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## org.biojavax.bio.db.biosql
Interface BioSQLFeatureFilter

All Superinterfaces:
  FeatureFilter, Serializable

All Known Implementing Classes:
  BioSQLAcceptAllFilter, BioSQLAcceptNoneFilter, BioSQLFeatureFilter.And, BioSQLFeatureFilter.ByName, BioSQLFeatureFilter.ByNote, BioSQLFeatureFilter.ByNoteTermOnly, BioSQLFeatureFilter.ByRank, BioSQLFeatureFilter.BySequenceName, BioSQLFeatureFilter.BySourceTerm, BioSQLFeatureFilter.BySourceTermName, BioSQLFeatureFilter.ByStrand, BioSQLFeatureFilter.ByTypeTerm, BioSQLFeatureFilter.ByTypeTermName, BioSQLFeatureFilter.ContainedByRichLocation, BioSQLFeatureFilter.HibernateFeatureFilter, BioSQLFeatureFilter.Not, BioSQLFeatureFilter.Or, BioSQLFeatureFilter.OverlapsRichLocation

    public interface BioSQLFeatureFilter

extends FeatureFilter

A filter for accepting or rejecting a feature.

It is possible to write custom `FeatureFilter`s by implementing this interface. There are also a wide range of built-in features, and it is possible to build complex queries using `FeatureFilter.And`, `FeatureFilter.Or`, and `FeatureFilter.Not`. Where possible, use of the built-in filters is preferable to writing new filters, since the methods in the `FilterUtils` class have access to special knowledge about the built-in filter types and how they relate to one another.

If the filter is to be used in a remote process, it is recognized that it may be serialized and sent over to run remotely, rather than each feature being retrieved locally.

This class requires the Hibernate JAR files to be on your classpath at runtime. It is designed ONLY for use with BioSQLRichSequenceDB and BioSQLBioEntryDB.

Since:
  1.5, 1.5
Author:
  Matthew Pocock, Thomas Down, Richard Holland

Nested Class Summary
`static class` | `BioSQLFeatureFilter.And` A filter that returns all features accepted by both child filter.
`static class` | `BioSQLFeatureFilter.ByName` Construct one of these to filter features by display name.
`static class` | `BioSQLFeatureFilter.ByNote` A filter that returns all features that have the given note, and the value and rank is checked as well.
`static class` | `BioSQLFeatureFilter.ByNoteTermOnly` A filter that returns all features that have a note with the given term.
`static class` | `BioSQLFeatureFilter.ByRank` Construct one of these to filter features by rank.
`static class` | `BioSQLFeatureFilter.BySequenceName` Accept features that reside on a sequence with a particular name.
`static class` | `BioSQLFeatureFilter.BySourceTerm` Construct one of these to filter features by source.
`static class` | `BioSQLFeatureFilter.BySourceTermName` Construct one of these to filter features by source (name only - parent ontology is ignored).
`static class` | `BioSQLFeatureFilter.ByStrand` A filter that returns all features having locations on a given strand.
`static class` | `BioSQLFeatureFilter.ByTypeTerm` Construct one of these to filter features by type.
`static class` | `BioSQLFeatureFilter.ByTypeTermName` Construct one of these to filter features by type (name only - parent ontology is ignored).
`static class` | `BioSQLFeatureFilter.ContainedByRichLocation` A filter that returns all features contained within a location.
`static class` | `BioSQLFeatureFilter.HibernateFeatureFilter` A filter for Hibernate-BioSQL filters to extend.
`static class` | `BioSQLFeatureFilter.Not` A filter that returns all features not accepted by a child filter.
`static class` | `BioSQLFeatureFilter.Or` A filter that returns all features accepted by at least one child filter.
`static class` | `BioSQLFeatureFilter.OverlapsRichLocation` A filter that returns all features overlapping a location.
`static class` | `BioSQLFeatureFilter.Tools` A class representing some useful stuff you can do with BioSQLFeatureFilters, for instance converting plain FeatureFilters into a their BioSQLFeatureFilter equivalents (where possible).

Nested classes/interfaces inherited from interface org.biojava.bio.seq.FeatureFilter
`FeatureFilter.AnnotationContains, FeatureFilter.ByAncestor, FeatureFilter.ByAnnotation, FeatureFilter.ByAnnotationType, FeatureFilter.ByChild, FeatureFilter.ByClass, FeatureFilter.ByComponentName, FeatureFilter.ByDescendant, FeatureFilter.ByFeature, FeatureFilter.ByPairwiseScore, FeatureFilter.ByParent, FeatureFilter.BySource, FeatureFilter.ByType, FeatureFilter.ContainedByLocation, FeatureFilter.FrameFilter, FeatureFilter.HasAnnotation, FeatureFilter.OnlyChildren, FeatureFilter.OnlyDescendants, FeatureFilter.OverlapsLocation, FeatureFilter.ShadowContainedByLocation, FeatureFilter.ShadowOverlapsLocation, FeatureFilter.StrandFilter`

Field Summary
`static BioSQLFeatureFilter` | `all` All features are selected by this filter.
`static BioSQLFeatureFilter` | `none` No features are selected by this filter.

Fields inherited from interface org.biojava.bio.seq.FeatureFilter
`leaf, top_level`

Method Summary
`Object` | `asCriterion()` This method returns a Hibernate Criterion object that can be used to query the database.
`Map` | `criterionAliasMap()` Returns a map of property names (keys) to aliases (values), if the criterion returned by asCriterion() uses aliases at all.

Methods inherited from interface org.biojava.bio.seq.FeatureFilter
`accept`

Field Detail

### all

    static final BioSQLFeatureFilter all

  All features are selected by this filter.

### none

    static final BioSQLFeatureFilter none

  No features are selected by this filter.

Method Detail

### asCriterion

    Object asCriterion()

  This method returns a Hibernate Criterion object that can be used to query the database.

  Returns:
    a Hibernate Criterion object representing this filter.

### criterionAliasMap

    Map criterionAliasMap()

  Returns a map of property names (keys) to aliases (values), if the criterion returned by asCriterion() uses aliases at all. If not, then it must at least return the empty map else you'll get NullPointerExceptions thrown elsewhere.

  Returns:
    Map a map of property names to aliases used in the criterion.

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