From 5be5fd3daa0d50980fb3791e904e035cdbca254f Mon Sep 17 00:00:00 2001
From: RncLsn <rnc.lsn@gmail.com>
Date: Thu, 7 May 2015 19:26:24 +0100
Subject: Making the output machine-readable (JSON).

---
 src/uk/ac/ox/cs/pagoda/query/AnswerTuple.java | 41 ++++++++++++++++++++-------
 1 file changed, 31 insertions(+), 10 deletions(-)

(limited to 'src/uk/ac/ox/cs/pagoda/query/AnswerTuple.java')

diff --git a/src/uk/ac/ox/cs/pagoda/query/AnswerTuple.java b/src/uk/ac/ox/cs/pagoda/query/AnswerTuple.java
index 8d7e0b1..183cbe1 100644
--- a/src/uk/ac/ox/cs/pagoda/query/AnswerTuple.java
+++ b/src/uk/ac/ox/cs/pagoda/query/AnswerTuple.java
@@ -1,13 +1,10 @@
 package uk.ac.ox.cs.pagoda.query;
 
-import java.util.HashMap;
-import java.util.Map;
-
+import com.google.gson.*;
 import org.semanticweb.HermiT.model.Constant;
 import org.semanticweb.HermiT.model.Individual;
 import org.semanticweb.HermiT.model.Term;
 import org.semanticweb.HermiT.model.Variable;
-
 import uk.ac.ox.cs.JRDFox.JRDFStoreException;
 import uk.ac.ox.cs.JRDFox.model.Datatype;
 import uk.ac.ox.cs.JRDFox.model.GroundTerm;
@@ -15,6 +12,10 @@ import uk.ac.ox.cs.JRDFox.model.Literal;
 import uk.ac.ox.cs.JRDFox.store.TupleIterator;
 import uk.ac.ox.cs.pagoda.util.Namespace;
 
+import java.lang.reflect.Type;
+import java.util.HashMap;
+import java.util.Map;
+
 public class AnswerTuple {
 	
 	public static final String SEPARATOR = "\t";
@@ -40,17 +41,21 @@ public class AnswerTuple {
 		m_tuple = new GroundTerm[arity]; 
 		for (int i = 0; i < arity; ++i) m_tuple[i] = sup.m_tuple[i]; 
 	}
+
+	private AnswerTuple(String m_str) {
+		this.m_str = m_str;
+	}
 	
 	public int getArity() {
 		return m_tuple.length; 
 	}
 
 	public int hashCode() {
-//		return toString().hashCode();
-		int code = 0; 
-		for (int i = 0; i < m_tuple.length; ++i)
-			code = code * 1997 + m_tuple[i].hashCode();
-		return code; 
+		return toString().hashCode();
+//		int code = 0;
+//		for (int i = 0; i < m_tuple.length; ++i)
+//			code = code * 1997 + m_tuple[i].hashCode();
+//		return code;
 	}
 	
 	public boolean equals(Object obj) {
@@ -131,5 +136,21 @@ public class AnswerTuple {
 		if (length == extendedTuple.getArity()) return extendedTuple;
 		else return new AnswerTuple(extendedTuple, length); 
 	}
-	
+
+
+	public static class AnswerTupleSerializer implements JsonSerializer<AnswerTuple> {
+
+		public JsonElement serialize(AnswerTuple src, Type typeOfSrc, JsonSerializationContext context) {
+			return new JsonPrimitive(src.toString());
+		}
+
+	}
+
+	public class AnswerTupleDeserializer implements JsonDeserializer<AnswerTuple> {
+		public AnswerTuple deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
+				throws JsonParseException {
+			return new AnswerTuple(json.getAsJsonPrimitive().getAsString());
+		}
+	}
+
 }
-- 
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