Examples of net.sf.saxon.event.TreeReceiver

net.sf.saxon.event.TreeReceiver
A TreeReceiver acts as a bridge between a SequenceReceiver, which can receive events for constructing any kind of sequence, and an ordinary Receiver, which only handles events relating to the building of trees. To do this, it has to process any items added to the sequence using the append() interface; all other events are passed through unchanged.
If atomic items are appended to the sequence, then adjacent atomic items are turned in to a text node by converting them to strings and adding a single space as a separator.

If a document node is appended to the sequence, then the document node is ignored and its children are appended to the sequence.

If any other node is appended to the sequence, then it is pushed to the result as a sequence of Receiver events, which may involve walking recursively through the contents of a tree.

        props = SaxonXQSequence.setDefaultProperties(props);
        try {
            SerializerFactory sf = config.getSerializerFactory();
            PipelineConfiguration pipe = config.makePipelineConfiguration();
            Receiver out = sf.getReceiver(result, pipe, props);
            TreeReceiver tr = new TreeReceiver(out);
            tr.open();
            tr.append(item, 0, NodeInfo.ALL_NAMESPACES);
            tr.close();
        } catch (XPathException e) {
            XQException xqe = new XQException(e.getMessage());
            xqe.initCause(e);
            throw xqe;
        }

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    public void writeXdmValue(XdmValue value, Destination destination) throws SaxonApiException {
        try {
            Receiver out = destination.getReceiver(config);
            out = new NamespaceReducer(out);
            TreeReceiver tree = new TreeReceiver(out);
            tree.open();
            tree.startDocument(0);
            for (Iterator<XdmItem> it = value.iterator(); it.hasNext();) {
                XdmItem item = it.next();
                tree.append((Item)item.getUnderlyingValue(), 0, NodeInfo.ALL_NAMESPACES);
            }
            tree.endDocument();
            tree.close();
        } catch (XPathException err) {
            throw new SaxonApiException(err);
        }
    }

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            return current;
        } else if (pe instanceof StartDocumentEvent || pe instanceof StartElementEvent) {
            SubtreeIterator sub = new SubtreeIterator(base, pe);
            TinyBuilder builder = new TinyBuilder();
            builder.setPipelineConfiguration(pipe);
            TreeReceiver receiver = new TreeReceiver(builder);
            builder.setPipelineConfiguration(pipe);
            EventIteratorToReceiver.copy(sub, receiver);
            current = builder.getCurrentRoot();
            position++;
            return current;

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        }
        if (emitter.getWriter()==null) {
            emitter.setWriter(new OutputStreamWriter(System.err));
        }


        TreeReceiver rec = new TreeReceiver(emitter);
        
        XPathContext c2 = context.newMinorContext();
        c2.setOrigin(this);
        Properties props = new Properties();
        props.put(OutputKeys.OMIT_XML_DECLARATION, "yes");
        emitter.setOutputProperties(props);
        c2.changeOutputDestination(props, rec, false, Validation.PRESERVE, null);


        if (select != null) {
            SequenceIterator iter = select.iterate(c2);
            while (true) {
                Item item = iter.next();
                if (item == null) {
                    break;
                }
                rec.append(item, locationId);
            }
        }
        processChildren(c2);


        rec.close();
        //c2.resetOutputDestination(old);


        if (terminate != null) {
            String term = terminate.evaluateAsString(context);
            if (term.equals("no")) {

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                    getDocumentValidator(out,
                                         source.getBaseURI(),
                                         controller.getNamePool(),
                                         validation);
            if (val != out) {
                SequenceReceiver sr = new TreeReceiver(val);
                sr.setConfiguration(controller.getConfiguration());
                c2.setReceiver(sr);
                val = sr;
            }
            val.setConfiguration(controller.getConfiguration());
            val.startDocument(0);

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    private void writeItemToResult(Result result, Properties props) throws XQException {
        try {
            SerializerFactory sf = config.getSerializerFactory();
            PipelineConfiguration pipe = config.makePipelineConfiguration();
            Receiver out = sf.getReceiver(result, pipe, props);
            TreeReceiver tr = new TreeReceiver(out);
            tr.open();
            tr.append(item, 0, NodeInfo.ALL_NAMESPACES);
            tr.close();
        } catch (XPathException e) {
            XQException xqe = new XQException(e.getMessage());
            xqe.initCause(e);
            throw xqe;
        }

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            return current;
        } else if (pe instanceof StartDocumentEvent || pe instanceof StartElementEvent) {
            SubtreeIterator sub = new SubtreeIterator(base, pe);
            TinyBuilder builder = new TinyBuilder();
            builder.setPipelineConfiguration(pipe);
            TreeReceiver receiver = new TreeReceiver(builder);
            builder.setPipelineConfiguration(pipe);
            EventIteratorToReceiver.copy(sub, receiver);
            current = builder.getCurrentRoot();
            position++;
            return current;

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            Configuration config = proc.getUnderlyingConfiguration();
            PipelineConfiguration pipeConfig = config.makePipelineConfiguration();


            Receiver out = destination.getReceiver(config);
            out = new NamespaceReducer(out);
            TreeReceiver tree = new TreeReceiver(out);
            tree.setPipelineConfiguration(pipeConfig);
            if (baseURI != null) {
                tree.setSystemId(baseURI.toASCIIString());
            }
            tree.open();
            tree.startDocument(0);
            for (XdmValue value : values) {
                for (XdmItem item : (Iterable<XdmItem>) value) {
                    tree.append((Item) item.getUnderlyingValue(), 0,
                            NodeInfo.ALL_NAMESPACES);
                }
            }
            tree.endDocument();
            tree.close();
        } catch (XPathException err) {
            throw new SaxonApiException(err);
        }
    }

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            Configuration config = proc.getUnderlyingConfiguration();
            PipelineConfiguration pipeConfig = config.makePipelineConfiguration();


            Receiver out = destination.getReceiver(config);
            out = new NamespaceReducer(out);
            TreeReceiver tree = new TreeReceiver(out);
            tree.setPipelineConfiguration(pipeConfig);
            if (baseURI != null) {
                tree.setSystemId(baseURI.toASCIIString());
            }
            tree.open();
            tree.startDocument(0);
            tree.append((Item) node.getUnderlyingValue(), 0, NodeInfo.ALL_NAMESPACES);
            tree.endDocument();
            tree.close();
        } catch (XPathException err) {
            throw new SaxonApiException(err);
        }
    }

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Related Classes of net.sf.saxon.event.TreeReceiver

com.xmlcalabash.util.S9apiUtils

net.sf.saxon.evpull.SequenceComposer

net.sf.saxon.instruct.Copy

net.sf.saxon.instruct.Message

net.sf.saxon.s9api.Processor

net.sf.saxon.xqj.SaxonXQItem

net.sf.saxon.trans.XPathException

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