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package org.aksw.jenax.arq.aggregation;

import java.util.Set;

import org.aksw.jenax.arq.util.quad.QuadPatternUtils;
import org.apache.jena.sparql.core.DatasetGraph;
import org.apache.jena.sparql.core.QuadPattern;
import org.apache.jena.sparql.core.Var;

public class AggDatasetGraph
    implements Agg
{
    public QuadPattern quadPattern;

    public AggDatasetGraph(QuadPattern quadPattern) {
        super();
        this.quadPattern = quadPattern;
    }

    @Override
    public AccDatasetGraph createAccumulator() {
        AccDatasetGraph result = new AccDatasetGraph(quadPattern);
        return result;
    }

    @Override
    public Set getDeclaredVars() {
        Set result = QuadPatternUtils.getVarsMentioned(quadPattern);
//        QuadPatternUtils.
//        QuadUtils.var
//        OpQuadBlock op = new OpQuadBlock(quadPattern);
//        Collection vars = OpVars.mentionedVars(op);
//        Set result = SetUtils.asSet(vars);
        return result;
    }

    public static AggDatasetGraph create(QuadPattern quadPattern) {
        AggDatasetGraph result = new AggDatasetGraph(quadPattern);
        return result;
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((quadPattern == null) ? 0 : quadPattern.hashCode());
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (getClass() != obj.getClass())
            return false;
        AggDatasetGraph other = (AggDatasetGraph) obj;
        if (quadPattern == null) {
            if (other.quadPattern != null)
                return false;
        } else if (!quadPattern.equals(other.quadPattern))
            return false;
        return true;
    }

    @Override
    public String toString() {
        return "AggGraph [template=" + quadPattern + "]";
    }
}