TLcdCompositeModelDecoder (LuciadLightspeed API documentation)

java.lang.Object
- com.luciad.model.TLcdCompositeModelDecoder

All Implemented Interfaces:

ILcdInputStreamFactoryCapable, ~~ILcdDataSourceModelDecoder~~ , ILcdModelDecoder
```
public class TLcdCompositeModelDecoder
extends Object
implements ILcdModelDecoder, 
ILcdDataSourceModelDecoder
, ILcdInputStreamFactoryCapable
```
Composite implementation of ILcdModelDecoder.
Any number of model decoders can be added to this composite.
The decode(java.lang.String) delegates, in order, to the decoders in the list who can decode the source. See decode(String) for details.
Example usage:
To create a composite instance which uses all default available ILcdModelDecoder instances, you can use:
```
    ILcdModelDecoder modelDecoder =
        new TLcdCompositeModelDecoder(TLcdServiceLoader.getInstance(ILcdModelDecoder.class));
```
This will use all model decoders annotated with the @LcdService annotation.
Since:

2013.0

Constructor Summary

Constructors
Constructor and Description
`TLcdCompositeModelDecoder()` Creates a new, empty composite model decoder.
`TLcdCompositeModelDecoder(ILcdModelDecoder... aModelDecoders)` Creates a new composite model decoder containing the supplied delegate decoders.
`TLcdCompositeModelDecoder(Iterable<? extends ILcdModelDecoder> aModelDecoders)` Creates a new composite model decoder that lazily uses the given Iterable to delegate to.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`boolean`	`canDecodeSource(ILcdDataSource aDataSource)` Checks whether this model decoder can decode the data source(s), identified by the passed `ILcdDataSource`.
`boolean`	`canDecodeSource(String aSourceName)` Checks whether this model decoder can decode the specified data source.
`ILcdModel`	`decode(String aSourceName)` Decode the given data source through a suitable delegate model decoder.
`TLcdModelMetadata`	`decodeModelMetadata(ILcdDataSource aDataSource)` Decodes the model metadata of the given data source through a suitable delegate model decoder.
`TLcdModelMetadata`	`decodeModelMetadata(String aSourceName)` Decodes the model metadata of the given data source through a suitable delegate model decoder.
`ILcdModel`	`decodeSource(ILcdDataSource aDataSource)` Decode the given data source through a suitable delegate model decoder.
`List<? extends ILcdDataSource>`	`discoverDataSources(String aPath)` Delegates to all decoders whose `canDecodeSource(String)` returns true for the given path.
`List<ILcdModelDecoder>`	`findModelDecoders(ILcdDataSource aDataSource)` Returns all model decoders that `can decode` the given data source
`List<ILcdModelDecoder>`	`findModelDecoders(String aSourceName)` Returns all model decoders that `can decode` the given source name
`String`	`getDisplayName()` Returns a short, displayable name for the format that is decoded by this `ILcdModelDecoder`.
`ILcdInputStreamFactory`	`getInputStreamFactory()` Returns the input stream factory that is used.
`List<ILcdModelDecoder>`	`getModelDecoders()` Returns the list of delegate model decoders contained in this composite.
`void`	`setDisplayName(String aDisplayName)` Sets the display name for this model decoder
`void`	`setInputStreamFactory(ILcdInputStreamFactory aInputStreamFactory)` If not null, overrides the input stream factory of the contained model decoders with the given factory.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - TLcdCompositeModelDecoder
```
public TLcdCompositeModelDecoder()
```
    Creates a new, empty composite model decoder. This decoder will not be able to create models until delegate model decoders are added to the model decoder list.
  - TLcdCompositeModelDecoder
```
public TLcdCompositeModelDecoder(Iterable<? extends ILcdModelDecoder> aModelDecoders)
```
    Creates a new composite model decoder that lazily uses the given Iterable to delegate to.
    
    Parameters:
    
    aModelDecoders - an Iterable of model decoders
  - TLcdCompositeModelDecoder
```
public TLcdCompositeModelDecoder(ILcdModelDecoder... aModelDecoders)
```
    Creates a new composite model decoder containing the supplied delegate decoders.
    
    Parameters:
    
    aModelDecoders - delegate decoders to be added to the composite
- Method Detail
  - getModelDecoders
```
public List<ILcdModelDecoder> getModelDecoders()
```
    Returns the list of delegate model decoders contained in this composite. If the factory does not use an Iterable, delegates can be added or removed by modifying this list.
    
    Returns:
    
    the list of delegate model decoders in this composite
  - findModelDecoders
```
public List<ILcdModelDecoder> findModelDecoders(String aSourceName)
```
    Returns all model decoders that can decode the given source name
    
    Parameters:
    
    aSourceName - the source name to return the compatible model decoders for.
    
    Returns:
    
    a list containing all decoders that can open the given source
  - findModelDecoders
```
public List<ILcdModelDecoder> findModelDecoders(ILcdDataSource aDataSource)
```
    Returns all model decoders that can decode the given data source
    
    Parameters:
    
    aDataSource - the data source to return the compatible model decoders for.
    
    Returns:
    
    a list containing all decoders that can open the given source
    
    Since:
    
    2017.0
  - 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
    
    Returns:
    
    the displayable name of this ILcdModelDecoder.
  - setDisplayName
```
public void setDisplayName(String aDisplayName)
```
    Sets the display name for this model decoder
    
    Parameters:
    
    aDisplayName - The display name
    
    See Also:
    
    getDisplayName()
  - canDecodeSource
```
public boolean canDecodeSource(String aSourceName)
```
    Description copied from interface: ILcdModelDecoder
    
    Checks whether this model decoder can decode the specified data source. It is acceptable for this method to return true for a source name while decode throws an exception for that same source name.
    For performance reasons, we strongly recommend that this will only be a simple test. For example: check the file extension of a file, but not that the file exists or contains expected content.
    
    Specified by:
    
    canDecodeSource in interface ILcdModelDecoder
    
    Parameters:
    
    aSourceName - the data source to be verified; typically a file name or a URL.
    
    Returns:
    
    true if this decoder can likely decode the data specified by the source name, false otherwise.
    
    See Also:
    
    ILcdModelDecoder.decode(String), ILcdModelDecoder.decodeModelMetadata(String)
  - decode
```
public ILcdModel decode(String aSourceName)
                 throws IOException
```
    Decode the given data source through a suitable delegate model decoder.
    Notes:
    - Tries all delegate decoders that can decode the source, in order.
    - The first successfully created non-null model is returned.
    Creates a new model from the given data source.
    Specified by:
    
    decode in interface ILcdModelDecoder
    
    Parameters:
    
    aSourceName - the source for which a model should be created
    
    Returns:
    
    a model created by the selected delegate decoder
    
    Throws:
    IOException -
    
    If a delegate model decoder returns a null value, an IOException will be thrown.
    
    If no delegate model decoder returns a non-null value, an IOException will be thrown.
    
    If one or more delegate model decoders throw an IOException and no other delegate model decoder returns a non-null value, an IOException will be thrown containing every suppressed exception.
    
    If a delegate decoder throws an InterruptedIOException, the decoding stops and that exception is re-thrown.
    See Also:
    
    ILcdModelDecoder.canDecodeSource(String)
  - canDecodeSource
```
public boolean canDecodeSource(ILcdDataSource aDataSource)
```
    Description copied from interface: ILcdModelDecoder
    
    Checks whether this model decoder can decode the data source(s), identified by the passed ILcdDataSource.
    
    For performance reasons, we strongly recommend that this will only be a simple test. For example: check the instance class of aDataSource, or check the file extension if it is a TLcdDataSource.
    
    The default implementation of this method will check if the given ILcdDataSource is a TLcdDataSource. If not, this method returns false. Otherwise, it delegates the source to the ILcdModelDecoder.canDecodeSource(String) method.
    
    Specified by:
    
    canDecodeSource in interface ILcdModelDecoder
    
    Parameters:
    
    aDataSource - the ILcdModelSource to be verified.
    
    Returns:
    
    true if this decoder can likely decode the data specified by aDataSource, false otherwise.
    
    See Also:
    
    ILcdModelDecoder.decodeSource(ILcdDataSource), ILcdModelDecoder.decodeModelMetadata(ILcdDataSource)
  - decodeSource
```
public ILcdModel decodeSource(ILcdDataSource aDataSource)
                       throws IOException
```
    Decode the given data source through a suitable delegate model decoder.
    See decode(String) for details.
    Specified by:
    
    decodeSource in interface ILcdModelDecoder
    
    Parameters:
    
    aDataSource - the data source for which a model should be created
    
    Returns:
    
    a model created by the selected delegate decoder
    
    Throws:
    IOException - for any exceptions caused by IO problems or invalid data. Since decoding invalid data almost always results in RunTimeExceptions (NullPointerException, IndexOutOfBoundsException, IllegalArgumentException, ...) on unexpected places, implementations are advised to catch RuntimeExceptions in their decode() method, and wrap them into an IOException, as illustrated in the code snippet below.
    public ILcdModel decodeSource(ILcdDataSource aDataSource) throws IOException { try { // Perform decoding ... } catch (RuntimeException e) { throw new IOException(e); } }
    See Also:
    
    ILcdModelDecoder.canDecodeSource(ILcdDataSource)
  - discoverDataSources
```
public List<? extends ILcdDataSource> discoverDataSources(String aPath)
                                                   throws IOException
```
    Delegates to all decoders whose canDecodeSource(String) returns true for the given path.
    The first successfully created model is returned. If a decoder fails with an IOException or RuntimeException, the next decoder is tried.
    Specified by:
    
    discoverDataSources in interface ILcdModelDecoder
    
    Parameters:
    
    aPath - A path to the data source to be decoded; typically a file name or a URL.
    
    Returns:
    
    A set of data sources for the given path
    
    Throws:
    IOException - When
    
    No delegate model decoders return true for canDecodeSource(String) for the supplied path.
    
    Any delegate model decoder throws an IOException, and no data sources could be retrieved.
    
    an IOException will be thrown containing every suppressed exception.
  - decodeModelMetadata
```
public TLcdModelMetadata decodeModelMetadata(String aSourceName)
                                      throws IOException
```
    Decodes the model metadata of the given data source through a suitable delegate model decoder.
    Notes:
    - Tries all delegate decoders that return true for ILcdModelDecoder.canDecodeSource(java.lang.String) with the given the aSourceName, in order.
    - The first successfully created TLcdModelMetadata instance is returned.
    - Even if canDecodeSource(java.lang.String) returns true, there is no guarantee that this method will be able to decode aSourceName.
    Specified by:
    
    decodeModelMetadata in interface ILcdModelDecoder
    
    Parameters:
    
    aSourceName - the source from which model metadata should be extracted.
    
    Returns:
    
    a TLcdModelMetadata instance, created by the selected delegate model decoder
    
    Throws:
    IOException -
    
    If no delegate model decoder successfully decodes the source, an IOException will be thrown.
    
    If one or more delegate model decoders throw an IOException and no other delegate model decoder successfully decodes the source, an IOException will be thrown containing every suppressed exception.
    
    If a delegate decoder throws a InterruptedIOException, the decoding stops and that exception is re-thrown.
    See Also:
    
    ILcdModelDecoder.canDecodeSource(String)
  - decodeModelMetadata
```
public TLcdModelMetadata decodeModelMetadata(ILcdDataSource aDataSource)
                                      throws IOException
```
    Decodes the model metadata of the given data source through a suitable delegate model decoder.
    Notes:
    - Tries all delegate decoders that return true for ILcdModelDecoder.canDecodeSource(java.lang.String) with the given the aDataSource, in order.
    - The first successfully created TLcdModelMetadata instance is returned.
    - Even if canDecodeSource(java.lang.String) returns true, there is no guarantee that this method will be able to decode aDataSource.
    Specified by:
    
    decodeModelMetadata in interface ILcdModelDecoder
    
    Parameters:
    
    aDataSource - the data source from which model metadata should be extracted.
    
    Returns:
    
    a TLcdModelMetadata instance, created by the selected delegate model decoder
    
    Throws:
    IOException -
    
    If no delegate model decoder successfully decodes the source, an IOException will be thrown.
    
    If one or more delegate model decoders throw an IOException and no other delegate model decoder successfully decodes the source, an IOException will be thrown containing every suppressed exception.
    
    If a delegate decoder throws a InterruptedIOException, the decoding stops and that exception is re-thrown.
    See Also:
    
    ILcdModelDecoder.canDecodeSource(ILcdDataSource)
  - setInputStreamFactory
```
public void setInputStreamFactory(ILcdInputStreamFactory aInputStreamFactory)
```
    If not null, overrides the input stream factory of the contained model decoders with the given factory.
    
    Specified by:
    
    setInputStreamFactory in interface ILcdInputStreamFactoryCapable
    
    Parameters:
    
    aInputStreamFactory - the input stream factory to be used.
  - getInputStreamFactory
```
public ILcdInputStreamFactory getInputStreamFactory()
```
    Description copied from interface: ILcdInputStreamFactoryCapable
    
    Returns the input stream factory that is used.
    
    Specified by:
    
    getInputStreamFactory in interface ILcdInputStreamFactoryCapable
    
    Returns:
    
    the input stream factory that is used.

LuciadLightspeedClass TLcdCompositeModelDecoder

Example usage:

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

TLcdCompositeModelDecoder

TLcdCompositeModelDecoder

TLcdCompositeModelDecoder

Method Detail

getModelDecoders

findModelDecoders

findModelDecoders

getDisplayName

setDisplayName

canDecodeSource

decode

canDecodeSource

decodeSource

discoverDataSources

decodeModelMetadata

decodeModelMetadata

setInputStreamFactory

getInputStreamFactory