Examples with Item org.exist.xquery.value.Item used on opensource projects

Example 61 with Item

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

the class FunFloor method eval.

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();
    Sequence result;
    final Sequence seq = getArgument(0).eval(contextSequence, contextItem);
    if (seq.isEmpty()) {
        result = Sequence.EMPTY_SEQUENCE;
    } else {
        final Item item = seq.itemAt(0);
        NumericValue value;
        if (item instanceof NumericValue) {
            value = (NumericValue) item;
        } else {
            value = (NumericValue) item.convertTo(Type.NUMBER);
        }
        result = value.floor();
    }
    if (context.getProfiler().isEnabled()) {
        context.getProfiler().end(this, "", result);
    }
    return result;
}

Example 62 with Item

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

the class FunHigherOrderFun method eval.

@Override
public Sequence eval(final Sequence[] args, final Sequence contextSequence) throws XPathException {
    Sequence result = new ValueSequence();
    if (isCalledAs("for-each")) {
        try (final FunctionReference ref = (FunctionReference) args[1].itemAt(0)) {
            ref.analyze(cachedContextInfo);
            if (funcRefHasDifferentArity(ref, 1)) {
                throw new XPathException(this, ErrorCodes.XPTY0004, "The supplied function (" + ref.getStringValue() + ") has " + ref.getSignature().getArgumentCount() + " arguments - expected 1");
            }
            for (final SequenceIterator i = args[0].iterate(); i.hasNext(); ) {
                final Item item = i.nextItem();
                final Sequence r = ref.evalFunction(null, null, new Sequence[] { item.toSequence() });
                result.addAll(r);
            }
        }
    } else if (isCalledAs("filter")) {
        final FunctionReference refParam;
        final Sequence seq;
        // Hack: switch parameters for backwards compatibility
        if (Type.subTypeOf(args[1].getItemType(), Type.FUNCTION_REFERENCE)) {
            refParam = (FunctionReference) args[1].itemAt(0);
            seq = args[0];
        } else {
            refParam = (FunctionReference) args[0].itemAt(0);
            seq = args[1];
        }
        try (final FunctionReference ref = refParam) {
            ref.analyze(cachedContextInfo);
            if (funcRefHasDifferentArity(ref, 1)) {
                throw new XPathException(this, ErrorCodes.XPTY0004, "The supplied function (" + ref.getStringValue() + ") has " + ref.getSignature().getArgumentCount() + " arguments - expected 1");
            }
            for (final SequenceIterator i = seq.iterate(); i.hasNext(); ) {
                final Item item = i.nextItem();
                final Sequence r = ref.evalFunction(null, null, new Sequence[] { item.toSequence() });
                // two pending tests in exist-core/src/test/xquery/xquery3/fnHigherOrderFunctions.xql
                if (r.effectiveBooleanValue()) {
                    result.add(item);
                }
            }
        }
    } else if (isCalledAs("fold-left")) {
        try (final FunctionReference ref = (FunctionReference) args[2].itemAt(0)) {
            ref.analyze(cachedContextInfo);
            if (funcRefHasDifferentArity(ref, 2)) {
                throw new XPathException(this, ErrorCodes.XPTY0004, "The supplied function (" + ref.getStringValue() + ") has " + ref.getSignature().getArgumentCount() + " arguments - expected 2");
            }
            final Sequence seq = args[0];
            final Sequence zero = args[1];
            result = foldLeft(ref, zero, seq.iterate());
        }
    } else if (isCalledAs("fold-right")) {
        try (final FunctionReference ref = (FunctionReference) args[2].itemAt(0)) {
            ref.analyze(cachedContextInfo);
            if (funcRefHasDifferentArity(ref, 2)) {
                throw new XPathException(this, ErrorCodes.XPTY0004, "The supplied function (" + ref.getStringValue() + ") has " + ref.getSignature().getArgumentCount() + " arguments - expected 2");
            }
            final Sequence zero = args[1];
            final Sequence seq = args[0];
            if (seq instanceof ValueSequence) {
                result = foldRightNonRecursive(ref, zero, ((ValueSequence) seq).iterateInReverse());
            } else if (seq instanceof RangeSequence) {
                result = foldRightNonRecursive(ref, zero, ((RangeSequence) seq).iterateInReverse());
            } else {
                result = foldRight(ref, zero, seq);
            }
        }
    } else if (isCalledAs("for-each-pair")) {
        try (final FunctionReference ref = (FunctionReference) args[2].itemAt(0)) {
            ref.analyze(cachedContextInfo);
            if (funcRefHasDifferentArity(ref, 2)) {
                throw new XPathException(this, ErrorCodes.XPTY0004, "The supplied function (" + ref.getStringValue() + ") has " + ref.getSignature().getArgumentCount() + " arguments - expected 2");
            }
            final SequenceIterator i1 = args[0].iterate();
            final SequenceIterator i2 = args[1].iterate();
            while (i1.hasNext() && i2.hasNext()) {
                final Sequence r = ref.evalFunction(null, null, new Sequence[] { i1.nextItem().toSequence(), i2.nextItem().toSequence() });
                result.addAll(r);
            }
        }
    } else if (isCalledAs("apply")) {
        try (final FunctionReference ref = (FunctionReference) args[0].itemAt(0)) {
            ref.analyze(cachedContextInfo);
            final ArrayType array = (ArrayType) args[1].itemAt(0);
            if (funcRefHasDifferentArity(ref, array.getSize())) {
                throw new XPathException(this, ErrorCodes.FOAP0001, "Number of arguments supplied to fn:apply does not match function signature. Expected: " + ref.getSignature().getArgumentCount() + ", got: " + array.getSize());
            }
            final Sequence[] fargs = array.toArray();
            return ref.evalFunction(null, null, fargs);
        }
    }
    return result;
}

Example 63 with Item

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

the class FunReverse method eval.

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());
        }
    }
    Sequence result;
    final Sequence seq = getArguments(contextSequence, contextItem)[0];
    if (seq.isEmpty()) {
        result = Sequence.EMPTY_SEQUENCE;
    } else {
        final Sequence tmp = new ValueSequence();
        Item item;
        for (final SequenceIterator i = seq.iterate(); i.hasNext(); ) {
            item = i.nextItem();
            tmp.add(item);
        }
        result = new ValueSequence();
        for (int i = seq.getItemCount() - 1; i >= 0; i--) {
            result.add(tmp.itemAt(i));
        }
    }
    if (context.getProfiler().isEnabled()) {
        context.getProfiler().end(this, "", result);
    }
    return result;
}

Example 64 with Item

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

the class FunRound method eval.

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();
    }
    Sequence result;
    final Sequence seq = getArgument(0).eval(contextSequence, contextItem);
    if (seq.isEmpty()) {
        result = Sequence.EMPTY_SEQUENCE;
    } else {
        final Item item = seq.itemAt(0);
        NumericValue value;
        if (item instanceof NumericValue) {
            value = (NumericValue) item;
        } else {
            value = (NumericValue) item.convertTo(Type.NUMBER);
        }
        result = value.round();
    }
    if (context.getProfiler().isEnabled()) {
        context.getProfiler().end(this, "", result);
    }
    return result;
}

Example 65 with Item

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

the class FunNilled 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 Item arg = args[0].itemAt(0);
        if (!Type.subTypeOf(arg.getType(), Type.ELEMENT)) {
            result = Sequence.EMPTY_SEQUENCE;
        } else {
            final Node n = ((NodeValue) arg).getNode();
            if (n.hasAttributes()) {
                final Node nilled = n.getAttributes().getNamedItemNS(Namespaces.SCHEMA_INSTANCE_NS, "nil");
                if (nilled != null) {
                    result = new BooleanValue(nilled.getNodeValue().equals("true"));
                } else {
                    result = BooleanValue.FALSE;
                }
            } else {
                result = BooleanValue.FALSE;
            }
        }
    }
    if (context.getProfiler().isEnabled()) {
        context.getProfiler().end(this, "", result);
    }
    return result;
}