java.lang.String	dirpath the path to our directory
protected java.lang.String	libraryname the name of the library we are, for example "noamer" in DCW

Constructor Summary

CoverageAttributeTable(java.lang.String dcwpath, java.lang.String libname)
Construct a new coverage attribute table

Method Summary

DataBounds	getBounds() Gets a DataBounds object that specifies what the CAT covers.
java.lang.String	getCoverageDescription(java.lang.String covname) Get the description of a coverage type
java.lang.String[]	getCoverageNames() Return the list of coverages this library has
CoverageTable	getCoverageTable(java.lang.String covname) Get the CoverageTable for a particular coverage type
CoverageTable	getCoverageTableForFeature(java.lang.String featureName)
int	getCoverageTopologyLevel(java.lang.String covname) Get the topology level of a coverage.
java.lang.String	getLibraryName() the name of the library
TileDirectory	getTileWithID(int id) Get the TileDirectory with the given ID number.
TileDirectory	getTileWithID(java.lang.String id) Know that the tile id are the integers used in the tileref.aft file.
boolean	isTiledCoverage() is this library tiled
boolean	isTiledData() Find out if this library uses tiled data
java.util.List<TileDirectory>	tilesInRegion(float n, float s, float e, float w) get a list of tiles in the bounding region

Methods inherited from class java.lang.Object

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

Field Detail

libraryname

protected final java.lang.String libraryname

the name of the library we are, for example "noamer" in DCW

dirpath

protected final java.lang.String dirpath

the path to our directory

bounds

protected DataBounds bounds

Constructor Detail

CoverageAttributeTable

public CoverageAttributeTable(java.lang.String dcwpath,
                              java.lang.String libname)
                       throws FormatException

Construct a new coverage attribute table

Parameters:

libname - the name of the library

dcwpath - the path to the library

Throws:

FormatException - may throw FormatExceptions

Method Detail

isTiledCoverage

public final boolean isTiledCoverage()

is this library tiled

Returns:

true for tiled coverage. false else

getLibraryName

public java.lang.String getLibraryName()

the name of the library

Returns:

the name of the library

getCoverageDescription

public java.lang.String getCoverageDescription(java.lang.String covname)

Get the description of a coverage type

Parameters:

covname - the name of the coverage type

Returns:

the coverage description from the VPF database. A null return value indicates an unknown coverage type

getCoverageTopologyLevel

public int getCoverageTopologyLevel(java.lang.String covname)

Get the topology level of a coverage.

Parameters:

covname - the name of the coverage type

Returns:

the topology level of the coverage (-1 if not a valid coverage)

getCoverageTable

public CoverageTable getCoverageTable(java.lang.String covname)

Get the CoverageTable for a particular coverage type

Parameters:

covname - the name of the coverage type

Returns:

the associated coverage table (possibly null)

getCoverageTableForFeature

public CoverageTable getCoverageTableForFeature(java.lang.String featureName)

tilesInRegion

public java.util.List<TileDirectory> tilesInRegion(float n,
                                                   float s,
                                                   float e,
                                                   float w)

get a list of tiles in the bounding region

Parameters:

n - northern boundary

s - southern boundary

e - eating foundry

w - wheat bread

Returns:

a vector of TileDirectories

getTileWithID

public TileDirectory getTileWithID(int id)

Get the TileDirectory with the given ID number.

getTileWithID

public TileDirectory getTileWithID(java.lang.String id)

Know that the tile id are the integers used in the tileref.aft file. May return null if the format of the id is bad, or if the tile doesn't really exist (that really shouldn't happen).

isTiledData

public boolean isTiledData()

Find out if this library uses tiled data

Returns:

true for tiled data

getCoverageNames

public java.lang.String[] getCoverageNames()

Return the list of coverages this library has

Returns:

the list of coverages (DCW would include "po", "dn"; VMAP would have "bnd", "tran", etc.)

getBounds

public DataBounds getBounds()

Gets a DataBounds object that specifies what the CAT covers.

Returns:

DataBounds