com.epimorphics.jsonrdf

Class RDFUtil

java.lang.Object

com.epimorphics.jsonrdf.RDFUtil

public class RDFUtil
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	RDFUtil.Vocab

Field Summary

Fields

Modifier and Type	Field and Description
static Pattern	matchTimeZone
static String	RDFPlainLiteral

Constructor Summary

Constructors

Constructor and Description
RDFUtil()

Method Summary

Methods

Modifier and Type	Method and Description
static List<com.hp.hpl.jena.rdf.model.RDFNode>	asJavaList(com.hp.hpl.jena.rdf.model.Resource l) Answer the Java list rooted at l, but if the list is incomplete, just deliver the existing elements.
protected static SimpleDateFormat	dateFormat() xsdDateFormat returns a SimpleDateFormat in "EEE, d MMM yyyy HH:mm:ss 'GMT'Z" form, with the timezone set to GMT.
static SimpleDateFormat	dateFormat(boolean keepZone, boolean dropTime)
static String	formatDateTime(com.hp.hpl.jena.rdf.model.Literal l) Convert an xsd:datetype or xsd:date to a javascript compatible string.
static String	getLexicalForm(com.hp.hpl.jena.rdf.model.RDFNode value) Return the lexical form of a node.
static String	getStringValue(com.hp.hpl.jena.rdf.model.Resource r, com.hp.hpl.jena.rdf.model.Property p) Return one of the values of the property on the resource in string form.
static String	getStringValue(com.hp.hpl.jena.rdf.model.Resource r, com.hp.hpl.jena.rdf.model.Property p, String defaultValue) Return one of the values of the property on the resource in string form.
static boolean	isList(com.hp.hpl.jena.rdf.model.RDFNode l) Answer true if v is a list, which here is defined to be "a resource which is nil or has an rdf:first or is of type rdf:List".
static boolean	looksLikeURI(String s)
static com.hp.hpl.jena.rdf.model.Literal	parseDateTime(String lex, String type) Convert an javascript date string to an xsd:datetime or xsd:date.
protected static SimpleDateFormat	xsdDateFormat() xsdDateFormat returns a SimpleDateFormat in yyyy-MM-dd form.

Methods inherited from class java.lang.Object

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

Field Detail

RDFPlainLiteral

public static final String RDFPlainLiteral

matchTimeZone

public static final Pattern matchTimeZone

Constructor Detail

RDFUtil

public RDFUtil()

Method Detail

getStringValue

public static String getStringValue(com.hp.hpl.jena.rdf.model.Resource r,
                    com.hp.hpl.jena.rdf.model.Property p,
                    String defaultValue)

Return one of the values of the property on the resource in string form. If there are no values return the defaultValue. If the value is not a String but is a literal return its lexical form. If it is a resource return its URI.

getStringValue

public static String getStringValue(com.hp.hpl.jena.rdf.model.Resource r,
                    com.hp.hpl.jena.rdf.model.Property p)

Return one of the values of the property on the resource in string form. If there are no values return null.

getLexicalForm

public static String getLexicalForm(com.hp.hpl.jena.rdf.model.RDFNode value)

Return the lexical form of a node. This is the lexical form of a literal, the URI of a URIResource or the annonID of a bNode.

asJavaList

public static List<com.hp.hpl.jena.rdf.model.RDFNode> asJavaList(com.hp.hpl.jena.rdf.model.Resource l)

Answer the Java list rooted at l, but if the list is incomplete, just deliver the existing elements.

isList

public static boolean isList(com.hp.hpl.jena.rdf.model.RDFNode l)

Answer true if v is a list, which here is defined to be "a resource which is nil or has an rdf:first or is of type rdf:List".

xsdDateFormat

protected static SimpleDateFormat xsdDateFormat()

xsdDateFormat returns a SimpleDateFormat in yyyy-MM-dd form. Note that synchronisation issues mean that we can't have a single shared constant -- it has mutable state.

dateFormat

protected static SimpleDateFormat dateFormat()

xsdDateFormat returns a SimpleDateFormat in "EEE, d MMM yyyy HH:mm:ss 'GMT'Z" form, with the timezone set to GMT. Note that synchronisation issues mean that we can't have a single shared constant -- it has mutable state.

dateFormat

public static SimpleDateFormat dateFormat(boolean keepZone,
                          boolean dropTime)

formatDateTime

public static String formatDateTime(com.hp.hpl.jena.rdf.model.Literal l)

Convert an xsd:datetype or xsd:date to a javascript compatible string. Returns null if not a supported type

parseDateTime

public static com.hp.hpl.jena.rdf.model.Literal parseDateTime(String lex,
                                              String type)
                                                       throws ParseException

Convert an javascript date string to an xsd:datetime or xsd:date. Dancing around to ensure that we can construct zoneless times (going via Date forcibly introduces a timezone, which we eliminate by turning it into an xsd:dateTime lexical form).

Throws:

ParseException

looksLikeURI

public static boolean looksLikeURI(String s)