Package org.apache.vxquery.functions

Examples of org.apache.vxquery.functions.Function

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            Mutable<ILogicalExpression> argFirstM, StaticContext dCtx) {
        ILogicalExpression argFirstLe = argFirstM.getValue();
        switch (argFirstLe.getExpressionTag()) {
            case FUNCTION_CALL:
                // Only process defined functions.
                Function function = ExpressionToolbox.getBuiltIn(argFirstM);
                if (function == null) {
                    return null;
                } else if (function.getFunctionIdentifier().equals(BuiltinOperators.CAST.getFunctionIdentifier())) {
                    // Special case since case has multiple type outputs.
                    return ExpressionToolbox.getTypeExpressionTypeArgument(argFirstM, dCtx);
                } else {
                    return function.getSignature().getReturnType();
                }
            case CONSTANT:
                // Consider constant values.
                ConstantExpression constantExpression = (ConstantExpression) argFirstLe;
                VXQueryConstantValue constantValue = (VXQueryConstantValue) constantExpression.getValue();
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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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                for (Mutable<ILogicalExpression> argExpr : functionCall.getArguments()) {
                    argProperties.add(propagateDocumentOrder(argExpr.getValue(), variableMap));
                }

                // Propagate the property.
                Function func = (Function) functionCall.getFunctionInfo();
                documentOrder = func.getDocumentOrderPropagationPolicy().propagate(argProperties);
                break;
            case VARIABLE:
                VariableReferenceExpression variableReference = (VariableReferenceExpression) expr;
                int argVariableId = variableReference.getVariableReference().getId();
                documentOrder = variableMap.get(argVariableId);
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                for (Mutable<ILogicalExpression> argExpr : functionCall.getArguments()) {
                    argProperties.add(propagateUniqueNodes(argExpr.getValue(), variableMap));
                }

                // Propagate the property.
                Function func = (Function) functionCall.getFunctionInfo();
                uniqueNodes = func.getUniqueNodesPropagationPolicy().propagate(argProperties);
                break;
            case VARIABLE:
                VariableReferenceExpression variableReference = (VariableReferenceExpression) expr;
                int argVariableId = variableReference.getVariableReference().getId();
                uniqueNodes = variableMap.get(argVariableId);
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        return null;
    }

    @Override
    public void registerFunction(Function function) {
        Function fns[] = functionMap.get(function.getName());
        int arity = function.getSignature().getArity();
        if (fns == null) {
            fns = new Function[arity + 1];
            fns[arity] = function;
            functionMap.put(function.getName(), fns);
        } else if (fns.length <= arity) {
            Function newFns[] = new Function[arity + 1];
            System.arraycopy(fns, 0, newFns, 0, fns.length);
            newFns[arity] = function;
            functionMap.put(function.getName(), newFns);
        } else {
            fns[arity] = function;
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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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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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