Examples with ASTIdentifier org.apache.commons.jexl2.parser.ASTIdentifier used on opensource projects

Example 1 with ASTIdentifier

use of org.apache.commons.jexl2.parser.ASTIdentifier in project datawave by NationalSecurityAgency.

the class WhindexTerm method createWhindexNode.

public JexlNode createWhindexNode() {
    JexlNode copiedNode = RebuildingVisitor.copy(mappableNode);
    List<ASTIdentifier> identifiers = JexlASTHelper.getIdentifiers(copiedNode);
    Set<String> fieldNames = new HashSet<>();
    identifiers.forEach(x -> fieldNames.add(JexlASTHelper.getIdentifier(x)));
    if (fieldNames.size() == 1) {
        for (ASTIdentifier identifier : identifiers) {
            JexlNodes.replaceChild(identifier.jjtGetParent(), identifier, JexlNodes.makeIdentifierWithImage(newFieldName));
        }
    } else {
        throw new RuntimeException("Cannot create a Whindex term using multiple identifiers.");
    }
    return copiedNode;
}

Example 2 with ASTIdentifier

use of org.apache.commons.jexl2.parser.ASTIdentifier in project datawave by NationalSecurityAgency.

the class TLDEventDataFilter method extractQueryFieldsFromScript.

/**
 * Extract the query fields from the script and sort them
 *
 * @param script
 */
private void extractQueryFieldsFromScript(ASTJexlScript script) {
    queryFields = new ArrayList<>();
    String field;
    List<ASTIdentifier> identifiers = JexlASTHelper.getIdentifiers(script);
    for (ASTIdentifier identifier : identifiers) {
        field = JexlASTHelper.deconstructIdentifier(identifier);
        if (!queryFields.contains(field)) {
            queryFields.add(field);
        }
    }
    // sort the queryFields
    Collections.sort(queryFields);
    queryFields = Collections.unmodifiableList(queryFields);
}

Example 3 with ASTIdentifier

use of org.apache.commons.jexl2.parser.ASTIdentifier in project datawave by NationalSecurityAgency.

the class QueryModelVisitor method expandBinaryNodeFromModel.

/**
 * Applies the forward mapping from the QueryModel to a node, expanding the node into an Or if needed.
 *
 * @param node
 * @param data
 * @return
 */
protected JexlNode expandBinaryNodeFromModel(JexlNode node, Object data) {
    String field = JexlASTHelper.getIdentifier(node);
    if (isFieldExcluded(field)) {
        return node;
    }
    // Count the immediate children:
    int childCount = node.jjtGetNumChildren();
    if (childCount != 2) {
        QueryException qe = new QueryException(DatawaveErrorCode.BINARY_NODE_TOO_MANY_CHILDREN, MessageFormat.format("Node: {0}", PrintingVisitor.formattedQueryString(node)));
        throw new DatawaveFatalQueryException(qe);
    }
    // Find identifiers
    List<ASTIdentifier> allidentifiers = JexlASTHelper.getIdentifiers(node);
    // If we don't have any identifiers, we have nothing to expand
    if (allidentifiers.isEmpty()) {
        return node;
    }
    JexlNode leftNode = node.jjtGetChild(0);
    JexlNode rightNode = node.jjtGetChild(1);
    if (log.isTraceEnabled()) {
        log.trace("leftNode:" + PrintingVisitor.formattedQueryString(leftNode));
        log.trace("leftNodeQuery:" + JexlStringBuildingVisitor.buildQuery(leftNode));
        log.trace("rightNode:" + PrintingVisitor.formattedQueryString(rightNode));
        log.trace("rightNodeQuery:" + JexlStringBuildingVisitor.buildQuery(rightNode));
    }
    // this will expand identifiers that have a method connected to them
    boolean leftState = JexlASTHelper.HasMethodVisitor.hasMethod(leftNode);
    if (leftState) {
        // there is a method under leftNode
        leftNode = (JexlNode) leftNode.jjtAccept(this.simpleQueryModelVisitor, null);
    }
    boolean rightState = JexlASTHelper.HasMethodVisitor.hasMethod(rightNode);
    if (rightState) {
        // there is a method under rightNode
        rightNode = (JexlNode) rightNode.jjtAccept(this.simpleQueryModelVisitor, null);
    }
    // expand any identifiers inside of methods/functions in the left and right nodes
    leftNode = (JexlNode) leftNode.jjtAccept(this, null);
    rightNode = (JexlNode) rightNode.jjtAccept(this, null);
    if (log.isTraceEnabled()) {
        log.trace("after expansion, leftNode:" + PrintingVisitor.formattedQueryString(leftNode));
        log.trace("after expansion, leftNodeQuery:" + JexlStringBuildingVisitor.buildQuery(leftNode));
        log.trace("after expansion, rightNode:" + PrintingVisitor.formattedQueryString(rightNode));
        log.trace("after expansion, rightNodeQuery:" + JexlStringBuildingVisitor.buildQuery(rightNode));
    }
    // if state == true on either side, then there is a method on one side and we are done applying the model
    if (leftState || rightState) {
        JexlNode toReturn = JexlNodeFactory.buildUntypedBinaryNode(node, leftNode, rightNode);
        if (log.isTraceEnabled()) {
            log.trace("done early. returning:" + JexlStringBuildingVisitor.buildQuery(toReturn));
        }
        return toReturn;
    }
    JexlNode leftSeed, rightSeed;
    Set<JexlNode> left = Sets.newHashSet(), right = Sets.newHashSet();
    boolean isNullEquality = false;
    if (node instanceof ASTEQNode && (leftNode instanceof ASTNullLiteral || rightNode instanceof ASTNullLiteral)) {
        isNullEquality = true;
    }
    // the query has been previously groomed so that identifiers are on the left and literals are on the right
    // an identifier with a method attached will have already been substituted above (and will return null for the IdentifierOpLiteral)
    // The normal case of `IDENTIFIER op 'literal'`
    JexlASTHelper.IdentifierOpLiteral op = JexlASTHelper.getIdentifierOpLiteral(node);
    if (op != null) {
        // One identifier
        leftSeed = op.getIdentifier();
        rightSeed = op.getLiteral();
        if (rightSeed instanceof ASTNullLiteral && node instanceof ASTEQNode) {
            isNullEquality = true;
        }
    } else {
        // We know from above that childCount == 2. We may have a reference on both sides of the expression
        leftSeed = node.jjtGetChild(0);
        rightSeed = node.jjtGetChild(1);
    }
    if (leftSeed instanceof ASTReference) {
        // String fieldName = JexlASTHelper.getIdentifier((JexlNode)leftSeed);
        List<ASTIdentifier> identifiers = JexlASTHelper.getIdentifiers(leftSeed);
        if (identifiers.size() > 1) {
            log.warn("I did not expect to see more than one Identifier here for " + JexlStringBuildingVisitor.buildQuery(leftSeed) + " from " + JexlStringBuildingVisitor.buildQuery(leftNode));
        }
        for (ASTIdentifier identifier : identifiers) {
            for (String fieldName : getAliasesForField(JexlASTHelper.deconstructIdentifier(identifier))) {
                left.add(JexlNodeFactory.buildIdentifier(fieldName));
            }
        }
    } else if (leftSeed instanceof ASTIdentifier) {
        for (String fieldName : getAliasesForField(JexlASTHelper.deconstructIdentifier((ASTIdentifier) leftSeed))) {
            left.add(JexlNodeFactory.buildIdentifier(fieldName));
        }
    } else {
        // Not an identifier, therefore it's probably a literal
        left.add(leftSeed);
    }
    if (rightSeed instanceof ASTReference) {
        List<ASTIdentifier> identifiers = JexlASTHelper.getIdentifiers(rightSeed);
        if (identifiers.size() > 1) {
            log.warn("I did not expect to see more than one Identifier here for " + JexlStringBuildingVisitor.buildQuery(rightSeed) + " from " + JexlStringBuildingVisitor.buildQuery(rightNode));
        }
        for (ASTIdentifier identifier : identifiers) {
            for (String fieldName : getAliasesForField(JexlASTHelper.deconstructIdentifier(identifier))) {
                right.add(JexlNodeFactory.buildIdentifier(fieldName));
            }
        }
    } else if (rightSeed instanceof ASTIdentifier) {
        for (String fieldName : getAliasesForField(JexlASTHelper.deconstructIdentifier((ASTIdentifier) rightSeed))) {
            right.add(JexlNodeFactory.buildIdentifier(fieldName));
        }
    } else {
        // Not an identifier, therefore it's probably a literal
        right.add(rightSeed);
    }
    boolean requiresAnd = isNullEquality || node instanceof ASTNENode;
    @SuppressWarnings("unchecked") Set<List<JexlNode>> // retrieve the cartesian product
    product = Sets.cartesianProduct(left, right);
    /**
     * use the product transformer to shallow copy the jexl nodes. We've created new nodes that will be embedded within an ast reference. As a result, we
     * need to ensure that if we create a logical structure ( such as an or ) -- each literal references a unique identifier from the right. Otherwise,
     * subsequent visitors will reference incorrection sub trees, and potentially negate the activity of the query model visitor
     */
    Set<List<JexlNode>> newSet = product.stream().map(list -> list.stream().map(RebuildingVisitor::copy).collect(Collectors.toList())).collect(Collectors.toSet());
    if (product.size() > 1) {
        JexlNode expanded;
        if (requiresAnd) {
            expanded = JexlNodeFactory.createNodeTreeFromPairs(ContainerType.AND_NODE, node, newSet);
        } else {
            expanded = JexlNodeFactory.createNodeTreeFromPairs(ContainerType.OR_NODE, node, newSet);
        }
        if (log.isTraceEnabled())
            log.trace("expanded:" + PrintingVisitor.formattedQueryString(expanded));
        return expanded;
    } else if (1 == product.size()) {
        List<JexlNode> pair = product.iterator().next();
        JexlNode expanded = JexlNodeFactory.buildUntypedBinaryNode(node, pair.get(0), pair.get(1));
        if (log.isTraceEnabled())
            log.trace("expanded:" + PrintingVisitor.formattedQueryString(expanded));
        return expanded;
    }
    // If we couldn't map anything, return a copy
    if (log.isTraceEnabled())
        log.trace("just returning the original:" + PrintingVisitor.formattedQueryString(node));
    return node;
}

Example 4 with ASTIdentifier

use of org.apache.commons.jexl2.parser.ASTIdentifier in project datawave by NationalSecurityAgency.

the class JexlControlledQueryParser method checkIfQueryAllowed.

private void checkIfQueryAllowed(String query) throws ParseException {
    JexlNode node;
    try {
        node = JexlASTHelper.parseJexlQuery(query);
    } catch (Throwable e) {
        throw new ParseException(e.getMessage());
    }
    Set<String> fields = new TreeSet<>();
    List<ASTIdentifier> idList = JexlASTHelper.getIdentifiers(node);
    for (ASTIdentifier id : idList) {
        String fieldName = id.image;
        if (!StringUtils.isEmpty(fieldName)) {
            fieldName = fieldName.trim().toUpperCase();
            if (fieldName.charAt(0) == '$') {
                fields.add(fieldName.substring(1));
            } else {
                fields.add(fieldName);
            }
        }
    }
    fields.removeAll(allowedFields);
    if (!fields.isEmpty()) {
        throw new ParseException("Unallowed field(s) '" + fields + "' for this type of query");
    }
}

Example 5 with ASTIdentifier

use of org.apache.commons.jexl2.parser.ASTIdentifier in project datawave by NationalSecurityAgency.

the class RangeStream method containsIndexOnlyFields.

protected boolean containsIndexOnlyFields(JexlNode node) throws TableNotFoundException {
    List<ASTIdentifier> identifiers = JexlASTHelper.getIdentifiers(node);
    Set<String> indexOnlyFields = metadataHelper.getIndexOnlyFields(config.getDatatypeFilter());
    // Hack to get around the extra ASTIdentifier left in the AST by the threshold marker node
    Iterator<ASTIdentifier> iter = identifiers.iterator();
    while (iter.hasNext()) {
        ASTIdentifier id = iter.next();
        if (ExceededValueThresholdMarkerJexlNode.label().equals(id.image) || ExceededTermThresholdMarkerJexlNode.label().equals(id.image) || ExceededOrThresholdMarkerJexlNode.label().equals(id.image)) {
            iter.remove();
        }
    }
    for (ASTIdentifier identifier : identifiers) {
        String fieldName = JexlASTHelper.deconstructIdentifier(identifier);
        if (indexOnlyFields.contains(fieldName)) {
            return true;
        }
    }
    return false;
}