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

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

    public class SequencesAsGFF

extends Object

Turns a sequence database into a GFF event stream.

Author:
  Matthew Pocock, Thomas Down, Len Trigg

Constructor Summary
`SequencesAsGFF()`

Method Summary
`protected SimpleGFFRecord` | `createGFFRecord(Feature feature, String id)` Internal method to create a GFFRecord from an individual Feature.
`protected void` | `doPreProcessSequence(Sequence seq, GFFDocumentHandler handler, String id)` Emit any per-sequence header information.
`protected void` | `doProcessFeature(Feature feature, GFFDocumentHandler handler, String id)` Internal method to process an individual Feature.
`protected void` | `doProcessSequence(Sequence seq, GFFDocumentHandler handler, String id)` Internal method to process an individual Sequence.
`FeatureFilter` | `getFeatureFilter()` Return the current FeatureFilter.
`boolean` | `getGenerateSequenceHeader()` Discover if per-sequence header lines will be generated.
`boolean` | `getRecurse()` Return whether features will be filtered recursively or not.
`boolean` | `getShatter()` Determine if features with non-contiguous locations will be broken into multiple GFF records.
`void` | `processDB(SequenceDB seqDB, GFFDocumentHandler handler)` Process all Sequences within a SequenceDB, informing handler of any suitable features.
`void` | `processSequence(Sequence seq, GFFDocumentHandler handler)` Process an individual Sequence, informing handler of any suitable features.
`void` | `setFeatureFilter(FeatureFilter filter)` Replace the current FeatureFilter with filter.
`void` | `setGenerateSequenceHeader(boolean b)` Specify whether a per-sequence header line, giving the length of the sequence, should be generated.
`void` | `setRecurse(boolean recurse)` Set whether features will be filtered recursively to recurse.
`void` | `setShatter(boolean b)` Specify whether features with non-contiguous locations should be broken up such that a GFF feature line is emitted for each contiguous block.

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

Constructor Detail

### SequencesAsGFF

    public SequencesAsGFF()

Method Detail

### setShatter

    public void setShatter(boolean b)

  Specify whether features with non-contiguous locations should be broken up such that a GFF feature line is emitted for each contiguous block.

  Parameters:
    `b` -
  Since:
    1.4

### getShatter

    public boolean getShatter()

  Determine if features with non-contiguous locations will be broken into multiple GFF records.

  Since:
    1.4

### setGenerateSequenceHeader

    public void setGenerateSequenceHeader(boolean b)

  Specify whether a per-sequence header line, giving the length of the sequence, should be generated.

  Since:
    1.4

### getGenerateSequenceHeader

    public boolean getGenerateSequenceHeader()

  Discover if per-sequence header lines will be generated.

  Since:
    1.4

### getFeatureFilter

    public FeatureFilter getFeatureFilter()

  Return the current FeatureFilter.

  This is the object that will accept or reject individual features.

  Returns:
    the current FeatureFilter

### setFeatureFilter

    public void setFeatureFilter(FeatureFilter filter)

  Replace the current FeatureFilter with filter.

  Parameters:
    `filter` - the new FeatureFilter

### getRecurse

    public boolean getRecurse()

  Return whether features will be filtered recursively or not.

  Returns:
    whether or not to recurse

### setRecurse

    public void setRecurse(boolean recurse)

  Set whether features will be filtered recursively to recurse.

  Parameters:
    `recurse` - true if you want to recurse, false otherwise

### doPreProcessSequence

    protected void doPreProcessSequence(Sequence seq,
                                        GFFDocumentHandler handler,
                                        String id)
                                 throws BioException

  Emit any per-sequence header information. The default implementation emits sequence-region comment lines.

  Throws:
    `BioException`
  Since:
    1.4

### doProcessSequence

    protected void doProcessSequence(Sequence seq,
                                     GFFDocumentHandler handler,
                                     String id)
                              throws BioException

  Internal method to process an individual Sequence.

  Parameters:
    `seq` - the Sequence to GFFify
    `handler` - the GFFDocumentHandler that will receive the GFF for all suitable features within seq
    `id` - the value of the seqName field in any GFFRecords produced
  Throws:
    `BioException`

### doProcessFeature

    protected void doProcessFeature(Feature feature,
                                    GFFDocumentHandler handler,
                                    String id)
                             throws BioException

  Internal method to process an individual Feature.

  Parameters:
    `feature` - the Feature to GFFify
    `handler` - the GFFDocumentHandler that will receive the GFF for this feature
    `id` - the value of the seqName field in any GFFRecords produced
  Throws:
    `BioException`

### createGFFRecord

    protected SimpleGFFRecord createGFFRecord(Feature feature,
                                              String id)
                                       throws BioException

  Internal method to create a GFFRecord from an individual Feature.

  Parameters:
    `feature` - the Feature to GFFify
    `id` - the value of the seqName field in any GFFRecords produced
  Throws:
    `BioException`

### processSequence

    public void processSequence(Sequence seq,
                                GFFDocumentHandler handler)
                         throws BioException

  Process an individual Sequence, informing handler of any suitable features.

  Parameters:
    `seq` - the Sequence to GFFify
    `handler` - the GFFDocumentHandler that will receive the GFF for all suitable features within seq
  Throws:
    `BioException`

### processDB

    public void processDB(SequenceDB seqDB,
                          GFFDocumentHandler handler)
                   throws BioException

  Process all Sequences within a SequenceDB, informing handler of any suitable features.

  Parameters:
    `seqDB` - the SequenceDB to GFFify
    `handler` - the GFFDocumentHandler that will receive the GFF for all suitable features within seqDB
  Throws:
    `BioException`

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