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NQuadTripleCallback.java
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NQuadTripleCallback.java
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package com.github.jsonldjava.impl;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import com.github.jsonldjava.core.JSONLDTripleCallback;
public class NQuadTripleCallback extends JSONLDTripleCallback {
private List<String> lines = new ArrayList<String>();
@Override
public void triple(String s, String p, String o, String graph) {
String quad = "";
if (s.startsWith("_:")) {
quad += s;
} else {
quad += "<" + s + ">";
}
quad += " <" + p + "> " ;
if (o.startsWith("_:")) {
quad += o;
} else {
quad += "<" + o + ">";
}
if (graph != null) {
quad += " <" + graph + ">";
}
quad += " .";
lines.add(quad);
}
@Override
public void triple(String s, String p, String value, String datatype,
String language, String graph) {
String quad = "";
if (s.startsWith("_:")) {
quad += s;
} else {
quad += "<" + s + ">";
}
quad += " <" + p + "> " ;
String escaped = value
.replaceAll("\\\\", "\\\\\\\\")
.replaceAll("\\t", "\\\\t")
.replaceAll("\\n", "\\\\n")
.replaceAll("\\r", "\\\\r")
.replaceAll("\\\"", "\\\\\"");
quad += "\"" + escaped + "\"";
if (datatype != null && !"http://www.w3.org/2001/XMLSchema#string".equals(datatype)) {
quad += "^^<" + datatype + ">";
} else if (language != null) {
quad += "@" + language;
}
if (graph != null) {
quad += " <" + graph + ">";
}
quad += " .";
lines.add(quad);
}
public String getResult() {
String result = "";
Collections.sort(lines);
for (int i = 0; i < lines.size(); i++) {
result += lines.get(i);
if (i < lines.size()-1) {
result += "\n";
}
}
return result;
}
}