Row Grouping
The Grid can group rows with equivalent cell values under shared parent rows.
If you want to make a column available for grouping, enable enableRowGroup on its ColDef,
otherwise a grouping attempt on this column will result in a runtime exception.
enableRowGroup takes two arguments: true, and a converter Function<String, T> from the group key
to the column's Java type T. AG Grid sends group keys as strings, so the adapter uses this converter
to turn the key back into the column type when building the query (e.g. a String column uses s -> s,
a number column BigDecimal::new / Integer::valueOf, a date column LocalDate::parse).
var priceColumn = ColDef.builder(Entity_.price)
.enableRowGroup(true, BigDecimal::new)
.build();
Providing Child Counts
To enable child counts, you need to set getChildCount on query builder to true,
and also provide name of the field where child count will be returned (this is the same field you will use in getChildCount callback in client).
this.queryBuilder = QueryBuilder.builder(Entity.class, Entity_.id, entityManager)
.colDefs(
// colDefs
)
.getChildCount(true)
.getChildCountFieldName("childCount")
.build();