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

Example 1 with ASTNullLiteral

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

the class IsNotNullIntentVisitor method visit.

@Override
public Object visit(ASTERNode node, Object data) {
    // If the ER node is meant to match any string, it can be replaced with FIELD != null.
    Object value = JexlASTHelper.getLiteralValue(node);
    if (".*?".equals(value)) {
        ASTNENode neNode = new ASTNENode(ParserTreeConstants.JJTNENODE);
        neNode.jjtAddChild(node.jjtGetChild(0), 0);
        neNode.jjtAddChild(new ASTNullLiteral(ParserTreeConstants.JJTNULLLITERAL), 1);
        return super.visit(neNode, data);
    }
    return super.visit(node, data);
}

Example 2 with ASTNullLiteral

use of org.apache.commons.jexl2.parser.ASTNullLiteral 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 3 with ASTNullLiteral

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

the class RegexFunctionVisitor method visit.

@Override
public Object visit(ASTFunctionNode node, Object data) {
    JexlNode returnNode = copy(node);
    FunctionJexlNodeVisitor functionMetadata = new FunctionJexlNodeVisitor();
    node.jjtAccept(functionMetadata, null);
    if (functionMetadata.name().equals("includeRegex") || functionMetadata.name().equals("excludeRegex")) {
        List<JexlNode> arguments = functionMetadata.args();
        JexlNode node0 = arguments.get(0);
        if (node0 instanceof ASTIdentifier) {
            JexlNode regexNode = buildRegexNode((ASTIdentifier) node0, functionMetadata.name(), arguments.get(1).image);
            if (regexNode != null) {
                returnNode = regexNode;
            }
        } else {
            JexlNode newParent;
            if (functionMetadata.name().equals("excludeRegex")) {
                newParent = new ASTAndNode(ParserTreeConstants.JJTANDNODE);
            } else {
                // it is likely an 'or' node...
                newParent = JexlNodeFactory.shallowCopy(node0);
            }
            for (int i = 0; i < node0.jjtGetNumChildren(); i++) {
                JexlNode child = node0.jjtGetChild(i);
                if (child instanceof ASTIdentifier) {
                    this.adopt(newParent, buildRegexNode((ASTIdentifier) child, functionMetadata.name(), arguments.get(1).image));
                } else {
                    // probably a Reference
                    for (int j = 0; j < child.jjtGetNumChildren(); j++) {
                        JexlNode maybeIdentifier = child.jjtGetChild(j);
                        if (maybeIdentifier instanceof ASTIdentifier) {
                            this.adopt(newParent, buildRegexNode((ASTIdentifier) maybeIdentifier, functionMetadata.name(), arguments.get(1).image));
                        }
                    }
                }
            }
            if (newParent.jjtGetNumChildren() == node0.jjtGetNumChildren() && newParent.jjtGetNumChildren() != 0) {
                returnNode = newParent;
            }
        }
    } else if (functionMetadata.name().equals("isNull")) {
        List<JexlNode> arguments = functionMetadata.args();
        JexlNode node0 = arguments.get(0);
        if (node0 instanceof ASTIdentifier) {
            returnNode = JexlNodeFactory.buildNode(new ASTEQNode(ParserTreeConstants.JJTEQNODE), node0.image, new ASTNullLiteral(ParserTreeConstants.JJTNULLLITERAL));
        }
    } else if (functionMetadata.name().equals("isNotNull")) {
        List<JexlNode> arguments = functionMetadata.args();
        JexlNode node0 = arguments.get(0);
        if (node0 instanceof ASTIdentifier) {
            returnNode = JexlNodeFactory.buildNode(new ASTNENode(ParserTreeConstants.JJTNENODE), node0.image, new ASTNullLiteral(ParserTreeConstants.JJTNULLLITERAL));
        }
    }
    return returnNode;
}

Example 4 with ASTNullLiteral

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

the class JexlASTHelper method getLiteralValue.

/**
 * Fetch the literal off of the grandchild. Throws an exception if there is no literal
 *
 * @param node
 * @return
 * @throws NoSuchElementException
 */
@SuppressWarnings("rawtypes")
public static Object getLiteralValue(JexlNode node) throws NoSuchElementException {
    Object literal = getLiteral(node);
    // If the grandchild and its image is non-null and equal to the any-field identifier
    if (literal instanceof JexlNode.Literal) {
        return ((JexlNode.Literal) literal).getLiteral();
    } else if (literal instanceof ASTTrueNode) {
        return true;
    } else if (literal instanceof ASTFalseNode) {
        return false;
    } else if (literal instanceof ASTNullLiteral) {
        return null;
    }
    NotFoundQueryException qe = new NotFoundQueryException(DatawaveErrorCode.LITERAL_MISSING);
    throw (NoSuchElementException) (new NoSuchElementException().initCause(qe));
}

Example 5 with ASTNullLiteral

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

the class JexlNodeFactory method shallowCopy.

/**
 * A shallow copy of the given JexlNode, creates a new node of the same type with the same parent and image. Children are not copied
 *
 * @param original
 * @return
 */
public static JexlNode shallowCopy(JexlNode original) {
    if (null == original) {
        throw new IllegalArgumentException();
    }
    JexlNode copy;
    Class<?> clz = original.getClass();
    if (ASTAndNode.class.isAssignableFrom(clz)) {
        copy = new ASTAndNode(ParserTreeConstants.JJTANDNODE);
    } else if (ASTBitwiseAndNode.class.isAssignableFrom(clz)) {
        copy = new ASTBitwiseAndNode(ParserTreeConstants.JJTBITWISEANDNODE);
    } else if (ASTBitwiseComplNode.class.isAssignableFrom(clz)) {
        copy = new ASTBitwiseComplNode(ParserTreeConstants.JJTBITWISECOMPLNODE);
    } else if (ASTBitwiseOrNode.class.isAssignableFrom(clz)) {
        copy = new ASTBitwiseOrNode(ParserTreeConstants.JJTBITWISEORNODE);
    } else if (ASTBitwiseXorNode.class.isAssignableFrom(clz)) {
        copy = new ASTBitwiseXorNode(ParserTreeConstants.JJTBITWISEXORNODE);
    } else if (ASTEmptyFunction.class.isAssignableFrom(clz)) {
        copy = new ASTEmptyFunction(ParserTreeConstants.JJTEMPTYFUNCTION);
    } else if (ASTEQNode.class.isAssignableFrom(clz)) {
        copy = new ASTEQNode(ParserTreeConstants.JJTEQNODE);
    } else if (ASTERNode.class.isAssignableFrom(clz)) {
        copy = new ASTERNode(ParserTreeConstants.JJTERNODE);
    } else if (ASTFalseNode.class.isAssignableFrom(clz)) {
        copy = new ASTFalseNode(ParserTreeConstants.JJTFALSENODE);
    } else if (ASTGENode.class.isAssignableFrom(clz)) {
        copy = new ASTGENode(ParserTreeConstants.JJTGENODE);
    } else if (ASTGTNode.class.isAssignableFrom(clz)) {
        copy = new ASTGTNode(ParserTreeConstants.JJTGTNODE);
    } else if (ASTIdentifier.class.isAssignableFrom(clz)) {
        copy = new ASTIdentifier(ParserTreeConstants.JJTIDENTIFIER);
    } else if (ASTLENode.class.isAssignableFrom(clz)) {
        copy = new ASTLENode(ParserTreeConstants.JJTLENODE);
    } else if (ASTLTNode.class.isAssignableFrom(clz)) {
        copy = new ASTLTNode(ParserTreeConstants.JJTLTNODE);
    } else if (ASTNENode.class.isAssignableFrom(clz)) {
        copy = new ASTNENode(ParserTreeConstants.JJTNENODE);
    } else if (ASTNRNode.class.isAssignableFrom(clz)) {
        copy = new ASTNRNode(ParserTreeConstants.JJTNRNODE);
    } else if (ASTNotNode.class.isAssignableFrom(clz)) {
        copy = new ASTNotNode(ParserTreeConstants.JJTNOTNODE);
    } else if (ASTNullLiteral.class.isAssignableFrom(clz)) {
        copy = new ASTNullLiteral(ParserTreeConstants.JJTNULLLITERAL);
    } else if (ASTNumberLiteral.class.isAssignableFrom(clz)) {
        copy = new ASTNumberLiteral(ParserTreeConstants.JJTNUMBERLITERAL);
        JexlNodes.setLiteral((ASTNumberLiteral) copy, ((ASTNumberLiteral) original).getLiteral());
    } else if (ASTOrNode.class.isAssignableFrom(clz)) {
        copy = new ASTOrNode(ParserTreeConstants.JJTORNODE);
    } else if (ASTStringLiteral.class.isAssignableFrom(clz)) {
        copy = new ASTStringLiteral(ParserTreeConstants.JJTSTRINGLITERAL);
        JexlNodes.setLiteral((ASTStringLiteral) copy, ((ASTStringLiteral) original).getLiteral());
    } else if (ASTTrueNode.class.isAssignableFrom(clz)) {
        copy = new ASTTrueNode(ParserTreeConstants.JJTTRUENODE);
    } else if (ASTReferenceExpression.class.isAssignableFrom(clz)) {
        copy = new ASTReferenceExpression(ParserTreeConstants.JJTREFERENCEEXPRESSION);
    } else if (ASTReference.class.isAssignableFrom(clz)) {
        copy = new ASTReference(ParserTreeConstants.JJTREFERENCE);
    } else if (ASTAdditiveNode.class.isAssignableFrom(clz)) {
        copy = new ASTAdditiveNode(ParserTreeConstants.JJTADDITIVENODE);
    } else if (ASTMethodNode.class.isAssignableFrom(clz)) {
        copy = new ASTMethodNode(ParserTreeConstants.JJTMETHODNODE);
    } else if (ASTFunctionNode.class.isAssignableFrom(clz)) {
        copy = new ASTFunctionNode(ParserTreeConstants.JJTFUNCTIONNODE);
    } else if (ASTMulNode.class.isAssignableFrom(clz)) {
        copy = new ASTMulNode(ParserTreeConstants.JJTMULNODE);
    } else if (ASTAssignment.class.isAssignableFrom(clz)) {
        copy = new ASTAssignment(ParserTreeConstants.JJTASSIGNMENT);
    } else {
        throw new UnsupportedOperationException();
    }
    copy.jjtSetParent(original.jjtGetParent());
    copy.image = original.image;
    return copy;
}