Package org.apache.hadoop.hbase.security.visibility.expression

Examples of org.apache.hadoop.hbase.security.visibility.expression.NonLeafExpressionNode

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      }
      if (!top.isSingleNode() && ((NonLeafExpressionNode) top).getChildExps().size() != 1) {
        throw new ParseException("Error parsing expression " + expS + " at column : " + index);
      }
    }
    expStack.push(new NonLeafExpressionNode(Operator.NOT));
  }
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      getLabelOrdinals(node, labelOrdinals, auths, checkAuths, ordinalProvider);
      writeLabelOrdinalsToStream(labelOrdinals, dos);
      tags.add(new Tag(VISIBILITY_TAG_TYPE, baos.toByteArray()));
      baos.reset();
    } else {
      NonLeafExpressionNode nlNode = (NonLeafExpressionNode) node;
      if (nlNode.getOperator() == Operator.OR) {
        for (ExpressionNode child : nlNode.getChildExps()) {
          getLabelOrdinals(child, labelOrdinals, auths, checkAuths, ordinalProvider);
          writeLabelOrdinalsToStream(labelOrdinals, dos);
          tags.add(new Tag(VISIBILITY_TAG_TYPE, baos.toByteArray()));
          baos.reset();
          labelOrdinals.clear();
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    assertEquals("abc", ((LeafExpressionNode) node).getIdentifier());

    // a&b|c&d -> (((a & b) | c) & )
    node = parser.parse("a&b|c&d");
    assertTrue(node instanceof NonLeafExpressionNode);
    NonLeafExpressionNode nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("d", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    assertEquals(Operator.OR, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("c", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("b", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertEquals("a", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());

    // (a) -> (a)
    node = parser.parse("(a)");
    assertTrue(node instanceof LeafExpressionNode);
    assertEquals("a", ((LeafExpressionNode) node).getIdentifier());

    // (a&b) -> (a & b)
    node = parser.parse(" ( a & b )");
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("a", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());
    assertEquals("b", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());

    // ((((a&b)))) -> (a & b)
    node = parser.parse("((((a&b))))");
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("a", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());
    assertEquals("b", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());

    // (a|b)&(cc|def) -> ((a | b) & (cc | def))
    node = parser.parse("( a | b ) & (cc|def)");
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    assertTrue(nlNode.getChildExps().get(1) instanceof NonLeafExpressionNode);
    NonLeafExpressionNode nlNodeLeft = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    NonLeafExpressionNode nlNodeRight = (NonLeafExpressionNode) nlNode.getChildExps().get(1);
    assertEquals(Operator.OR, nlNodeLeft.getOperator());
    assertEquals(2, nlNodeLeft.getChildExps().size());
    assertEquals("a", ((LeafExpressionNode) nlNodeLeft.getChildExps().get(0)).getIdentifier());
    assertEquals("b", ((LeafExpressionNode) nlNodeLeft.getChildExps().get(1)).getIdentifier());
    assertEquals(Operator.OR, nlNodeRight.getOperator());
    assertEquals(2, nlNodeRight.getChildExps().size());
    assertEquals("cc", ((LeafExpressionNode) nlNodeRight.getChildExps().get(0)).getIdentifier());
    assertEquals("def", ((LeafExpressionNode) nlNodeRight.getChildExps().get(1)).getIdentifier());

    // a&(cc|de) -> (a & (cc | de))
    node = parser.parse("a&(cc|de)");
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("a", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(1) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(1);
    assertEquals(Operator.OR, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("cc", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());
    assertEquals("de", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());

    // (a&b)|c -> ((a & b) | c)
    node = parser.parse("(a&b)|c");
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.OR, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("c", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("a", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());
    assertEquals("b", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());

    // (a&b&c)|d -> (((a & b) & c) | d)
    node = parser.parse("(a&b&c)|d");
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.OR, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("d", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("c", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("b", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertEquals("a", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());

    // a&(b|(c|d)) -> (a & (b | (c | d)))
    node = parser.parse("a&(b|(c|d))");
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("a", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(1) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(1);
    assertEquals(Operator.OR, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("b", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(1) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(1);
    assertEquals(Operator.OR, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("c", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());
    assertEquals("d", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());

    // (!a) -> (!a)
    node = parser.parse("(!a)");
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.NOT, nlNode.getOperator());
    assertEquals("a", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());

    // a&(!b) -> (a & (!b))
    node = parser.parse("a&(!b)");
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("a", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(1) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(1);
    assertEquals(Operator.NOT, nlNode.getOperator());
    assertEquals(1, nlNode.getChildExps().size());
    assertEquals("b", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());

    // !a&b -> ((!a) & b)
    node = parser.parse("!a&b");
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("b", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    assertEquals(Operator.NOT, nlNode.getOperator());
    assertEquals(1, nlNode.getChildExps().size());
    assertEquals("a", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());

    // !a&(!b) -> ((!a) & (!b))
    node = parser.parse("!a&(!b)");
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    assertTrue(nlNode.getChildExps().get(1) instanceof NonLeafExpressionNode);
    nlNodeLeft = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    nlNodeRight = (NonLeafExpressionNode) nlNode.getChildExps().get(1);
    assertEquals(Operator.NOT, nlNodeLeft.getOperator());
    assertEquals(1, nlNodeLeft.getChildExps().size());
    assertEquals("a", ((LeafExpressionNode) nlNodeLeft.getChildExps().get(0)).getIdentifier());
    assertEquals(Operator.NOT, nlNodeRight.getOperator());
    assertEquals(1, nlNodeRight.getChildExps().size());
    assertEquals("b", ((LeafExpressionNode) nlNodeRight.getChildExps().get(0)).getIdentifier());

    // !a&!b -> ((!a) & (!b))
    node = parser.parse("!a&!b");
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    assertTrue(nlNode.getChildExps().get(1) instanceof NonLeafExpressionNode);
    nlNodeLeft = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    nlNodeRight = (NonLeafExpressionNode) nlNode.getChildExps().get(1);
    assertEquals(Operator.NOT, nlNodeLeft.getOperator());
    assertEquals(1, nlNodeLeft.getChildExps().size());
    assertEquals("a", ((LeafExpressionNode) nlNodeLeft.getChildExps().get(0)).getIdentifier());
    assertEquals(Operator.NOT, nlNodeRight.getOperator());
    assertEquals(1, nlNodeRight.getChildExps().size());
    assertEquals("b", ((LeafExpressionNode) nlNodeRight.getChildExps().get(0)).getIdentifier());

    // !(a&b) -> (!(a & b))
    node = parser.parse("!(a&b)");
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.NOT, nlNode.getOperator());
    assertEquals(1, nlNode.getChildExps().size());
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("a", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());
    assertEquals("b", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());

    // a&!b -> (a & (!b))
    node = parser.parse("a&!b");
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("a", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(1) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(1);
    assertEquals(Operator.NOT, nlNode.getOperator());
    assertEquals(1, nlNode.getChildExps().size());
    assertEquals("b", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());

    // !((a|b)&!(c&!b)) -> (!((a | b) & (!(c & (!b)))))
    node = parser.parse("!((a | b) & !(c & !b))");
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.NOT, nlNode.getOperator());
    assertEquals(1, nlNode.getChildExps().size());
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    assertTrue(nlNode.getChildExps().get(1) instanceof NonLeafExpressionNode);
    nlNodeLeft = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    nlNodeRight = (NonLeafExpressionNode) nlNode.getChildExps().get(1);
    assertEquals(Operator.OR, nlNodeLeft.getOperator());
    assertEquals("a", ((LeafExpressionNode) nlNodeLeft.getChildExps().get(0)).getIdentifier());
    assertEquals("b", ((LeafExpressionNode) nlNodeLeft.getChildExps().get(1)).getIdentifier());
    assertEquals(Operator.NOT, nlNodeRight.getOperator());
    assertEquals(1, nlNodeRight.getChildExps().size());
    nlNodeRight = (NonLeafExpressionNode) nlNodeRight.getChildExps().get(0);
    assertEquals(Operator.AND, nlNodeRight.getOperator());
    assertEquals(2, nlNodeRight.getChildExps().size());
    assertEquals("c", ((LeafExpressionNode) nlNodeRight.getChildExps().get(0)).getIdentifier());
    assertTrue(nlNodeRight.getChildExps().get(1) instanceof NonLeafExpressionNode);
    nlNodeRight = (NonLeafExpressionNode) nlNodeRight.getChildExps().get(1);
    assertEquals(Operator.NOT, nlNodeRight.getOperator());
    assertEquals(1, nlNodeRight.getChildExps().size());
    assertEquals("b", ((LeafExpressionNode) nlNodeRight.getChildExps().get(0)).getIdentifier());
  }
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  public void testNonAsciiCases() throws Exception {
    ExpressionNode node = parser.parse(CellVisibility.quote("\u0027") + "&"
        + CellVisibility.quote("\u002b") + "|" + CellVisibility.quote("\u002d") + "&"
        + CellVisibility.quote("\u003f"));
    assertTrue(node instanceof NonLeafExpressionNode);
    NonLeafExpressionNode nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("\u003f", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    assertEquals(Operator.OR, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("\u002d", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("\u002b", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertEquals("\u0027", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());

    node = parser.parse(CellVisibility.quote("\u0027") + "&" + CellVisibility.quote("\u002b") + "|"
        + CellVisibility.quote("\u002d") + "&" + CellVisibility.quote("\u003f"));
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("\u003f", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    assertEquals(Operator.OR, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("\u002d", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("\u002b", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertEquals("\u0027", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());
  }
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    } catch (ParseException e) {
    }
    node = parser.parse(CellVisibility.quote("\u0027") + "&" + CellVisibility.quote("\"") + "|"
        + CellVisibility.quote("\u002b" + "&" + "\u003f"));
    assertTrue(node instanceof NonLeafExpressionNode);
    NonLeafExpressionNode nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.OR, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("\u002b" + "&" + "\u003f",
        ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("\"", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertEquals("\u0027", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());
    try {
      node = parser.parse(CellVisibility.quote("\u0027&\\") + "|"
          + CellVisibility.quote("\u002b" + "&" + "\\") + CellVisibility.quote("$$\""));
      fail("Excpetion must be thrown as there is not operator");
    } catch (ParseException e) {
    }
    node = parser.parse(CellVisibility.quote("\u0027" + "&" + "\\") + "|"
        + CellVisibility.quote("\u003f" + "&" + "\\") + "&" + CellVisibility.quote("$$\""));
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("$$\"", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    assertEquals(Operator.OR, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("\u0027" + "&" + "\\",
        ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());
    assertEquals("\u003f" + "&" + "\\",
        ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    try {
      node = parser.parse(CellVisibility.quote("\u002b&\\") + "|" + CellVisibility.quote("\u0027&\\") + "&"
          + "\"$$");
      fail("Excpetion must be thrown as there is no end quote");
    } catch (ParseException e) {
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      } else {
        labels.add(((LeafExpressionNode) node).getIdentifier());
      }
    } else {
      // A non leaf expression of labels with & operator.
      NonLeafExpressionNode nlNode = (NonLeafExpressionNode) node;
      assert nlNode.getOperator() == Operator.AND;
      List<ExpressionNode> childExps = nlNode.getChildExps();
      for (ExpressionNode child : childExps) {
        extractLabels(child, labels, notLabels);
      }
    }
  }
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      } else {
        labels.add(((LeafExpressionNode) node).getIdentifier());
      }
    } else {
      // A non leaf expression of labels with & operator.
      NonLeafExpressionNode nlNode = (NonLeafExpressionNode) node;
      assert nlNode.getOperator() == Operator.AND;
      List<ExpressionNode> childExps = nlNode.getChildExps();
      for (ExpressionNode child : childExps) {
        extractLabels(child, labels, notLabels);
      }
    }
  }
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    assertEquals("abc", ((LeafExpressionNode) node).getIdentifier());

    // a&b|c&d -> (((a & b) | c) & )
    node = parser.parse("a&b|c&d");
    assertTrue(node instanceof NonLeafExpressionNode);
    NonLeafExpressionNode nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("d", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    assertEquals(Operator.OR, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("c", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("b", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertEquals("a", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());

    // (a) -> (a)
    node = parser.parse("(a)");
    assertTrue(node instanceof LeafExpressionNode);
    assertEquals("a", ((LeafExpressionNode) node).getIdentifier());

    // (a&b) -> (a & b)
    node = parser.parse(" ( a & b )");
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("a", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());
    assertEquals("b", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());

    // ((((a&b)))) -> (a & b)
    node = parser.parse("((((a&b))))");
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("a", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());
    assertEquals("b", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());

    // (a|b)&(cc|def) -> ((a | b) & (cc | def))
    node = parser.parse("( a | b ) & (cc|def)");
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    assertTrue(nlNode.getChildExps().get(1) instanceof NonLeafExpressionNode);
    NonLeafExpressionNode nlNodeLeft = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    NonLeafExpressionNode nlNodeRight = (NonLeafExpressionNode) nlNode.getChildExps().get(1);
    assertEquals(Operator.OR, nlNodeLeft.getOperator());
    assertEquals(2, nlNodeLeft.getChildExps().size());
    assertEquals("a", ((LeafExpressionNode) nlNodeLeft.getChildExps().get(0)).getIdentifier());
    assertEquals("b", ((LeafExpressionNode) nlNodeLeft.getChildExps().get(1)).getIdentifier());
    assertEquals(Operator.OR, nlNodeRight.getOperator());
    assertEquals(2, nlNodeRight.getChildExps().size());
    assertEquals("cc", ((LeafExpressionNode) nlNodeRight.getChildExps().get(0)).getIdentifier());
    assertEquals("def", ((LeafExpressionNode) nlNodeRight.getChildExps().get(1)).getIdentifier());

    // a&(cc|de) -> (a & (cc | de))
    node = parser.parse("a&(cc|de)");
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("a", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(1) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(1);
    assertEquals(Operator.OR, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("cc", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());
    assertEquals("de", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());

    // (a&b)|c -> ((a & b) | c)
    node = parser.parse("(a&b)|c");
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.OR, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("c", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("a", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());
    assertEquals("b", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());

    // (a&b&c)|d -> (((a & b) & c) | d)
    node = parser.parse("(a&b&c)|d");
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.OR, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("d", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("c", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("b", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertEquals("a", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());

    // a&(b|(c|d)) -> (a & (b | (c | d)))
    node = parser.parse("a&(b|(c|d))");
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("a", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(1) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(1);
    assertEquals(Operator.OR, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("b", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(1) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(1);
    assertEquals(Operator.OR, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("c", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());
    assertEquals("d", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());

    // (!a) -> (!a)
    node = parser.parse("(!a)");
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.NOT, nlNode.getOperator());
    assertEquals("a", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());

    // a&(!b) -> (a & (!b))
    node = parser.parse("a&(!b)");
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("a", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(1) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(1);
    assertEquals(Operator.NOT, nlNode.getOperator());
    assertEquals(1, nlNode.getChildExps().size());
    assertEquals("b", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());

    // !a&b -> ((!a) & b)
    node = parser.parse("!a&b");
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("b", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    assertEquals(Operator.NOT, nlNode.getOperator());
    assertEquals(1, nlNode.getChildExps().size());
    assertEquals("a", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());

    // !a&(!b) -> ((!a) & (!b))
    node = parser.parse("!a&(!b)");
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    assertTrue(nlNode.getChildExps().get(1) instanceof NonLeafExpressionNode);
    nlNodeLeft = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    nlNodeRight = (NonLeafExpressionNode) nlNode.getChildExps().get(1);
    assertEquals(Operator.NOT, nlNodeLeft.getOperator());
    assertEquals(1, nlNodeLeft.getChildExps().size());
    assertEquals("a", ((LeafExpressionNode) nlNodeLeft.getChildExps().get(0)).getIdentifier());
    assertEquals(Operator.NOT, nlNodeRight.getOperator());
    assertEquals(1, nlNodeRight.getChildExps().size());
    assertEquals("b", ((LeafExpressionNode) nlNodeRight.getChildExps().get(0)).getIdentifier());

    // !a&!b -> ((!a) & (!b))
    node = parser.parse("!a&!b");
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    assertTrue(nlNode.getChildExps().get(1) instanceof NonLeafExpressionNode);
    nlNodeLeft = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    nlNodeRight = (NonLeafExpressionNode) nlNode.getChildExps().get(1);
    assertEquals(Operator.NOT, nlNodeLeft.getOperator());
    assertEquals(1, nlNodeLeft.getChildExps().size());
    assertEquals("a", ((LeafExpressionNode) nlNodeLeft.getChildExps().get(0)).getIdentifier());
    assertEquals(Operator.NOT, nlNodeRight.getOperator());
    assertEquals(1, nlNodeRight.getChildExps().size());
    assertEquals("b", ((LeafExpressionNode) nlNodeRight.getChildExps().get(0)).getIdentifier());

    // !(a&b) -> (!(a & b))
    node = parser.parse("!(a&b)");
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.NOT, nlNode.getOperator());
    assertEquals(1, nlNode.getChildExps().size());
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("a", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());
    assertEquals("b", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());

    // a&!b -> (a & (!b))
    node = parser.parse("a&!b");
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("a", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(1) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(1);
    assertEquals(Operator.NOT, nlNode.getOperator());
    assertEquals(1, nlNode.getChildExps().size());
    assertEquals("b", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());

    // !((a|b)&!(c&!b)) -> (!((a | b) & (!(c & (!b)))))
    node = parser.parse("!((a | b) & !(c & !b))");
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.NOT, nlNode.getOperator());
    assertEquals(1, nlNode.getChildExps().size());
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    assertTrue(nlNode.getChildExps().get(1) instanceof NonLeafExpressionNode);
    nlNodeLeft = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    nlNodeRight = (NonLeafExpressionNode) nlNode.getChildExps().get(1);
    assertEquals(Operator.OR, nlNodeLeft.getOperator());
    assertEquals("a", ((LeafExpressionNode) nlNodeLeft.getChildExps().get(0)).getIdentifier());
    assertEquals("b", ((LeafExpressionNode) nlNodeLeft.getChildExps().get(1)).getIdentifier());
    assertEquals(Operator.NOT, nlNodeRight.getOperator());
    assertEquals(1, nlNodeRight.getChildExps().size());
    nlNodeRight = (NonLeafExpressionNode) nlNodeRight.getChildExps().get(0);
    assertEquals(Operator.AND, nlNodeRight.getOperator());
    assertEquals(2, nlNodeRight.getChildExps().size());
    assertEquals("c", ((LeafExpressionNode) nlNodeRight.getChildExps().get(0)).getIdentifier());
    assertTrue(nlNodeRight.getChildExps().get(1) instanceof NonLeafExpressionNode);
    nlNodeRight = (NonLeafExpressionNode) nlNodeRight.getChildExps().get(1);
    assertEquals(Operator.NOT, nlNodeRight.getOperator());
    assertEquals(1, nlNodeRight.getChildExps().size());
    assertEquals("b", ((LeafExpressionNode) nlNodeRight.getChildExps().get(0)).getIdentifier());
  }
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  public void testNonAsciiCases() throws Exception {
    ExpressionNode node = parser.parse(CellVisibility.quote("\u0027") + "&"
        + CellVisibility.quote("\u002b") + "|" + CellVisibility.quote("\u002d") + "&"
        + CellVisibility.quote("\u003f"));
    assertTrue(node instanceof NonLeafExpressionNode);
    NonLeafExpressionNode nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("\u003f", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    assertEquals(Operator.OR, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("\u002d", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("\u002b", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertEquals("\u0027", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());

    node = parser.parse(CellVisibility.quote("\u0027") + "&" + CellVisibility.quote("\u002b") + "|"
        + CellVisibility.quote("\u002d") + "&" + CellVisibility.quote("\u003f"));
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("\u003f", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    assertEquals(Operator.OR, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("\u002d", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("\u002b", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertEquals("\u0027", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());
  }
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    } catch (ParseException e) {
    }
    node = parser.parse(CellVisibility.quote("\u0027") + "&" + CellVisibility.quote("\"") + "|"
        + CellVisibility.quote("\u002b" + "&" + "\u003f"));
    assertTrue(node instanceof NonLeafExpressionNode);
    NonLeafExpressionNode nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.OR, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("\u002b" + "&" + "\u003f",
        ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("\"", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertEquals("\u0027", ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());
    try {
      node = parser.parse(CellVisibility.quote("\u0027&\\") + "|"
          + CellVisibility.quote("\u002b" + "&" + "\\") + CellVisibility.quote("$$\""));
      fail("Excpetion must be thrown as there is not operator");
    } catch (ParseException e) {
    }
    node = parser.parse(CellVisibility.quote("\u0027" + "&" + "\\") + "|"
        + CellVisibility.quote("\u003f" + "&" + "\\") + "&" + CellVisibility.quote("$$\""));
    assertTrue(node instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) node;
    assertEquals(Operator.AND, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("$$\"", ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    assertTrue(nlNode.getChildExps().get(0) instanceof NonLeafExpressionNode);
    nlNode = (NonLeafExpressionNode) nlNode.getChildExps().get(0);
    assertEquals(Operator.OR, nlNode.getOperator());
    assertEquals(2, nlNode.getChildExps().size());
    assertEquals("\u0027" + "&" + "\\",
        ((LeafExpressionNode) nlNode.getChildExps().get(0)).getIdentifier());
    assertEquals("\u003f" + "&" + "\\",
        ((LeafExpressionNode) nlNode.getChildExps().get(1)).getIdentifier());
    try {
      node = parser.parse(CellVisibility.quote("\u002b&\\") + "|" + CellVisibility.quote("\u0027&\\") + "&"
          + "\"$$");
      fail("Excpetion must be thrown as there is no end quote");
    } catch (ParseException e) {
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