Examples with DbSpecificFunction com.developmentontheedge.sql.model.DbSpecificFunction used on opensource projects

Example 1 with DbSpecificFunction

use of com.developmentontheedge.sql.model.DbSpecificFunction in project be5 by DevelopmentOnTheEdge.

the class GenericDbmsTransformer method expandDbFunction.

private void expandDbFunction(AstFunNode node, Dbms dbms) {
    SimpleNode replacement = ((DbSpecificFunction) node.getFunction()).getReplacement(node, dbms);
    expandDbArguments(replacement, dbms);
    node.replaceWith(replacement);
}

Example 2 with DbSpecificFunction

use of com.developmentontheedge.sql.model.DbSpecificFunction in project be5 by DevelopmentOnTheEdge.

the class GenericDbmsTransformer method transformFunction.

protected void transformFunction(AstFunNode node) {
    String name = node.getFunction().getName().toLowerCase();
    if (node.getFunction() instanceof DbSpecificFunction && !((DbSpecificFunction) node.getFunction()).isApplicable(getDbms()) && !node.withinDbmsTransform()) {
        throw new IllegalStateException("Function/operator '" + node.getFunction().getName() + "' is unsupported for " + getDbms());
    }
    if (DbSpecificFunction.needsTransformation(getDbms()).test(node.getFunction()))
        expandDbFunction(node, getDbms());
    if ("concat".equals(name) || ("||".equals(name) && node.jjtGetNumChildren() > 1))
        transformConcat(node);
    else if ("coalesce".equals(name))
        transformCoalesce(node);
    else if ("substr".equals(name))
        transformSubstr(node);
    else if ("length".equals(name))
        transformLength(node);
    else if ("chr".equals(name))
        transformChr(node);
    else if ("if".equals(name))
        transformIf(node);
    else if ("date_format".equals(name) || ("to_char".equals(name) && node.jjtGetNumChildren() == 2)) {
        SimpleNode child = node.child(1);
        if (child instanceof AstStringConstant) {
            String formatString = ((AstStringConstant) child).getValue();
            DateFormat df = DateFormat.byFormatString(formatString);
            if (df == null)
                throw new IllegalArgumentException("Unknown date format: " + formatString);
            transformDateFormat(node, df);
        } else
            throw new IllegalArgumentException("Date format is not a String");
    } else if ("to_char".equals(name) && node.jjtGetNumChildren() == 1 || "to_number".equals(name) || "to_key".equals(name))
        transformCastOracle(node);
    else if ("lpad".equals(name))
        transformLpad(node);
    else if ("trunc".equals(name))
        transformTrunc(node);
    else if ("now".equals(name))
        transformNow(node);
    else if ("to_date".equals(name))
        transformToDate(node);
    else if ("year".equals(name) || "month".equals(name) || "day".equals(name))
        transformYearMonthDay(node);
    else {
        DateFormat df = DateFormat.byFunction(name);
        if (df != null)
            transformDateFormat(node, df);
    }
    if ("date_trunc".equals(name)) {
        String datePart = ((AstStringConstant) node.child(0)).getValue();
        if (datePart.equalsIgnoreCase("'month'") || datePart.equalsIgnoreCase("'year'"))
            transformDateTrunc(node);
    }
    if ("instr".equals(name))
        transformInstr(node);
    if ("add_months".equals(name) || "add_days".equals(name) || "add_millis".equals(name))
        transformDateAdd(node);
    if ("last_day".equals(name))
        transformLastDay(node);
    if ("seconddiff".equals(name))
        transformDateTimeDiff(node, "SECOND");
    if ("minutediff".equals(name))
        transformDateTimeDiff(node, "MINUTE");
    if ("hourdiff".equals(name))
        transformDateTimeDiff(node, "HOUR");
    if ("daydiff".equals(name))
        transformDateTimeDiff(node, "DAY");
    if ("monthdiff".equals(name))
        transformDateTimeDiff(node, "MONTH");
    if ("yeardiff".equals(name))
        transformDateTimeDiff(node, "YEAR");
    if ("timestampdiff".equals(name)) {
        SimpleNode child = node.child(0);
        String datePart = child instanceof AstFieldReference ? ((AstIdentifierConstant) child.child(0)).getValue() : "";
        transformDateTimeDiff(node, datePart);
    }
    if ("mod".equals(name) || "%".equals(name))
        transformMod(node);
    if ("least".equals(name) || "greatest".equals(name))
        transformLeastGreatest(node);
    if ("&".equals(name))
        transformBitAnd(node);
    if ("|".equals(name))
        transformBitOr(node);
    if ("right".equals(name))
        transformRight(node);
    if ("left".equals(name))
        transformLeft(node);
    if ("decode".equals(name))
        transformDecode(node);
    if ("string_agg".equals(name))
        transformStringAgg(node);
    if ("regexp_like".equals(name) || "~".equals(name))
        transformRegexpLike(node);
    if ("translate".equals(name))
        transformTranslate(node);
    if ("levenshtein".equals(name))
        transformLevenshtein(node);
}