lcb-views-beer-sample

beer-sample.c

#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include <libcouchbase/couchbase.h>
#include <libcouchbase/views.h>

#define CONNSTR "couchbase://localhost:12000/beer-sample"

static void rowCallback(lcb_t instance, int cbtype, const lcb_RESPVIEWQUERY *resp) {
    if (! (resp->rflags & LCB_RESP_F_FINAL)) {
        printf("Got key: %.*s\n", (int)resp->nkey, resp->key);
        if (resp->docresp && resp->docresp->rc == LCB_SUCCESS) {
            // Handle the actual document response
            printf("Got document contents: %.*s\n",
                (int)resp->docresp->nvalue, resp->docresp->value);
        }

    } else {
        printf("Got metadata: %.*s\n", (int)resp->nvalue, resp->value);
    }
}

int main(int argc, char **argv)
{
    struct lcb_create_st crst = {
            .version = 3,
            .v.v3.connstr = CONNSTR
    };

    lcb_t instance;
    lcb_create(&instance, &crst);
    lcb_connect(instance);
    lcb_wait(instance);
    assert(lcb_get_bootstrap_status(instance) == LCB_SUCCESS);

    // Initialize the queries:
    lcb_CMDVIEWQUERY cmd = { 0 };
    lcb_view_query_initcmd(&cmd, "beer", "brewery_beers", "limit=10", rowCallback);

    // Enabling this flag gives us 'include docs' functionality:
    cmd.cmdflags |= LCB_CMDVIEWQUERY_F_INCLUDE_DOCS;

    lcb_error_t rc = lcb_view_query(instance, NULL, &cmd);
    assert(rc == LCB_SUCCESS);
    lcb_wait(instance);
    lcb_destroy(instance);
    return 0;
}