GoogleMetadata (DSpace Kernel :: API and Implementation 6.4 API)

java.lang.Object
- org.dspace.app.util.GoogleMetadata

```
public class GoogleMetadata
extends Object
```
Configuration and mapping for Google Scholar output metadata

Author:

Sands Fish

Field Summary

Fields
Modifier and Type	Field and Description
`protected String`	`ABSTRACT`
`protected int`	`ALL_FIELDS_IN_OPTION`
`protected String`	`AUTHORS`
`protected String`	`CONFERENCE`
`protected String`	`DATE`
`protected String`	`DISSERTATION_ID`
`protected String`	`DISSERTATION_INSTITUTION`
`protected String`	`DISSERTATION_NAME`
`protected String`	`DOI`
`protected String`	`FIRSTPAGE`
`protected String`	`FULLTEXT`
`protected static String`	`GOOGLE_PREFIX`
`protected static Map<String,String>`	`googleScholarSettings`
`protected String`	`ISBN`
`protected String`	`ISSN`
`protected String`	`ISSUE`
`protected Item`	`item`
`protected ItemService`	`itemService`
`protected String`	`itemURL`
`protected String`	`JOURNAL_TITLE`
`protected String`	`KEYWORDS`
`protected String`	`LANGUAGE`
`protected String`	`LASTPAGE`
`protected com.google.common.collect.ListMultimap<String,String>`	`metadataMappings`
`protected int`	`MULTI`
`protected String`	`PATENT_COUNTRY`
`protected String`	`PATENT_ID`
`protected String`	`PATENT_NUMBER`
`protected String`	`PDF`
`protected String`	`PMID`
`protected String`	`PUBLISHER`
`protected int`	`SINGLE`
`protected String`	`TECH_REPORT_ID`
`protected String`	`TECH_REPORT_INSTITUTION`
`protected String`	`TECH_REPORT_NUMBER`
`protected String`	`TITLE`
`protected String`	`VOLUME`

Constructor Summary

Constructors
Constructor and Description

GoogleMetadata(Context context, Item item)
Wrap the item, parse all configured fields and generate metadata field values.

Constructors
Constructor and Description
`GoogleMetadata(Context context, Item item)` Wrap the item, parse all configured fields and generate metadata field values.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`protected void`	`addAggregateValues(String field, String delimiter)`
`protected void`	`addMultipleValues(String FIELD)` If metadata field contains multiple values, then add each value to the map separately
`protected boolean`	`addSingleField(String fieldName)` Add a single metadata value to the Google field, defaulting to the first-encountered instance of the field for this Item.
`protected String`	`buildFieldName(MetadataValue v)` Construct metadata field name out of Metadatum components
`List<org.jdom.Element>`	`disseminateList()` Produce meta elements that can easily be put into the head.
`protected Bitstream`	`findLinkableFulltext(Item item)` A bitstream is considered linkable fulltext when it is either the item's only bitstream (in the ORIGINAL bundle); or the primary bitstream Additionally, this bitstream must be publicly viewable.
`List<String>`	`getAbstractHTMLURL()`
`List<String>`	`getAuthors()`
`List<String>`	`getConference()`
`List<String>`	`getDate()`
`List<String>`	`getDissertationInstitution()`
`List<String>`	`getDissertationName()`
`List<String>`	`getDOI()`
`List<String>`	`getFirstpage()`
`List<String>`	`getFulltextHTMLURL()`
`List<String>`	`getISBN()`
`List<String>`	`getISSN()`
`List<String>`	`getIssue()`
`List<String>`	`getJournalTitle()`
`List<String>`	`getKeywords()`
`List<String>`	`getLanguage()`
`List<String>`	`getLastpage()`
`Collection<Map.Entry<String,String>>`	`getMappings()` Fetch retaining the order of the values for any given key in which they where added (like authors).
`List<String>`	`getPatentCountry()`
`List<String>`	`getPatentNumber()`
`protected String`	`getPDFSimpleUrl(Item item)` Gets the URL to a PDF using a very basic strategy by assuming that the PDF is in the default content bundle, and that the item only has one public bitstream and it is a PDF.
`List<String>`	`getPDFURL()`
`List<String>`	`getPmid()`
`List<String>`	`getPublisher()`
`List<String>`	`getTechnicalReportInstitution()`
`List<String>`	`getTechnicalReportNumber()`
`List<String>`	`getTitle()`
`List<String>`	`getVolume()`
`protected boolean`	`identifyItemType(String dConfig)` Identifies if this item matches a particular configuration of fields and values for those fields to identify the type based on a type- cataloging metadata practice.
`protected boolean`	`isPublic(Bitstream bitstream)`
`protected boolean`	`itemIsDissertation()` Determine, based on config values, if this item is a dissertation.
`protected boolean`	`itemIsPatent()` Determine, based on config values, if this item is a patent.
`protected boolean`	`itemIsTechReport()` Determine, based on config values, if this item is a tech report.
`static void`	`logConfiguration()` Dump Metadata field mapping to log
`protected String[]`	`parseComponents(String field)` Pull apart an individual field structure.
`protected ArrayList<String>`	`parseFields(String configString)` Build a Vector of fields that can be added to when expanding wildcards.
`protected void`	`parseItem()` Using metadata field mappings contained in the loaded configuration, parse through configured metadata fields, building valid Google metadata value strings.
`protected ArrayList<ArrayList<String>>`	`parseOptions(String configFilter)` Parse first-match path of metadata field-group options for the given configuration.
`protected ArrayList<String>`	`parseWildcard(String field)` Expand any wildcard characters to an array of all matching fields for this item.
`protected ArrayList<MetadataValue>`	`resolveMetadata(String configFilter, int returnType)` Aggregate an array of DCValues present on the current item that pass the configuration filter.
`protected MetadataValue`	`resolveMetadataField(String configFilter)` A singular version of resolveMetadata to return only one field value instead of an aggregate.
`protected ArrayList<MetadataValue>`	`resolveMetadataFields(String configFilter)` A plural version of resolveMetadata for aggregate fields.

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

- Field Detail
  - GOOGLE_PREFIX
```
protected static final String GOOGLE_PREFIX
```
    See Also:
    
    Constant Field Values
  - itemService
```
protected ItemService itemService
```
  - item
```
protected Item item
```
  - itemURL
```
protected String itemURL
```
  - googleScholarSettings
```
protected static Map<String,String> googleScholarSettings
```
  - metadataMappings
```
protected com.google.common.collect.ListMultimap<String,String> metadataMappings
```
  - TITLE
```
protected final String TITLE
```
    See Also:
    
    Constant Field Values
  - JOURNAL_TITLE
```
protected final String JOURNAL_TITLE
```
    See Also:
    
    Constant Field Values
  - PUBLISHER
```
protected final String PUBLISHER
```
    See Also:
    
    Constant Field Values
  - AUTHORS
```
protected final String AUTHORS
```
    See Also:
    
    Constant Field Values
  - DATE
```
protected final String DATE
```
    See Also:
    
    Constant Field Values
  - VOLUME
```
protected final String VOLUME
```
    See Also:
    
    Constant Field Values
  - ISSUE
```
protected final String ISSUE
```
    See Also:
    
    Constant Field Values
  - FIRSTPAGE
```
protected final String FIRSTPAGE
```
    See Also:
    
    Constant Field Values
  - LASTPAGE
```
protected final String LASTPAGE
```
    See Also:
    
    Constant Field Values
  - DOI
```
protected final String DOI
```
    See Also:
    
    Constant Field Values
  - PMID
```
protected final String PMID
```
    See Also:
    
    Constant Field Values
  - ABSTRACT
```
protected final String ABSTRACT
```
    See Also:
    
    Constant Field Values
  - FULLTEXT
```
protected final String FULLTEXT
```
    See Also:
    
    Constant Field Values
  - PDF
```
protected final String PDF
```
    See Also:
    
    Constant Field Values
  - ISSN
```
protected final String ISSN
```
    See Also:
    
    Constant Field Values
  - ISBN
```
protected final String ISBN
```
    See Also:
    
    Constant Field Values
  - LANGUAGE
```
protected final String LANGUAGE
```
    See Also:
    
    Constant Field Values
  - KEYWORDS
```
protected final String KEYWORDS
```
    See Also:
    
    Constant Field Values
  - CONFERENCE
```
protected final String CONFERENCE
```
    See Also:
    
    Constant Field Values
  - DISSERTATION_ID
```
protected final String DISSERTATION_ID
```
    See Also:
    
    Constant Field Values
  - DISSERTATION_NAME
```
protected final String DISSERTATION_NAME
```
    See Also:
    
    Constant Field Values
  - DISSERTATION_INSTITUTION
```
protected final String DISSERTATION_INSTITUTION
```
    See Also:
    
    Constant Field Values
  - PATENT_ID
```
protected final String PATENT_ID
```
    See Also:
    
    Constant Field Values
  - PATENT_NUMBER
```
protected final String PATENT_NUMBER
```
    See Also:
    
    Constant Field Values
  - PATENT_COUNTRY
```
protected final String PATENT_COUNTRY
```
    See Also:
    
    Constant Field Values
  - TECH_REPORT_ID
```
protected final String TECH_REPORT_ID
```
    See Also:
    
    Constant Field Values
  - TECH_REPORT_NUMBER
```
protected final String TECH_REPORT_NUMBER
```
    See Also:
    
    Constant Field Values
  - TECH_REPORT_INSTITUTION
```
protected final String TECH_REPORT_INSTITUTION
```
    See Also:
    
    Constant Field Values
  - SINGLE
```
protected final int SINGLE
```
    See Also:
    
    Constant Field Values
  - MULTI
```
protected final int MULTI
```
    See Also:
    
    Constant Field Values
  - ALL_FIELDS_IN_OPTION
```
protected final int ALL_FIELDS_IN_OPTION
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - GoogleMetadata
```
public GoogleMetadata(Context context,
                      Item item)
               throws SQLException
```
    Wrap the item, parse all configured fields and generate metadata field values.
    
    Parameters:
    
    context - context
    
    item - The item being viewed to extract metadata from
    
    Throws:
    
    SQLException - if database error
- Method Detail
  - logConfiguration
```
public static void logConfiguration()
```
    Dump Metadata field mapping to log
  - addSingleField
```
protected boolean addSingleField(String fieldName)
```
    Add a single metadata value to the Google field, defaulting to the first-encountered instance of the field for this Item.
    
    Parameters:
    
    fieldName -
    
    Returns:
    
    successful?
  - resolveMetadataField
```
protected MetadataValue resolveMetadataField(String configFilter)
```
    A singular version of resolveMetadata to return only one field value instead of an aggregate.
    
    Parameters:
    
    configFilter -
    
    Returns:
    
    The first configured match of metadata field for the item.
  - resolveMetadataFields
```
protected ArrayList<MetadataValue> resolveMetadataFields(String configFilter)
```
    A plural version of resolveMetadata for aggregate fields.
    
    Parameters:
    
    configFilter -
    
    Returns:
    
    Aggregate of all matching metadata fields configured in the first option field-set to return any number of filter matches.
  - resolveMetadata
```
protected ArrayList<MetadataValue> resolveMetadata(String configFilter,
                                                   int returnType)
```
    Aggregate an array of DCValues present on the current item that pass the configuration filter.
    
    Parameters:
    
    configFilter -
    
    returnType -
    
    Returns:
    
    Array of configuration to item-field matches
  - parseOptions
```
protected ArrayList<ArrayList<String>> parseOptions(String configFilter)
```
    Parse first-match path of metadata field-group options for the given configuration.
    
    Parameters:
    
    configFilter -
    
    Returns:
    
    array of parsed options or null
  - parseFields
```
protected ArrayList<String> parseFields(String configString)
```
    Build a Vector of fields that can be added to when expanding wildcards.
    
    Parameters:
    
    configString - - Value of one metadata field configuration
    
    Returns:
    
    A vector of raw field configurations.
  - parseComponents
```
protected String[] parseComponents(String field)
```
    Pull apart an individual field structure.
    
    Parameters:
    
    field - The configured field for one metadata field map
    
    Returns:
    
    Schema, Element, Qualifier of metadata field
  - parseWildcard
```
protected ArrayList<String> parseWildcard(String field)
```
    Expand any wildcard characters to an array of all matching fields for this item. No order consistency is implied.
    
    Parameters:
    
    field - The field identifier containing a wildcard character.
    
    Returns:
    
    Expanded field list.
  - buildFieldName
```
protected String buildFieldName(MetadataValue v)
```
    Construct metadata field name out of Metadatum components
    
    Parameters:
    
    v - The Metadatum to construct a name for.
    
    Returns:
    
    The complete metadata field name.
  - parseItem
```
protected void parseItem()
```
    Using metadata field mappings contained in the loaded configuration, parse through configured metadata fields, building valid Google metadata value strings. Field names and values contained in metadataMappings.
  - getMappings
```
public Collection<Map.Entry<String,String>> getMappings()
```
    Fetch retaining the order of the values for any given key in which they where added (like authors). Usage: GoogleMetadata gmd = new GoogleMetadata(item); for(Entry<String, String> mapping : googlemd.getMappings()) ...
    
    Returns:
    
    Iterable of metadata fields mapped to Google-formatted values
  - disseminateList
```
public List<org.jdom.Element> disseminateList()
```
    Produce meta elements that can easily be put into the head.
    
    Returns:
    
    List of elements
  - getTitle
```
public List<String> getTitle()
```
    Returns:
    
    the citation_title
  - getJournalTitle
```
public List<String> getJournalTitle()
```
    Returns:
    
    the citation_journal_title
  - getPublisher
```
public List<String> getPublisher()
```
    Returns:
    
    the citation_publisher
  - getAuthors
```
public List<String> getAuthors()
```
    Returns:
    
    the citation_authors
  - getDate
```
public List<String> getDate()
```
    Returns:
    
    the citation_date
  - getVolume
```
public List<String> getVolume()
```
    Returns:
    
    the citation_volume
  - getIssue
```
public List<String> getIssue()
```
    Returns:
    
    the citation_issue
  - getFirstpage
```
public List<String> getFirstpage()
```
    Returns:
    
    the citation_firstpage
  - getLastpage
```
public List<String> getLastpage()
```
    Returns:
    
    the citation_lastpage
  - getDOI
```
public List<String> getDOI()
```
    Returns:
    
    the citation_doi
  - getPmid
```
public List<String> getPmid()
```
    Returns:
    
    the citation_pmid
  - getAbstractHTMLURL
```
public List<String> getAbstractHTMLURL()
```
    Returns:
    
    the citation_abstract_html_url
  - getFulltextHTMLURL
```
public List<String> getFulltextHTMLURL()
```
    Returns:
    
    the citation_fulltext_html_url
  - getPDFURL
```
public List<String> getPDFURL()
```
    Returns:
    
    the citation_pdf_url
  - getISSN
```
public List<String> getISSN()
```
    Returns:
    
    the citation_issn
  - getISBN
```
public List<String> getISBN()
```
    Returns:
    
    the citation_isbn
  - getLanguage
```
public List<String> getLanguage()
```
    Returns:
    
    the citation_language
  - getKeywords
```
public List<String> getKeywords()
```
    Returns:
    
    the citation_keywords
  - getConference
```
public List<String> getConference()
```
    Returns:
    
    the citation_conference
  - getDissertationName
```
public List<String> getDissertationName()
```
    Returns:
    
    the citation_dissertation_name
  - getDissertationInstitution
```
public List<String> getDissertationInstitution()
```
    Returns:
    
    the citation_dissertation_institution
  - getPatentNumber
```
public List<String> getPatentNumber()
```
    Returns:
    
    the citation_patent_number
  - getPatentCountry
```
public List<String> getPatentCountry()
```
    Returns:
    
    the citation_patent_country
  - getTechnicalReportNumber
```
public List<String> getTechnicalReportNumber()
```
    Returns:
    
    the citation_technical_report_number
  - getTechnicalReportInstitution
```
public List<String> getTechnicalReportInstitution()
```
    Returns:
    
    the citation_technical_report_institution
  - getPDFSimpleUrl
```
protected String getPDFSimpleUrl(Item item)
```
    Gets the URL to a PDF using a very basic strategy by assuming that the PDF is in the default content bundle, and that the item only has one public bitstream and it is a PDF.
    
    Parameters:
    
    item -
    
    Returns:
    
    URL that the PDF can be directly downloaded from
  - findLinkableFulltext
```
protected Bitstream findLinkableFulltext(Item item)
                                  throws SQLException
```
    A bitstream is considered linkable fulltext when it is either
    - the item's only bitstream (in the ORIGINAL bundle); or
    - the primary bitstream
    Additionally, this bitstream must be publicly viewable.
    Parameters:
    
    item -
    
    Returns:
    
    a linkable bitstream or null if none found
    
    Throws:
    
    SQLException - if database error
  - isPublic
```
protected boolean isPublic(Bitstream bitstream)
```
  - addAggregateValues
```
protected void addAggregateValues(String field,
                                  String delimiter)
```
    Parameters:
    
    field - to aggregate all values of in a matching option
    
    delimiter - to delimit field values with
  - addMultipleValues
```
protected void addMultipleValues(String FIELD)
```
    If metadata field contains multiple values, then add each value to the map separately
    
    Parameters:
    
    FIELD -
  - itemIsDissertation
```
protected boolean itemIsDissertation()
```
    Determine, based on config values, if this item is a dissertation.
    
    Returns:
    
    boolean
  - itemIsPatent
```
protected boolean itemIsPatent()
```
    Determine, based on config values, if this item is a patent.
    
    Returns:
    
    boolean
  - itemIsTechReport
```
protected boolean itemIsTechReport()
```
    Determine, based on config values, if this item is a tech report.
    
    Returns:
    
    boolean
  - identifyItemType
```
protected boolean identifyItemType(String dConfig)
```
    Identifies if this item matches a particular configuration of fields and values for those fields to identify the type based on a type- cataloging metadata practice.
    
    Parameters:
    
    dConfig -
    
    Returns:
    
    item matches configuration

Class GoogleMetadata

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

GOOGLE_PREFIX

itemService

item

itemURL

googleScholarSettings

metadataMappings

TITLE

JOURNAL_TITLE

PUBLISHER

AUTHORS

DATE

VOLUME

ISSUE

FIRSTPAGE

LASTPAGE

DOI

PMID

ABSTRACT

FULLTEXT

PDF

ISSN

ISBN

LANGUAGE

KEYWORDS

CONFERENCE

DISSERTATION_ID

DISSERTATION_NAME

DISSERTATION_INSTITUTION

PATENT_ID

PATENT_NUMBER

PATENT_COUNTRY

TECH_REPORT_ID

TECH_REPORT_NUMBER

TECH_REPORT_INSTITUTION

SINGLE

MULTI

ALL_FIELDS_IN_OPTION

Constructor Detail

GoogleMetadata

Method Detail

logConfiguration

addSingleField

resolveMetadataField

resolveMetadataFields

resolveMetadata

parseOptions

parseFields

parseComponents

parseWildcard

buildFieldName

parseItem

getMappings

disseminateList

getTitle

getJournalTitle

getPublisher

getAuthors

getDate

getVolume

getIssue

getFirstpage

getLastpage

getDOI

getPmid

getAbstractHTMLURL

getFulltextHTMLURL

getPDFURL

getISSN

getISBN

getLanguage

getKeywords

getConference

getDissertationName

getDissertationInstitution