/**
* Constructs a <code>StatDataFileReaderSpi</code> instance with a given set of values.
*
* @param vendorName the vendor name.
* @param version a version identifier.
* @param names at least one format name or more.
* @param suffixes at least one format extensions or more.
* @param MIMETypes at least one format's MIME type or more.
* @param readerClassName the fully qualified name of the associated <code>StatDataFileReaderSpi
* </code>.
*/
public StatDataFileReaderSpi(
String vendorName,
String version,
String[] names,
String[] suffixes,
String[] MIMETypes,
String readerClassName) {
super(vendorName, version, names, suffixes, MIMETypes, readerClassName);
dbgLog.fine("StatDataFileReaderSpi is called");
}
/**
* The service provider interface (SPI) for <code>StatDataFileReader</code>. This abstract class
* supplies several types of information about the associated <code>StatDataFileReader</code> class.
*
* @author akio sone at UNC-Odum
*/
public abstract class StatDataFileReaderSpi extends StatDataFileReaderWriterSpi {
private static Logger dbgLog =
Logger.getLogger(StatDataFileReaderSpi.class.getPackage().getName());
/**
* A <code>String</code> array of the fully qualified names of all the <code>StatDataFileWriterSpi
* </code> classes associated with this <code>StatDataFileReader</code> class
*/
protected String[] writerSpiNames = null;
/**
* Gets the value of the writerSpiNames field.
*
* @return the value of the writerSpiNames field.
*/
public String[] getStatDataFileWriterSpiNames() {
return writerSpiNames == null ? null : (String[]) writerSpiNames.clone();
}
/** Constructs an empty <code>StatDataFileReaderSpi</code> instance. */
protected StatDataFileReaderSpi() {}
/**
* Constructs a <code>StatDataFileReaderSpi</code> instance with a given set of values.
*
* @param vendorName the vendor name.
* @param version a version identifier.
* @param names at least one format name or more.
* @param suffixes at least one format extensions or more.
* @param MIMETypes at least one format's MIME type or more.
* @param readerClassName the fully qualified name of the associated <code>StatDataFileReaderSpi
* </code>.
*/
public StatDataFileReaderSpi(
String vendorName,
String version,
String[] names,
String[] suffixes,
String[] MIMETypes,
String readerClassName) {
super(vendorName, version, names, suffixes, MIMETypes, readerClassName);
dbgLog.fine("StatDataFileReaderSpi is called");
}
/**
* Returns true if the supplied source object starts with a sequence of bytes that is of the
* format supported by this reader. Returning true from this method does not guarantee that
* reading will successfully end.
*
* @param source typically a <code>BufferedInputStream</code> object. object to be read.
* @return true if the stream can be read.
* @throws java.io.IOException if an I/O error occurs during reading the stream.
*/
public abstract boolean canDecodeInput(Object source) throws IOException;
/**
* Returns true if the supplied <code>File</code> object starts with a sequence of bytes that is
* of the format supported by this reader. Returning true from this method does not guarantee that
* reading will successfully end.
*
* @param file a <code>File</code> object to be read.
* @return true if the stream can be read.
* @throws java.io.IOException if an I/O error occurs during reading the stream.
*/
public abstract boolean canDecodeInput(File file) throws IOException;
/**
* Returns true if the supplied <code>BufferedInputStream</code> object starts with a sequence of
* bytes that is of the format supported by this reader. Returning true from this method does not
* guarantee that reading will successfully end.
*
* @param stream a <code>BufferedInputStream</code> object.
* @return true if the stream can be read.
* @throws java.io.IOException if an I/O error occurs during reading the stream.
*/
public abstract boolean canDecodeInput(BufferedInputStream stream) throws IOException;
/**
* Returns an instance of <code>StatDataFileReader</code> implementation associated with this
* service provider.
*
* @param extension a plug-in specific extension object.
* @return a <code>StatDataFileReader</code> instance.
* @throws IOException if the instantiation attempt of the reader fails.
*/
public abstract StatDataFileReader createReaderInstance(Object extension) throws IOException;
/**
* Returns an instance of <code>StatDataFileReader</code> implementation associated witht his
* service provider.
*
* @return a <code>StatDataFileReader</code> instance.
* @throws java.io.IOException if an error occurs during the reader instantiation.
*/
public StatDataFileReader createReaderInstance() throws IOException {
return createReaderInstance(null);
}
/**
* Returns <code>true</code> if the <code>StatDataFileReader</code> object supplied in is an
* instance of the <code>StatDataFileReader</code> associated with this service provider.
*
* @param reader an <code>StatDataFileReader</code> object.
* @return <code>true</code> if <code>reader</code> is recognized.
*/
public boolean isOwnReader(StatDataFileReader reader) {
if (reader == null) {
throw new IllegalArgumentException("reader == null!");
}
String name = reader.getClass().getName();
return name.equals(pluginClassName);
}
}