odata2-jpa-processor/jpa-core/src/main/java/org/apache/olingo/odata2/jpa/processor/core/jpql/JPQLJoinSelectSingleStatementBuilder.java [53:94]:
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    jpqlQuery.append(context.getSelectExpression()).append(JPQLStatement.DELIMITER.SPACE);
    jpqlQuery.append(JPQLStatement.KEYWORD.FROM).append(JPQLStatement.DELIMITER.SPACE);

    if (context.getJPAJoinClauses() != null && !context.getJPAJoinClauses().isEmpty()) {
      List<JPAJoinClause> joinClauseList = context.getJPAJoinClauses();
      JPAJoinClause joinClause = joinClauseList.get(0);
      String joinCondition = joinClause.getJoinCondition();
      joinWhereCondition = new StringBuilder();
      if (joinCondition != null) {
        joinWhereCondition.append(joinCondition);
      }
      String relationShipAlias = null;
      joinClause = joinClauseList.get(1);
      jpqlQuery.append(joinClause.getEntityName()).append(JPQLStatement.DELIMITER.SPACE);
      jpqlQuery.append(joinClause.getEntityAlias());

      int i = 1;
      int limit = joinClauseList.size();
      relationShipAlias = joinClause.getEntityAlias();
      while (i < limit) {
        jpqlQuery.append(JPQLStatement.DELIMITER.SPACE);
        jpqlQuery.append(JPQLStatement.KEYWORD.JOIN).append(JPQLStatement.DELIMITER.SPACE);

        joinClause = joinClauseList.get(i);
        jpqlQuery.append(relationShipAlias).append(JPQLStatement.DELIMITER.PERIOD);
        jpqlQuery.append(joinClause.getEntityRelationShip()).append(JPQLStatement.DELIMITER.SPACE);
        jpqlQuery.append(joinClause.getEntityRelationShipAlias());

        relationShipAlias = joinClause.getEntityRelationShipAlias();
        i++;

        joinCondition = joinClause.getJoinCondition();
        if (joinCondition != null) {
          joinWhereCondition.append(JPQLStatement.DELIMITER.SPACE + JPQLStatement.Operator.AND
              + JPQLStatement.DELIMITER.SPACE);

          joinWhereCondition.append(joinCondition);
        }

      }
    } else {
      throw ODataJPARuntimeException.throwException(ODataJPARuntimeException.JOIN_CLAUSE_EXPECTED, null);
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odata2-jpa-processor/jpa-core/src/main/java/org/apache/olingo/odata2/jpa/processor/core/jpql/JPQLJoinStatementBuilder.java [60:102]:
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      jpqlQuery.append(context.getSelectExpression()).append(JPQLStatement.DELIMITER.SPACE);
    }

    jpqlQuery.append(JPQLStatement.KEYWORD.FROM).append(JPQLStatement.DELIMITER.SPACE);

    if (context.getJPAJoinClauses() != null && !context.getJPAJoinClauses().isEmpty()) {
      List<JPAJoinClause> joinClauseList = context.getJPAJoinClauses();
      JPAJoinClause joinClause = joinClauseList.get(0);
      String joinCondition = joinClause.getJoinCondition();
      joinWhereCondition = new StringBuilder();
      if (joinCondition != null) {
        joinWhereCondition.append(joinCondition);
      }
      String relationShipAlias = null;
      joinClause = joinClauseList.get(1);
      jpqlQuery.append(joinClause.getEntityName()).append(JPQLStatement.DELIMITER.SPACE);
      jpqlQuery.append(joinClause.getEntityAlias());

      int i = 1;
      int limit = joinClauseList.size();
      relationShipAlias = joinClause.getEntityAlias();
      while (i < limit) {
        jpqlQuery.append(JPQLStatement.DELIMITER.SPACE);
        jpqlQuery.append(JPQLStatement.KEYWORD.JOIN).append(JPQLStatement.DELIMITER.SPACE);

        joinClause = joinClauseList.get(i);
        jpqlQuery.append(relationShipAlias).append(JPQLStatement.DELIMITER.PERIOD);
        jpqlQuery.append(joinClause.getEntityRelationShip()).append(JPQLStatement.DELIMITER.SPACE);
        jpqlQuery.append(joinClause.getEntityRelationShipAlias());

        relationShipAlias = joinClause.getEntityRelationShipAlias();
        i++;

        joinCondition = joinClause.getJoinCondition();
        if (joinCondition != null) {
          joinWhereCondition.append(JPQLStatement.DELIMITER.SPACE + JPQLStatement.Operator.AND
              + JPQLStatement.DELIMITER.SPACE);

          joinWhereCondition.append(joinCondition);
        }
      }
    } else {
      throw ODataJPARuntimeException.throwException(ODataJPARuntimeException.JOIN_CLAUSE_EXPECTED, null);
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