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package org.molgenis.data.support;

import javax.annotation.CheckForNull;
import javax.annotation.Nullable;
import org.molgenis.data.Entity;
import org.molgenis.data.Query;
import org.molgenis.data.aggregation.AggregateQuery;
import org.molgenis.data.meta.model.Attribute;

public class AggregateQueryImpl implements AggregateQuery {
  private Attribute attrX;
  private Attribute attrY;
  private Attribute attrDistinct;
  private Query q;

  public AggregateQueryImpl() {}

  public AggregateQueryImpl(
      Attribute attrX, Attribute attrY, Attribute attrDistinct, Query q) {
    this.attrX = attrX;
    this.attrY = attrY;
    this.attrDistinct = attrDistinct;
    this.q = q;
  }

  public AggregateQueryImpl attrX(Attribute attrX) {
    this.attrX = attrX;
    return this;
  }

  public AggregateQueryImpl attrY(Attribute attrY) {
    this.attrY = attrY;
    return this;
  }

  public AggregateQueryImpl attrDistinct(Attribute attrDistinct) {
    this.attrDistinct = attrDistinct;
    return this;
  }

  public AggregateQueryImpl query(Query q) {
    this.q = q;
    return this;
  }

  public void setAttributeX(Attribute attrX) {
    this.attrX = attrX;
  }

  public void setAttributeY(Attribute attrY) {
    this.attrY = attrY;
  }

  public void setAttributeDistinct(Attribute attrDistinct) {
    this.attrDistinct = attrDistinct;
  }

  public void setQuery(Query q) {
    this.q = q;
  }

  @Nullable
  @CheckForNull
  @Override
  public Query getQuery() {
    return q;
  }

  @Nullable
  @CheckForNull
  @Override
  public Attribute getAttributeX() {
    return attrX;
  }

  @Nullable
  @CheckForNull
  @Override
  public Attribute getAttributeY() {
    return attrY;
  }

  @Nullable
  @CheckForNull
  @Override
  public Attribute getAttributeDistinct() {
    return attrDistinct;
  }

  @Override
  public int hashCode() {
    final int prime = 31;
    int result = 1;
    result = prime * result + ((attrDistinct == null) ? 0 : attrDistinct.hashCode());
    result = prime * result + ((attrX == null) ? 0 : attrX.hashCode());
    result = prime * result + ((attrY == null) ? 0 : attrY.hashCode());
    result = prime * result + ((q == null) ? 0 : q.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;
    AggregateQueryImpl other = (AggregateQueryImpl) obj;
    if (attrDistinct == null) {
      if (other.attrDistinct != null) return false;
    } else if (!attrDistinct.equals(other.attrDistinct)) return false;
    if (attrX == null) {
      if (other.attrX != null) return false;
    } else if (!attrX.equals(other.attrX)) return false;
    if (attrY == null) {
      if (other.attrY != null) return false;
    } else if (!attrY.equals(other.attrY)) return false;
    if (q == null) {
      if (other.q != null) return false;
    } else if (!q.equals(other.q)) return false;
    return true;
  }
}