org.normandra.orientdb.graph.OrientEdgeQuery.java Source code

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/*
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package org.normandra.orientdb.graph;

import com.orientechnologies.orient.core.record.impl.ODocument;
import org.apache.commons.lang.NullArgumentException;
import org.normandra.graph.Edge;
import org.normandra.graph.EdgeQuery;
import org.normandra.orientdb.data.OrientSelfClosingQuery;

import java.util.Iterator;

public class OrientEdgeQuery<T> implements EdgeQuery<T> {
    private final OrientGraph graph;

    private final OrientSelfClosingQuery delegate;

    public OrientEdgeQuery(final OrientGraph db, final OrientSelfClosingQuery query) {
        if (null == db) {
            throw new NullArgumentException("database");
        }
        if (null == query) {
            throw new NullArgumentException("query");
        }
        this.graph = db;
        this.delegate = query;
    }

    @Override
    public Iterator<Edge<T>> iterator() {
        final Iterator<ODocument> itr = this.delegate.iterator();
        return new Iterator<Edge<T>>() {
            @Override
            public boolean hasNext() {
                return itr.hasNext();
            }

            @Override
            public Edge next() {
                return graph.buildEdge(itr.next());
            }
        };
    }

    @Override
    public void close() throws Exception {
        this.delegate.close();
    }
}