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## org.biojava.bio.seq
Class AbstractFeatureHolder

    java.lang.Object
      org.biojava.utils.AbstractChangeable
          org.biojava.bio.seq.AbstractFeatureHolder

All Implemented Interfaces:
  FeatureHolder, Changeable

Direct Known Subclasses:
  MergeFeatureHolder, ProjectedFeatureHolder, SimpleFeatureHolder

    public abstract class AbstractFeatureHolder

extends AbstractChangeable
implements FeatureHolder

An abstract implementation of FeatureHolder. This provides the filter method, but who wants to code that more than once? It also has support for the ChangeEvents.

Author:
  Matthew Pocock, Thomas Down

Nested Class Summary

Nested classes/interfaces inherited from interface org.biojava.bio.seq.FeatureHolder
`FeatureHolder.EmptyFeatureHolder`

Field Summary

Fields inherited from interface org.biojava.bio.seq.FeatureHolder
`EMPTY_FEATURE_HOLDER, FEATURES, SCHEMA`

Constructor Summary
`AbstractFeatureHolder()`

Method Summary
`Feature` | `createFeature(Feature.Template temp)` Create a new Feature, and add it to this FeatureHolder.
`FeatureHolder` | `filter(FeatureFilter filter)` Query this set of features using a supplied `FeatureFilter`.
`FeatureHolder` | `filter(FeatureFilter ff, boolean recurse)` Return a new FeatureHolder that contains all of the children of this one that passed the filter fc.
`void` | `removeFeature(Feature f)` Remove a feature from this FeatureHolder.

Methods inherited from class org.biojava.utils.AbstractChangeable
`addChangeListener, addChangeListener, generateChangeSupport, getChangeSupport, hasListeners, hasListeners, isUnchanging, removeChangeListener, removeChangeListener`

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

Methods inherited from interface org.biojava.bio.seq.FeatureHolder
`containsFeature, countFeatures, features, getSchema`

Methods inherited from interface org.biojava.utils.Changeable
`addChangeListener, addChangeListener, isUnchanging, removeChangeListener, removeChangeListener`

Constructor Detail

### AbstractFeatureHolder

    public AbstractFeatureHolder()

Method Detail

### filter

    public FeatureHolder filter(FeatureFilter filter)

  Description copied from interface: `FeatureHolder`
  Query this set of features using a supplied `FeatureFilter`.

  Specified by:
    `filter` in interface `FeatureHolder`
  Parameters:
    `filter` - the `FeatureFilter` to apply.
  Returns:
    all features in this container which match `filter`.

### filter

    public FeatureHolder filter(FeatureFilter ff,
                                boolean recurse)

  Description copied from interface: `FeatureHolder`
  Return a new FeatureHolder that contains all of the children of this one that passed the filter fc. This method is scheduled for deprecation. Use the 1-arg filter instead.

  Specified by:
    `filter` in interface `FeatureHolder`
  Parameters:
    `ff` - the FeatureFilter to apply
    `recurse` - true if all features-of-features should be scanned, and a single flat collection of features returned, or false if just immediate children should be filtered.

### createFeature

    public Feature createFeature(Feature.Template temp)
                          throws BioException,
                                 ChangeVetoException

  Description copied from interface: `FeatureHolder`
  Create a new Feature, and add it to this FeatureHolder. This method will generally only work on Sequences, and on some Features which have been attached to Sequences.

  Specified by:
    `createFeature` in interface `FeatureHolder`
  Throws:
    `BioException` - if something went wrong during creating the feature
    `ChangeVetoException` - if this FeatureHolder does not support creation of new features, or if the change was vetoed

### removeFeature

    public void removeFeature(Feature f)
                       throws ChangeVetoException,
                              BioException

  Description copied from interface: `FeatureHolder`
  Remove a feature from this FeatureHolder.

  Specified by:
    `removeFeature` in interface `FeatureHolder`
  Throws:
    `ChangeVetoException` - if this FeatureHolder does not support feature removal or if the change was vetoed
    `BioException` - if there was an error removing the feature

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