package hgtest;

import org.hypergraphdb.HGEnvironment;

import org.hypergraphdb.HGHandle;

import org.hypergraphdb.HGQuery;

import org.hypergraphdb.HGSearchResult;

import org.hypergraphdb.HGSortIndex;

import org.hypergraphdb.HyperGraph;

import org.hypergraphdb.HGQuery.hg;

import org.hypergraphdb.indexing.ByPartIndexer;

import org.hypergraphdb.indexing.CompositeIndexer;

import org.hypergraphdb.indexing.HGKeyIndexer;

import org.hypergraphdb.util.HGUtils;

public class VersionedBean

{

private String id;

private int ver;

public String getId()

{

return id;

}

public void setId(String id)

{

this.id = id;

}

public int getVer()

{

return ver;

}

public void setVer(int ver)

{

this.ver = ver;

}

public String toString()

{

return "[" + id + "," + ver + "]";

}

private static void add(HyperGraph graph, String id, int ver)

{

VersionedBean x = new VersionedBean();

x.setId(id);

x.setVer(ver);

graph.add(x);

}

@SuppressWarnings("unchecked")

public static void main(String [] argv)

{

String location = "c:/temp/hgtest";

HGUtils.dropHyperGraphInstance(location);

HyperGraph graph = HGEnvironment.get(location);

HGHandle type = graph.getTypeSystem().getTypeHandle(VersionedBean.class);

CompositeIndexer indexer = new CompositeIndexer(type, new HGKeyIndexer[]{ new ByPartIndexer(type, "id"),

new ByPartIndexer(type, "ver")});

graph.getIndexManager().register(indexer);

graph.getIndexManager().register(new ByPartIndexer(type, "ver"));

add(graph, "x", 1);

add(graph, "x", 10);

add(graph, "x", 5);

add(graph, "t", 10);

add(graph, "t", 2);

add(graph, "t", 9);

graph.close();

graph = HGEnvironment.get(location);

HGQuery query = HGQuery.make(graph, hg.and(hg.type(VersionedBean.class), hg.eq("ver", 9)));

/*HGSearchResult<HGHandle> L = */query.execute();

HGSortIndex idx = (HGSortIndex)graph.getIndexManager().getIndex(indexer);

HGSearchResult<HGHandle> scan = idx.scanKeys();

while (scan.hasNext())

{

System.out.println((Object)graph.get((HGHandle)idx.findFirst(scan.next())));

}

VersionedBean bean = new VersionedBean();

bean.setId("x");

bean.setVer(2);

HGSearchResult<HGHandle> rs = idx.findGT(indexer.getKey(graph, bean));

if (!rs.hasNext())

System.out.println("Oops, not found");

else

{

bean = graph.get(rs.next());

System.out.println("Found " + bean);

}

rs.close();

}

}