Examples of net.sf.saxon.expr.RoleLocator

net.sf.saxon.expr.RoleLocator
A RoleLocator identifies the role in which an expression is used, for example as the third argument of the concat() function. This information is stored in an ItemChecker or CardinalityChecker so that good diagnostics can be achieved when run-time type errors are detected.




    public void validate() throws XPathException {
        select = typeCheck("select", select);
        try {
            RoleLocator role =
                new RoleLocator(RoleLocator.INSTRUCTION, "sql:column/select", 0);
            select = TypeChecker.staticTypeCheck(select,
                        SequenceType.SINGLE_ATOMIC,
                        false, role, makeExpressionVisitor());


        } catch (XPathException err) {

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        } else {
            int slot = getSlotNumber();
            if (requiredType != null) {
                SuppliedParameterReference pref = new SuppliedParameterReference(slot);
                pref.setLocationId(staticContext.getLocationMap().allocateLocationId(getSystemId(), getLineNumber()));
                RoleLocator role = new RoleLocator(RoleLocator.PARAM, getVariableDisplayName(), 0);
                //role.setSourceLocator(new ExpressionLocation(this));
                role.setErrorCode("XTTE0590");
                conversion = TypeChecker.staticTypeCheck(
                        pref,
                        requiredType,
                        false,
                        role, makeExpressionVisitor());

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        from = typeCheck("from", from);
        count = typeCheck("count", count);


        if (select != null) {
            try {
                RoleLocator role =
                    new RoleLocator(RoleLocator.INSTRUCTION, "xsl:number/select", 0);
                //role.setSourceLocator(new ExpressionLocation(this));
                role.setErrorCode("XTTE1000");
                select = TypeChecker.staticTypeCheck(select,
                                            SequenceType.SINGLE_NODE,
                                            false, role, makeExpressionVisitor());
            } catch (XPathException err) {
                compileError(err);

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        from = typeCheck("from", from);
        count = typeCheck("count", count);


        if (select != null) {
            try {
                RoleLocator role =
                    new RoleLocator(RoleLocator.INSTRUCTION, "xsl:number/select", 0);
                select = TypeChecker.staticTypeCheck(select,
                                            SequenceType.SINGLE_NODE,
                                            false, role, getStaticContext());
            } catch (XPathException err) {
                compileError(err);

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        } catch (XPathException e) {
            compileError(e);
        }
        try {
            if (requiredType != null) {
                RoleLocator role =
                        new RoleLocator(RoleLocator.TEMPLATE_RESULT, diagnosticId, 0);
                exp = TypeChecker.staticTypeCheck(exp, requiredType, false, role, getStaticContext());
            }
        } catch (XPathException err) {
            compileError(err);
        }

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        select = typeCheck("select", select);


        if (groupBy != null) {
            groupBy = typeCheck("group-by", groupBy);
            try {
                RoleLocator role =
                    new RoleLocator(RoleLocator.INSTRUCTION, "xsl:for-each-group/group-by", 0);
                groupBy = TypeChecker.staticTypeCheck(groupBy,
                        SequenceType.ATOMIC_SEQUENCE,
                        false, role, getStaticContext());
            } catch (XPathException err) {
                compileError(err);
            }
        } else if (groupAdjacent != null) {
            groupAdjacent = typeCheck("group-adjacent", groupAdjacent);
            try {
                RoleLocator role =
                    new RoleLocator(RoleLocator.INSTRUCTION, "xsl:for-each-group/group-adjacent", 0);
                groupAdjacent = TypeChecker.staticTypeCheck(groupAdjacent,
                        SequenceType.SINGLE_ATOMIC,
                        false, role, getStaticContext());
            } catch (XPathException err) {
                compileError(err);
            }
        }


        starting = typeCheck("starting", starting);
        ending = typeCheck("ending", ending);


        if (starting != null || ending != null) {
            try {
                RoleLocator role =
                    new RoleLocator(RoleLocator.INSTRUCTION, "xsl:for-each-group/select", 0);
                select = TypeChecker.staticTypeCheck(select,
                                            SequenceType.NODE_SEQUENCE,
                                            false, role, getStaticContext());
            } catch (XPathException err) {
                compileError(err);

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        select = typeCheck("select", select);
        regex = typeCheck("regex", regex);
        flags = typeCheck("flags", flags);


        try {
            RoleLocator role =
                new RoleLocator(RoleLocator.INSTRUCTION, "xsl:analyze-string/select", 0);
            select = TypeChecker.staticTypeCheck(select, SequenceType.SINGLE_STRING, false, role, getStaticContext());


            role =
                new RoleLocator(RoleLocator.INSTRUCTION, "xsl:analyze-string/regex", 0);
            regex = TypeChecker.staticTypeCheck(regex, SequenceType.SINGLE_STRING, false, role, getStaticContext());


            role =
                new RoleLocator(RoleLocator.INSTRUCTION, "xsl:analyze-string/flags", 0);
            flags = TypeChecker.staticTypeCheck(flags, SequenceType.SINGLE_STRING, false, role, getStaticContext());
        } catch (XPathException err) {
            compileError(err);
        }

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            }
            comp = getCaseOrderComparer(base, caseOrderX);
        }


        if (dataTypeExpression==null || dataTypeExpression instanceof EmptySequence) {
            RoleLocator role =
                new RoleLocator(RoleLocator.INSTRUCTION, "xsl:sort/sort-key", 0);
            sortKey = new CardinalityChecker(sortKey, StaticProperty.ALLOWS_ZERO_OR_ONE, role);
            comp = new AtomicSortComparer(comp);
        } else {
            String dataType = ((StringValue)dataTypeExpression).getStringValue();
            if (dataType.equals("text")) {

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     */


    protected void checkAgainstRequiredType(SequenceType required)
    throws TransformerConfigurationException {
        try {
            RoleLocator role = new RoleLocator(RoleLocator.VARIABLE, getVariableName(), 0);
            if (required!=null) {
                // check that the expression is consistent with the required type
                if (select != null) {
                    select = TypeChecker.staticTypeCheck(select, required, false, role, getStaticContext());
                } else {

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                Block block = new Block();
                compileChildren(exec, block, true);
                select = block;
                try {
                    if (requiredType != null) {
                        RoleLocator role =
                                new RoleLocator(RoleLocator.VARIABLE, getVariableName(), 0);
                        select = TypeChecker.staticTypeCheck(select, requiredType, false, role, getStaticContext());
                    }
                } catch (XPathException err) {
                    err.setLocator(this);
                    compileError(err);

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Related Classes of net.sf.saxon.expr.RoleLocator

net.sf.saxon.option.sql.SQLColumn

net.sf.saxon.sort.FixedSortKeyDefinition

net.sf.saxon.sql.SQLColumn

net.sf.saxon.style.XSLAnalyzeString

net.sf.saxon.style.XSLForEachGroup

net.sf.saxon.style.XSLGeneralVariable

net.sf.saxon.style.XSLNumber

net.sf.saxon.style.XSLParam

net.sf.saxon.style.XSLTemplate

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