geobuf_agg_finalfn()

uint8_t * geobuf_agg_finalfn

(

struct geobuf_agg_context *

ctx

)

Finalize aggregation.

Encode into Data message and return it packed as a bytea.

Definition at line 623 of file geobuf.c.

{
        size_t i, len;
        Data *data;
        Data__FeatureCollection *fc;
        uint8_t *buf;
 
        data = ctx->data;
        fc = data->feature_collection;
 
        /* check and set dimensions if not default */
        if (ctx->dimensions != 2) {
                data->has_dimensions = ctx->has_dimensions;
                data->dimensions = ctx->dimensions;
        }
 
        /* check and set precision if not default */
        if (ctx->e > MAX_PRECISION)
                ctx->e = MAX_PRECISION;
        ctx->precision = ceil(log(ctx->e) / log(10));
        if (ctx->precision != 6) {
                data->has_precision = 1;
                data->precision = ctx->precision;
        }
 
        for (i = 0; i < fc->n_features; i++)
                fc->features[i]->geometry = encode_geometry(ctx, ctx->lwgeoms[i]);
 
        len = data__get_packed_size(data);
        buf = palloc(sizeof(*buf) * (len + VARHDRSZ));
        data__pack(data, buf + VARHDRSZ);
 
        SET_VARSIZE(buf, VARHDRSZ + len);
 
        return buf;
}

References geobuf_agg_context::data, geobuf_agg_context::dimensions, geobuf_agg_context::e, encode_geometry(), geobuf_agg_context::has_dimensions, geobuf_agg_context::lwgeoms, MAX_PRECISION, and geobuf_agg_context::precision.

Referenced by pgis_asgeobuf_finalfn().

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