/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package dev.inf;
import static com.hp.hpl.jena.sparql.sse.builders.BuilderLib.checkLength ;
import static com.hp.hpl.jena.sparql.sse.builders.BuilderLib.checkList ;
import static com.hp.hpl.jena.sparql.sse.builders.BuilderLib.checkNode ;
import org.apache.jena.atlas.iterator.Iter ;
import com.hp.hpl.jena.graph.Node ;
import com.hp.hpl.jena.sparql.sse.Item ;
import com.hp.hpl.jena.sparql.sse.ItemList ;
class TransGraphNode extends TransGraph<Node>
{
public static TransGraphNode build(Item item)
{
TransGraphNode tg = new TransGraphNode() ;
checkList(item) ;
ItemList list = item.getList() ;
list = list.cdr() ;
Iter<Item> xIter = Iter.iter(list.iterator()) ;
for ( Item x : xIter)
{
checkList(item) ;
ItemList pair = x.getList() ;
checkLength(2, pair, "Not a pair: "+pair.shortString()) ;
Item a = pair.get(0) ;
Item b = pair.get(1) ;
checkNode(a) ;
checkNode(b) ;
tg.add(a.getNode(), b.getNode()) ;
}
return tg ;
}
public Item asItem(String tag)
{
final Item top = Item.createList() ;
top.getList().add(Item.createSymbol(tag)) ;
LinkApply<Node> x = new LinkApply<Node>() {
@Override
public void apply(Node i, Node j)
{
Item pair = pair(i,j) ;
top.getList().add(pair) ;
// Make if BuilderTable compatible.
// item.getList().add(Item.createWord("row")) ;
//
// Item x = pair("sub", i) ;
// Item y = pair("super", j) ;
//
// item.getList().add(x) ;
// item.getList().add(y) ;
// top.getList().add(item) ;
}
private Item pair(Node x, Node y)
{
Item item = Item.createList() ;
item.getList().add(x) ;
item.getList().add(y) ;
return item ;
} } ;
super.linkApply(x) ;
return top ;
}
}