Examples with SirixException org.sirix.exception.SirixException used on opensource projects

Example 36 with SirixException

use of org.sirix.exception.SirixException in project sirix by sirixdb.

the class StAXSerializerTest method testStAXSerializer.

@Test
public void testStAXSerializer() {
    try {
        final ByteArrayOutputStream out = new ByteArrayOutputStream();
        final XMLSerializer xmlSerializer = new XMLSerializerBuilder(holder.getResourceManager(), out).emitXMLDeclaration().build();
        xmlSerializer.call();
        final XdmNodeReadTrx rtx = holder.getResourceManager().beginNodeReadTrx();
        StAXSerializer serializer = new StAXSerializer(rtx);
        final StringBuilder strBuilder = new StringBuilder();
        boolean isEmptyElement = false;
        while (serializer.hasNext()) {
            XMLEvent event = serializer.nextEvent();
            switch(event.getEventType()) {
                case XMLStreamConstants.START_DOCUMENT:
                    strBuilder.append("<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>");
                    break;
                case XMLStreamConstants.START_ELEMENT:
                    emitElement(event, strBuilder);
                    if (serializer.peek().getEventType() == XMLStreamConstants.END_ELEMENT) {
                        strBuilder.append("/>");
                        isEmptyElement = true;
                    } else {
                        strBuilder.append('>');
                    }
                    break;
                case XMLStreamConstants.END_ELEMENT:
                    if (isEmptyElement) {
                        isEmptyElement = false;
                    } else {
                        emitQName(true, event, strBuilder);
                        strBuilder.append('>');
                    }
                    break;
                case XMLStreamConstants.CHARACTERS:
                    strBuilder.append(((Characters) event).getData());
                    break;
            }
        }
        assertEquals(out.toString(), strBuilder.toString());
        // Check getElementText().
        // ========================================================
        holder.getReader().moveToDocumentRoot();
        holder.getReader().moveToFirstChild();
        serializer = new StAXSerializer(holder.getReader());
        String elemText = null;
        // <p:a>
        if (serializer.hasNext()) {
            serializer.next();
            elemText = serializer.getElementText();
        }
        assertEquals("oops1foooops2baroops3", elemText);
        // oops1
        checkForException(serializer);
        // <b>
        if (serializer.hasNext()) {
            serializer.next();
            elemText = serializer.getElementText();
        }
        assertEquals("foo", elemText);
        // foo
        checkForException(serializer);
        // <c>
        if (serializer.hasNext()) {
            serializer.next();
            elemText = serializer.getElementText();
        }
        assertEquals("", elemText);
        // </c>
        checkForException(serializer);
        // </b>
        checkForException(serializer);
        // oops2
        checkForException(serializer);
        // <b p:x='y'>
        if (serializer.hasNext()) {
            serializer.next();
            elemText = serializer.getElementText();
        }
        assertEquals("bar", elemText);
        // <c>
        if (serializer.hasNext()) {
            serializer.next();
            elemText = serializer.getElementText();
        }
        assertEquals("", elemText);
        // </c>
        checkForException(serializer);
        // bar
        checkForException(serializer);
        // </b>
        checkForException(serializer);
        // oops3
        checkForException(serializer);
        // </p:a>
        checkForException(serializer);
        rtx.close();
    } catch (final XMLStreamException e) {
        fail("XML error while parsing: " + e.getMessage());
    } catch (final SirixException e) {
        fail("Sirix exception occured: " + e.getMessage());
    } catch (final Exception e) {
        fail("Any exception occured: " + e.getMessage());
    }
}

Example 37 with SirixException

use of org.sirix.exception.SirixException in project sirix by sirixdb.

the class IndexController method containsIndex.

/**
 * Determines if an index of the specified type is available.
 *
 * @param type type of index to lookup
 * @param resourceManager the {@link ResourceManager} this index controller is bound to
 * @return {@code true} if an index of the specified type exists, {@code false} otherwise
 * @throws SirixIOException if an I/O exception occurs while deserializing the index configuration
 *         for the specified {@code revision}
 */
public boolean containsIndex(final IndexType type, final ResourceManager resourceManager, final int revision) throws SirixIOException {
    final Indexes indexes = new Indexes();
    final java.nio.file.Path indexesFile = resourceManager.getResourceConfig().mPath.resolve(ResourceConfiguration.ResourcePaths.INDEXES.getFile() + String.valueOf(revision) + ".xml");
    try {
        if (Files.exists(indexesFile) && Files.size(indexesFile) > 0) {
            try (final InputStream in = new FileInputStream(indexesFile.toFile())) {
                indexes.init(deserialize(in).getFirstChild());
            }
        }
    } catch (IOException | DocumentException | SirixException e) {
        throw new SirixIOException("Index definitions couldn't be deserialized!", e);
    }
    for (final IndexDef indexDef : indexes.getIndexDefs()) {
        if (indexDef.getType() == type)
            return true;
    }
    return false;
}

Example 38 with SirixException

use of org.sirix.exception.SirixException in project sirix by sirixdb.

the class IndexController method deserialize.

/**
 * Deserialize from an {@link InputStream}.
 *
 * @param out the {@link InputStream} from which to deserialize the XML fragment
 * @throws SirixException if an exception occurs during serialization
 */
public Node<?> deserialize(final InputStream in) throws SirixException {
    try {
        final DocumentParser parser = new DocumentParser(in);
        final D2NodeBuilder builder = new D2NodeBuilder();
        parser.parse(builder);
        return builder.root();
    } catch (final DocumentException e) {
        throw new SirixException(e);
    }
}

Example 39 with SirixException

use of org.sirix.exception.SirixException in project sirix by sirixdb.

the class ResourceTransactionUsage method main.

public static void main(final String[] args) {
    final Path file = LOCATION.resolve("db");
    final DatabaseConfiguration config = new DatabaseConfiguration(file);
    if (Files.exists(file)) {
        Databases.truncateDatabase(config);
    }
    Databases.createDatabase(config);
    try (final Database database = Databases.openDatabase(file)) {
        database.createResource(new ResourceConfiguration.Builder("resource", config).build());
        try (final ResourceManager resource = database.getResourceManager(new ResourceManagerConfiguration.Builder("resource").build());
            final XdmNodeWriteTrx wtx = resource.beginNodeWriteTrx()) {
            wtx.insertSubtreeAsFirstChild(XMLShredder.createFileReader(LOCATION.resolve("input.xml")));
            wtx.moveTo(2);
            wtx.moveSubtreeToFirstChild(4).commit();
            final OutputStream out = new ByteArrayOutputStream();
            new XMLSerializer.XMLSerializerBuilder(resource, out).prettyPrint().build().call();
            System.out.println(out);
        }
    } catch (final SirixException | IOException | XMLStreamException e) {
    // LOG or do anything, the database is closed properly.
    }
}

Example 40 with SirixException

use of org.sirix.exception.SirixException in project sirix by sirixdb.

the class XQueryUsage method loadDocumentAndQueryTemporal.

/**
 * Load a document and query it (temporal enhancements).
 */
private static void loadDocumentAndQueryTemporal() throws QueryException, IOException, SirixException {
    // Initialize query context and store (implicit transaction commit).
    try (final DBStore store = DBStore.newBuilder().build()) {
        final QueryContext ctx1 = new SirixQueryContext(store);
        final CompileChain compileChain = new SirixCompileChain(store);
        final Path doc1 = generateSampleDoc("sample1");
        final URI docUri = doc1.toUri();
        // Use XQuery to load sample document into store.
        System.out.println("Loading document:");
        final String xq1 = String.format("sdb:load('mydocs.col', 'resource1', '%s')", docUri.toString());
        System.out.println(xq1);
        new XQuery(compileChain, xq1).evaluate(ctx1);
    }
    try (final DBStore store = DBStore.newBuilder().build()) {
        final QueryContext ctx = new QueryContext(store);
        System.out.println();
        System.out.println("Query loaded document:");
        final String xq3 = "let $doc:= doc('mydocs.col')/log return sdb:select-node($doc, 7) ";
        System.out.println(xq3);
        XQuery q = new XQuery(new SirixCompileChain(store), xq3);
        q.prettyPrint();
        q.serialize(ctx, System.out);
    }
    try (final DBStore store = DBStore.newBuilder().build()) {
        final QueryContext ctx = new SirixQueryContext(store);
        System.out.println();
        System.out.println("Query loaded document:");
        final String xq3 = "doc('mydocs.col')/log/all-time::*";
        System.out.println(xq3);
        XQuery q = new XQuery(new SirixCompileChain(store), xq3);
        q.prettyPrint();
        q.serialize(ctx, System.out);
    }
    // Create and commit CAS indexes on all attribute- and text-nodes.
    try (final DBStore store = DBStore.newBuilder().build()) {
        final QueryContext ctx3 = new QueryContext(store);
        System.out.println();
        System.out.println("Create a cas index for all attributes and another one for text-nodes. A third one is created for all integers:");
        final XQuery q = new XQuery(new SirixCompileChain(store), "let $doc := sdb:doc('mydocs.col', 'resource1', (), fn:boolean(1)) " + "let $casStats1 := sdb:create-cas-index($doc, 'xs:string', '//@*') " + "let $casStats2 := sdb:create-cas-index($doc, 'xs:string', '//*') " + "let $casStats3 := sdb:create-cas-index($doc, 'xs:integer', '//*') " + "return <rev>{sdb:commit($doc)}</rev>");
        q.serialize(ctx3, System.out);
        System.out.println();
        System.out.println("CAS index creation done.");
    }
    // Create and commit path index on all elements.
    try (final DBStore store = DBStore.newBuilder().build()) {
        final QueryContext ctx3 = new QueryContext(store);
        System.out.println();
        System.out.println("Create path index for all elements (all paths):");
        final XQuery q = new XQuery(new SirixCompileChain(store), "let $doc := sdb:doc('mydocs.col', 'resource1', (), fn:boolean(1)) " + "let $stats := sdb:create-path-index($doc, '//*') " + "return <rev>{sdb:commit($doc)}</rev>");
        q.serialize(ctx3, System.out);
        System.out.println();
        System.out.println("Path index creation done.");
    }
    // Create and commit name index on all elements with QName 'src' or 'msg'.
    try (final DBStore store = DBStore.newBuilder().build()) {
        final QueryContext ctx3 = new SirixQueryContext(store, CommitStrategy.EXPLICIT);
        System.out.println();
        System.out.println("Create name index for all elements with name 'src' or 'msg':");
        final XQuery q = new XQuery(new SirixCompileChain(store), "let $doc := sdb:doc('mydocs.col', 'resource1', (), fn:boolean(1)) " + "let $stats := sdb:create-name-index($doc, fn:QName((), 'src')) " + "return <rev>{sdb:commit($doc)}</rev>");
        q.serialize(ctx3, System.out);
        System.out.println();
        System.out.println("Name index creation done.");
    }
    // Query CAS index.
    try (final DBStore store = DBStore.newBuilder().build()) {
        System.out.println("");
        System.out.println("Find CAS index for all attribute values.");
        final QueryContext ctx3 = new SirixQueryContext(store);
        final String query = "let $doc := sdb:doc('mydocs.col', 'resource1') return sdb:scan-cas-index($doc, sdb:find-cas-index($doc, 'xs:string', '//@*'), 'bar', true(), 0, ())";
        final Sequence seq = new XQuery(new SirixCompileChain(store), query).execute(ctx3);
        // final Iter iter = seq.iterate();
        // for (Item item = iter.next(); item != null; item = iter.next()) {
        // System.out.println(item);
        // }
        final Comparator<Tuple> comparator = (o1, o2) -> ((Node<?>) o1).cmp((Node<?>) o2);
        final Sequence sortedSeq = new SortedNodeSequence(comparator, seq, true);
        final Iter sortedIter = sortedSeq.iterate();
        System.out.println("Sorted index entries in document order: ");
        for (Item item = sortedIter.next(); item != null; item = sortedIter.next()) {
            System.out.println(item);
        }
    }
    // Query CAS index.
    try (final DBStore store = DBStore.newBuilder().build()) {
        System.out.println("");
        System.out.println("Find CAS index for all text values which are integers between 10 and 100.");
        final QueryContext ctx3 = new SirixQueryContext(store);
        final String query = "let $doc := sdb:doc('mydocs.col', 'resource1') return sdb:scan-cas-index-range($doc, sdb:find-cas-index($doc, 'xs:integer', '//*'), 10, 100, true(), true(), ())";
        final Sequence seq = new XQuery(new SirixCompileChain(store), query).execute(ctx3);
        // final Iter iter = seq.iterate();
        // for (Item item = iter.next(); item != null; item = iter.next()) {
        // System.out.println(item);
        // }
        final Comparator<Tuple> comparator = (o1, o2) -> ((Node<?>) o1).cmp((Node<?>) o2);
        final Sequence sortedSeq = new SortedNodeSequence(comparator, seq, true);
        final Iter sortedIter = sortedSeq.iterate();
        System.out.println("Sorted index entries in document order: ");
        for (Item item = sortedIter.next(); item != null; item = sortedIter.next()) {
            System.out.println(item);
        }
    }
    // Query path index which are children of the log-element (only elements).
    try (final DBStore store = DBStore.newBuilder().build()) {
        System.out.println("");
        System.out.println("Find path index for all elements which are children of the log-element (only elements).");
        final QueryContext ctx3 = new SirixQueryContext(store);
        final DBNode node = (DBNode) new XQuery(new SirixCompileChain(store), "doc('mydocs.col')").execute(ctx3);
        final Optional<IndexDef> index = node.getTrx().getResourceManager().getRtxIndexController(node.getTrx().getRevisionNumber()).getIndexes().findPathIndex(org.brackit.xquery.util.path.Path.parse("//log/*"));
        System.out.println(index);
        // last param '()' queries whole index.
        final String query = "let $doc := sdb:doc('mydocs.col', 'resource1') " + "return sdb:scan-path-index($doc, " + index.get().getID() + ", '//log/*')";
        final Sequence seq = new XQuery(new SirixCompileChain(store), query).execute(ctx3);
        final Comparator<Tuple> comparator = (o1, o2) -> ((Node<?>) o1).cmp((Node<?>) o2);
        final Sequence sortedSeq = new SortedNodeSequence(comparator, seq, true);
        final Iter sortedIter = sortedSeq.iterate();
        System.out.println("Sorted index entries in document order: ");
        for (Item item = sortedIter.next(); item != null; item = sortedIter.next()) {
            System.out.println(item);
        }
    }
    // Query name index.
    try (final DBStore store = DBStore.newBuilder().build()) {
        System.out.println("");
        System.out.println("Query name index (src-element).");
        final QueryContext ctx3 = new QueryContext(store);
        final String query = "let $doc := sdb:doc('mydocs.col', 'resource1')" + " let $sequence := sdb:scan-name-index($doc, sdb:find-name-index($doc, fn:QName((), 'src')), fn:QName((), 'src'))" + " return sdb:sort($sequence)";
        final XQuery q = new XQuery(new SirixCompileChain(store), query);
        q.prettyPrint();
        q.serialize(ctx3, System.out);
    }
    try (final DBStore store = DBStore.newBuilder().build()) {
        final QueryContext ctx = new SirixQueryContext(store);
        System.out.println();
        System.out.println("Query loaded document:");
        final String xq3 = "doc('mydocs.col')/log/all-time::*";
        System.out.println(xq3);
        XQuery q = new XQuery(new SirixCompileChain(store), xq3);
        q.prettyPrint();
        q.serialize(ctx, System.out);
        // Serialize first version to XML
        // ($user.home$/sirix-data/output-revision-1.xml).
        final QueryContext ctx4 = new QueryContext(store);
        final String xq4 = "doc('mydocs.col', 1)";
        q = new XQuery(xq4);
        try (final PrintStream out = new PrintStream(new FileOutputStream(LOCATION.resolve("output-revision-1.xml").toFile()))) {
            q.prettyPrint().serialize(ctx4, out);
        }
        System.out.println();
        // Serialize second version to XML
        // ($user.home$/sirix-data/output-revision-1.xml).
        final QueryContext ctx5 = new SirixQueryContext(store);
        final String xq5 = "sdb:serialize(doc('mydocs.col', 2), fn:boolean(1), 'output-revision-2.xml')";
        q = new XQuery(xq5);
        q.execute(ctx5);
        System.out.println();
        // Serialize first, second and third version to XML
        // ($user.home$/sirix-data/output-revisions.xml).
        final QueryContext ctx6 = new SirixQueryContext(store);
        final String xq6 = "for $i in ((doc('mydocs.col', 1), doc('mydocs.col', 2), doc('mydocs.col', 3))) return $i";
        q = new XQuery(xq6);
        try (final PrintStream out = new PrintStream(new FileOutputStream(LOCATION.resolve("output-revisions.xml").toFile()))) {
            q.prettyPrint().serialize(ctx6, out);
        }
        System.out.println();
    }
    try (final DBStore store = DBStore.newBuilder().build()) {
        final Path doc = Paths.get("src", "main", "resources", "test.xml");
        final QueryContext ctx = new SirixQueryContext(store);
        System.out.println();
        final String xq3 = String.format("sdb:load('mycoll.col', 'mydoc.xml', '%s')", doc.toUri().toString());
        System.out.println(xq3);
        final XQuery q = new XQuery(new SirixCompileChain(store), xq3);
        q.execute(ctx);
    }
}