Package org.apache.vxquery.functions

Examples of org.apache.vxquery.functions.Function

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                int tupleFieldIndex = inputSchemas[0].findVariable(vrExpr.getVariableReference());
                return new TupleFieldEvaluatorFactory(tupleFieldIndex);

            case FUNCTION_CALL:
                ScalarFunctionCallExpression fcExpr = (ScalarFunctionCallExpression) expr;
                Function fn = (Function) fcExpr.getFunctionInfo();

                IScalarEvaluatorFactory[] argFactories = createArgumentEvaluatorFactories(env, inputSchemas, context,
                        fcExpr.getArguments());

                try {
                    return fn.createScalarEvaluatorFactory(argFactories);
                } catch (SystemException e) {
                    throw new AlgebricksException(e);
                }
        }
        throw new UnsupportedOperationException("Cannot create runtime for " + expr.getExpressionTag());
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    @Override
    public IAggregateEvaluatorFactory createAggregateFunctionFactory(AggregateFunctionCallExpression expr,
            IVariableTypeEnvironment env, IOperatorSchema[] inputSchemas, JobGenContext context)
            throws AlgebricksException {
        Function fn = (Function) expr.getFunctionInfo();

        IScalarEvaluatorFactory[] argFactories = createArgumentEvaluatorFactories(env, inputSchemas, context,
                expr.getArguments());
        try {
            return fn.createAggregateEvaluatorFactory(argFactories);
        } catch (SystemException e) {
            throw new AlgebricksException(e);
        }
    }
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    @Override
    public IUnnestingEvaluatorFactory createUnnestingFunctionFactory(UnnestingFunctionCallExpression expr,
            IVariableTypeEnvironment env, IOperatorSchema[] inputSchemas, JobGenContext context)
            throws AlgebricksException {
        Function fn = (Function) expr.getFunctionInfo();

        IScalarEvaluatorFactory[] argFactories = createArgumentEvaluatorFactories(env, inputSchemas, context,
                expr.getArguments());
        try {
            return fn.createUnnestingEvaluatorFactory(argFactories);
        } catch (SystemException e) {
            throw new AlgebricksException(e);
        }
    }
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        ILogicalExpression logicalExpression2 = (ILogicalExpression) assign.getExpressions().get(0).getValue();
        if (logicalExpression2.getExpressionTag() != LogicalExpressionTag.FUNCTION_CALL) {
            return false;
        }
        AbstractFunctionCallExpression functionCall2 = (AbstractFunctionCallExpression) logicalExpression2;
        Function functionInfo2 = (Function) functionCall2.getFunctionInfo();
        if (!functionInfo2.hasUnnestingEvaluatorFactory()) {
            return false;
        }
       
        // TODO add checks for variables used that have now been removed.
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                int tupleFieldIndex = inputSchemas[0].findVariable(vrExpr.getVariableReference());
                return new TupleFieldEvaluatorFactory(tupleFieldIndex);

            case FUNCTION_CALL:
                ScalarFunctionCallExpression fcExpr = (ScalarFunctionCallExpression) expr;
                Function fn = (Function) fcExpr.getFunctionInfo();

                IScalarEvaluatorFactory[] argFactories = createArgumentEvaluatorFactories(env, inputSchemas, context,
                        fcExpr.getArguments());

                try {
                    return fn.createScalarEvaluatorFactory(argFactories);
                } catch (SystemException e) {
                    throw new AlgebricksException(e);
                }
        }
        throw new UnsupportedOperationException("Cannot create runtime for " + expr.getExpressionTag());
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    @Override
    public IAggregateEvaluatorFactory createAggregateFunctionFactory(AggregateFunctionCallExpression expr,
            IVariableTypeEnvironment env, IOperatorSchema[] inputSchemas, JobGenContext context)
            throws AlgebricksException {
        Function fn = (Function) expr.getFunctionInfo();

        IScalarEvaluatorFactory[] argFactories = createArgumentEvaluatorFactories(env, inputSchemas, context,
                expr.getArguments());
        try {
            return fn.createAggregateEvaluatorFactory(argFactories);
        } catch (SystemException e) {
            throw new AlgebricksException(e);
        }
    }
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    @Override
    public IUnnestingEvaluatorFactory createUnnestingFunctionFactory(UnnestingFunctionCallExpression expr,
            IVariableTypeEnvironment env, IOperatorSchema[] inputSchemas, JobGenContext context)
            throws AlgebricksException {
        Function fn = (Function) expr.getFunctionInfo();

        IScalarEvaluatorFactory[] argFactories = createArgumentEvaluatorFactories(env, inputSchemas, context,
                expr.getArguments());
        try {
            return fn.createUnnestingEvaluatorFactory(argFactories);
        } catch (SystemException e) {
            throw new AlgebricksException(e);
        }
    }
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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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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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