org.dspace.app.itemupdate

Class MetadataUtilities

java.lang.Object

org.dspace.app.itemupdate.MetadataUtilities

public class MetadataUtilities
extends Object

Miscellaneous methods for metadata handling that build on the API which might have general utility outside of the specific use in context in ItemUpdate. The XML methods were based on those in ItemImport

Field Summary

Fields

Modifier and Type	Field and Description
protected static ItemService	itemService

Constructor Summary

Constructors

Constructor and Description
MetadataUtilities()

Method Summary

Methods

Modifier and Type	Method and Description
static void	appendMetadata(Context context, Item item, org.dspace.app.itemupdate.DtoMetadata dtom, boolean isLanguageStrict, String textToAppend) Append text to value metadata field to item
static boolean	deleteMetadataByValue(Context context, Item item, org.dspace.app.itemupdate.DtoMetadata dtom, boolean isLanguageStrict) Working around Item API to delete a value-specific Metadatum For a given element/qualifier/lang: get all DCValues clear (i.e.
static String	getCompoundForm(String schema, String element, String qualifier)
static String	getDCValueString(MetadataValue dcv) Get display of Metadatum
static List<org.dspace.app.itemupdate.DtoMetadata>	loadDublinCore(DocumentBuilder docBuilder, InputStream is) Modification of method from ItemImporter.loadDublinCore as a Factory method
static String[]	parseCompoundForm(String compoundForm) Parses metadata field given in the form .[.|.*] checks for correct number of elements (2 or 3) and for empty strings
static List<ContentsEntry>	readContentsFile(File f) Rewrite of ItemImport's functionality but just the parsing of the file, not the processing of its elements.
static List<String>	readDeleteContentsFile(File f)
static void	writeDocument(Document doc, Transformer transformer, OutputStream out) write xml document to output stream
static Document	writeDublinCore(DocumentBuilder docBuilder, List<org.dspace.app.itemupdate.DtoMetadata> dtomList) Write dublin_core.xml

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

itemService

protected static final ItemService itemService

Constructor Detail

MetadataUtilities

public MetadataUtilities()

Method Detail

deleteMetadataByValue

public static boolean deleteMetadataByValue(Context context,
                            Item item,
                            org.dspace.app.itemupdate.DtoMetadata dtom,
                            boolean isLanguageStrict)
                                     throws SQLException

Working around Item API to delete a value-specific Metadatum For a given element/qualifier/lang: get all DCValues clear (i.e. delete) all of these DCValues add them back, minus the one to actually delete

Parameters:

item -

dtom -

isLanguageStrict - -

Returns:

true if metadata field is found with matching value and was deleted

Throws:

SQLException

appendMetadata

public static void appendMetadata(Context context,
                  Item item,
                  org.dspace.app.itemupdate.DtoMetadata dtom,
                  boolean isLanguageStrict,
                  String textToAppend)
                           throws IllegalArgumentException,
                                  SQLException

Append text to value metadata field to item

Parameters:

item -

dtom -

isLanguageStrict -

textToAppend -

Throws:

IllegalArgumentException - - When target metadata field is not found

SQLException

loadDublinCore

public static List<org.dspace.app.itemupdate.DtoMetadata> loadDublinCore(DocumentBuilder docBuilder,
                                                         InputStream is)
                                                                  throws SQLException,
                                                                         IOException,
                                                                         ParserConfigurationException,
                                                                         SAXException,
                                                                         TransformerException,
                                                                         AuthorizeException

Modification of method from ItemImporter.loadDublinCore as a Factory method

Parameters:

docBuilder - -

is - - InputStream of dublin_core.xml

Returns:

list of DtoMetadata representing the metadata fields relating to an Item

Throws:

SQLException

IOException

ParserConfigurationException

SAXException

TransformerException

AuthorizeException

writeDublinCore

public static Document writeDublinCore(DocumentBuilder docBuilder,
                       List<org.dspace.app.itemupdate.DtoMetadata> dtomList)
                                throws ParserConfigurationException,
                                       TransformerConfigurationException,
                                       TransformerException

Write dublin_core.xml

Parameters:

docBuilder -

dtomList -

Returns:

xml document

Throws:

ParserConfigurationException

TransformerConfigurationException

TransformerException

writeDocument

public static void writeDocument(Document doc,
                 Transformer transformer,
                 OutputStream out)
                          throws IOException,
                                 TransformerException

write xml document to output stream

Parameters:

doc -

transformer -

out -

Throws:

IOException

TransformerException

readContentsFile

public static List<ContentsEntry> readContentsFile(File f)
                                            throws FileNotFoundException,
                                                   IOException,
                                                   ParseException

Rewrite of ItemImport's functionality but just the parsing of the file, not the processing of its elements.

Throws:

FileNotFoundException

IOException

ParseException

readDeleteContentsFile

public static List<String> readDeleteContentsFile(File f)
                                           throws FileNotFoundException,
                                                  IOException

Parameters:

f -

Throws:

FileNotFoundException

IOException

getDCValueString

public static String getDCValueString(MetadataValue dcv)

Get display of Metadatum

Parameters:

dcv -

Returns:

string displaying elements of the Metadatum

getCompoundForm

public static String getCompoundForm(String schema,
                     String element,
                     String qualifier)

Returns:

a String representation of the two- or three-part form of a metadata element e.g. dc.identifier.uri

parseCompoundForm

public static String[] parseCompoundForm(String compoundForm)
                                  throws ParseException

Parses metadata field given in the form .[.|.*] checks for correct number of elements (2 or 3) and for empty strings

Returns:

String Array

Throws:

ParseException - if validity checks fail