Пример #1
0
  @Override
  public From clone() {
    From clone = new From(this.parser, this.id);

    if (getClauses() != null) clone.setClauses(cloneList(getClauses()));

    return clone;
  }
  private QueryCommand buildSubquery(Expression projected) {
    Criteria criteria = null;
    for (ForeignKey fk : this.childTable.getForeignKeys()) {
      if (fk.getPrimaryKey().getParent().equals(this.parent)) {
        List<String> refColumns = fk.getReferenceColumns();
        if (refColumns == null) {
          refColumns = ODataSQLBuilder.getColumnNames(childTable.getPrimaryKey().getColumns());
        }

        List<String> pkColumns =
            ODataSQLBuilder.getColumnNames(parent.getPrimaryKey().getColumns());
        List<Criteria> critList = new ArrayList<Criteria>();

        for (int i = 0; i < refColumns.size(); i++) {
          critList.add(
              new CompareCriteria(
                  new ElementSymbol(pkColumns.get(i), this.parentGroup),
                  CompareCriteria.EQ,
                  new ElementSymbol(refColumns.get(i), this.childGroup)));
        }

        criteria = critList.get(0);
        for (int i = 1; i < critList.size(); i++) {
          criteria = new CompoundCriteria(CompoundCriteria.AND, criteria, critList.get(i));
        }
      }
    }
    Select s1 = new Select();
    s1.addSymbol(projected);
    From f1 = new From();
    f1.addGroup(this.childGroup);
    Query q1 = new Query();
    q1.setSelect(s1);
    q1.setFrom(f1);
    q1.setCriteria(criteria);

    return q1;
  }
 @Override
 public void visit(From obj) {
   preVisitVisitor(obj);
   visitNodes(obj.getClauses());
   postVisitVisitor(obj);
 }