GenericIndicator.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2020 Lluis Turró Cutiller <http://www.turro.org/>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
package org.turro.indicator;
 
import java.util.stream.Stream;
import org.turro.annotation.ElephantIndicator;
import org.turro.contacts.db.ContactsPU;
import org.turro.elephant.db.WhereClause;
import org.turro.jpa.Dao;
import org.turro.matching.GenericMatching;
import org.turro.matching.GenericSiblings;
import org.turro.matching.IMatching;
import org.turro.path.Path;
import org.turro.ranking.GenericRanking;
import org.turro.ranking.IRanking;
 
@ElephantIndicator
public class GenericIndicator extends AbstractIndicator {
 
  public GenericIndicator() {
    root = "generic";
  }
 
  @Override
  protected void initVariables() {
    addVariable("stars", true, VariableType.BOTH_VARIABLE);
    addVariable("comments", true, VariableType.BOTH_VARIABLE);
  }
 
  @Override
  protected void initExternalVariables() {
  }
 
  @Override
  protected Dao createDao() {
    return new ContactsPU();
  }
 
  @Override
  protected void processRankingVariable(Dao dao, IPreprocessor preprocessor, IndicatorVariable variable, String entityRoot) {
    WhereClause wc = null;
    switch(variable.getName()) {
      case "stars":
        wc = PreprocessClause.load("StarIt")
                .setRankingRoot(entityRoot)
                .setRankingField("path")
                .setVariable(variable)
                .setAggregate("avg(stars)")
                .getClause();
        break;
      case "comments":
        wc = PreprocessClause.load("CommentIt")
                .setRankingRoot(entityRoot)
                .setRankingField("path")
                .setVariable(variable)
                .setAggregate("count(id)")
                .getClause();
        break;
    }
    if(wc != null) {
      try(Stream<GenericRanking> stream = dao.stream(GenericRanking.class, wc, 1000)) {
        stream.forEach(r -> {
          preprocessor.poolInstance(r.copyTo((IRanking) preprocessor.createInstance()));
        });
        preprocessor.finishPreprocessor();
      }
    }
  }
 
  @Override
  protected void processMatchingVariable(Dao dao, IPreprocessor preprocessor, IndicatorVariable variable, String entityRoot, String relatedRoot) {
    WhereClause wc = null;
    if("contact".equals(relatedRoot)) {
      switch(variable.getName()) {
        case "stars":
          wc = PreprocessClause.load("StarIt")
                  .setRankingRoot(entityRoot)
                  .setMatchingRoot(relatedRoot)
                  .setRankingField("path")
                  .setMatchingField("creator.id")
                  .setVariable(variable)
                  .setAggregate("avg(stars)")
                  .getClause();
          break;
        case "comments":
          wc = PreprocessClause.load("CommentIt")
                  .setRankingRoot(entityRoot)
                  .setMatchingRoot(relatedRoot)
                  .setRankingField("path")
                  .setMatchingField("creator.id")
                  .setVariable(variable)
                  .setAggregate("count(id)")
                  .getClause();
          break;
      }
    }
    if(wc != null) {
      try(Stream<GenericMatching> stream = dao.stream(GenericMatching.class, wc, 1000)) {
        stream.forEach(r -> {
          preprocessor.poolInstance(r.copyTo((IMatching) preprocessor.createInstance()));
        });
        preprocessor.finishPreprocessor();
      }
    }
  }
 
  @Override
  public Stream<GenericSiblings> getSiblingPaths(String entityPath) {
    Path path = new Path(entityPath);
    if("contact".equals(path.getRoot())) {
      WhereClause wc = new WhereClause();
      wc.addClause("select new org.turro.matching.GenericSiblings(concat('/contact/', br.contact.id), concat('/contact/', br2.contact.id))");
      wc.addClause("from BusinessRelation br, BusinessRelation br2");
      wc.addClause("where br.business.id = br2.business.id");
      wc.addClause("and br.business.inactive = false");
      wc.addClause("and br.business.deactivated = false");
      return createDao().stream(GenericSiblings.class, wc);
    }
    return null;
  }
 
  @Override
  public Stream<String> getEntityPaths(String entityRoot) {
    Path path = new Path(entityRoot);
    if("contact".equals(path.getRoot())) {
      return createDao().stream(String.class, "select concat('/contact/', id) from Contact");
    }
    return null;
  }
  
}