Examples with XPathException org.exist.xquery.XPathException used on opensource projects

Example 96 with XPathException

use of org.exist.xquery.XPathException in project exist by eXist-db.

the class Update method eval.

/* (non-Javadoc)
     * @see org.exist.xquery.AbstractExpression#eval(org.exist.xquery.value.Sequence, org.exist.xquery.value.Item)
     */
public Sequence eval(Sequence contextSequence, Item contextItem) throws XPathException {
    if (context.getProfiler().isEnabled()) {
        context.getProfiler().start(this);
        context.getProfiler().message(this, Profiler.DEPENDENCIES, "DEPENDENCIES", Dependency.getDependenciesName(this.getDependencies()));
        if (contextSequence != null) {
            context.getProfiler().message(this, Profiler.START_SEQUENCES, "CONTEXT SEQUENCE", contextSequence);
        }
        if (contextItem != null) {
            context.getProfiler().message(this, Profiler.START_SEQUENCES, "CONTEXT ITEM", contextItem.toSequence());
        }
    }
    if (contextItem != null) {
        contextSequence = contextItem.toSequence();
    }
    final Sequence contentSeq = value.eval(contextSequence);
    if (contentSeq.isEmpty()) {
        throw new XPathException(this, Messages.getMessage(Error.UPDATE_EMPTY_CONTENT));
    }
    final Sequence inSeq = select.eval(contextSequence);
    /* If we try and Update a node at an invalid location,
         * trap the error in a context variable,
         * this is then accessible from xquery via. the context extension module - deliriumsky
         * TODO: This trapping could be expanded further - basically where XPathException is thrown from thiss class
         * TODO: Maybe we could provide more detailed messages in the trap, e.g. couldnt update node `xyz` into `abc` becuase... this would be nicer for the end user of the xquery application
         */
    if (!Type.subTypeOf(inSeq.getItemType(), Type.NODE)) {
        // Indicate the failure to perform this update by adding it to the sequence in the context variable XQueryContext.XQUERY_CONTEXTVAR_XQUERY_UPDATE_ERROR
        ValueSequence prevUpdateErrors = null;
        final XPathException xpe = new XPathException(this, Messages.getMessage(Error.UPDATE_SELECT_TYPE));
        final Object ctxVarObj = context.getAttribute(XQueryContext.XQUERY_CONTEXTVAR_XQUERY_UPDATE_ERROR);
        if (ctxVarObj == null) {
            prevUpdateErrors = new ValueSequence();
        } else {
            prevUpdateErrors = (ValueSequence) XPathUtil.javaObjectToXPath(ctxVarObj, context);
        }
        prevUpdateErrors.add(new StringValue(xpe.getMessage()));
        context.setAttribute(XQueryContext.XQUERY_CONTEXTVAR_XQUERY_UPDATE_ERROR, prevUpdateErrors);
        if (!inSeq.isEmpty()) {
            // TODO: should we trap this instead of throwing an exception - deliriumsky?
            throw xpe;
        }
    }
    if (!inSeq.isEmpty()) {
        context.pushInScopeNamespaces();
        // start a transaction
        try (final Txn transaction = getTransaction()) {
            final NotificationService notifier = context.getBroker().getBrokerPool().getNotificationService();
            final StoredNode[] ql = selectAndLock(transaction, inSeq);
            for (final StoredNode node : ql) {
                final DocumentImpl doc = node.getOwnerDocument();
                if (!doc.getPermissions().validate(context.getSubject(), Permission.WRITE)) {
                    throw new XPathException(this, "User '" + context.getSubject().getName() + "' does not have permission to write to the document '" + doc.getDocumentURI() + "'!");
                }
                // update the document
                switch(node.getNodeType()) {
                    case Node.ELEMENT_NODE:
                        final NodeListImpl content = new NodeListImpl();
                        for (final SequenceIterator j = contentSeq.iterate(); j.hasNext(); ) {
                            final Item next = j.nextItem();
                            if (Type.subTypeOf(next.getType(), Type.NODE)) {
                                content.add(((NodeValue) next).getNode());
                            } else {
                                final TextImpl text = new TextImpl(next.getStringValue());
                                content.add(text);
                            }
                        }
                        ((ElementImpl) node).update(transaction, content);
                        break;
                    case Node.TEXT_NODE:
                        final ElementImpl textParent = (ElementImpl) node.getParentNode();
                        final TextImpl text = new TextImpl(contentSeq.getStringValue());
                        text.setOwnerDocument(doc);
                        textParent.updateChild(transaction, node, text);
                        break;
                    case Node.ATTRIBUTE_NODE:
                        final ElementImpl attrParent = (ElementImpl) ((Attr) node).getOwnerElement();
                        if (attrParent == null) {
                            LOG.warn("parent node not found for {}", node.getNodeId());
                            break;
                        }
                        final AttrImpl attr = (AttrImpl) node;
                        final AttrImpl attribute = new AttrImpl(attr.getQName(), contentSeq.getStringValue(), context.getBroker().getBrokerPool().getSymbols());
                        attribute.setOwnerDocument(doc);
                        attrParent.updateChild(transaction, node, attribute);
                        break;
                    default:
                        throw new XPathException(this, "unsupported node-type");
                }
                doc.setLastModified(System.currentTimeMillis());
                modifiedDocuments.add(doc);
                context.getBroker().storeXMLResource(transaction, doc);
                notifier.notifyUpdate(doc, UpdateListener.UPDATE);
            }
            finishTriggers(transaction);
            // commit the transaction
            transaction.commit();
        } catch (final LockException | EXistException | TriggerException e) {
            throw new XPathException(this, e.getMessage(), e);
        } finally {
            unlockDocuments();
            context.popInScopeNamespaces();
        }
    }
    if (context.getProfiler().isEnabled()) {
        context.getProfiler().end(this, "", Sequence.EMPTY_SEQUENCE);
    }
    return Sequence.EMPTY_SEQUENCE;
}

Example 97 with XPathException

use of org.exist.xquery.XPathException in project exist by eXist-db.

the class ArrayListValueSequence method toNodeSet.

@Override
public NodeSet toNodeSet() throws XPathException {
    if (isEmpty) {
        return NodeSet.EMPTY_SET;
    }
    // for this method to work, all items have to be nodes
    if (itemType != Type.ANY_TYPE && Type.subTypeOf(itemType, Type.NODE)) {
        final NodeSet set = new NewArrayNodeSet();
        for (int i = 0; i <= values.size(); i++) {
            NodeValue v = (NodeValue) values.get(i);
            if (v.getImplementationType() != NodeValue.PERSISTENT_NODE) {
                // found an in-memory document
                final DocumentImpl doc;
                if (v.getType() == Type.DOCUMENT) {
                    doc = (DocumentImpl) v;
                } else {
                    doc = ((NodeImpl) v).getOwnerDocument();
                }
                if (doc == null) {
                    continue;
                }
                // make this document persistent: doc.makePersistent()
                // returns a map of all root node ids mapped to the corresponding
                // persistent node. We scan the current sequence and replace all
                // in-memory nodes with their new persistent node objects.
                final DocumentImpl expandedDoc = doc.expandRefs(null);
                final org.exist.dom.persistent.DocumentImpl newDoc = expandedDoc.makePersistent();
                if (newDoc != null) {
                    NodeId rootId = newDoc.getBrokerPool().getNodeFactory().createInstance();
                    for (int j = i; j <= values.size(); j++) {
                        v = (NodeValue) values.get(j);
                        if (v.getImplementationType() != NodeValue.PERSISTENT_NODE) {
                            NodeImpl node = (NodeImpl) v;
                            final Document nodeOwnerDoc;
                            if (node.getNodeType() == Node.DOCUMENT_NODE) {
                                nodeOwnerDoc = (Document) node;
                            } else {
                                nodeOwnerDoc = node.getOwnerDocument();
                            }
                            if (nodeOwnerDoc == doc) {
                                if (node.getNodeType() == Node.ATTRIBUTE_NODE) {
                                    node = expandedDoc.getAttribute(node.getNodeNumber());
                                } else {
                                    node = expandedDoc.getNode(node.getNodeNumber());
                                }
                                NodeId nodeId = node.getNodeId();
                                if (nodeId == null) {
                                    throw new XPathException("Internal error: nodeId == null");
                                }
                                if (node.getNodeType() == Node.DOCUMENT_NODE) {
                                    nodeId = rootId;
                                } else {
                                    nodeId = rootId.append(nodeId);
                                }
                                final NodeProxy p = new NodeProxy(newDoc, nodeId, node.getNodeType());
                                // replace the node by the NodeProxy
                                values.set(j, p);
                                setHasChanged();
                            }
                        }
                    }
                    set.add((NodeProxy) values.get(i));
                }
            } else {
                set.add((NodeProxy) v);
            }
        }
        // }
        return set;
    } else {
        throw new XPathException("Type error: the sequence cannot be converted into" + " a node set. Item type is " + Type.getTypeName(itemType));
    }
}

Example 98 with XPathException

use of org.exist.xquery.XPathException in project exist by eXist-db.

the class BinaryValueFromBinaryString method convertTo.

@Override
public BinaryValue convertTo(BinaryValueType binaryValueType) throws XPathException {
    // TODO temporary approach, consider implementing a TranscodingBinaryValueFromBinaryString(BinaryValueFromBinaryString) class
    // that only does the transncoding lazily
    final UnsynchronizedByteArrayOutputStream baos = new UnsynchronizedByteArrayOutputStream();
    FilterOutputStream fos = null;
    try {
        // transcode
        fos = binaryValueType.getEncoder(baos);
        streamBinaryTo(fos);
    } catch (final IOException ioe) {
        throw new XPathException(ioe);
    } finally {
        if (fos != null) {
            try {
                fos.close();
            } catch (final IOException ioe) {
                LOG.error("Unable to close stream: {}", ioe.getMessage(), ioe);
            }
        }
        try {
            baos.close();
        } catch (final IOException ioe) {
            LOG.error("Unable to close stream: {}", ioe.getMessage(), ioe);
        }
    }
    return new BinaryValueFromBinaryString(binaryValueType, baos.toString(UTF_8));
}

Example 99 with XPathException

use of org.exist.xquery.XPathException in project exist by eXist-db.

the class DecimalValue method mod.

/* (non-Javadoc)
     * @see org.exist.xquery.value.NumericValue#mod(org.exist.xquery.value.NumericValue)
     */
public NumericValue mod(NumericValue other) throws XPathException {
    if (other.getType() == Type.DECIMAL) {
        if (other.isZero()) {
            throw new XPathException(ErrorCodes.FOAR0001, "division by zero");
        }
        final BigDecimal quotient = value.divide(((DecimalValue) other).value, 0, RoundingMode.DOWN);
        final BigDecimal remainder = value.subtract(quotient.setScale(0, RoundingMode.DOWN).multiply(((DecimalValue) other).value));
        return new DecimalValue(remainder);
    } else {
        return ((NumericValue) convertTo(other.getType())).mod(other);
    }
}

Example 100 with XPathException

use of org.exist.xquery.XPathException in project exist by eXist-db.

the class AtomicValue method toSAX.

@Override
public void toSAX(final DBBroker broker, final ContentHandler handler, final Properties properties) throws SAXException {
    try {
        final String s = getStringValue();
        handler.characters(s.toCharArray(), 0, s.length());
    } catch (final XPathException e) {
        throw new SAXException(e);
    }
}