private ConstraintImpl parseConditionFunctionIf()

in oak-core/src/main/java/org/apache/jackrabbit/oak/query/SQL2Parser.java [550:673]
118 lines of code
24 McCabe index (conditional complexity)

    private ConstraintImpl parseConditionFunctionIf(String functionName) throws ParseException {
        ConstraintImpl c;
        if ("CONTAINS".equalsIgnoreCase(functionName)) {
            if (readIf("*")) {
                // strictly speaking, CONTAINS(*, ...) is not supported
                // according to the spec:
                // "If only one selector exists in this query, explicit
                // specification of the selectorName preceding the
                // propertyName is optional"
                // but we anyway support it
                read(",");
                c = factory.fullTextSearch(
                        getOnlySelectorName(), null, parseStaticOperand());
            } else if (readIf(".")) {
                if (!supportSQL1) {
                    throw getSyntaxError("selector name, property name, or *");
                }
                read(",");
                c = factory.fullTextSearch(
                        getOnlySelectorName(), null, parseStaticOperand());
            } else {
                String name = readName();
                if (readIf(".")) {
                    if (readIf("*")) {
                        read(",");
                        c = factory.fullTextSearch(
                                name, null, parseStaticOperand());
                    } else {
                        String selector = name;
                        name = readName();
                        read(",");
                        c = factory.fullTextSearch(
                                selector, name, parseStaticOperand());
                    }
                } else {
                    read(",");
                    c = factory.fullTextSearch(
                            getOnlySelectorName(), name,
                            parseStaticOperand());
                }
            }
        } else if ("ISSAMENODE".equalsIgnoreCase(functionName)) {
            String name = readName();
            if (readIf(",")) {
                c = factory.sameNode(name, readAbsolutePath());
            } else {
                c = factory.sameNode(getOnlySelectorName(), name);
            }
        } else if ("ISCHILDNODE".equalsIgnoreCase(functionName)) {
            String name = readName();
            if (readIf(",")) {
                c = factory.childNode(name, readAbsolutePath());
            } else {
                c = factory.childNode(getOnlySelectorName(), name);
            }
        } else if ("ISDESCENDANTNODE".equalsIgnoreCase(functionName)) {
            String name = readName();
            if (readIf(",")) {
                c = factory.descendantNode(name, readAbsolutePath());
            } else {
                c = factory.descendantNode(getOnlySelectorName(), name);
            }
        } else if ("SIMILAR".equalsIgnoreCase(functionName)) {
            if (readIf(".") || readIf("*")) {
                read(",");
                c = factory.similar(
                        getOnlySelectorName(), null, parseStaticOperand());
            } else {
                String name = readName();
                if (readIf(".")) {
                    if (readIf("*")) {
                        read(",");
                        c = factory.fullTextSearch(
                                name, null, parseStaticOperand());
                    } else {
                        String selector = name;
                        name = readName();
                        read(",");
                        c = factory.fullTextSearch(
                                selector, name, parseStaticOperand());
                    }
                } else {
                    read(",");
                    c = factory.fullTextSearch(
                            getOnlySelectorName(), name,
                            parseStaticOperand());
                }
            }
        } else if ("NATIVE".equalsIgnoreCase(functionName)) {
            LOG.warn("Native queries are deprecated. Query:{}", statement);
            String selectorName;
            if (currentTokenType == IDENTIFIER) {
                selectorName = readName();
                read(",");
            } else {
                selectorName = getOnlySelectorName();
            }
            String language = readString().getValue(Type.STRING);
            read(",");
            c = factory.nativeFunction(selectorName, language, parseStaticOperand());
        } else if ("SPELLCHECK".equalsIgnoreCase(functionName)) {
            String selectorName;
            if (currentTokenType == IDENTIFIER) {
                selectorName = readName();
                read(",");
            } else {
                selectorName = getOnlySelectorName();
            }
            c = factory.spellcheck(selectorName, parseStaticOperand());            
        } else if ("SUGGEST".equalsIgnoreCase(functionName)) {
            String selectorName;
            if (currentTokenType == IDENTIFIER) {
                selectorName = readName();
                read(",");
            } else {
                selectorName = getOnlySelectorName();
            }
            c = factory.suggest(selectorName, parseStaticOperand());
        } else {
            return null;
        }
        read(")");
        return c;
    }