Examples of org.hibernate.hql.QueryTranslatorFactory

org.hibernate.hql.QueryTranslatorFactory
Facade for generation of {@link QueryTranslator} and {@link FilterTranslator} instances. @author Gavin King

    translators = new QueryTranslator[length];
    List sqlStringList = new ArrayList();
    for ( int i=0; i<length; i++ ) {
      if ( collectionRole == null ) {
        Settings settings = factory.getSettings();
        QueryTranslatorFactory queryTranslatorFactory = settings.getQueryTranslatorFactory();
        translators[i] = queryTranslatorFactory
            .createQueryTranslator( hql, concreteQueryStrings[i], enabledFilters, factory );
        Map replacements = factory.getSettings().getQuerySubstitutions();
        /**
         * 以下のcompileメソッドで全ての本質的な動作が行われている。
         * statementExecutorがコンパイル後のSQLを格納していることがわかっている。

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    compileWithAstQueryTranslator("from Animal where zoo is null", false);
  }


  private void compileWithAstQueryTranslator(String hql, boolean scalar) {
    Map replacements = new HashMap();
    QueryTranslatorFactory ast = new ASTQueryTranslatorFactory();
    SessionFactoryImplementor factory = getSessionFactoryImplementor();
    QueryTranslator newQueryTranslator = ast.createQueryTranslator( hql, hql, Collections.EMPTY_MAP, factory );
    newQueryTranslator.compile( replacements, scalar );
  }

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  protected void runClassicTranslator(String hql) throws Exception {
    SessionFactoryImplementor factory = getSessionFactoryImplementor();
    Map replacements = new HashMap();
    QueryTranslator oldQueryTranslator = null;
    try {
      QueryTranslatorFactory classic = new ClassicQueryTranslatorFactory();
      oldQueryTranslator = classic.createQueryTranslator( hql, hql, Collections.EMPTY_MAP, factory );
      oldQueryTranslator.compile( replacements, false );
    }
    catch ( Exception e ) {
      e.printStackTrace();
      throw e;

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    // steve -> note that the empty maps here represent the currently enabled filters...
    QueryTranslator oldQueryTranslator = null;
    Exception oldException = null;
    try {
      System.out.println("Compiling with classic QueryTranslator...");
      QueryTranslatorFactory classic = new ClassicQueryTranslatorFactory();
      oldQueryTranslator = classic.createQueryTranslator( hql, hql, Collections.EMPTY_MAP, factory );
      oldQueryTranslator.compile( replacements, scalar );
    }
    catch ( QueryException e ) {
      oldException = e;
    }

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    SessionFactoryImplementor factory = getSessionFactoryImplementor();
    return createNewQueryTranslator( hql, replacements, scalar, factory );
  }


  private QueryTranslatorImpl createNewQueryTranslator(String hql, Map replacements, boolean scalar, SessionFactoryImplementor factory) {
    QueryTranslatorFactory ast = new ASTQueryTranslatorFactory();
    QueryTranslatorImpl newQueryTranslator = ( QueryTranslatorImpl ) ast.createQueryTranslator( hql, hql, Collections.EMPTY_MAP, factory );
    newQueryTranslator.compile( replacements, scalar );
    return newQueryTranslator;
  }

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    QueryTranslator newQueryTranslator;
    Map replacements = null;
    Exception newException = null;
    SessionFactoryImplementor factory = getSessionFactoryImplementor();
    try {
      QueryTranslatorFactory ast = new ASTQueryTranslatorFactory();
      newQueryTranslator = ast.createQueryTranslator( hql, hql, Collections.EMPTY_MAP, factory );
      newQueryTranslator.compile( replacements, scalar );
    }
    catch ( QueryException e ) {
      newException = e;
    }

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  // Private


  private void assertEjbqlEqualsHql(String ejbql, String hql) {
    QueryTranslatorFactory ast = new ASTQueryTranslatorFactory();


    QueryTranslator queryTranslator = ast.createQueryTranslator( hql, hql, Collections.EMPTY_MAP, sfi() );
    queryTranslator.compile( Collections.EMPTY_MAP, true );
    String hqlSql = queryTranslator.getSQLString();


    queryTranslator = ast.createQueryTranslator( ejbql, ejbql, Collections.EMPTY_MAP, sfi() );
    queryTranslator.compile( Collections.EMPTY_MAP, true );
    String ejbqlSql = queryTranslator.getSQLString();


    assertEquals( hqlSql, ejbqlSql );
  }

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    assertEquals( hqlSql, ejbqlSql );
  }


  private QueryTranslatorImpl compile(String input) {
    QueryTranslatorFactory ast = new ASTQueryTranslatorFactory();
    QueryTranslator queryTranslator = ast.createQueryTranslator( input, input, Collections.EMPTY_MAP, sfi() );
    queryTranslator.compile( Collections.EMPTY_MAP, true );


    return ( QueryTranslatorImpl ) queryTranslator;
  }

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    return ast;
  }


  private String toSql(String hql) {
    QueryTranslatorFactory ast = new ASTQueryTranslatorFactory();
    QueryTranslator queryTranslator = ast.createQueryTranslator( hql, hql, Collections.EMPTY_MAP, sfi() );
    queryTranslator.compile( Collections.EMPTY_MAP, true );
    return queryTranslator.getSQLString();
  }

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    compileWithAstQueryTranslator("from Animal where zoo is null", false);
  }


  private void compileWithAstQueryTranslator(String hql, boolean scalar) {
    Map replacements = new HashMap();
    QueryTranslatorFactory ast = new ASTQueryTranslatorFactory();
    SessionFactoryImplementor factory = getSessionFactoryImplementor();
    QueryTranslator newQueryTranslator = ast.createQueryTranslator( hql, hql, Collections.EMPTY_MAP, factory );
    newQueryTranslator.compile( replacements, scalar );
  }

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org.hibernate.engine.query.HQLQueryPlan

org.hibernate.test.hql.CriteriaClassicAggregationReturnTest

org.hibernate.test.hql.CriteriaHQLAlignmentTest

org.hibernate.test.hql.EJBQLTest

org.hibernate.test.hql.HQLTest

org.hibernate.test.hql.QueryTranslatorTestCase

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