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## org.biojava.bio.program.gff
Class GFFTools

    java.lang.Object
      org.biojava.bio.program.gff.GFFTools

    public class GFFTools

extends Object

Since:
  1.2
Author:
  Mark Schreiber, Matthew Pocock

Field Summary
`static int` | `NO_FRAME` Flag to indicate that there is no frame info.
`static double` | `NO_SCORE` Flag to indicate that there is no score info.

Constructor Summary
`GFFTools()`

Method Summary
`static Sequence` | `annotateSequence(Sequence seq, GFFEntrySet ents)` Annotates a sequence with the features from a GFF entry set with sequence name matching this sequence.
`static Sequence` | `annotateSequence(Sequence seq, GFFEntrySet ents, boolean checkSeqName)` Annotates a sequence with the features from a GFF entry set.
`static SequenceDB` | `annotateSequences(SequenceDB seqs, GFFEntrySet ents)` Annotates all sequences in a sequence DB with features from a GFF entry set.
`static GFFEntrySet` | `gffFromSeqDB(SequenceDB seqDB)` Creates a GFFEntrySet containing one entry for each feature on each sequence of a SequenceDB.
`static GFFEntrySet` | `gffFromSequence(Sequence seq)` Creates a GFFEntrySet containing one entry for each feature on a sequence.
`static GFFEntrySet` | `readGFF(BufferedReader gffIn)` Read all GFF entries from a buffered reader.
`static GFFEntrySet` | `readGFF(BufferedReader gffIn, GFFRecordFilter recFilt)` Read all GFF entries matching a filter from a buffered reader.
`static GFFEntrySet` | `readGFF(File inFile)` Reads a `GFFEntrySet` from a file with no filtering.
`static GFFEntrySet` | `readGFF(File inFile, GFFRecordFilter recFilt)` Reads a GFFEntrySet from a file with the specified filter.
`static GFFEntrySet` | `readGFF(String fileName)` Deprecated. use: readGff(File)
`static GFFEntrySet` | `readGFF(String fileName, GFFRecordFilter recFilt)` Deprecated. use: readGff(File,GFFRecordFilter)
`static void` | `writeGFF(File outFile, GFFEntrySet ents)` Writes a GFFEntrySet to a file.
`static void` | `writeGFF(PrintWriter pw, GFFEntrySet ents)` Writes a GFFEntrySet to a PrintWriter.
`static void` | `writeGFF(String fileName, GFFEntrySet ents)` Writes a GFFEntrySet to a file.

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

Field Detail

### NO_SCORE

    public static double NO_SCORE

  Flag to indicate that there is no score info.

### NO_FRAME

    public static int NO_FRAME

  Flag to indicate that there is no frame info.

Constructor Detail

### GFFTools

    public GFFTools()

Method Detail

### readGFF

    public static GFFEntrySet readGFF(String fileName)
                               throws FileNotFoundException,
                                      ParserException,
                                      BioException,
                                      IOException

  Deprecated. use: readGff(File)

  Reads a `GFFEntrySet` from a file with no filtering.

  Parameters:
    `fileName` - the file containing the GFF
  Returns:
    a `GFFEntrySet` encapsulating the records read from the file
  Throws:
    `FileNotFoundException` - if file is not found
    `ParserException` - if format is wrong
    `BioException` - if format is wrong
    `IOException` - if file reading error occurs

### readGFF

    public static GFFEntrySet readGFF(String fileName,
                                      GFFRecordFilter recFilt)
                               throws FileNotFoundException,
                                      ParserException,
                                      BioException,
                                      IOException

  Deprecated. use: readGff(File,GFFRecordFilter)

  Reads a GFFEntrySet from a file with the specified filter.

  Parameters:
    `fileName` - the file containing the GFF
    `recFilt` - the filter to use
  Returns:
    a `GFFEntrySet` encapsulating the records read from the file
  Throws:
    `FileNotFoundException` - if file is not found
    `ParserException` - if format is wrong
    `BioException` - if format is wrong
    `IOException` - if file reading error occurs

### readGFF

    public static GFFEntrySet readGFF(File inFile)
                               throws FileNotFoundException,
                                      ParserException,
                                      BioException,
                                      IOException

  Reads a `GFFEntrySet` from a file with no filtering.

  Parameters:
    `inFile` - the File containing the GFF
  Returns:
    a `GFFEntrySet` encapsulating the records read from the file
  Throws:
    `FileNotFoundException` - if file is not found
    `ParserException` - if format is wrong
    `BioException` - if format is wrong
    `IOException` - if file reading error occurs

### readGFF

    public static GFFEntrySet readGFF(File inFile,
                                      GFFRecordFilter recFilt)
                               throws FileNotFoundException,
                                      ParserException,
                                      BioException,
                                      IOException

  Reads a GFFEntrySet from a file with the specified filter.

  Parameters:
    `inFile` - the File containing the GFF
    `recFilt` - the filter to use
  Returns:
    a `GFFEntrySet` encapsulating the records read from the file
  Throws:
    `FileNotFoundException` - if file is not found
    `ParserException` - if format is wrong
    `BioException` - if format is wrong
    `IOException` - if file reading error occurs

### readGFF

    public static GFFEntrySet readGFF(BufferedReader gffIn)
                               throws ParserException,
                                      BioException,
                                      IOException

  Read all GFF entries from a buffered reader. This will read up untill the end of the reader.

  Parameters:
    `gffIn` - the BufferedReader to read text from
  Returns:
    a GFFEntrySet containing all of the GFF that could be read
  Throws:
    `parserException` - if the text could not be parsed as GFF
    `BioException` - if there was some error reading the GFF
    `IOException` - if there was an error with the reader
    `ParserException`

### readGFF

    public static GFFEntrySet readGFF(BufferedReader gffIn,
                                      GFFRecordFilter recFilt)
                               throws ParserException,
                                      BioException,
                                      IOException

  Read all GFF entries matching a filter from a buffered reader. This will read up untill the end of the reader.

  Parameters:
    `gffIn` - the BufferedReader to read text from
  Returns:
    a GFFEntrySet containing all of the GFF that could be read
  Throws:
    `parserException` - if the text could not be parsed as GFF
    `BioException` - if there was some error reading the GFF
    `IOException` - if there was an error with the reader
    `ParserException`

### writeGFF

    public static void writeGFF(String fileName,
                                GFFEntrySet ents)
                         throws IOException

  Writes a GFFEntrySet to a file.

  Parameters:
    `fileName` - the file to write to
    `ents` - the entries to write
  Throws:
    `IOException` - if file writing fails

### writeGFF

    public static void writeGFF(File outFile,
                                GFFEntrySet ents)
                         throws IOException

  Writes a GFFEntrySet to a file.

  Parameters:
    `outFile` - the file to write to
    `ents` - the entry set to write
  Throws:
    `IOException` - if writing to the file fails

### writeGFF

    public static void writeGFF(PrintWriter pw,
                                GFFEntrySet ents)
                         throws IOException

  Writes a GFFEntrySet to a PrintWriter.

  Parameters:
    `pw` - the PrintWriter to write to
    `ents` - the entries to write
  Throws:
    `IOException` - if file writing fails

### annotateSequence

    public static Sequence annotateSequence(Sequence seq,
                                            GFFEntrySet ents)

  Annotates a sequence with the features from a GFF entry set with sequence name matching this sequence.

  Parameters:
    `seq` - the `Sequence` to annotate.
    `ents` - the the GFF features to annotate it with.
  Returns:
    a reference to a newly annotated sequence.

### annotateSequence

    public static Sequence annotateSequence(Sequence seq,
                                            GFFEntrySet ents,
                                            boolean checkSeqName)

  Annotates a sequence with the features from a GFF entry set.

  Parameters:
    `seq` - the `Sequence` to annotate.
    `ents` - the the GFF features to annotate it with.
    `checkSeqName` - boolean flat, if true only annotate sequence with features that have matching sequence names, otherwise annotate all features
  Returns:
    a reference to a newly annotated sequence.

### annotateSequences

    public static SequenceDB annotateSequences(SequenceDB seqs,
                                               GFFEntrySet ents)
                                        throws IllegalIDException,
                                               BioException

  Annotates all sequences in a sequence DB with features from a GFF entry set.

  Parameters:
    `seqs` - the SequenceDB to annotate
    `ents` - the GFFEntrySet to annote with
  Returns:
    a SequenceDB with all the annotations on
  Throws:
    `IllegalIDException`
    `BioException`

### gffFromSequence

    public static GFFEntrySet gffFromSequence(Sequence seq)
                                       throws BioException

  Creates a GFFEntrySet containing one entry for each feature on a sequence.

  Parameters:
    `seq` - the Sequence to create features for
  Returns:
    a new GFFEntrySet with gff records for each featre on the sequence
  Throws:
    `BioException` - if something went wrong GFF-ifying the sequences features

### gffFromSeqDB

    public static GFFEntrySet gffFromSeqDB(SequenceDB seqDB)
                                    throws BioException

  Creates a GFFEntrySet containing one entry for each feature on each sequence of a SequenceDB.

  Note: This converts all features in the whole database to in-memorey GFFRecord instances. This will take up considerable memory for large databases.

  Parameters:
    `seqDB` - the SequenceDB to create features for
  Returns:
    a new GFFEntrySet with gff records for each feature on the database
  Throws:
    `BioException` - if something went wrong GFF-ifying the sequences features

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