Examples with IndexWorker org.exist.indexing.IndexWorker used on opensource projects

Example 1 with IndexWorker

use of org.exist.indexing.IndexWorker in project exist by eXist-db.

the class IndexKeys method eval.

/*
     * (non-Javadoc)
     * 
     * @see org.exist.xquery.BasicFunction#eval(org.exist.xquery.value.Sequence[],
     *      org.exist.xquery.value.Sequence)
     */
public Sequence eval(Sequence[] args, Sequence contextSequence) throws XPathException {
    if (args[0].isEmpty()) {
        return Sequence.EMPTY_SEQUENCE;
    }
    NodeSet nodes = null;
    DocumentSet docs = null;
    Sequence qnames = null;
    if (isCalledAs("index-keys-by-qname")) {
        qnames = args[0];
        docs = contextSequence == null ? context.getStaticallyKnownDocuments() : contextSequence.getDocumentSet();
    } else {
        nodes = args[0].toNodeSet();
        docs = nodes.getDocumentSet();
    }
    final Sequence result = new ValueSequence();
    try (final FunctionReference ref = (FunctionReference) args[2].itemAt(0)) {
        int max = -1;
        if (args[3].hasOne()) {
            max = ((IntegerValue) args[3].itemAt(0)).getInt();
        }
        // if we have 5 arguments, query the user-specified index
        if (this.getArgumentCount() == 5) {
            final IndexWorker indexWorker = context.getBroker().getIndexController().getWorkerByIndexName(args[4].itemAt(0).getStringValue());
            // IndexWorker indexWorker = context.getBroker().getBrokerPool().getIndexManager().getIndexByName(args[4].itemAt(0).getStringValue()).getWorker();
            if (indexWorker == null) {
                throw new XPathException(this, "Unknown index: " + args[4].itemAt(0).getStringValue());
            }
            final Map<String, Object> hints = new HashMap<>();
            if (max != -1) {
                hints.put(IndexWorker.VALUE_COUNT, new IntegerValue(max));
            }
            if (indexWorker instanceof OrderedValuesIndex) {
                hints.put(OrderedValuesIndex.START_VALUE, args[1].getStringValue());
            } else {
                logger.warn("{} isn't an instance of org.exist.indexing.OrderedValuesIndex. Start value '{}' ignored.", indexWorker.getClass().getName(), args[1]);
            }
            if (qnames != null) {
                final List<QName> qnameList = new ArrayList<>(qnames.getItemCount());
                for (final SequenceIterator i = qnames.iterate(); i.hasNext(); ) {
                    final QNameValue qv = (QNameValue) i.nextItem();
                    qnameList.add(qv.getQName());
                }
                hints.put(QNamedKeysIndex.QNAMES_KEY, qnameList);
            }
            final Occurrences[] occur = indexWorker.scanIndex(context, docs, nodes, hints);
            // TODO : add an extra argument to pass the END_VALUE ?
            final int len = (max != -1 && occur.length > max ? max : occur.length);
            final Sequence[] params = new Sequence[2];
            ValueSequence data = new ValueSequence();
            for (int j = 0; j < len; j++) {
                params[0] = new StringValue(occur[j].getTerm().toString());
                data.add(new IntegerValue(occur[j].getOccurrences(), Type.UNSIGNED_INT));
                data.add(new IntegerValue(occur[j].getDocuments(), Type.UNSIGNED_INT));
                data.add(new IntegerValue(j + 1, Type.UNSIGNED_INT));
                params[1] = data;
                result.addAll(ref.evalFunction(Sequence.EMPTY_SEQUENCE, null, params));
                data.clear();
            }
        // no index specified: use the range index
        } else {
            final Indexable indexable = (Indexable) args[1].itemAt(0);
            ValueOccurrences[] occur = null;
            // First check for indexes defined on qname
            final QName[] allQNames = getDefinedIndexes(context.getBroker(), docs);
            if (allQNames.length > 0) {
                occur = context.getBroker().getValueIndex().scanIndexKeys(docs, nodes, allQNames, indexable);
            }
            // Also check if there's an index defined by path
            ValueOccurrences[] occur2 = context.getBroker().getValueIndex().scanIndexKeys(docs, nodes, indexable);
            // Merge the two results
            if (occur == null || occur.length == 0) {
                occur = occur2;
            } else {
                ValueOccurrences[] t = new ValueOccurrences[occur.length + occur2.length];
                System.arraycopy(occur, 0, t, 0, occur.length);
                System.arraycopy(occur2, 0, t, occur.length, occur2.length);
                occur = t;
            }
            final int len = (max != -1 && occur.length > max ? max : occur.length);
            final Sequence[] params = new Sequence[2];
            ValueSequence data = new ValueSequence();
            for (int j = 0; j < len; j++) {
                params[0] = occur[j].getValue();
                data.add(new IntegerValue(occur[j].getOccurrences(), Type.UNSIGNED_INT));
                data.add(new IntegerValue(occur[j].getDocuments(), Type.UNSIGNED_INT));
                data.add(new IntegerValue(j + 1, Type.UNSIGNED_INT));
                params[1] = data;
                result.addAll(ref.evalFunction(Sequence.EMPTY_SEQUENCE, null, params));
                data.clear();
            }
        }
    }
    logger.debug("Returning: {}", result.getItemCount());
    return result;
}

Example 2 with IndexWorker

use of org.exist.indexing.IndexWorker in project exist by eXist-db.

the class IndexKeyDocuments method eval.

public Sequence eval(Sequence[] args, Sequence contextSequence) 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);
        }
    }
    Sequence result;
    if (args[0].isEmpty()) {
        result = Sequence.EMPTY_SEQUENCE;
    } else {
        final NodeSet nodes = args[0].toNodeSet();
        final DocumentSet docs = nodes.getDocumentSet();
        if (this.getArgumentCount() == 3) {
            final IndexWorker indexWorker = context.getBroker().getIndexController().getWorkerByIndexName(args[2].itemAt(0).getStringValue());
            // IndexWorker indexWorker = context.getBroker().getBrokerPool().getIndexManager().getIndexByName(args[2].itemAt(0).getStringValue()).getWorker();
            if (indexWorker == null) {
                throw new XPathException(this, "Unknown index: " + args[2].itemAt(0).getStringValue());
            }
            final Map<String, Object> hints = new HashMap<>();
            if (indexWorker instanceof OrderedValuesIndex) {
                hints.put(OrderedValuesIndex.START_VALUE, args[1]);
            } else {
                logger.warn("{} isn't an instance of org.exist.indexing.OrderedIndexWorker. Start value '{}' ignored.", indexWorker.getClass().getName(), args[1]);
            }
            final Occurrences[] occur = indexWorker.scanIndex(context, docs, nodes, hints);
            if (occur.length == 0) {
                result = Sequence.EMPTY_SEQUENCE;
            } else {
                result = new IntegerValue(occur[0].getDocuments());
            }
        } else {
            final ValueOccurrences[] occur = context.getBroker().getValueIndex().scanIndexKeys(docs, nodes, (Indexable) args[1]);
            if (occur.length == 0) {
                result = Sequence.EMPTY_SEQUENCE;
            } else {
                result = new IntegerValue(occur[0].getDocuments());
            }
        }
    }
    if (context.getProfiler().isEnabled()) {
        context.getProfiler().end(this, "", result);
    }
    return result;
}

Example 3 with IndexWorker

use of org.exist.indexing.IndexWorker in project exist by eXist-db.

the class IndexKeyOccurrences method eval.

public Sequence eval(Sequence[] args, Sequence contextSequence) 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);
        }
    }
    Sequence result;
    if (args[0].isEmpty()) {
        result = Sequence.EMPTY_SEQUENCE;
    } else {
        final NodeSet nodes = args[0].toNodeSet();
        final DocumentSet docs = nodes.getDocumentSet();
        if (this.getArgumentCount() == 3) {
            final IndexWorker indexWorker = context.getBroker().getIndexController().getWorkerByIndexName(args[2].itemAt(0).getStringValue());
            // IndexWorker indexWorker = context.getBroker().getBrokerPool().getIndexManager().getIndexByName(args[2].itemAt(0).getStringValue()).getWorker();
            if (indexWorker == null) {
                throw new XPathException(this, "Unknown index: " + args[2].itemAt(0).getStringValue());
            }
            final Map<String, Object> hints = new HashMap<>();
            if (indexWorker instanceof OrderedValuesIndex) {
                hints.put(OrderedValuesIndex.START_VALUE, args[1]);
            } else {
                logger.warn("{} isn't an instance of org.exist.indexing.OrderedIndexWorker. Start value '{}' ignored.", indexWorker.getClass().getName(), args[1]);
            }
            final Occurrences[] occur = indexWorker.scanIndex(context, docs, nodes, hints);
            if (occur.length == 0) {
                result = Sequence.EMPTY_SEQUENCE;
            } else {
                result = new IntegerValue(occur[0].getOccurrences());
            }
        } else {
            ValueOccurrences[] occur = context.getBroker().getValueIndex().scanIndexKeys(docs, nodes, (Indexable) (args[1].itemAt(0)));
            if (occur.length == 0) {
                occur = context.getBroker().getValueIndex().scanIndexKeys(docs, nodes, null, (Indexable) (args[1].itemAt(0)));
            }
            if (occur.length == 0) {
                result = Sequence.EMPTY_SEQUENCE;
            } else {
                result = new IntegerValue(occur[0].getOccurrences());
            }
        }
    }
    if (context.getProfiler().isEnabled()) {
        context.getProfiler().end(this, "", result);
    }
    return result;
}