Package org.apache.vxquery.functions

Examples of org.apache.vxquery.functions.Function

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            throws SystemException {
        return translateExpression(ee.getExpression(), tCtx);
    }

    private LogicalVariable translateInfixExprNode(TranslationContext tCtx, InfixExprNode ie) throws SystemException {
        Function operator = getOperator(ie.getOperator());
        Signature sign = operator.getSignature();
        LogicalVariable varLeft = translateExpression(ie.getLeftExpr(), tCtx);
        LogicalVariable varRight = translateExpression(ie.getRightExpr(), tCtx);
        ILogicalExpression arg1 = normalize(vre(varLeft), sign.getParameterType(0));
        ILogicalExpression arg2 = normalize(vre(varRight), sign.getParameterType(1));
        if (BuiltinOperators.EXCEPT.equals(operator) || BuiltinOperators.INTERSECT.equals(operator)) {
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                    AxisStepNode.Axis axis = axisNode.getAxis();
                    if (ctxExpr == null) {
                        ctxExpr = vre(tCtx.varScope.lookupVariable(XMLQueryCompilerConstants.DOT_VAR_NAME)
                                .getLogicalVariable());
                    }
                    Function axisFn = translateAxis(axis);
                    NodeType nt = translateNodeTest(axis, axisNode.getNodeTest());
                    int ntCode = currCtx.encodeSequenceType(SequenceType.create(nt, Quantifier.QUANT_ONE));
                    ctxExpr = sfce(axisFn,
                            treat(ctxExpr, SequenceType.create(AnyNodeType.INSTANCE, Quantifier.QUANT_STAR)),
                            ce(SequenceType.create(BuiltinTypeRegistry.XS_INT, Quantifier.QUANT_ONE), ntCode));
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                                pType = createSequenceType(pNode.getType());
                            }
                            paramTypes[i] = Pair.<QName, SequenceType> of(pName, pType);
                        }
                        Signature sign = new Signature(rType, paramTypes);
                        Function f = external ? new ExternalFunction(name, sign) : new UserDefinedXQueryFunction(name,
                                sign, null);
                        moduleCtx.registerFunction(f);
                        break;
                    }
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    }

    private LogicalVariable translateValidateExprNode(TranslationContext tCtx, ValidateExprNode vNode)
            throws SystemException {
        XQueryConstants.ValidationMode mode = vNode.getMode();
        Function fn = mode == null || XQueryConstants.ValidationMode.STRICT.equals(mode) ? BuiltinOperators.VALIDATE_STRICT
                : BuiltinOperators.VALIDATE_LAX;
        LogicalVariable lVar = createAssignment(sfce(fn, vre(translateExpression(vNode.getExpr(), tCtx))), tCtx);
        return lVar;
    }
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        if (BuiltinFunctions.FN_LAST_QNAME.equals(fName)) {
            XQueryVariable var = tCtx.varScope.lookupVariable(XMLQueryCompilerConstants.LAST_VAR_NAME);
            return var.getLogicalVariable();
        }
        int nArgs = fnNode.getArguments().size();
        Function fn = moduleCtx.lookupFunction(fName, nArgs);
        if (fn != null && fn.useContextImplicitly()) {
            args.add(tCtx.varScope.lookupVariable(XMLQueryCompilerConstants.DOT_VAR_NAME).getLogicalVariable());
            fn = moduleCtx.lookupFunction(fName, nArgs + 1);
        }
        if (fn == null) {
            Function[] fns = moduleCtx.lookupFunctions(fName);
            if (fns != null) {
                for (int i = 0; i < fns.length && i <= nArgs; ++i) {
                    if (fns[i] != null && fns[i].getSignature().isVarArgs()) {
                        fn = fns[i];
                        break;
                    }
                }
            }
        }
        if (fn == null) {
            throw new SystemException(ErrorCode.XPST0017, fnNode.getName().getSourceLocation());
        }
        Signature sign = fn.getSignature();
        List<Mutable<ILogicalExpression>> argExprs = new ArrayList<Mutable<ILogicalExpression>>();
        for (int i = 0; i < args.size(); ++i) {
            SequenceType argType = sign.getParameterType(i);
            argExprs.add(mutable(normalize(vre(args.get(i)), argType)));
        }
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            throws SystemException {
        return translateExpression(ee.getExpression(), tCtx);
    }

    private LogicalVariable translateInfixExprNode(TranslationContext tCtx, InfixExprNode ie) throws SystemException {
        Function operator = getOperator(ie.getOperator());
        Signature sign = operator.getSignature();
        LogicalVariable varLeft = translateExpression(ie.getLeftExpr(), tCtx);
        LogicalVariable varRight = translateExpression(ie.getRightExpr(), tCtx);
        ILogicalExpression arg1 = normalize(vre(varLeft), sign.getParameterType(0));
        ILogicalExpression arg2 = normalize(vre(varRight), sign.getParameterType(1));
        if (BuiltinOperators.EXCEPT.equals(operator) || BuiltinOperators.INTERSECT.equals(operator)) {
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                    AxisStepNode.Axis axis = axisNode.getAxis();
                    if (ctxExpr == null) {
                        ctxExpr = vre(tCtx.varScope.lookupVariable(XMLQueryCompilerConstants.DOT_VAR_NAME)
                                .getLogicalVariable());
                    }
                    Function axisFn = translateAxis(axis);
                    NodeType nt = translateNodeTest(axis, axisNode.getNodeTest());
                    int ntCode = currCtx.encodeSequenceType(SequenceType.create(nt, Quantifier.QUANT_ONE));
                    ctxExpr = sfce(axisFn,
                            treat(ctxExpr, SequenceType.create(AnyNodeType.INSTANCE, Quantifier.QUANT_STAR)),
                            ce(SequenceType.create(BuiltinTypeRegistry.XS_INT, Quantifier.QUANT_ONE), ntCode));
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            ILogicalExpression logicalExpression2 = (ILogicalExpression) unnest2.getExpressionRef().getValue();
            if (logicalExpression2.getExpressionTag() != LogicalExpressionTag.FUNCTION_CALL) {
                return false;
            }
            AbstractFunctionCallExpression functionCall2 = (AbstractFunctionCallExpression) logicalExpression2;
            Function functionInfo2 = (Function) functionCall2.getFunctionInfo();
            if (!functionInfo2.hasScalarEvaluatorFactory()) {
                return false;
            }

            // Find unnest2 variable in unnest1
            Mutable<ILogicalExpression> unnest1Arg = ExpressionToolbox.findVariableExpression(
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Related Classes of org.apache.vxquery.functions.Function

  • edu.uci.ics.hyracks.algebricks.core.algebra.functions.FunctionIdentifier
  • org.apache.vxquery.compiler.algebricks.VXQueryExpressionRuntimeProvider
  • org.apache.vxquery.compiler.rewriter.rules.ConsolidateUnnestsRule
  • org.apache.vxquery.compiler.rewriter.rules.ConvertAssignToUnnestRule
  • org.apache.vxquery.compiler.rewriter.rules.propagationpolicies.documentorder.DocumentOrderYESPropagationPolicy
  • org.apache.vxquery.compiler.rewriter.rules.propagationpolicies.uniquenodes.UniqueNodesYESPropagationPolicy
  • org.apache.vxquery.compiler.rewriter.rules.RemoveUnusedSortDistinctNodesRule
  • org.apache.vxquery.compiler.rewriter.rules.util.ExpressionToolbox
  • org.apache.vxquery.context.StaticContextImpl
  • org.apache.vxquery.xmlquery.translator.XMLQueryTranslator
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