Examples with DerefQueryNode org.apache.jackrabbit.spi.commons.query.DerefQueryNode used on opensource projects

Example 1 with DerefQueryNode

use of org.apache.jackrabbit.spi.commons.query.DerefQueryNode in project jackrabbit by apache.

the class XPathQueryBuilder method visit.

// ---------------------< XPathVisitor >-------------------------------------
/**
 * Implements the generic visit method for this <code>XPathVisitor</code>.
 *
 * @param node the current node as created by the XPath parser.
 * @param data the current <code>QueryNode</code> created by this
 *             <code>XPathVisitor</code>.
 * @return the current <code>QueryNode</code>. Can be different from
 *         <code>data</code>.
 */
public Object visit(SimpleNode node, Object data) {
    QueryNode queryNode = (QueryNode) data;
    switch(node.getId()) {
        case JJTXPATH2:
            queryNode = createPathQueryNode(node);
            break;
        case JJTROOT:
        case JJTROOTDESCENDANTS:
            if (queryNode instanceof PathQueryNode) {
                ((PathQueryNode) queryNode).setAbsolute(true);
            } else {
                exceptions.add(new InvalidQueryException("Unsupported root level query node: " + queryNode));
            }
            break;
        case JJTSTEPEXPR:
            if (isAttributeAxis(node)) {
                if (queryNode.getType() == QueryNode.TYPE_RELATION || (queryNode.getType() == QueryNode.TYPE_DEREF && ((DerefQueryNode) queryNode).getRefProperty() == null) || queryNode.getType() == QueryNode.TYPE_ORDER || queryNode.getType() == QueryNode.TYPE_PATH || queryNode.getType() == QueryNode.TYPE_TEXTSEARCH) {
                    // traverse
                    node.childrenAccept(this, queryNode);
                } else if (queryNode.getType() == QueryNode.TYPE_NOT) {
                    // is null expression
                    RelationQueryNode isNull = factory.createRelationQueryNode(queryNode, RelationQueryNode.OPERATION_NULL);
                    applyRelativePath(isNull);
                    node.childrenAccept(this, isNull);
                    NotQueryNode notNode = (NotQueryNode) queryNode;
                    NAryQueryNode parent = (NAryQueryNode) notNode.getParent();
                    parent.removeOperand(notNode);
                    parent.addOperand(isNull);
                } else {
                    // not null expression
                    RelationQueryNode notNull = factory.createRelationQueryNode(queryNode, RelationQueryNode.OPERATION_NOT_NULL);
                    applyRelativePath(notNull);
                    node.childrenAccept(this, notNull);
                    ((NAryQueryNode) queryNode).addOperand(notNull);
                }
            } else {
                if (queryNode.getType() == QueryNode.TYPE_PATH) {
                    createLocationStep(node, (NAryQueryNode) queryNode);
                } else if (queryNode.getType() == QueryNode.TYPE_TEXTSEARCH || queryNode.getType() == QueryNode.TYPE_RELATION) {
                    node.childrenAccept(this, queryNode);
                } else {
                    // step within a predicate
                    RelationQueryNode tmp = factory.createRelationQueryNode(null, RelationQueryNode.OPERATION_NOT_NULL);
                    node.childrenAccept(this, tmp);
                    if (tmpRelPath == null) {
                        tmpRelPath = new PathBuilder();
                    }
                    PathQueryNode relPath = tmp.getRelativePath();
                    LocationStepQueryNode[] steps = relPath.getPathSteps();
                    Name nameTest = steps[steps.length - 1].getNameTest();
                    if (nameTest == null) {
                        // see LocationStepQueryNode javadoc on when getNameTest()==null: when it was a star (asterisk)
                        nameTest = RelationQueryNode.STAR_NAME_TEST;
                    }
                    tmpRelPath.addLast(nameTest);
                }
            }
            break;
        case JJTNAMETEST:
            if (queryNode.getType() == QueryNode.TYPE_LOCATION || queryNode.getType() == QueryNode.TYPE_DEREF || queryNode.getType() == QueryNode.TYPE_RELATION || queryNode.getType() == QueryNode.TYPE_TEXTSEARCH || queryNode.getType() == QueryNode.TYPE_PATH) {
                createNodeTest(node, queryNode);
            } else if (queryNode.getType() == QueryNode.TYPE_ORDER) {
                setOrderSpecPath(node, (OrderQueryNode) queryNode);
            } else {
                // traverse
                node.childrenAccept(this, queryNode);
            }
            break;
        case JJTELEMENTNAMEORWILDCARD:
            if (queryNode.getType() == QueryNode.TYPE_LOCATION) {
                SimpleNode child = (SimpleNode) node.jjtGetChild(0);
                if (child.getId() != JJTANYNAME) {
                    createNodeTest(child, queryNode);
                }
            }
            break;
        case JJTTEXTTEST:
            if (queryNode.getType() == QueryNode.TYPE_LOCATION) {
                LocationStepQueryNode loc = (LocationStepQueryNode) queryNode;
                loc.setNameTest(JCR_XMLTEXT);
            }
            break;
        case JJTTYPENAME:
            if (queryNode.getType() == QueryNode.TYPE_LOCATION) {
                LocationStepQueryNode loc = (LocationStepQueryNode) queryNode;
                String ntName = ((SimpleNode) node.jjtGetChild(0)).getValue();
                try {
                    Name nt = resolver.getQName(ntName);
                    NodeTypeQueryNode nodeType = factory.createNodeTypeQueryNode(loc, nt);
                    loc.addPredicate(nodeType);
                } catch (NameException e) {
                    exceptions.add(new InvalidQueryException("Not a valid name: " + ntName));
                } catch (NamespaceException e) {
                    exceptions.add(new InvalidQueryException("Not a valid name: " + ntName));
                }
            }
            break;
        case JJTOREXPR:
            NAryQueryNode parent = (NAryQueryNode) queryNode;
            QueryNode orQueryNode = factory.createOrQueryNode(parent);
            parent.addOperand(orQueryNode);
            // traverse
            node.childrenAccept(this, orQueryNode);
            break;
        case JJTANDEXPR:
            parent = (NAryQueryNode) queryNode;
            QueryNode andQueryNode = factory.createAndQueryNode(parent);
            parent.addOperand(andQueryNode);
            // traverse
            node.childrenAccept(this, andQueryNode);
            break;
        case JJTCOMPARISONEXPR:
            createExpression(node, (NAryQueryNode) queryNode);
            break;
        case JJTSTRINGLITERAL:
        case JJTDECIMALLITERAL:
        case JJTDOUBLELITERAL:
        case JJTINTEGERLITERAL:
            if (queryNode.getType() == QueryNode.TYPE_RELATION) {
                assignValue(node, (RelationQueryNode) queryNode);
            } else if (queryNode.getType() == QueryNode.TYPE_LOCATION) {
                if (node.getId() == JJTINTEGERLITERAL) {
                    int index = Integer.parseInt(node.getValue());
                    ((LocationStepQueryNode) queryNode).setIndex(index);
                } else {
                    exceptions.add(new InvalidQueryException("LocationStep only allows integer literal as position index"));
                }
            } else {
                exceptions.add(new InvalidQueryException("Parse error: data is not a RelationQueryNode"));
            }
            break;
        case JJTUNARYMINUS:
            if (queryNode.getType() == QueryNode.TYPE_RELATION) {
                ((RelationQueryNode) queryNode).setUnaryMinus(true);
            } else {
                exceptions.add(new InvalidQueryException("Parse error: data is not a RelationQueryNode"));
            }
            break;
        case JJTFUNCTIONCALL:
            queryNode = createFunction(node, queryNode);
            break;
        case JJTORDERBYCLAUSE:
            root.setOrderNode(factory.createOrderQueryNode(root));
            queryNode = root.getOrderNode();
            node.childrenAccept(this, queryNode);
            break;
        case JJTORDERSPEC:
            OrderQueryNode orderQueryNode = (OrderQueryNode) queryNode;
            orderQueryNode.newOrderSpec();
            node.childrenAccept(this, queryNode);
            if (!orderQueryNode.isValid()) {
                exceptions.add(new InvalidQueryException("Invalid order specification. (Missing @?)"));
            }
            break;
        case JJTORDERMODIFIER:
            if (node.jjtGetNumChildren() > 0 && ((SimpleNode) node.jjtGetChild(0)).getId() == JJTDESCENDING) {
                ((OrderQueryNode) queryNode).setAscending(false);
            }
            break;
        case JJTPREDICATELIST:
            if (queryNode.getType() == QueryNode.TYPE_PATH) {
                // switch to last location
                QueryNode[] operands = ((PathQueryNode) queryNode).getOperands();
                queryNode = operands[operands.length - 1];
            }
            node.childrenAccept(this, queryNode);
            break;
        case JJTPREDICATE:
            if (queryNode.getType() == QueryNode.TYPE_LOCATION || queryNode.getType() == QueryNode.TYPE_DEREF) {
                node.childrenAccept(this, queryNode);
            } else {
                // predicate not allowed here
                exceptions.add(new InvalidQueryException("Unsupported location for predicate"));
            }
            break;
        case JJTDOTDOT:
            if (queryNode instanceof LocationStepQueryNode) {
                ((LocationStepQueryNode) queryNode).setNameTest(PATH_FACTORY.getParentElement().getName());
            } else {
                ((RelationQueryNode) queryNode).addPathElement(PATH_FACTORY.getParentElement());
            }
            break;
        default:
            // per default traverse
            node.childrenAccept(this, queryNode);
    }
    return queryNode;
}

Example 2 with DerefQueryNode

use of org.apache.jackrabbit.spi.commons.query.DerefQueryNode in project jackrabbit by apache.

the class XPathQueryBuilder method createDerefQueryNode.

private DerefQueryNode createDerefQueryNode(SimpleNode node, boolean descendant, QueryNode pathNode) throws NamespaceException {
    DerefQueryNode derefNode = factory.createDerefQueryNode(pathNode, null, false);
    // assign property name
    node.jjtGetChild(1).jjtAccept(this, derefNode);
    // check property name
    if (derefNode.getRefProperty() == null) {
        exceptions.add(new InvalidQueryException("Wrong first argument type for jcr:deref"));
    }
    SimpleNode literal = (SimpleNode) node.jjtGetChild(2).jjtGetChild(0);
    if (literal.getId() == JJTSTRINGLITERAL) {
        String value = literal.getValue();
        // strip quotes
        value = value.substring(1, value.length() - 1);
        if (!value.equals("*")) {
            Name name = null;
            try {
                name = decode(resolver.getQName(value));
            } catch (NameException e) {
                exceptions.add(new InvalidQueryException("Illegal name: " + value));
            }
            derefNode.setNameTest(name);
        }
    } else {
        exceptions.add(new InvalidQueryException("Second argument for jcr:deref must be a String"));
    }
    // check if descendant
    if (!descendant) {
        Node p = node.jjtGetParent();
        for (int i = 0; i < p.jjtGetNumChildren(); i++) {
            SimpleNode c = (SimpleNode) p.jjtGetChild(i);
            if (c == node) {
                break;
            }
            descendant = (c.getId() == JJTSLASHSLASH || c.getId() == JJTROOTDESCENDANTS);
        }
    }
    derefNode.setIncludeDescendants(descendant);
    return derefNode;
}

Example 3 with DerefQueryNode

use of org.apache.jackrabbit.spi.commons.query.DerefQueryNode in project jackrabbit by apache.

the class LuceneQueryBuilder method visit.

public Object visit(RelationQueryNode node, Object data) throws RepositoryException {
    PathQueryNode relPath = node.getRelativePath();
    if (relPath == null && node.getOperation() != QueryConstants.OPERATION_SIMILAR && node.getOperation() != QueryConstants.OPERATION_SPELLCHECK) {
        exceptions.add(new InvalidQueryException("@* not supported in predicate"));
        return data;
    }
    LocationStepQueryNode[] steps = relPath.getPathSteps();
    Name propertyName;
    if (node.getOperation() == QueryConstants.OPERATION_SIMILAR) {
        // this is a bit ugly:
        // use the name of a dummy property because relPath actually
        // references a property. whereas the relPath of the similar
        // operation references a node
        propertyName = NameConstants.JCR_PRIMARYTYPE;
    } else {
        propertyName = steps[steps.length - 1].getNameTest();
    }
    Query query;
    String[] stringValues = new String[1];
    switch(node.getValueType()) {
        case 0:
            // not set: either IS NULL or IS NOT NULL
            break;
        case QueryConstants.TYPE_DATE:
            stringValues[0] = DateField.dateToString(node.getDateValue());
            break;
        case QueryConstants.TYPE_DOUBLE:
            stringValues[0] = DoubleField.doubleToString(node.getDoubleValue());
            break;
        case QueryConstants.TYPE_LONG:
            stringValues[0] = LongField.longToString(node.getLongValue());
            break;
        case QueryConstants.TYPE_STRING:
            if (node.getOperation() == QueryConstants.OPERATION_EQ_GENERAL || node.getOperation() == QueryConstants.OPERATION_EQ_VALUE || node.getOperation() == QueryConstants.OPERATION_NE_GENERAL || node.getOperation() == QueryConstants.OPERATION_NE_VALUE) {
                // only use coercing on non-range operations
                stringValues = getStringValues(propertyName, node.getStringValue());
            } else {
                stringValues[0] = node.getStringValue();
            }
            break;
        case QueryConstants.TYPE_POSITION:
            // ignore position. is handled in the location step
            return null;
        default:
            throw new IllegalArgumentException("Unknown relation type: " + node.getValueType());
    }
    // get property transformation
    final int[] transform = new int[] { TransformConstants.TRANSFORM_NONE };
    node.acceptOperands(new DefaultQueryNodeVisitor() {

        public Object visit(PropertyFunctionQueryNode node, Object data) {
            if (node.getFunctionName().equals(PropertyFunctionQueryNode.LOWER_CASE)) {
                transform[0] = TransformConstants.TRANSFORM_LOWER_CASE;
            } else if (node.getFunctionName().equals(PropertyFunctionQueryNode.UPPER_CASE)) {
                transform[0] = TransformConstants.TRANSFORM_UPPER_CASE;
            }
            return data;
        }
    }, null);
    String field = "";
    try {
        field = resolver.getJCRName(propertyName);
    } catch (NamespaceException e) {
        // should never happen
        exceptions.add(e);
    }
    // support for fn:name()
    if (propertyName.equals(FN_NAME)) {
        if (node.getValueType() != QueryConstants.TYPE_STRING) {
            exceptions.add(new InvalidQueryException("Name function can " + "only be used in conjunction with a string literal"));
            return data;
        }
        if (node.getOperation() == QueryConstants.OPERATION_EQ_VALUE || node.getOperation() == QueryConstants.OPERATION_EQ_GENERAL) {
            // check if string literal is a valid XML Name
            if (XMLChar.isValidName(node.getStringValue())) {
                // parse string literal as JCR Name
                try {
                    Name n = session.getQName(ISO9075.decode(node.getStringValue()));
                    query = new NameQuery(n, indexFormatVersion, nsMappings);
                } catch (NameException e) {
                    exceptions.add(e);
                    return data;
                } catch (NamespaceException e) {
                    exceptions.add(e);
                    return data;
                }
            } else {
                // will never match -> create dummy query
                query = new BooleanQuery();
            }
        } else if (node.getOperation() == QueryConstants.OPERATION_LIKE) {
            // no coercing, see above
            if (stringValues[0].equals("%")) {
                query = new org.apache.lucene.search.MatchAllDocsQuery();
            } else {
                query = new WildcardNameQuery(stringValues[0], transform[0], session, nsMappings, cache);
            }
        } else {
            exceptions.add(new InvalidQueryException("Name function can " + "only be used in conjunction with the following operators: equals, like"));
            return data;
        }
    } else {
        switch(node.getOperation()) {
            // =
            case QueryConstants.OPERATION_EQ_VALUE:
            case QueryConstants.OPERATION_EQ_GENERAL:
                BooleanQuery or = new BooleanQuery();
                for (String value : stringValues) {
                    Term t = new Term(FieldNames.PROPERTIES, FieldNames.createNamedValue(field, value));
                    Query q;
                    if (transform[0] == TransformConstants.TRANSFORM_UPPER_CASE) {
                        q = new CaseTermQuery.Upper(t);
                    } else if (transform[0] == TransformConstants.TRANSFORM_LOWER_CASE) {
                        q = new CaseTermQuery.Lower(t);
                    } else {
                        q = new JackrabbitTermQuery(t);
                    }
                    or.add(q, Occur.SHOULD);
                }
                query = or;
                if (node.getOperation() == QueryConstants.OPERATION_EQ_VALUE) {
                    query = createSingleValueConstraint(or, field);
                }
                break;
            // >=
            case QueryConstants.OPERATION_GE_VALUE:
            case QueryConstants.OPERATION_GE_GENERAL:
                or = new BooleanQuery();
                for (String value : stringValues) {
                    Term lower = new Term(FieldNames.PROPERTIES, FieldNames.createNamedValue(field, value));
                    Term upper = new Term(FieldNames.PROPERTIES, FieldNames.createNamedValue(field, "\uFFFF"));
                    or.add(new RangeQuery(lower, upper, true, transform[0], cache), Occur.SHOULD);
                }
                query = or;
                if (node.getOperation() == QueryConstants.OPERATION_GE_VALUE) {
                    query = createSingleValueConstraint(or, field);
                }
                break;
            // >
            case QueryConstants.OPERATION_GT_VALUE:
            case QueryConstants.OPERATION_GT_GENERAL:
                or = new BooleanQuery();
                for (String value : stringValues) {
                    Term lower = new Term(FieldNames.PROPERTIES, FieldNames.createNamedValue(field, value));
                    Term upper = new Term(FieldNames.PROPERTIES, FieldNames.createNamedValue(field, "\uFFFF"));
                    or.add(new RangeQuery(lower, upper, false, transform[0], cache), Occur.SHOULD);
                }
                query = or;
                if (node.getOperation() == QueryConstants.OPERATION_GT_VALUE) {
                    query = createSingleValueConstraint(or, field);
                }
                break;
            // <=
            case QueryConstants.OPERATION_LE_VALUE:
            case // <=
            QueryConstants.OPERATION_LE_GENERAL:
                or = new BooleanQuery();
                for (String value : stringValues) {
                    Term lower = new Term(FieldNames.PROPERTIES, FieldNames.createNamedValue(field, ""));
                    Term upper = new Term(FieldNames.PROPERTIES, FieldNames.createNamedValue(field, value));
                    or.add(new RangeQuery(lower, upper, true, transform[0], cache), Occur.SHOULD);
                }
                query = or;
                if (node.getOperation() == QueryConstants.OPERATION_LE_VALUE) {
                    query = createSingleValueConstraint(query, field);
                }
                break;
            case // LIKE
            QueryConstants.OPERATION_LIKE:
                // no coercing, see above
                if (stringValues[0].equals("%")) {
                    query = Util.createMatchAllQuery(field, indexFormatVersion, cache);
                } else {
                    query = new WildcardQuery(FieldNames.PROPERTIES, field, stringValues[0], transform[0], cache);
                }
                break;
            // <
            case QueryConstants.OPERATION_LT_VALUE:
            case QueryConstants.OPERATION_LT_GENERAL:
                or = new BooleanQuery();
                for (String value : stringValues) {
                    Term lower = new Term(FieldNames.PROPERTIES, FieldNames.createNamedValue(field, ""));
                    Term upper = new Term(FieldNames.PROPERTIES, FieldNames.createNamedValue(field, value));
                    or.add(new RangeQuery(lower, upper, false, transform[0], cache), Occur.SHOULD);
                }
                query = or;
                if (node.getOperation() == QueryConstants.OPERATION_LT_VALUE) {
                    query = createSingleValueConstraint(or, field);
                }
                break;
            case // !=
            QueryConstants.OPERATION_NE_VALUE:
                // match nodes with property 'field' that includes svp and mvp
                BooleanQuery notQuery = new BooleanQuery();
                notQuery.add(Util.createMatchAllQuery(field, indexFormatVersion, cache), Occur.SHOULD);
                // exclude all nodes where 'field' has the term in question
                for (String value : stringValues) {
                    Term t = new Term(FieldNames.PROPERTIES, FieldNames.createNamedValue(field, value));
                    Query q;
                    if (transform[0] == TransformConstants.TRANSFORM_UPPER_CASE) {
                        q = new CaseTermQuery.Upper(t);
                    } else if (transform[0] == TransformConstants.TRANSFORM_LOWER_CASE) {
                        q = new CaseTermQuery.Lower(t);
                    } else {
                        q = new JackrabbitTermQuery(t);
                    }
                    notQuery.add(q, Occur.MUST_NOT);
                }
                // and exclude all nodes where 'field' is multi valued
                notQuery.add(new JackrabbitTermQuery(new Term(FieldNames.MVP, field)), Occur.MUST_NOT);
                query = notQuery;
                break;
            case // !=
            QueryConstants.OPERATION_NE_GENERAL:
                // that's:
                // all nodes with property 'field'
                // minus the nodes that have a single property 'field' that is
                // not equal to term in question
                // minus the nodes that have a multi-valued property 'field' and
                // all values are equal to term in question
                notQuery = new BooleanQuery();
                notQuery.add(Util.createMatchAllQuery(field, indexFormatVersion, cache), Occur.SHOULD);
                for (String value : stringValues) {
                    // exclude the nodes that have the term and are single valued
                    Term t = new Term(FieldNames.PROPERTIES, FieldNames.createNamedValue(field, value));
                    Query svp = new NotQuery(new JackrabbitTermQuery(new Term(FieldNames.MVP, field)));
                    BooleanQuery and = new BooleanQuery();
                    Query q;
                    if (transform[0] == TransformConstants.TRANSFORM_UPPER_CASE) {
                        q = new CaseTermQuery.Upper(t);
                    } else if (transform[0] == TransformConstants.TRANSFORM_LOWER_CASE) {
                        q = new CaseTermQuery.Lower(t);
                    } else {
                        q = new JackrabbitTermQuery(t);
                    }
                    and.add(q, Occur.MUST);
                    and.add(svp, Occur.MUST);
                    notQuery.add(and, Occur.MUST_NOT);
                }
                // todo above also excludes multi-valued properties that contain
                // multiple instances of only stringValues. e.g. text={foo, foo}
                query = notQuery;
                break;
            case QueryConstants.OPERATION_NULL:
                query = new NotQuery(Util.createMatchAllQuery(field, indexFormatVersion, cache));
                break;
            case QueryConstants.OPERATION_SIMILAR:
                try {
                    NodeId id = hmgr.resolveNodePath(session.getQPath(node.getStringValue()));
                    if (id != null) {
                        query = new SimilarityQuery(id.toString(), analyzer);
                    } else {
                        query = new BooleanQuery();
                    }
                } catch (Exception e) {
                    exceptions.add(e);
                    query = new BooleanQuery();
                }
                break;
            case QueryConstants.OPERATION_NOT_NULL:
                query = Util.createMatchAllQuery(field, indexFormatVersion, cache);
                break;
            case QueryConstants.OPERATION_SPELLCHECK:
                query = Util.createMatchAllQuery(field, indexFormatVersion, cache);
                break;
            default:
                throw new IllegalArgumentException("Unknown relation operation: " + node.getOperation());
        }
    }
    if (steps.length > 1) {
        // child axis in relation
        // elements.length - 1 = property name
        // elements.length - 2 = last child axis name test
        boolean selectParent = true;
        for (int i = steps.length - 2; i >= 0; i--) {
            LocationStepQueryNode step = steps[i];
            Name name = steps[i].getNameTest();
            if (i == steps.length - 2) {
                if (step instanceof DerefQueryNode) {
                    query = createPredicateDeref(query, (DerefQueryNode) step, data);
                    if (steps.length == 2) {
                        selectParent = false;
                    }
                } else if (step != null) {
                    // join name test with property query if there is one
                    if (name != null) {
                        if (!name.equals(PARENT_ELEMENT_NAME)) {
                            Query nameTest = new NameQuery(name, indexFormatVersion, nsMappings);
                            BooleanQuery and = new BooleanQuery();
                            and.add(query, Occur.MUST);
                            and.add(nameTest, Occur.MUST);
                            query = and;
                        } else {
                            // If we're searching the parent, we want to return the child axis,
                            // not the parent because this is part of the predicate. For instance,
                            // if the query is //child[../base], this part of the code is operating
                            // on the "../base" portion. So we want to return all the child nodes
                            // of "base", which will then be matched against the non predicate part.
                            query = new ChildAxisQuery(sharedItemMgr, query, null, indexFormatVersion, nsMappings);
                            selectParent = false;
                        }
                    } else {
                    // otherwise the query can be used as is
                    }
                }
            } else if (name != null && name.equals(PARENT_ELEMENT_NAME)) {
                // We need to select one of the properties if we haven't already.
                if (selectParent) {
                    query = new ParentAxisQuery(query, null, indexFormatVersion, nsMappings);
                    selectParent = false;
                }
                // See the note above on searching parents
                query = new ChildAxisQuery(sharedItemMgr, query, null, indexFormatVersion, nsMappings);
            } else {
                if (step != null) {
                    query = new ParentAxisQuery(query, name, indexFormatVersion, nsMappings);
                } else {
                    throw new UnsupportedOperationException();
                }
            }
        }
        // finally select the parent of the selected nodes
        if (selectParent) {
            query = new ParentAxisQuery(query, null, indexFormatVersion, nsMappings);
        }
    }
    return query;
}

Example 4 with DerefQueryNode

use of org.apache.jackrabbit.spi.commons.query.DerefQueryNode in project jackrabbit by apache.

the class XPathQueryBuilder method createFunction.

/**
 * Creates a function based on <code>node</code>.
 *
 * @param node      the function node from the xpath tree.
 * @param queryNode the current query node.
 * @return the function node
 */
private QueryNode createFunction(SimpleNode node, QueryNode queryNode) {
    // find out function name
    String tmp = ((SimpleNode) node.jjtGetChild(0)).getValue();
    String fName = tmp.substring(0, tmp.length() - 1);
    try {
        Name funName = resolver.getQName(fName);
        if (FN_NOT.equals(funName) || FN_NOT_10.equals(funName)) {
            if (queryNode instanceof NAryQueryNode) {
                QueryNode not = factory.createNotQueryNode(queryNode);
                ((NAryQueryNode) queryNode).addOperand(not);
                // @todo is this needed?
                queryNode = not;
                // traverse
                if (node.jjtGetNumChildren() == 2) {
                    node.jjtGetChild(1).jjtAccept(this, queryNode);
                } else {
                    exceptions.add(new InvalidQueryException("fn:not only supports one expression argument"));
                }
            } else {
                exceptions.add(new InvalidQueryException("Unsupported location for function fn:not"));
            }
        } else if (XS_DATETIME.equals(funName)) {
            // check arguments
            if (node.jjtGetNumChildren() == 2) {
                if (queryNode instanceof RelationQueryNode) {
                    RelationQueryNode rel = (RelationQueryNode) queryNode;
                    SimpleNode literal = (SimpleNode) node.jjtGetChild(1).jjtGetChild(0);
                    if (literal.getId() == JJTSTRINGLITERAL) {
                        String value = literal.getValue();
                        // strip quotes
                        value = value.substring(1, value.length() - 1);
                        Calendar c = ISO8601.parse(value);
                        if (c == null) {
                            exceptions.add(new InvalidQueryException("Unable to parse string literal for xs:dateTime: " + value));
                        } else {
                            rel.setDateValue(c.getTime());
                        }
                    } else {
                        exceptions.add(new InvalidQueryException("Wrong argument type for xs:dateTime"));
                    }
                } else {
                    exceptions.add(new InvalidQueryException("Unsupported location for function xs:dateTime"));
                }
            } else {
                // wrong number of arguments
                exceptions.add(new InvalidQueryException("Wrong number of arguments for xs:dateTime"));
            }
        } else if (JCR_CONTAINS.equals(funName)) {
            // check number of arguments
            if (node.jjtGetNumChildren() == 3) {
                if (queryNode instanceof NAryQueryNode) {
                    SimpleNode literal = (SimpleNode) node.jjtGetChild(2).jjtGetChild(0);
                    if (literal.getId() == JJTSTRINGLITERAL) {
                        TextsearchQueryNode contains = factory.createTextsearchQueryNode(queryNode, unescapeQuotes(literal.getValue()));
                        // assign property name
                        SimpleNode path = (SimpleNode) node.jjtGetChild(1);
                        path.jjtAccept(this, contains);
                        ((NAryQueryNode) queryNode).addOperand(contains);
                    } else {
                        exceptions.add(new InvalidQueryException("Wrong argument type for jcr:contains"));
                    }
                }
            } else {
                // wrong number of arguments
                exceptions.add(new InvalidQueryException("Wrong number of arguments for jcr:contains"));
            }
        } else if (JCR_LIKE.equals(funName)) {
            // check number of arguments
            if (node.jjtGetNumChildren() == 3) {
                if (queryNode instanceof NAryQueryNode) {
                    RelationQueryNode like = factory.createRelationQueryNode(queryNode, RelationQueryNode.OPERATION_LIKE);
                    ((NAryQueryNode) queryNode).addOperand(like);
                    // assign property name
                    node.jjtGetChild(1).jjtAccept(this, like);
                    // check property name
                    if (like.getRelativePath() == null) {
                        exceptions.add(new InvalidQueryException("Wrong first argument type for jcr:like"));
                    }
                    SimpleNode literal = (SimpleNode) node.jjtGetChild(2).jjtGetChild(0);
                    if (literal.getId() == JJTSTRINGLITERAL) {
                        like.setStringValue(unescapeQuotes(literal.getValue()));
                    } else {
                        exceptions.add(new InvalidQueryException("Wrong second argument type for jcr:like"));
                    }
                } else {
                    exceptions.add(new InvalidQueryException("Unsupported location for function jcr:like"));
                }
            } else {
                // wrong number of arguments
                exceptions.add(new InvalidQueryException("Wrong number of arguments for jcr:like"));
            }
        } else if (FN_TRUE.equals(funName)) {
            if (queryNode.getType() == QueryNode.TYPE_RELATION) {
                RelationQueryNode rel = (RelationQueryNode) queryNode;
                rel.setStringValue("true");
            } else {
                exceptions.add(new InvalidQueryException("Unsupported location for true()"));
            }
        } else if (FN_FALSE.equals(funName)) {
            if (queryNode.getType() == QueryNode.TYPE_RELATION) {
                RelationQueryNode rel = (RelationQueryNode) queryNode;
                rel.setStringValue("false");
            } else {
                exceptions.add(new InvalidQueryException("Unsupported location for false()"));
            }
        } else if (FN_POSITION.equals(funName)) {
            if (queryNode.getType() == QueryNode.TYPE_RELATION) {
                RelationQueryNode rel = (RelationQueryNode) queryNode;
                if (rel.getOperation() == RelationQueryNode.OPERATION_EQ_GENERAL) {
                    // set dummy value to set type of relation query node
                    // will be overwritten when the tree is further parsed.
                    rel.setPositionValue(1);
                    rel.addPathElement(PATH_FACTORY.createElement(FN_POSITION_FULL));
                } else {
                    exceptions.add(new InvalidQueryException("Unsupported expression with position(). Only = is supported."));
                }
            } else {
                exceptions.add(new InvalidQueryException("Unsupported location for position()"));
            }
        } else if (FN_FIRST.equals(funName)) {
            if (queryNode.getType() == QueryNode.TYPE_RELATION) {
                ((RelationQueryNode) queryNode).setPositionValue(1);
            } else if (queryNode.getType() == QueryNode.TYPE_LOCATION) {
                ((LocationStepQueryNode) queryNode).setIndex(1);
            } else {
                exceptions.add(new InvalidQueryException("Unsupported location for first()"));
            }
        } else if (FN_LAST.equals(funName)) {
            if (queryNode.getType() == QueryNode.TYPE_RELATION) {
                ((RelationQueryNode) queryNode).setPositionValue(LocationStepQueryNode.LAST);
            } else if (queryNode.getType() == QueryNode.TYPE_LOCATION) {
                ((LocationStepQueryNode) queryNode).setIndex(LocationStepQueryNode.LAST);
            } else {
                exceptions.add(new InvalidQueryException("Unsupported location for last()"));
            }
        } else if (JCR_DEREF.equals(funName)) {
            // check number of arguments
            if (node.jjtGetNumChildren() == 3) {
                boolean descendant = false;
                if (queryNode.getType() == QueryNode.TYPE_LOCATION) {
                    LocationStepQueryNode loc = (LocationStepQueryNode) queryNode;
                    // remember if descendant axis
                    descendant = loc.getIncludeDescendants();
                    queryNode = loc.getParent();
                    ((NAryQueryNode) queryNode).removeOperand(loc);
                }
                if (queryNode.getType() == QueryNode.TYPE_PATH) {
                    PathQueryNode pathNode = (PathQueryNode) queryNode;
                    pathNode.addPathStep(createDerefQueryNode(node, descendant, pathNode));
                } else if (queryNode.getType() == QueryNode.TYPE_RELATION) {
                    RelationQueryNode relNode = (RelationQueryNode) queryNode;
                    DerefQueryNode deref = createDerefQueryNode(node, descendant, relNode.getRelativePath());
                    relNode.getRelativePath().addPathStep(deref);
                } else {
                    exceptions.add(new InvalidQueryException("Unsupported location for jcr:deref()"));
                }
            }
        } else if (JCR_SCORE.equals(funName)) {
            if (queryNode.getType() == QueryNode.TYPE_ORDER) {
                setOrderSpecPath(node, (OrderQueryNode) queryNode);
            } else {
                exceptions.add(new InvalidQueryException("Unsupported location for jcr:score()"));
            }
        } else if (FN_LOWER_CASE.equals(funName)) {
            if (node.jjtGetNumChildren() == 2) {
                if (queryNode.getType() == QueryNode.TYPE_RELATION) {
                    RelationQueryNode relNode = (RelationQueryNode) queryNode;
                    relNode.addOperand(factory.createPropertyFunctionQueryNode(relNode, PropertyFunctionQueryNode.LOWER_CASE));
                    // get property name
                    node.jjtGetChild(1).jjtAccept(this, relNode);
                } else if (queryNode.getType() == QueryNode.TYPE_ORDER) {
                    ((OrderQueryNode) queryNode).setFunction(FN_LOWER_CASE.getLocalName());
                    node.childrenAccept(this, queryNode);
                } else {
                    exceptions.add(new InvalidQueryException("Unsupported location for fn:lower-case()"));
                }
            } else {
                exceptions.add(new InvalidQueryException("Wrong number of argument for fn:lower-case()"));
            }
        } else if (FN_UPPER_CASE.equals(funName)) {
            if (node.jjtGetNumChildren() == 2) {
                if (queryNode.getType() == QueryNode.TYPE_RELATION) {
                    RelationQueryNode relNode = (RelationQueryNode) queryNode;
                    relNode.addOperand(factory.createPropertyFunctionQueryNode(relNode, PropertyFunctionQueryNode.UPPER_CASE));
                    // get property name
                    node.jjtGetChild(1).jjtAccept(this, relNode);
                } else if (queryNode.getType() == QueryNode.TYPE_ORDER) {
                    ((OrderQueryNode) queryNode).setFunction(FN_UPPER_CASE.getLocalName());
                    node.childrenAccept(this, queryNode);
                } else {
                    exceptions.add(new InvalidQueryException("Unsupported location for fn:upper-case()"));
                }
            } else {
                exceptions.add(new InvalidQueryException("Wrong number of argument for fn:upper-case()"));
            }
        } else if (REP_NORMALIZE.equals(funName)) {
            if (node.jjtGetNumChildren() == 2) {
                if (queryNode.getType() == QueryNode.TYPE_ORDER) {
                    ((OrderQueryNode) queryNode).setFunction(REP_NORMALIZE.getLocalName());
                    node.childrenAccept(this, queryNode);
                } else {
                    exceptions.add(new InvalidQueryException("Unsupported location for rep:normalize()"));
                }
            } else {
                exceptions.add(new InvalidQueryException("Wrong number of argument for rep:normalize()"));
            }
        } else if (REP_SIMILAR.equals(funName)) {
            if (node.jjtGetNumChildren() == 3) {
                if (queryNode instanceof NAryQueryNode) {
                    NAryQueryNode parent = (NAryQueryNode) queryNode;
                    RelationQueryNode rel = factory.createRelationQueryNode(parent, RelationQueryNode.OPERATION_SIMILAR);
                    parent.addOperand(rel);
                    // assign path
                    node.jjtGetChild(1).jjtAccept(this, rel);
                    // get path string
                    node.jjtGetChild(2).jjtAccept(this, rel);
                    // check if string is set
                    if (rel.getStringValue() == null) {
                        exceptions.add(new InvalidQueryException("Second argument for rep:similar() must be of type string"));
                    }
                } else {
                    exceptions.add(new InvalidQueryException("Unsupported location for rep:similar()"));
                }
            } else {
                exceptions.add(new InvalidQueryException("Wrong number of arguments for rep:similar()"));
            }
        } else if (REP_SPELLCHECK.equals(funName) && queryNode.getType() != QueryNode.TYPE_PATH) {
            if (node.jjtGetNumChildren() == 2) {
                if (queryNode instanceof NAryQueryNode) {
                    NAryQueryNode parent = (NAryQueryNode) queryNode;
                    RelationQueryNode rel = factory.createRelationQueryNode(parent, RelationQueryNode.OPERATION_SPELLCHECK);
                    parent.addOperand(rel);
                    // get string to check
                    node.jjtGetChild(1).jjtAccept(this, rel);
                    // check if string is set
                    if (rel.getStringValue() == null) {
                        exceptions.add(new InvalidQueryException("Argument for rep:spellcheck() must be of type string"));
                    }
                    // set a dummy property name
                    rel.addPathElement(PATH_FACTORY.createElement(NameConstants.JCR_PRIMARYTYPE));
                } else {
                    exceptions.add(new InvalidQueryException("Unsupported location for rep:spellcheck()"));
                }
            } else {
                exceptions.add(new InvalidQueryException("Wrong number of arguments for rep:spellcheck()"));
            }
        } else if (queryNode.getType() == QueryNode.TYPE_RELATION) {
            // use function name as name of a pseudo property in a relation
            try {
                Name name = resolver.getQName(fName + "()");
                Path.Element element = PATH_FACTORY.createElement(name);
                RelationQueryNode relNode = (RelationQueryNode) queryNode;
                relNode.addPathElement(element);
            } catch (NameException e) {
                exceptions.add(e);
            }
        } else if (queryNode.getType() == QueryNode.TYPE_PATH) {
            // use function name as name of a pseudo property in select clause
            try {
                Name name = resolver.getQName(fName + "()");
                root.addSelectProperty(name);
            } catch (NameException e) {
                exceptions.add(e);
            }
        } else {
            exceptions.add(new InvalidQueryException("Unsupported function: " + fName));
        }
    } catch (NamespaceException e) {
        exceptions.add(e);
    } catch (IllegalNameException e) {
        exceptions.add(e);
    }
    return queryNode;
}