@Override protected QualifiedType<?> elementType(StatementContext ctx) { // if returnType is not supported by a collector factory, assume it to be a single-value return type. return returnType.mapType(type -> ctx.findElementTypeFor(type)) .orElse(returnType); } }
/** * Collect the results into a container of the given type. A collector * must be registered for the container type, which knows the element type * for the container. A mapper must be registered for the element type. * <p> * This method is equivalent to {@code ResultBearing.mapTo(elementType).collect(containerCollector)}. * </p> * * @param containerType the container type into which results will be collected * @return a container into which result rows have been collected */ @SuppressWarnings({ "unchecked", "rawtypes" }) default Object collectInto(Type containerType) { return scanResultSet((rs, ctx) -> { Collector collector = ctx.findCollectorFor(containerType) .orElseThrow(() -> new NoSuchCollectorException("No collector registered for container type " + containerType)); Type elementType = ctx.findElementTypeFor(containerType) .orElseThrow(() -> new ElementTypeNotFoundException("Unknown element type for container type " + containerType)); RowMapper<?> mapper = ctx.findMapperFor(elementType) .orElseThrow(() -> new NoSuchMapperException("No mapper registered for element type " + elementType)); return ResultIterable.of(rs, mapper, ctx).collect(collector); }); } }
/** * Collect the results into a container of the given type. A collector * must be registered for the container type, which knows the element type * for the container. A mapper must be registered for the element type. * <p> * This method is equivalent to {@code ResultBearing.mapTo(elementType).collect(containerCollector)}. * </p> * * @param containerType the container type into which results will be collected * @return a container into which result rows have been collected */ @SuppressWarnings("unchecked") default Object collectInto(Type containerType) { return mapResultSet((rs, ctx) -> { Collector collector = ctx.findCollectorFor(containerType) .orElseThrow(() -> new NoSuchCollectorException("No collector registered for container type " + containerType)); Type elementType = ctx.findElementTypeFor(containerType) .orElseThrow(() -> new ElementTypeNotFoundException("Unknown element type for container type " + containerType)); RowMapper<?> mapper = ctx.findRowMapperFor(elementType) .orElseThrow(() -> new UnsupportedOperationException("No mapper registered for element type " + elementType)); return ResultIterable.of(rs, mapper, ctx).collect(collector); }); } }