Examples with Item org.brackit.xquery.xdm.Item used on opensource projects

Example 1 with Item

use of org.brackit.xquery.xdm.Item in project sirix by sirixdb.

the class ScanCASIndex method execute.

@Override
public Sequence execute(StaticContext sctx, QueryContext ctx, Sequence[] args) throws QueryException {
    final DBNode doc = (DBNode) args[0];
    final XdmNodeReadTrx rtx = doc.getTrx();
    final IndexController controller = rtx.getResourceManager().getRtxIndexController(rtx.getRevisionNumber());
    if (controller == null) {
        throw new QueryException(new QNm("Document not found: " + ((Str) args[1]).stringValue()));
    }
    final int idx = FunUtil.getInt(args, 1, "$idx-no", -1, null, true);
    final IndexDef indexDef = controller.getIndexes().getIndexDef(idx, IndexType.CAS);
    if (indexDef == null) {
        throw new QueryException(SDBFun.ERR_INDEX_NOT_FOUND, "Index no %s for collection %s and document %s not found.", idx, doc.getCollection().getName(), doc.getTrx().getResourceManager().getResourceConfig().getResource().getFileName().toString());
    }
    if (indexDef.getType() != IndexType.CAS) {
        throw new QueryException(SDBFun.ERR_INVALID_INDEX_TYPE, "Index no %s for collection %s and document %s is not a CAS index.", idx, doc.getCollection().getName(), doc.getTrx().getResourceManager().getResourceConfig().getResource().getFileName().toString());
    }
    final Type keyType = indexDef.getContentType();
    final Atomic key = Cast.cast(sctx, (Atomic) args[2], keyType, true);
    FunUtil.getBoolean(args, 3, "$include-low-key", true, true);
    final int[] searchModes = new int[] { -2, -1, 0, 1, 2 };
    final int searchMode = FunUtil.getInt(args, 4, "$search-mode", 0, searchModes, true);
    final SearchMode mode;
    switch(searchMode) {
        case -2:
            mode = SearchMode.LESS;
            break;
        case -1:
            mode = SearchMode.LESS_OR_EQUAL;
            break;
        case 0:
            mode = SearchMode.EQUAL;
            break;
        case 1:
            mode = SearchMode.GREATER;
            break;
        case 2:
            mode = SearchMode.GREATER_OR_EQUAL;
            break;
        default:
            // May never happen.
            mode = SearchMode.EQUAL;
    }
    final String paths = FunUtil.getString(args, 5, "$paths", null, null, false);
    final CASFilter filter = (paths != null) ? controller.createCASFilter(paths.split(";"), key, mode, new PCRCollectorImpl(rtx)) : controller.createCASFilter(new String[] {}, key, mode, new PCRCollectorImpl(rtx));
    final IndexController ic = controller;
    final DBNode node = doc;
    return new LazySequence() {

        @Override
        public Iter iterate() {
            return new BaseIter() {

                Stream<?> s;

                @Override
                public Item next() throws QueryException {
                    if (s == null) {
                        s = new SirixNodeKeyStream(ic.openCASIndex(node.getTrx().getPageTrx(), indexDef, filter), node.getCollection(), node.getTrx());
                    }
                    return (Item) s.next();
                }

                @Override
                public void close() {
                    if (s != null) {
                        s.close();
                    }
                }
            };
        }
    };
}

Example 2 with Item

use of org.brackit.xquery.xdm.Item in project sirix by sirixdb.

the class ScanCASIndexRange method execute.

@Override
public Sequence execute(StaticContext sctx, QueryContext ctx, Sequence[] args) throws QueryException {
    final DBNode doc = (DBNode) args[0];
    final XdmNodeReadTrx rtx = doc.getTrx();
    final IndexController controller = rtx.getResourceManager().getRtxIndexController(rtx.getRevisionNumber());
    if (controller == null) {
        throw new QueryException(new QNm("Document not found: " + ((Str) args[1]).stringValue()));
    }
    final int idx = FunUtil.getInt(args, 1, "$idx-no", -1, null, true);
    final IndexDef indexDef = controller.getIndexes().getIndexDef(idx, IndexType.CAS);
    if (indexDef == null) {
        throw new QueryException(SDBFun.ERR_INDEX_NOT_FOUND, "Index no %s for collection %s and document %s not found.", idx, doc.getCollection().getName(), doc.getTrx().getResourceManager().getResourceConfig().getResource().getFileName().toString());
    }
    if (indexDef.getType() != IndexType.CAS) {
        throw new QueryException(SDBFun.ERR_INVALID_INDEX_TYPE, "Index no %s for collection %s and document %s is not a CAS index.", idx, doc.getCollection().getName(), doc.getTrx().getResourceManager().getResourceConfig().getResource().getFileName().toString());
    }
    final Type keyType = indexDef.getContentType();
    final Atomic min = Cast.cast(sctx, (Atomic) args[2], keyType, true);
    final Atomic max = Cast.cast(sctx, (Atomic) args[3], keyType, true);
    final boolean incMin = FunUtil.getBoolean(args, 4, "$include-low-key", true, true);
    final boolean incMax = FunUtil.getBoolean(args, 5, "$include-high-key", true, true);
    final String paths = FunUtil.getString(args, 6, "$paths", null, null, false);
    final String[] pathArray = paths == null ? new String[] {} : paths.split(";");
    final CASFilterRange filter = controller.createCASFilterRange(pathArray, min, max, incMin, incMax, new PCRCollectorImpl(rtx));
    final IndexController ic = controller;
    final DBNode node = doc;
    return new LazySequence() {

        @Override
        public Iter iterate() {
            return new BaseIter() {

                Stream<?> s;

                @Override
                public Item next() throws QueryException {
                    if (s == null) {
                        s = new SirixNodeKeyStream(ic.openCASIndex(node.getTrx().getPageTrx(), indexDef, filter), node.getCollection(), node.getTrx());
                    }
                    return (Item) s.next();
                }

                @Override
                public void close() {
                    if (s != null) {
                        s.close();
                    }
                }
            };
        }
    };
}

Example 3 with Item

use of org.brackit.xquery.xdm.Item in project sirix by sirixdb.

the class ScanPathIndex method execute.

@Override
public Sequence execute(StaticContext sctx, QueryContext ctx, Sequence[] args) throws QueryException {
    final DBNode doc = ((DBNode) args[0]);
    final XdmNodeReadTrx rtx = doc.getTrx();
    final IndexController controller = rtx.getResourceManager().getRtxIndexController(rtx.getRevisionNumber());
    if (controller == null) {
        throw new QueryException(new QNm("Document not found: " + ((Str) args[1]).stringValue()));
    }
    final int idx = FunUtil.getInt(args, 1, "$idx-no", -1, null, true);
    final IndexDef indexDef = controller.getIndexes().getIndexDef(idx, IndexType.PATH);
    if (indexDef == null) {
        throw new QueryException(SDBFun.ERR_INDEX_NOT_FOUND, "Index no %s for collection %s and document %s not found.", idx, doc.getCollection().getName(), doc.getTrx().getResourceManager().getResourceConfig().getResource().getFileName().toString());
    }
    if (indexDef.getType() != IndexType.PATH) {
        throw new QueryException(SDBFun.ERR_INVALID_INDEX_TYPE, "Index no %s for collection %s and document %s is not a path index.", idx, doc.getCollection().getName(), doc.getTrx().getResourceManager().getResourceConfig().getResource().getFileName().toString());
    }
    final String paths = FunUtil.getString(args, 2, "$paths", null, null, false);
    final PathFilter filter = (paths != null) ? controller.createPathFilter(paths.split(";"), doc.getTrx()) : null;
    final IndexController ic = controller;
    final DBNode node = doc;
    return new LazySequence() {

        @Override
        public Iter iterate() {
            return new BaseIter() {

                Stream<?> s;

                @Override
                public Item next() throws QueryException {
                    if (s == null) {
                        s = new SirixNodeKeyStream(ic.openPathIndex(node.getTrx().getPageTrx(), indexDef, filter), node.getCollection(), node.getTrx());
                    }
                    return (Item) s.next();
                }

                @Override
                public void close() {
                    if (s != null) {
                        s.close();
                    }
                }
            };
        }
    };
}

Example 4 with Item

use of org.brackit.xquery.xdm.Item 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);
    }
}

Example 5 with Item

use of org.brackit.xquery.xdm.Item in project sirix by sirixdb.

the class ScanNameIndex method execute.

@Override
public Sequence execute(StaticContext sctx, QueryContext ctx, Sequence[] args) throws QueryException {
    final DBNode doc = ((DBNode) args[0]);
    final XdmNodeReadTrx rtx = doc.getTrx();
    final IndexController controller = rtx.getResourceManager().getRtxIndexController(rtx.getRevisionNumber());
    if (controller == null) {
        throw new QueryException(new QNm("Document not found: " + ((Str) args[1]).stringValue()));
    }
    final int idx = FunUtil.getInt(args, 1, "$idx-no", -1, null, true);
    final IndexDef indexDef = controller.getIndexes().getIndexDef(idx, IndexType.NAME);
    if (indexDef == null) {
        throw new QueryException(SDBFun.ERR_INDEX_NOT_FOUND, "Index no %s for collection %s and document %s not found.", idx, doc.getCollection().getName(), doc.getTrx().getResourceManager().getResourceConfig().getResource().getFileName().toString());
    }
    if (indexDef.getType() != IndexType.NAME) {
        throw new QueryException(SDBFun.ERR_INVALID_INDEX_TYPE, "Index no %s for collection %s and document %s is not a path index.", idx, doc.getCollection().getName(), doc.getTrx().getResourceManager().getResourceConfig().getResource().getFileName().toString());
    }
    final String names = FunUtil.getString(args, 2, "$names", null, null, false);
    final NameFilter filter = (names != null) ? controller.createNameFilter(names.split(";")) : null;
    final IndexController ic = controller;
    final DBNode node = doc;
    return new LazySequence() {

        @Override
        public Iter iterate() {
            return new BaseIter() {

                Stream<?> s;

                @Override
                public Item next() throws QueryException {
                    if (s == null) {
                        s = new SirixNodeKeyStream(ic.openNameIndex(node.getTrx().getPageTrx(), indexDef, filter), node.getCollection(), node.getTrx());
                    }
                    return (Item) s.next();
                }

                @Override
                public void close() {
                    if (s != null) {
                        s.close();
                    }
                }
            };
        }
    };
}