com.luciad.format.dafift.decoder

Aviation StandardsClass TLcdDAFIFTILSDecoder

java.lang.Object

com.luciad.format.dafift.decoder.ALcdDAFIFTModelDecoder

com.luciad.format.dafift.decoder.TLcdDAFIFTILSDecoder

All Implemented Interfaces:

ILcdInputStreamFactoryCapable, ILcdModelDecoder

Direct Known Subclasses:

TLcdDAFIFTIndependentILSDecoder

public class TLcdDAFIFTILSDecoder
extends ALcdDAFIFTModelDecoder

Implementation of ILcdModelDecoder that decodes DAFIFT ILS components (DMEs, glide paths, localizers and markers) from the specified source directory. The decoded models have as model descriptor an instance of TLcdDAFIFILSModelListDescriptor.

The objects in decoded models are based on the AIS domain objects available in com.luciad.ais.model, which all implement ILcdDataObject. This interface provides a generic and format-independent way of accessing the type and properties (features) of a domain object.

For this handler, the types of the decoded objects are TLcdDAFIFTDataTypes.ILSDME, TLcdDAFIFTDataTypes.GlidePath, TLcdDAFIFTDataTypes.Localizer and TLcdDAFIFTDataTypes.Marker. which can also be retrieved through ILcdDataObject.getDataType(). The available properties of the objects are defined in TLcdDAFIFTILSDMEDataProperties, TLcdDAFIFTGlidePathDataProperties, TLcdDAFIFTLocalizerDataProperties and TLcdDAFIFTMarkerDataProperties. The values for these properties can be retrieved through ILcdDataObject.getValue(com.luciad.datamodel.TLcdDataProperty).

Next to ILcdDataObject, the objects in decoded models also implement ILcdFeatured, the former interface to access the properties (features) of a domain object. This is still fully supported, and explained in the following comments.

The methods setDMEFeaturesToBeDecoded, setGlidePathFeaturesToBeDecoded, setLocalizerFeaturesToBeDecoded and setMarkerFeaturesToBeDecoded allow the user to specify which DAFIFT features are to be decoded into the featured model objects. If no features are specified, all features will be decoded.

The following fields (which are taken from the National Imagery and Mapping Agency (NIMA) Product Specifications for Digital Aeronautical Flight Information File (DAFIF), Eight Edition, January 2005) are supported by the decoder. The list indicates into which feature the fields are decoded.

• AIRPORT IDENTIFICATION: ILcdDAFIFDMEFeature.AIRPORT_ID, ILcdDAFIFGlidePathFeature.AIRPORT_ID, ILcdDAFIFLocalizerFeature.AIRPORT_ID, ILcdDAFIFMarkerFeature.AIRPORT_ID
• RUNWAY IDENTIFIER: ILcdDAFIFDMEFeature.RUNWAY_ID, ILcdDAFIFGlidePathFeature.RUNWAY_ID, ILcdDAFIFLocalizerFeature.RUNWAY_ID, ILcdDAFIFMarkerFeature.RUNWAY_ID
• COMPONENT TYPE: ILcdDAFIFDMEFeature.COMPONENT_TYPE, ILcdDAFIFGlidePathFeature.COMPONENT_TYPE, ILcdDAFIFLocalizerFeature.COMPONENT_TYPE, ILcdDAFIFMarkerFeature.COMPONENT_TYPE, ILcdMarkerFeature.MARKER_TYPE
• COLLOCATION: ILcdDAFIFDMEFeature.COLLOCATION, ILcdDAFIFGlidePathFeature.COLLOCATION, ILcdDAFIFLocalizerFeature.COLLOCATION, ILcdDAFIFMarkerFeature.COLLOCATION
• NAME: ILcdNavaidFeature.NAME, ILcdDAFIFGlidePathFeature.NAME, ILcdDAFIFLocalizerFeature.NAME, ILcdDAFIFMarkerFeature.NAME
• FREQUENCY: ILcdDAFIFDMEFeature.FREQUENCY, ILcdDAFIFDMEFeature.FREQUENCY_UNIT, ILcdGlidePathFeature.FREQUENCY, ILcdGlidePathFeature.FREQUENCY_UNIT, ILcdLocalizerFeature.FREQUENCY, ILcdLocalizerFeature.FREQUENCY_UNIT, ILcdMarkerFeature.FREQUENCY, ILcdMarkerFeature.FREQUENCY_UNIT
• CHANNEL: ILcdDAFIFDMEFeature.CHANNEL
• GLIDE SLOPE ANGLE: ILcdGlidePathFeature.GLIDE_PATH_ANGLE
• LOCALIZER OR GLIDE SLOPELOCATION: ILcdDAFIFGlidePathFeature.LOCATION, ILcdDAFIFLocalizerFeature.LOCATION
• LOCATOR OR MARKER LOCATION: ILcdDAFIFMarkerFeature.LOCATION
• ILS/MLS CATEGORY: ILcdDAFIFLocalizerFeature.ILS_MLS_CATEGORY
• IDENTIFIER: ILcdNavaidFeature.IDENTIFIER, ILcdDAFIFGlidePathFeature.NAVAID_IDENTIFIER, ILcdDAFIFLocalizerFeature.NAVAID_IDENTIFIER, ILcdDAFIFMarkerFeature.NAVAID_IDENTIFIER
• NAVAID TYPE: ILcdDAFIFNavaidFeature.TYPE, ILcdDAFIFGlidePathFeature.NAVAID_TYPE, ILcdDAFIFLocalizerFeature.NAVAID_TYPE, ILcdDAFIFMarkerFeature.NAVAID_TYPE
• NAVAID COUNTRY CODE: ILcdDAFIFNavaidFeature.COUNTRY_CODE, ILcdDAFIFGlidePathFeature.NAVAID_COUNTRY_CODE, ILcdDAFIFLocalizerFeature.NAVAID_COUNTRY_CODE, ILcdDAFIFMarkerFeature.NAVAID_COUNTRY_CODE
• NAVAID KEY CODE: ILcdDAFIFNavaidFeature.KEY_CODE, ILcdDAFIFGlidePathFeature.NAVAID_KEY_CODE, ILcdDAFIFLocalizerFeature.NAVAID_KEY_CODE, ILcdDAFIFMarkerFeature.NAVAID_KEY_CODE
• MAGNETIC VARIATION: ILcdDAFIFNavaidFeature.MAGNETIC_VARIATION, ILcdDAFIFGlidePathFeature.MAGNETIC_VARIATION, ILcdDAFIFLocalizerFeature.MAGNETIC_VARIATION, ILcdDAFIFMarkerFeature.MAGNETIC_VARIATION
• ILS BEARING COURSE: ILcdDAFIFLocalizerFeature.ILS_BEARING, ILcdDAFIFLocalizerFeature.ILS_BEARING_TYPE
• LOCALIZER WIDTH: ILcdLocalizerFeature.WIDTH
• THRESHOLD CROSSING HEIGHT: ILcdDAFIFGlidePathFeature.THRESHOLD_CROSSING_HEIGTH
• ILS DME BIAS: ILcdDAFIFDMEFeature.ILS_DME_BIAS, ILcdDAFIFDMEFeature.ILS_DME_BIAS_UNIT
• CYCLE DATE: ILcdDAFIFNavaidFeature.CYCLE_DATE, ILcdDAFIFGlidePathFeature.CYCLE_DATE, ILcdDAFIFLocalizerFeature.CYCLE_DATE, ILcdDAFIFMarkerFeature.CYCLE_DATE

All DAFIFT decoders rely on a specific set of key features that uniquely define an object. This set of features must always be included in the set of features to be decoded. For DMEs, the key features are:

• ILcdDAFIFDMEFeature.AIRPORT_ID
• ILcdDAFIFDMEFeature.RUNWAY_ID
• ILcdDAFIFDMEFeature.COMPONENT_TYPE

For glide paths, the key features are:

• ILcdDAFIFGlidePathFeature.AIRPORT_ID
• ILcdDAFIFGlidePathFeature.RUNWAY_ID
• ILcdDAFIFGlidePathFeature.COMPONENT_TYPE

For localizers, the key features are:

• ILcdDAFIFLocalizerFeature.AIRPORT_ID
• ILcdDAFIFLocalizerFeature.RUNWAY_ID
• ILcdDAFIFLocalizerFeature.COMPONENT_TYPE

For markers the key features are:

• ILcdDAFIFMarkerFeature.AIRPORT_ID
• ILcdDAFIFMarkerFeature.RUNWAY_ID
• ILcdDAFIFMarkerFeature.COMPONENT_TYPE

Since:

7.2

See Also:

ILcdDAFIFDMEFeature, ILcdDAFIFGlidePathFeature, ILcdDAFIFLocalizerFeature, ILcdDAFIFMarkerFeature, TLcdDAFIFILSModelListDescriptor

Constructor Summary

Constructors

Constructor and Description
TLcdDAFIFTILSDecoder(ALcdAISObjectFactory aDomainFactory) Deprecated.
TLcdDAFIFTILSDecoder(TLcdAISDataObjectFactory aFactory) Constructs a new TLcdDAFIFTILSDecoder object.

Method Summary

Modifier and Type	Method and Description
boolean	canDecodeSource(String aSource) Returns true if the specified source is: A file with the specific name corresponding to the object type of this decoder A directory containing such a file A .toc file in a directory, pointing to such a file
ILcdModel	decode(String aSource) Checks whether a runway model is set before starting the decode process.
TLcdAISDataObjectFactory	getDataObjectFactory() Returns the factory that is used to create domain objects.
String	getDisplayName() Returns a short, displayable name for the format that is decoded by this ILcdModelDecoder.
ALcdAISObjectFactory	getDomainFactory() Deprecated. Use getDataObjectFactory()
String	getErrorMessage() Returns the error message of the last decode call.
ILcdInputStreamFactory	getInputStreamFactory() Returns the input stream factory that is currently used for creating the input streams for the given source names.
int	getMaxNumberOfErrorReports() Returns the number of error reports to be added to the error message.
ILcdDAFIFTRecordFilter	getRecordFilter() Returns the record filter that is currently used.
String[]	getUniqueKeyFeatureNames(int aIndex) Returns for the given submodel the array of String objects containing the names of the features that will be used as a unique key to insert objects into the submodel.
void	setDataObjectFactory(TLcdAISDataObjectFactory aFactory) Specifies the data factory.
void	setDMEDefaultDisplayNameIndex(int aIndex) Specifies the index of the feature to be the DME display name.
void	setDMEFeaturesToBeDecoded(String[] aFeaturesToBeDecoded) Specifies the DME features to be decoded into the model objects.
void	setDomainFactory(ALcdAISObjectFactory aDomainFactory) Deprecated. Use setDataObjectFactory(TLcdAISDataObjectFactory)
void	setGlidePathDefaultDisplayNameIndex(int aIndex) Specifies the index of the feature to be the glide path display name.
void	setGlidePathFeaturesToBeDecoded(String[] aFeaturesToBeDecoded) Specifies the glide path features to be decoded into the model objects.
void	setInputStreamFactory(ILcdInputStreamFactory aInputStreamFactory) Sets the input stream factory that will be used for creating the input streams for the given source names.
void	setLocalizerDefaultDisplayNameIndex(int aIndex) Specifies the index of the feature to be the localizer display name.
void	setLocalizerFeaturesToBeDecoded(String[] aFeaturesToBeDecoded) Specifies the localizer features to be decoded into the model objects.
void	setMarkerDefaultDisplayNameIndex(int aIndex) Specifies the index of the feature to be the marker display name.
void	setMarkerFeaturesToBeDecoded(String[] aFeaturesToBeDecoded) Specifies the marker features to be decoded into the model objects.
void	setMaxNumberOfErrorReports(int aMaxNumberOfErrorReports) Specifies a value for the maximum number of error reports.
void	setRecordFilter(ILcdDAFIFTRecordFilter aRecordFilter) Specifies a filter to be used while creating the model.
void	setRunwayModel(ILcdFeatureIndexedModel aRunwayModel) Specifies the model containing the runway objects this decoder should use.

Methods inherited from class com.luciad.format.dafift.decoder.ALcdDAFIFTModelDecoder

getDecodingBounds, getModelFilter, setDecodingBounds, setModelFilter

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.luciad.model.ILcdModelDecoder

canDecodeSource, canDecodeSource, decodeModelMetadata, decodeModelMetadata, decodeSource, discoverDataSources

Constructor Detail

TLcdDAFIFTILSDecoder

@Deprecated
public TLcdDAFIFTILSDecoder(ALcdAISObjectFactory aDomainFactory)

Deprecated.

Constructs a new TLcdDAFIFTILSDecoder object. The user should specify which aDomainFactory he or she wants to use to create the ILS objects.

Parameters:

aDomainFactory - The factory to be used to create the model objects.

TLcdDAFIFTILSDecoder

public TLcdDAFIFTILSDecoder(TLcdAISDataObjectFactory aFactory)

Constructs a new TLcdDAFIFTILSDecoder object. The user should specify which factory he or she wants to use to create the ILS objects.

Parameters:

aFactory - The factory to be used to create the model objects.

Method Detail

getDisplayName

public String getDisplayName()

Description copied from interface: ILcdModelDecoder

Returns a short, displayable name for the format that is decoded by this ILcdModelDecoder.

Specified by:

getDisplayName in interface ILcdModelDecoder

Overrides:

getDisplayName in class ALcdDAFIFTModelDecoder

Returns:

the displayable name of this ILcdModelDecoder.

decode

public ILcdModel decode(String aSource)
                 throws IOException

Checks whether a runway model is set before starting the decode process. If no runway model is specified, an IllegalStateException object will be thrown.

Returns a model list containing one or more submodels. Each submodel contains domain objects of the same type.

The models will be build by looping through the records found in the source file. Each record that passes the record filter (getRecordFilter()) will be decoded. A decoded record needs to pass two additional filters (a model filter getModelFilter() and a bounds filter getDecodingBounds()) before it can be added to the model.

Furthermore, an error message will be initialized and filled with reports about errors occurred during the decode process. By default, all reports will be added into the error message. The method setMaxNumberOfErrorReports(int) can be used to adjust this setting.

Specified by:

decode in interface ILcdModelDecoder

Parameters:

aSource - Either the directory containing the DAFIFT source file to decode or the DAFIFT source file itself.

Returns:

the model build by reading the file found with the given source.

Throws:

IOException - if an error occurs during the reading process.

IllegalStateException - if no runway model has been specified.

See Also:

ILcdModelDecoder.canDecodeSource(String)

setGlidePathDefaultDisplayNameIndex

public void setGlidePathDefaultDisplayNameIndex(int aIndex)

Specifies the index of the feature to be the glide path display name.

Parameters:

aIndex - The index of the feature to be the glide path display name.

setLocalizerDefaultDisplayNameIndex

public void setLocalizerDefaultDisplayNameIndex(int aIndex)

Specifies the index of the feature to be the localizer display name.

Parameters:

aIndex - The index of the feature to be the localizer display name.

setMarkerDefaultDisplayNameIndex

public void setMarkerDefaultDisplayNameIndex(int aIndex)

Specifies the index of the feature to be the marker display name.

Parameters:

aIndex - The index of the feature to be the marker display name.

setDMEDefaultDisplayNameIndex

public void setDMEDefaultDisplayNameIndex(int aIndex)

Specifies the index of the feature to be the DME display name.

Parameters:

aIndex - The index of the feature to be the DME display name.

setGlidePathFeaturesToBeDecoded

public void setGlidePathFeaturesToBeDecoded(String[] aFeaturesToBeDecoded)

Specifies the glide path features to be decoded into the model objects.

Please make sure that the AIRPORT_ID, RUNWAY_ID and COMPONENT_TYPE features are in your list of features to be decoded!

Parameters:

aFeaturesToBeDecoded - A list of features that should be decoded into the glide path model objects.

setLocalizerFeaturesToBeDecoded

public void setLocalizerFeaturesToBeDecoded(String[] aFeaturesToBeDecoded)

Specifies the localizer features to be decoded into the model objects.

Please make sure that the AIRPORT_ID, RUNWAY_ID and COMPONENT_TYPE features are in your list of features to be decoded!

Parameters:

aFeaturesToBeDecoded - A list of features that should be decoded into the localizer model objects.

setMarkerFeaturesToBeDecoded

public void setMarkerFeaturesToBeDecoded(String[] aFeaturesToBeDecoded)

Specifies the marker features to be decoded into the model objects.

Please make sure that the AIRPORT_ID, RUNWAY_ID and COMPONENT_TYPE features are in your list of features to be decoded!

Parameters:

aFeaturesToBeDecoded - A list of features that should be decoded into the marker model objects.

setDMEFeaturesToBeDecoded

public void setDMEFeaturesToBeDecoded(String[] aFeaturesToBeDecoded)

Specifies the DME features to be decoded into the model objects.

Please make sure that the AIRPORT_ID, RUNWAY_ID and COMPONENT_TYPE features are in your list of features to be decoded!

Parameters:

aFeaturesToBeDecoded - A list of features that should be decoded into the DME model objects.

setRunwayModel

public void setRunwayModel(ILcdFeatureIndexedModel aRunwayModel)

Specifies the model containing the runway objects this decoder should use.

Parameters:

aRunwayModel - A model containing runway objects.

getUniqueKeyFeatureNames

public String[] getUniqueKeyFeatureNames(int aIndex)

Returns for the given submodel the array of String objects containing the names of the features that will be used as a unique key to insert objects into the submodel.

Parameters:

aIndex - The index of the submodel whose unique key feature names are being retrieved.

Returns:

for the given submodel the unique key feature names.

canDecodeSource

public boolean canDecodeSource(String aSource)

Returns true if the specified source is:

• A file with the specific name corresponding to the object type of this decoder
• A directory containing such a file
• A .toc file in a directory, pointing to such a file

Parameters:

aSource - the name of the source file or directory that you want to decode

Returns:

a boolean indicating whether the given source can be decoded

getDomainFactory

@Deprecated
public ALcdAISObjectFactory getDomainFactory()

Deprecated. Use getDataObjectFactory()

Returns the factory that is used to create domain objects.

Returns:

the factory that is used to create domain objects.

See Also:

setDomainFactory(ALcdAISObjectFactory)

setDomainFactory

@Deprecated
public void setDomainFactory(ALcdAISObjectFactory aDomainFactory)

Deprecated. Use setDataObjectFactory(TLcdAISDataObjectFactory)

Specifies the domain factory.

The domain factory will be used to create the domain objects decoded by this DAFIFT decoder.

Parameters:

aDomainFactory - The factory that will be used to create domain objects.

See Also:

getDomainFactory()

getDataObjectFactory

public TLcdAISDataObjectFactory getDataObjectFactory()

Returns the factory that is used to create domain objects.

Returns:

the factory that is used to create domain objects.

See Also:

setDomainFactory(ALcdAISObjectFactory)

setDataObjectFactory

public void setDataObjectFactory(TLcdAISDataObjectFactory aFactory)

Specifies the data factory.

The data factory will be used to create the domain objects decoded by this DAFIFT decoder.

Decoders equipped with a data object factory that is not null, will NOT use their associated domain factory (see getDomainFactory()).

Parameters:

aFactory - The factory that will be used to create domain objects.

See Also:

getDomainFactory()

getInputStreamFactory

public ILcdInputStreamFactory getInputStreamFactory()

Returns the input stream factory that is currently used for creating the input streams for the given source names.

Specified by:

getInputStreamFactory in interface ILcdInputStreamFactoryCapable

Returns:

the input stream factory that is currently used.

See Also:

setInputStreamFactory(ILcdInputStreamFactory)

setInputStreamFactory

public void setInputStreamFactory(ILcdInputStreamFactory aInputStreamFactory)

Sets the input stream factory that will be used for creating the input streams for the given source names.

Specified by:

setInputStreamFactory in interface ILcdInputStreamFactoryCapable

Parameters:

aInputStreamFactory - The input stream factory to be used.

See Also:

getInputStreamFactory()

getRecordFilter

public ILcdDAFIFTRecordFilter getRecordFilter()

Returns the record filter that is currently used.

Returns:

the record filter that is currently used.

See Also:

setRecordFilter(ILcdDAFIFTRecordFilter)

setRecordFilter

public void setRecordFilter(ILcdDAFIFTRecordFilter aRecordFilter)

Specifies a filter to be used while creating the model. Only records that pass through this filter will be decoded into model objects.

Parameters:

aRecordFilter - The record filter that should be passed before a record can be decoded.

See Also:

getRecordFilter()

getMaxNumberOfErrorReports

public int getMaxNumberOfErrorReports()

Returns the number of error reports to be added to the error message. If there are more errors than the maxNumberOfErrorReports property, they won't be stored and you won't be able to see these errors in the error message after the decoding process.

Returns:

the number of error reports to be added to the error message.

See Also:

setMaxNumberOfErrorReports(int)

setMaxNumberOfErrorReports

public void setMaxNumberOfErrorReports(int aMaxNumberOfErrorReports)

Specifies a value for the maximum number of error reports. If a negative value is set, all reported errors will be added to the error message.

Parameters:

aMaxNumberOfErrorReports - The maximum number of error reports to be added to the error message.

See Also:

getMaxNumberOfErrorReports()

getErrorMessage

public String getErrorMessage()

Returns the error message of the last decode call.

Note that the error message can only be retrieved once after a decode call.

Returns:

a String object containing the errors occurred during the last decode process.