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[#7518] Add parser support for DB2 interval arithmetic

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This commit is contained in:
Lukas Eder 2018-09-26 12:23:32 +02:00
parent 403a7351d4
commit 274904dca2
2 changed files with 48 additions and 3 deletions
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14
jOOQ-manual/src/main/resources/org/jooq/web/grammar-3.12.txt
View File

@ -974,7 +974,19 @@ timeLiteral = 'TIME' stringLiteral
timestampLiteral = 'TIMESTAMP' stringLiteral
;
intervalLiteral = 'INTERVAL' stringLiteral
intervalLiteral =
'INTERVAL' stringLiteral
| field
(
( 'YEAR' | 'YEARS' )
| ( 'MONTH' | 'MONTHS' )
| ( 'DAY' | 'DAYS' )
| ( 'HOUR' | 'HOURS' )
| ( 'MINUTE' | 'MINUTES' )
| ( 'SECOND' | 'SECONDS' )
| ( 'MILLISECOND' | 'MILLISECONDS' )
| ( 'MICROSECOND' | 'MICROSECONDS' )
)
;
signedInteger = todo

37
jOOQ/src/main/java/org/jooq/impl/ParserImpl.java
View File

@ -4326,15 +4326,48 @@ final class ParserImpl implements Parser {
if (N.is(type) && r instanceof Field)
for (;;)
if (parseIf(ctx, '+'))
r = ((Field) r).add((Field) parseFactor(ctx, type));
r = parseSumRightOperand(ctx, type, r, true);
else if (parseIf(ctx, '-'))
r = ((Field) r).sub((Field) parseFactor(ctx, type));
r = parseSumRightOperand(ctx, type, r, false);
else
break;
return r;
}
private static final Field parseSumRightOperand(ParserContext ctx, Type type, FieldOrRow r, boolean add) {
Field f = (Field) parseFactor(ctx, type);
DatePart part;
if ((parseKeywordIf(ctx, "YEAR") || parseKeywordIf(ctx, "YEARS")) && ctx.requireProEdition())
part = DatePart.YEAR;
else if ((parseKeywordIf(ctx, "MONTH") || parseKeywordIf(ctx, "MONTHS")) && ctx.requireProEdition())
part = DatePart.MONTH;
else if ((parseKeywordIf(ctx, "DAY") || parseKeywordIf(ctx, "DAYS")) && ctx.requireProEdition())
part = DatePart.DAY;
else if ((parseKeywordIf(ctx, "HOUR") || parseKeywordIf(ctx, "HOURS")) && ctx.requireProEdition())
part = DatePart.HOUR;
else if ((parseKeywordIf(ctx, "MINUTE") || parseKeywordIf(ctx, "MINUTES")) && ctx.requireProEdition())
part = DatePart.MINUTE;
else if ((parseKeywordIf(ctx, "SECOND") || parseKeywordIf(ctx, "SECONDS")) && ctx.requireProEdition())
part = DatePart.SECOND;
else
part = null;
if (add)
return ((Field) r).add(f);
else
return ((Field) r).sub(f);
}
private static final FieldOrRow parseFactor(ParserContext ctx, Type type) {
FieldOrRow r = parseExp(ctx, type);