Synonyms.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.elephant.entities.db;
 
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import javax.persistence.Column;
import javax.persistence.ElementCollection;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import org.turro.string.Strings;
import org.turro.elephant.db.ElephantPU;
import org.turro.elephant.db.SQLHelper;
import org.turro.elephant.db.WhereClause;
import org.turro.jpa.Dao;
import org.turro.sql.SQLUtil;
 
@Entity
public class Synonyms implements java.io.Serializable {
 
  @Id
  @GeneratedValue(strategy=GenerationType.IDENTITY)
  @Column(name="IDENTIFIER")
  private Long id;
  
  @ElementCollection(fetch=FetchType.EAGER)
  private Set<String> words = new HashSet<>();
 
  public Long getId() {
    return id;
  }
 
  public void setId(Long id) {
    this.id = id;
  }
 
  public Set<String> getWords() {
    return words;
  }
 
  public void setWords(Set<String> words) {
    this.words = words;
  }
  
  /* Helpers */
  
  public boolean isEmpty() {
    return words.isEmpty();
  }
  
  public String getWordsString() {
    return String.join(",", words);
  }
  
  /* Statics */
  
  public static List<Synonyms> getSynonymsByWords(String phrase) {
    ArrayList<Synonyms> synonyms = new ArrayList<>();
    if(!Strings.isBlank(phrase)) {
      for(String word : phrase.split("\\s+")) {
        synonyms.addAll(getSynonyms(new ElephantPU(), word));
      }
    }
    return synonyms;
  }
  
  public static List<Synonyms> getSynonyms(String word) {
    return getSynonyms(new ElephantPU(), word);
  }
  
  public static List<Synonyms> getSynonyms(String word, int max) {
    return getSynonyms(new ElephantPU(), word, max);
  }
  
  public static List<Synonyms> getSynonyms(Dao dao, String word) {
    return getSynonyms(dao, word, SQLUtil.MAX_SYNONIMS + 1);
  }
 
  public static List<Synonyms> getSynonyms(Dao dao, String word, int max) {
    WhereClause wc = new WhereClause();
    wc.addClause("select s from Synonyms s");
    wc.addClause("left join s.words w");
    wc.addClause("where w like :word");
    wc.addNamedValue("word", SQLHelper.convertToLike(word));
    return max == 0 ? dao.getResultList(wc) : dao.getResultList(wc, max);
  }
  
}