## org.biojava.bio.seq.impl
Class DummySequence

    java.lang.Object
      org.biojava.utils.AbstractChangeable
          org.biojava.bio.seq.impl.DummySequence

All Implemented Interfaces:
  Annotatable, FeatureHolder, Sequence, SymbolList, Changeable

    public final class DummySequence

extends AbstractChangeable
implements Sequence

A Sequence implementation that has a name and URI but no features, and a zero length symbol list. You will probably want to use `SequenceTools.createDummy(String uri, String name)` instead of using this class directly A better alternative may be a `RichSequence` with an `InfinitelyAmbiguousSymbolList`

Author:
  Thomas Down, David Allen, Matthew Pocock

Nested Class Summary

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

Nested classes/interfaces inherited from interface org.biojava.bio.Annotatable
`Annotatable.AnnotationForwarder`

Field Summary

Fields inherited from interface org.biojava.bio.symbol.SymbolList
`EDIT, EMPTY_LIST`

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

Fields inherited from interface org.biojava.bio.Annotatable
`ANNOTATION`

Constructor Summary
`DummySequence(String urn, String name)`

Method Summary
`boolean` `containsFeature(Feature feature)` Check if the feature is present in this holder.
`int` `countFeatures()` Count how many features are contained.
`Feature` `createFeature(Feature.Template template)` Create a new Feature, and add it to this FeatureHolder.
`void` `edit(Edit edit)` Apply an edit to the SymbolList as specified by the edit object.
`Iterator` `features()` Iterate over the features in no well defined order.
`FeatureHolder` `filter(FeatureFilter ff)` 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.
`Alphabet` `getAlphabet()` The alphabet that this SymbolList is over.
`Annotation` `getAnnotation()` Should return the associated annotation object.
`String` `getName()` The name of this sequence.
`FeatureFilter` `getSchema()` Return a schema-filter for this `FeatureHolder`.
`String` `getURN()` A Uniform Resource Identifier (URI) which identifies the sequence represented by this object.
`Iterator` `iterator()` An Iterator over all Symbols in this SymbolList.
`int` `length()` The number of symbols in this SymbolList.
`void` `removeFeature(Feature feature)` Remove a feature from this FeatureHolder.
`String` `seqString()` Stringify this symbol list.
`SymbolList` `subList(int start, int end)` Return a new SymbolList for the symbols start to end inclusive.
`String` `subStr(int start, int end)` Return a region of this symbol list as a String.
`Symbol` `symbolAt(int index)` Return the symbol at index, counting from 1.
`List` `toList()` Returns a List of symbols.

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.utils.Changeable
`addChangeListener, addChangeListener, isUnchanging, removeChangeListener, removeChangeListener`

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

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

Constructor Detail

### DummySequence

    public DummySequence(String urn,
                         String name)

Method Detail

### getAnnotation

    public Annotation getAnnotation()

  Description copied from interface: `Annotatable`
  Should return the associated annotation object.

  Specified by:
    `getAnnotation` in interface `Annotatable`
  Returns:
    an Annotation object, never null

### length

    public int length()

  Description copied from interface: `SymbolList`
  The number of symbols in this SymbolList.

  Specified by:
    `length` in interface `SymbolList`
  Returns:
    the length

### iterator

    public Iterator iterator()

  Description copied from interface: `SymbolList`
  An Iterator over all Symbols in this SymbolList.

  This is an ordered iterator over the Symbols. It cannot be used to edit the underlying symbols.

  Specified by:
    `iterator` in interface `SymbolList`
  Returns:
    an iterator

### subList

    public SymbolList subList(int start,
                              int end)
                       throws IndexOutOfBoundsException

  Description copied from interface: `SymbolList`
  Return a new SymbolList for the symbols start to end inclusive.

  The resulting SymbolList will count from 1 to (end-start + 1) inclusive, and refer to the symbols start to end of the original sequence.

  Specified by:
    `subList` in interface `SymbolList`
  Parameters:
    `start` - the first symbol of the new SymbolList
    `end` - the last symbol (inclusive) of the new SymbolList
  Throws:
    `IndexOutOfBoundsException`

### getAlphabet

    public Alphabet getAlphabet()

  Description copied from interface: `SymbolList`
  The alphabet that this SymbolList is over.

  Every symbol within this SymbolList is a member of this alphabet. `alphabet.contains(symbol) == true` for each symbol that is within this sequence.

  Specified by:
    `getAlphabet` in interface `SymbolList`
  Returns:
    the alphabet

### symbolAt

    public Symbol symbolAt(int index)
                    throws IndexOutOfBoundsException

  Description copied from interface: `SymbolList`
  Return the symbol at index, counting from 1.

  Specified by:
    `symbolAt` in interface `SymbolList`
  Parameters:
    `index` - the offset into this SymbolList
  Returns:
    the Symbol at that index
  Throws:
    `IndexOutOfBoundsException` - if index is less than 1, or greater than the length of the symbol list

### toList

    public List toList()

  Description copied from interface: `SymbolList`
  Returns a List of symbols.

  This is an immutable list of symbols. Do not edit it.

  Specified by:
    `toList` in interface `SymbolList`
  Returns:
    a List of Symbols

### seqString

    public String seqString()

  Description copied from interface: `SymbolList`
  Stringify this symbol list.

  It is expected that this will use the symbol's token to render each symbol. It should be parsable back into a SymbolList using the default token parser for this alphabet.

  Specified by:
    `seqString` in interface `SymbolList`
  Returns:
    a string representation of the symbol list

### subStr

    public String subStr(int start,
                         int end)
                  throws IndexOutOfBoundsException

  Description copied from interface: `SymbolList`
  Return a region of this symbol list as a String.

  This should use the same rules as seqString.

  Specified by:
    `subStr` in interface `SymbolList`
  Parameters:
    `start` - the first symbol to include
    `end` - the last symbol to include
  Returns:
    the string representation
  Throws:
    `IndexOutOfBoundsException` - if either start or end are not within the SymbolList

### edit

    public void edit(Edit edit)
              throws IndexOutOfBoundsException,
                     IllegalAlphabetException,
                     ChangeVetoException

  Description copied from interface: `SymbolList`
  Apply an edit to the SymbolList as specified by the edit object.

  ## Description

  All edits can be broken down into a series of operations that change contiguous blocks of the sequence. This represent a one of those operations.

  When applied, this Edit will replace 'length' number of symbols starting a position 'pos' by the SymbolList 'replacement'. This allow to do insertions (length=0), deletions (replacement=SymbolList.EMPTY_LIST) and replacements (length>=1 and replacement.length()>=1).

  The pos and pos+length should always be valid positions on the SymbolList to:

  - be edited (between 0 and symL.length()+1).
  - To append to a sequence, pos=symL.length()+1, pos=0.
  - To insert something at the beginning of the sequence, set pos=1 and length=0.

  ## Examples

  `

       SymbolList seq = DNATools.createDNA("atcaaaaacgctagc");
       System.out.println(seq.seqString());

       // delete 5 bases from position 4
       Edit ed = new Edit(4, 5, SymbolList.EMPTY_LIST);
       seq.edit(ed);
       System.out.println(seq.seqString());

       // delete one base from the start
       ed = new Edit(1, 1, SymbolList.EMPTY_LIST);
       seq.edit(ed);

       // delete one base from the end
       ed = new Edit(seq.length(), 1, SymbolList.EMPTY_LIST);
       seq.edit(ed);
       System.out.println(seq.seqString());

       // overwrite 2 bases from position 3 with "tt"
       ed = new Edit(3, 2, DNATools.createDNA("tt"));
       seq.edit(ed);
       System.out.println(seq.seqString());

       // add 6 bases to the start
       ed = new Edit(1, 0, DNATools.createDNA("aattgg");
       seq.edit(ed);
       System.out.println(seq.seqString());

       // add 4 bases to the end
       ed = new Edit(seq.length() + 1, 0, DNATools.createDNA("tttt"));
       seq.edit(ed);
       System.out.println(seq.seqString());

       // full edit
       ed = new Edit(3, 2, DNATools.createDNA("aatagaa");
       seq.edit(ed);
       System.out.println(seq.seqString());

  `

  Specified by:
    `edit` in interface `SymbolList`
  Parameters:
    `edit` - the Edit to perform
  Throws:
    `IndexOutOfBoundsException` - if the edit does not lie within the SymbolList
    `IllegalAlphabetException` - if the SymbolList to insert has an incompatible alphabet
    `ChangeVetoException` - if either the SymboList does not support the edit, or if the change was vetoed

### getName

    public String getName()

  Description copied from interface: `Sequence`
  The name of this sequence.

  The name may contain spaces or odd characters.

  Specified by:
    `getName` in interface `Sequence`
  Returns:
    the name as a String

### getURN

    public String getURN()

  Description copied from interface: `Sequence`
  A Uniform Resource Identifier (URI) which identifies the sequence represented by this object. For sequences in well-known database, this may be a URN, e.g.

       urn:sequence/embl:AL121903

  It may also be a URL identifying a specific resource, either locally or over the network

       file:///home/thomas/myseq.fa|seq22
       http://www.mysequences.net/chr22.seq

  Specified by:
    `getURN` in interface `Sequence`
  Returns:
    the URI as a String

### countFeatures

    public int countFeatures()

  Description copied from interface: `FeatureHolder`
  Count how many features are contained.

  Specified by:
    `countFeatures` in interface `FeatureHolder`
  Returns:
    a positive integer or zero, equal to the number of features contained

### features

    public Iterator features()

  Description copied from interface: `FeatureHolder`
  Iterate over the features in no well defined order.

  Specified by:
    `features` in interface `FeatureHolder`
  Returns:
    an Iterator

### 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.

### filter

    public FeatureHolder filter(FeatureFilter ff)

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

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

### createFeature

    public Feature createFeature(Feature.Template template)
                          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 feature)
                       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

### containsFeature

    public boolean containsFeature(Feature feature)

  Description copied from interface: `FeatureHolder`
  Check if the feature is present in this holder.

  Specified by:
    `containsFeature` in interface `FeatureHolder`
  Parameters:
    `feature` - the Feature to check
  Returns:
    true if f is in this set

### getSchema

    public FeatureFilter getSchema()

  Description copied from interface: `FeatureHolder`
  Return a schema-filter for this `FeatureHolder`. This is a filter which all `Feature`s immediately contained by this `FeatureHolder` will match. It need not directly match their child features, but it can (and should!) provide information about them using `FeatureFilter.OnlyChildren` filters. In cases where there is no feature hierarchy, this can be indicated by including `FeatureFilter.leaf` in the schema filter.

  For the truly non-informative case, it is possible to return `FeatureFilter.all`. However, it is almost always possible to provide slightly more information that this. For example, `Sequence` objects should, at a minimum, return `FeatureFilter.top_level`. `Feature` objects should, as a minimum, return `FeatureFilter.ByParent(new FeatureFilter.ByFeature(this))`.

  Specified by:
    `getSchema` in interface `FeatureHolder`
  Returns:
    the schema filter