it.unibz.inf.ontop.utils

Class R2RMLIRISafeEncoder

java.lang.Object

it.unibz.inf.ontop.utils.R2RMLIRISafeEncoder

public class R2RMLIRISafeEncoder
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static com.google.common.collect.ImmutableMap<String,String>	TABLE This table is used for IRI safe encoding according to

Constructor Summary

Constructors

Constructor and Description
R2RMLIRISafeEncoder()

Method Summary

Modifier and Type	Method and Description
static String	decode(String encodedURI) Given a string representing a URI, this method will return a new String in which all percent encoded characters (e.g., %20) will be restored to their original characters (e.g., ' ').
static String	encode(String pe)

Methods inherited from class java.lang.Object

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

Field Detail

TABLE

public static final com.google.common.collect.ImmutableMap<String,String> TABLE

This table is used for IRI safe encoding according to

R2RML

The IRI-safe version of a string is obtained by applying the following transformation to any character that is not in the iunreserved production in [RFC3987]:

• Convert the character to a sequence of one or more octets using UTF-8 [RFC3629]
• Percent-encode each octet [RFC3986]

RFC 3987 2.2. ABNF for IRI References and IRIs

 iunreserved = ALPHA / DIGIT / "-" / "." / "_" / "~" / ucschar
 ucschar  = %xA0-D7FF / %xF900-FDCF / %xFDF0-FFEF
            / %x10000-1FFFD / %x20000-2FFFD / %x30000-3FFFD
            / %x40000-4FFFD / %x50000-5FFFD / %x60000-6FFFD
            / %x70000-7FFFD / %x80000-8FFFD / %x90000-9FFFD
            / %xA0000-AFFFD / %xB0000-BFFFD / %xC0000-CFFFD
            / %xD0000-DFFFD / %xE1000-EFFFD
 

We only implement the encoding for the range of basic latin ( - ) for performance reason. Other symbols outside of `iunreserved` are mostly control symbols. NB: it is important to place "%" to be beginning if we implement the encoding by a sequence of replacements.

Constructor Detail

R2RMLIRISafeEncoder

public R2RMLIRISafeEncoder()

Method Detail

encode

public static String encode(String pe)

decode

public static String decode(String encodedURI)

Given a string representing a URI, this method will return a new String in which all percent encoded characters (e.g., %20) will be restored to their original characters (e.g., ' '). This is necessary to transform some URIs into the original database values.