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[jOOQ/jOOQ#11009] Add support for the MySQL FIELD() function

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This commit is contained in:
Lukas Eder 2020-11-23 11:31:54 +01:00
parent 4b462d3a21
commit db45db76cd
4 changed files with 37 additions and 20 deletions
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20
jOOQ/src/main/java/org/jooq/impl/DSL.java
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@ -13490,6 +13490,26 @@ public class DSL {
// XXX Global Field and Function factory
// -------------------------------------------------------------------------
/**
* Get the MySQL <code>FIELD(expr, expr1, expr2, ...)</code> function.
*/
@NotNull
@Support
@SafeVarargs
public static <T> Field<Integer> field(Field<T> field, T... list) {
return field(field, Tools.fieldsArray(list, field.getDataType()));
}
/**
* Get the MySQL <code>FIELD(expr, expr1, expr2, ...)</code> function.
*/
@NotNull
@Support
@SafeVarargs
public static <T> Field<Integer> field(Field<T> field, Field<T>... list) {
return new FieldFunction<>(field, list);
}
/**
* Wrap a {@link SelectField} in a general-purpose {@link Field}
*/

1
jOOQ/src/main/java/org/jooq/impl/Names.java
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@ -114,6 +114,7 @@ final class Names {
static final Name N_EXP = unquotedName("exp");
static final Name N_EXTRACT = unquotedName("extract");
static final Name N_EXTRACT_DURATION = unquotedName("extract_duration");
static final Name N_FIELD = unquotedName("field");
static final Name N_FLASHBACK = unquotedName("flashback");
static final Name N_FLOOR = unquotedName("floor");
static final Name N_FUNCTION = unquotedName("function");

24
jOOQ/src/main/java/org/jooq/impl/ParserImpl.java
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@ -9347,31 +9347,15 @@ final class ParserImpl implements Parser {
return null;
}
private static final <T, Z> Field<?> parseFieldFieldIf(ParserContext ctx) {
private static final <T> Field<?> parseFieldFieldIf(ParserContext ctx) {
if (parseFunctionNameIf(ctx, "FIELD")) {
parse(ctx, '(');
List<Field<?>> args = new ArrayList<>();
args.add(parseField(ctx));
Field<?> f1 = parseField(ctx);
parse(ctx, ',');
int i = 1;
do {
args.add(parseField(ctx));
args.add(inline(i++));
}
while (parseIf(ctx, ','));
args.add(inline(0));
List<Field<?>> f2 = parseFields(ctx);
parse(ctx, ')');
return DSL.decode(
(Field<T>) args.get(0),
(Field<T>) args.get(1),
(Field<Z>) args.get(2),
args.subList(3, args.size()).toArray(EMPTY_FIELD)
);
return DSL.field((Field<T>) f1, (Field<T>[]) f2.toArray(EMPTY_FIELD));
}
return null;

12
jOOQ/src/main/java/org/jooq/impl/Tools.java
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@ -1968,6 +1968,18 @@ final class Tools {
return result;
}
@SuppressWarnings("unchecked")
static final <T> Field<T>[] fieldsArray(Object[] values, DataType<T> type) {
if (values == null)
return (Field<T>[]) EMPTY_FIELD;
Field<T>[] result = new Field[values.length];
for (int i = 0; i < result.length; i++)
result[i] = field(values[i], type);
return result;
}
static final Field<?>[] fieldsArray(Object[] values, DataType<?>[] types) {
if (values == null || types == null)
return EMPTY_FIELD;