mvt_agg_init_context()

void mvt_agg_init_context

(

mvt_agg_context *

ctx

)

Initialize aggregation context.

Definition at line 1233 of file mvt.c.

{
        VectorTile__Tile__Layer *layer;
 
        POSTGIS_DEBUG(2, "mvt_agg_init_context called");
 
        if (ctx->extent == 0)
                elog(ERROR, "mvt_agg_init_context: extent cannot be 0");
 
        ctx->tile = NULL;
        ctx->features_capacity = FEATURES_CAPACITY_INITIAL;
        ctx->keys_hash = NULL;
        ctx->string_values_hash = NULL;
        ctx->float_values_hash = NULL;
        ctx->double_values_hash = NULL;
        ctx->uint_values_hash = NULL;
        ctx->sint_values_hash = NULL;
        ctx->bool_values_hash = NULL;
        ctx->values_hash_i = 0;
        ctx->keys_hash_i = 0;
        ctx->id_index = UINT32_MAX;
        ctx->geom_index = UINT32_MAX;
 
        memset(&ctx->column_cache, 0, sizeof(ctx->column_cache));
 
        layer = palloc(sizeof(*layer));
        vector_tile__tile__layer__init(layer);
        layer->version = 2;
        layer->name = ctx->name;
        layer->has_extent = 1;
        layer->extent = ctx->extent;
        layer->features = palloc (ctx->features_capacity *
                sizeof(*layer->features));
 
        ctx->layer = layer;
}

References mvt_agg_context::bool_values_hash, mvt_agg_context::column_cache, mvt_agg_context::double_values_hash, mvt_agg_context::extent, mvt_agg_context::features_capacity, FEATURES_CAPACITY_INITIAL, mvt_agg_context::float_values_hash, mvt_agg_context::geom_index, mvt_agg_context::id_index, mvt_agg_context::keys_hash, mvt_agg_context::keys_hash_i, mvt_agg_context::layer, mvt_agg_context::name, mvt_agg_context::sint_values_hash, mvt_agg_context::string_values_hash, mvt_agg_context::tile, UINT32_MAX, mvt_agg_context::uint_values_hash, and mvt_agg_context::values_hash_i.

Referenced by pgis_asmvt_transfn().

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