All Known Subinterfaces:

ExtendedPsiXmlXref

All Known Implementing Classes:

CsvXref, DefaultXref, MitabXref, XmlXref, XmlXref, XmlXref
```
public interface Xref
```
Cross reference to an external database/resource which can give more information about an object. Ex: - GO cross references for an interactor to give information about its biological role(s) or location. - publication primary references - identifier of an object (use ExternalIdentifier) - imex primary references - secondary references to an external database - ...
Since:
```
22/11/12
```
Version:

$Id$

Author:

Marine Dumousseau (marine@ebi.ac.uk)

Field Summary

Fields
Modifier and Type	Field	Description
`static String`	`CHAIN_PARENT`	Constant `CHAIN_PARENT="chain-parent"`
`static String`	`CHAIN_PARENT_MI`	Constant `CHAIN_PARENT_MI="MI:0951"`
`static String`	`CHEBI`	Constant `CHEBI="chebi"`
`static String`	`CHEBI_MI`	Constant `CHEBI_MI="MI:0474"`
`static String`	`COMPLEX_PORTAL`	Constant `COMPLEX_PORTAL="complex portal"`
`static String`	`COMPLEX_PORTAL_MI`	Constant `COMPLEX_PORTAL_MI="MI:2279`
`static String`	`COMPLEX_PRIMARY`	Constant `COMPLEX_PRIMARY="complex-primary"`
`static String`	`COMPLEX_PRIMARY_MI`	Constant `COMPLEX_PRIMARY_MI="MI:2282"`
`static String`	`DDBJ_EMBL_GENBANK`	Constant `DDBJ_EMBL_GENBANK="ddbj/embl/genbank"`
`static String`	`DDBJ_EMBL_GENBANK_MI`	Constant `DDBJ_EMBL_GENBANK_MI="MI:0475"`
`static String`	`DOI`	Constant `DOI="doi"`
`static String`	`DOI_MI`	Constant `DOI_MI="MI:0574"`
`static String`	`ENSEMBL`	Constant `ENSEMBL="ensembl"`
`static String`	`ENSEMBL_GENOMES`	Constant `ENSEMBL_GENOMES="ensemblgenomes"`
`static String`	`ENSEMBL_GENOMES_MI`	Constant `ENSEMBL_GENOMES_MI="MI:1013"`
`static String`	`ENSEMBL_MI`	Constant `ENSEMBL_MI="MI:0476"`
`static String`	`ENTREZ_GENE`	Constant `ENTREZ_GENE="entrezgene/locuslink"`
`static String`	`ENTREZ_GENE_MI`	Constant `ENTREZ_GENE_MI="MI:0477"`
`static String`	`GO`	Constant `GO="go"`
`static String`	`GO_MI`	Constant `GO_MI="MI:0448"`
`static String`	`IDENTITY`	Constant `IDENTITY="identity"`
`static String`	`IDENTITY_MI`	Constant `IDENTITY_MI="MI:0356"`
`static String`	`IMEX`	Constant `IMEX="imex"`
`static String`	`IMEX_MI`	Constant `IMEX_MI="MI:0670"`
`static String`	`IMEX_PRIMARY`	Constant `IMEX_PRIMARY="imex-primary"`
`static String`	`IMEX_PRIMARY_MI`	Constant `IMEX_PRIMARY_MI="MI:0662"`
`static String`	`INTACT_MI`	Constant `INTACT_MI="MI:0469"`
`static String`	`INTERACTOR_SET_QUALIFIER`	Constant `INTERACTOR_SET_QUALIFIER="set member"`
`static String`	`INTERACTOR_SET_QUALIFIER_MI`	Constant `INTERACTOR_SET_QUALIFIER_MI="MI:1341"`
`static String`	`INTERPRO`	Constant `INTERPRO="interpro"`
`static String`	`INTERPRO_MI`	Constant `INTERPRO_MI="MI:0449"`
`static String`	`ISOFORM_PARENT`	Constant `ISOFORM_PARENT="isoform-parent"`
`static String`	`ISOFORM_PARENT_MI`	Constant `ISOFORM_PARENT_MI="MI:0243"`
`static String`	`METHOD_REFERENCE`	Constant `METHOD_REFERENCE="method reference"`
`static String`	`METHOD_REFERENCE_MI`	Constant `METHOD_REFERENCE_MI="MI:0357"`
`static String`	`PRIMARY`	Constant `PRIMARY="primary-reference"`
`static String`	`PRIMARY_MI`	Constant `PRIMARY_MI="MI:0358"`
`static String`	`PUBMED`	Constant `PUBMED="pubmed"`
`static String`	`PUBMED_MI`	Constant `PUBMED_MI="MI:0446"`
`static String`	`REFSEQ`	Constant `REFSEQ="refseq"`
`static String`	`REFSEQ_MI`	Constant `REFSEQ_MI="MI:0481"`
`static String`	`RESID`	Constant `RESID="resid"`
`static String`	`RESID_MI`	Constant `RESID_MI="MI:0248"`
`static String`	`SECONDARY`	Constant `SECONDARY="secondary-ac"`
`static String`	`SECONDARY_MI`	Constant `SECONDARY_MI="MI:0360"`
`static String`	`SEE_ALSO`	Constant `SEE_ALSO="see-also"`
`static String`	`SEE_ALSO_MI`	Constant `SEE_ALSO_MI="MI:0361"`
`static String`	`SO`	Constant `SO="so"`
`static String`	`SO_MI`	Constant `SO_MI="MI:0601"`
`static String`	`UNIPROTKB`	Constant `UNIPROTKB="uniprotkb"`
`static String`	`UNIPROTKB_MI`	Constant `UNIPROTKB_MI="MI:0486"`
`static String`	`UNIPROTKB_SWISSPROT`	Constant `UNIPROTKB_SWISSPROT="swiss-prot"`
`static String`	`UNIPROTKB_SWISSPROT_MI`	Constant `UNIPROTKB_SWISSPROT_MI="MI:1098"`
`static String`	`UNIPROTKB_TREMBL`	Constant `UNIPROTKB_TREMBL="trembl"`
`static String`	`UNIPROTKB_TREMBL_MI`	Constant `UNIPROTKB_TREMBL_MI="MI:1099"`

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`CvTerm`	`getDatabase()`	The database is a controlled vocabulary term.
`String`	`getId()`	The identifier in the external database/resource.
`CvTerm`	`getQualifier()`	The qualifier of the xref is the reference type and is a controlled vocabulary term.
`String`	`getVersion()`	The version of the identifier in the database/resource if relevant.

- Field Detail
  - ENSEMBL
```
static final String ENSEMBL
```
    Constant ENSEMBL="ensembl"
    
    See Also:
    
    Constant Field Values
  - ENSEMBL_MI
```
static final String ENSEMBL_MI
```
    Constant ENSEMBL_MI="MI:0476"
    
    See Also:
    
    Constant Field Values
  - ENSEMBL_GENOMES
```
static final String ENSEMBL_GENOMES
```
    Constant ENSEMBL_GENOMES="ensemblgenomes"
    
    See Also:
    
    Constant Field Values
  - ENSEMBL_GENOMES_MI
```
static final String ENSEMBL_GENOMES_MI
```
    Constant ENSEMBL_GENOMES_MI="MI:1013"
    
    See Also:
    
    Constant Field Values
  - ENTREZ_GENE
```
static final String ENTREZ_GENE
```
    Constant ENTREZ_GENE="entrezgene/locuslink"
    
    See Also:
    
    Constant Field Values
  - ENTREZ_GENE_MI
```
static final String ENTREZ_GENE_MI
```
    Constant ENTREZ_GENE_MI="MI:0477"
    
    See Also:
    
    Constant Field Values
  - REFSEQ
```
static final String REFSEQ
```
    Constant REFSEQ="refseq"
    
    See Also:
    
    Constant Field Values
  - REFSEQ_MI
```
static final String REFSEQ_MI
```
    Constant REFSEQ_MI="MI:0481"
    
    See Also:
    
    Constant Field Values
  - CHEBI
```
static final String CHEBI
```
    Constant CHEBI="chebi"
    
    See Also:
    
    Constant Field Values
  - CHEBI_MI
```
static final String CHEBI_MI
```
    Constant CHEBI_MI="MI:0474"
    
    See Also:
    
    Constant Field Values
  - DDBJ_EMBL_GENBANK
```
static final String DDBJ_EMBL_GENBANK
```
    Constant DDBJ_EMBL_GENBANK="ddbj/embl/genbank"
    
    See Also:
    
    Constant Field Values
  - DDBJ_EMBL_GENBANK_MI
```
static final String DDBJ_EMBL_GENBANK_MI
```
    Constant DDBJ_EMBL_GENBANK_MI="MI:0475"
    
    See Also:
    
    Constant Field Values
  - UNIPROTKB
```
static final String UNIPROTKB
```
    Constant UNIPROTKB="uniprotkb"
    
    See Also:
    
    Constant Field Values
  - UNIPROTKB_MI
```
static final String UNIPROTKB_MI
```
    Constant UNIPROTKB_MI="MI:0486"
    
    See Also:
    
    Constant Field Values
  - UNIPROTKB_SWISSPROT
```
static final String UNIPROTKB_SWISSPROT
```
    Constant UNIPROTKB_SWISSPROT="swiss-prot"
    
    See Also:
    
    Constant Field Values
  - UNIPROTKB_SWISSPROT_MI
```
static final String UNIPROTKB_SWISSPROT_MI
```
    Constant UNIPROTKB_SWISSPROT_MI="MI:1098"
    
    See Also:
    
    Constant Field Values
  - UNIPROTKB_TREMBL
```
static final String UNIPROTKB_TREMBL
```
    Constant UNIPROTKB_TREMBL="trembl"
    
    See Also:
    
    Constant Field Values
  - UNIPROTKB_TREMBL_MI
```
static final String UNIPROTKB_TREMBL_MI
```
    Constant UNIPROTKB_TREMBL_MI="MI:1099"
    
    See Also:
    
    Constant Field Values
  - COMPLEX_PORTAL
```
static final String COMPLEX_PORTAL
```
    Constant COMPLEX_PORTAL="complex portal"
    
    See Also:
    
    Constant Field Values
  - COMPLEX_PORTAL_MI
```
static final String COMPLEX_PORTAL_MI
```
    Constant COMPLEX_PORTAL_MI="MI:2279
    
    See Also:
    
    Constant Field Values
  - IMEX
```
static final String IMEX
```
    Constant IMEX="imex"
    
    See Also:
    
    Constant Field Values
  - IMEX_MI
```
static final String IMEX_MI
```
    Constant IMEX_MI="MI:0670"
    
    See Also:
    
    Constant Field Values
  - PUBMED
```
static final String PUBMED
```
    Constant PUBMED="pubmed"
    
    See Also:
    
    Constant Field Values
  - PUBMED_MI
```
static final String PUBMED_MI
```
    Constant PUBMED_MI="MI:0446"
    
    See Also:
    
    Constant Field Values
  - DOI
```
static final String DOI
```
    Constant DOI="doi"
    
    See Also:
    
    Constant Field Values
  - DOI_MI
```
static final String DOI_MI
```
    Constant DOI_MI="MI:0574"
    
    See Also:
    
    Constant Field Values
  - INTERPRO
```
static final String INTERPRO
```
    Constant INTERPRO="interpro"
    
    See Also:
    
    Constant Field Values
  - INTERPRO_MI
```
static final String INTERPRO_MI
```
    Constant INTERPRO_MI="MI:0449"
    
    See Also:
    
    Constant Field Values
  - INTACT_MI
```
static final String INTACT_MI
```
    Constant INTACT_MI="MI:0469"
    
    See Also:
    
    Constant Field Values
  - COMPLEX_PRIMARY
```
static final String COMPLEX_PRIMARY
```
    Constant COMPLEX_PRIMARY="complex-primary"
    
    See Also:
    
    Constant Field Values
  - COMPLEX_PRIMARY_MI
```
static final String COMPLEX_PRIMARY_MI
```
    Constant COMPLEX_PRIMARY_MI="MI:2282"
    
    See Also:
    
    Constant Field Values
  - IMEX_PRIMARY
```
static final String IMEX_PRIMARY
```
    Constant IMEX_PRIMARY="imex-primary"
    
    See Also:
    
    Constant Field Values
  - IMEX_PRIMARY_MI
```
static final String IMEX_PRIMARY_MI
```
    Constant IMEX_PRIMARY_MI="MI:0662"
    
    See Also:
    
    Constant Field Values
  - IDENTITY
```
static final String IDENTITY
```
    Constant IDENTITY="identity"
    
    See Also:
    
    Constant Field Values
  - IDENTITY_MI
```
static final String IDENTITY_MI
```
    Constant IDENTITY_MI="MI:0356"
    
    See Also:
    
    Constant Field Values
  - SECONDARY
```
static final String SECONDARY
```
    Constant SECONDARY="secondary-ac"
    
    See Also:
    
    Constant Field Values
  - SECONDARY_MI
```
static final String SECONDARY_MI
```
    Constant SECONDARY_MI="MI:0360"
    
    See Also:
    
    Constant Field Values
  - PRIMARY
```
static final String PRIMARY
```
    Constant PRIMARY="primary-reference"
    
    See Also:
    
    Constant Field Values
  - PRIMARY_MI
```
static final String PRIMARY_MI
```
    Constant PRIMARY_MI="MI:0358"
    
    See Also:
    
    Constant Field Values
  - SEE_ALSO
```
static final String SEE_ALSO
```
    Constant SEE_ALSO="see-also"
    
    See Also:
    
    Constant Field Values
  - SEE_ALSO_MI
```
static final String SEE_ALSO_MI
```
    Constant SEE_ALSO_MI="MI:0361"
    
    See Also:
    
    Constant Field Values
  - GO
```
static final String GO
```
    Constant GO="go"
    
    See Also:
    
    Constant Field Values
  - GO_MI
```
static final String GO_MI
```
    Constant GO_MI="MI:0448"
    
    See Also:
    
    Constant Field Values
  - METHOD_REFERENCE
```
static final String METHOD_REFERENCE
```
    Constant METHOD_REFERENCE="method reference"
    
    See Also:
    
    Constant Field Values
  - METHOD_REFERENCE_MI
```
static final String METHOD_REFERENCE_MI
```
    Constant METHOD_REFERENCE_MI="MI:0357"
    
    See Also:
    
    Constant Field Values
  - RESID
```
static final String RESID
```
    Constant RESID="resid"
    
    See Also:
    
    Constant Field Values
  - RESID_MI
```
static final String RESID_MI
```
    Constant RESID_MI="MI:0248"
    
    See Also:
    
    Constant Field Values
  - SO
```
static final String SO
```
    Constant SO="so"
    
    See Also:
    
    Constant Field Values
  - SO_MI
```
static final String SO_MI
```
    Constant SO_MI="MI:0601"
    
    See Also:
    
    Constant Field Values
  - CHAIN_PARENT_MI
```
static final String CHAIN_PARENT_MI
```
    Constant CHAIN_PARENT_MI="MI:0951"
    
    See Also:
    
    Constant Field Values
  - CHAIN_PARENT
```
static final String CHAIN_PARENT
```
    Constant CHAIN_PARENT="chain-parent"
    
    See Also:
    
    Constant Field Values
  - ISOFORM_PARENT_MI
```
static final String ISOFORM_PARENT_MI
```
    Constant ISOFORM_PARENT_MI="MI:0243"
    
    See Also:
    
    Constant Field Values
  - ISOFORM_PARENT
```
static final String ISOFORM_PARENT
```
    Constant ISOFORM_PARENT="isoform-parent"
    
    See Also:
    
    Constant Field Values
  - INTERACTOR_SET_QUALIFIER
```
static final String INTERACTOR_SET_QUALIFIER
```
    Constant INTERACTOR_SET_QUALIFIER="set member"
    
    See Also:
    
    Constant Field Values
  - INTERACTOR_SET_QUALIFIER_MI
```
static final String INTERACTOR_SET_QUALIFIER_MI
```
    Constant INTERACTOR_SET_QUALIFIER_MI="MI:1341"
    
    See Also:
    
    Constant Field Values
- Method Detail
  - getDatabase
```
CvTerm getDatabase()
```
    The database is a controlled vocabulary term. It cannot be null.
    
    Returns:
    
    the database
  - getId
```
String getId()
```
    The identifier in the external database/resource. It cannot be null or empty.
    
    Returns:
    
    the database identifier
  - getVersion
```
String getVersion()
```
    The version of the identifier in the database/resource if relevant. It can be null if no versions have been specified
    
    Returns:
    
    the version
  - getQualifier
```
CvTerm getQualifier()
```
    The qualifier of the xref is the reference type and is a controlled vocabulary term. It can be null. If null, the Xref is giving unqualified information which is not an identifier (different from ExternalIdentifier) Ex: primary-reference, see-also, identity, method reference, ...
    
    Returns:
    
    the qualifier of the xref

Interface Xref

Field Summary

Method Summary

Field Detail

ENSEMBL

ENSEMBL_MI

ENSEMBL_GENOMES

ENSEMBL_GENOMES_MI

ENTREZ_GENE

ENTREZ_GENE_MI

REFSEQ

REFSEQ_MI

CHEBI

CHEBI_MI

DDBJ_EMBL_GENBANK

DDBJ_EMBL_GENBANK_MI

UNIPROTKB

UNIPROTKB_MI

UNIPROTKB_SWISSPROT

UNIPROTKB_SWISSPROT_MI

UNIPROTKB_TREMBL

UNIPROTKB_TREMBL_MI

COMPLEX_PORTAL

COMPLEX_PORTAL_MI

IMEX

IMEX_MI

PUBMED

PUBMED_MI

DOI

DOI_MI

INTERPRO

INTERPRO_MI

INTACT_MI

COMPLEX_PRIMARY

COMPLEX_PRIMARY_MI

IMEX_PRIMARY

IMEX_PRIMARY_MI

IDENTITY

IDENTITY_MI

SECONDARY

SECONDARY_MI

PRIMARY

PRIMARY_MI

SEE_ALSO

SEE_ALSO_MI

GO

GO_MI

METHOD_REFERENCE

METHOD_REFERENCE_MI

RESID

RESID_MI

SO

SO_MI

CHAIN_PARENT_MI

CHAIN_PARENT

ISOFORM_PARENT_MI

ISOFORM_PARENT

INTERACTOR_SET_QUALIFIER

INTERACTOR_SET_QUALIFIER_MI

Method Detail

getDatabase

getId

getVersion

getQualifier