Can not be reset NULL in a column with gsSetRowFieldByXXX()

[knonomura]

When GSRow object is reused, it can not be reset NULL in a column with gsSetRowFieldByXXX().

This is a sample code.

#include "gridstore.h"
#include <stdio.h>

int sample1(const char *addr, const char *port, const char *clusterName, const char *user, const char *passwd) {
    GSResult ret = EXIT_FAILURE;
    GSGridStore *store;
    const GSPropertyEntry props[] = {
            { "notificationAddress", addr },
            { "notificationPort", port },
            { "clusterName", clusterName },
            { "user", user },
            { "password", passwd } };
    const size_t propCount = sizeof(props) / sizeof(*props);
    ret = gsGetGridStore(gsGetDefaultFactory(), props, propCount, &store);
    ret != GS_RESULT_OK ? printf("gsGetGridStore failed %d\n",ret) : 0;

    GSContainer *col;
    GSRow *colRow;
    GSBool bExists;
    GSColumnInfo colInfoList[3] = { {"long", GS_TYPE_LONG},
                                    {"float", GS_TYPE_FLOAT},
                                    {"byte", GS_TYPE_BYTE}};
    GSContainerInfo colInfo = {"col",
                                GS_CONTAINER_COLLECTION,
                                3,
                                colInfoList,
                                GS_TRUE,
                                GS_TRUE,
                                NULL, 0, NULL, NULL,0, NULL};
    ret = gsDropContainer(store, "col");
    ret != GS_RESULT_OK ? printf("gsDropContainer failed %d\n",ret) : 0;
    ret = gsPutContainerGeneral(store, "col", &colInfo, GS_FALSE, &col);
    ret != GS_RESULT_OK ? printf("gsPutContainerGeneral failed %d\n",ret) : 0;
    ret = gsSetAutoCommit(col, false);
    ret != GS_RESULT_OK ? printf("gsSetAutoCommit failed %d\n",ret) : 0;

    ret = gsCreateRowByContainer(col, &colRow);
    ret != GS_RESULT_OK ? printf("gsCreateRowByContainer failed %d\n",ret) : 0;

    ret = gsSetRowFieldByLong(colRow, 0, 111);
    ret != GS_RESULT_OK ? printf("gsSetRowFieldByLong failed %d\n",ret) : 0;
    ret = gsSetRowFieldByFloat(colRow, 1, 1.1);
    ret != GS_RESULT_OK ? printf("gsSetRowFieldByFloat failed %d\n",ret) : 0;
    ret = gsSetRowFieldNull(colRow, 2);// NULL
    ret != GS_RESULT_OK ? printf("gsSetRowFieldNull failed %d\n",ret) : 0;
    ret = gsPutRow(col, NULL, colRow, &bExists);
    ret != GS_RESULT_OK ? printf("gsPutRow failed %d\n",ret) : 0;
    ret = gsCommit(col);
    ret != GS_RESULT_OK ? printf("gsCommit failed %d\n",ret) : 0;

    ret = gsSetRowFieldByLong(colRow, 0, 222);
    ret != GS_RESULT_OK ? printf("gsSetRowFieldByLong failed %d\n",ret) : 0;
    ret = gsSetRowFieldNull(colRow, 1);// NULL
    ret != GS_RESULT_OK ? printf("gsSetRowFieldNull failed %d\n",ret) : 0;
    ret = gsSetRowFieldByByte(colRow, 2, 2);
    ret != GS_RESULT_OK ? printf("gsSetRowFieldByByte failed %d\n",ret) : 0;
    ret = gsPutRow(col, NULL, colRow, &bExists);
    ret != GS_RESULT_OK ? printf("gsPutRow failed %d\n",ret) : 0;
    ret = gsCommit(col);
    ret != GS_RESULT_OK ? printf("gsCommit failed %d\n",ret) : 0;

    int64_t l = 111;
    GSBool nullValue;
    void *key = &l;
    ret = gsGetRow(col, key, colRow, &bExists);
    ret != GS_RESULT_OK ? printf("gsGetRow failed %d\n",ret) : 0;
    ret = gsGetRowFieldNull(colRow, 1, &nullValue);
    ret != GS_RESULT_OK ? printf("gsGetRowFieldNull failed %d\n",ret) : 0;
    if (nullValue) {
        printf("rowKey = %d, field 1 is null [NG]\n", l);
    }
    ret = gsGetRowFieldNull(colRow, 2, &nullValue);
    ret != GS_RESULT_OK ? printf("gsGetRowFieldNull failed %d\n",ret) : 0;
    if (nullValue) {
        printf("rowKey = %d, field 2 is null [OK]\n", l);
    }
    l = 222;
    ret = gsGetRow(col, key, colRow, &bExists);
    ret != GS_RESULT_OK ? printf("gsGetRow failed %d\n",ret) : 0;
    ret = gsGetRowFieldNull(colRow, 1, &nullValue);
    ret != GS_RESULT_OK ? printf("gsGetRowFieldNull failed %d\n",ret) : 0;
    if (nullValue) {
        printf("rowKey = %d, field 1 is null [OK]\n", l);
    }
    ret = gsGetRowFieldNull(colRow, 2, &nullValue);
    ret != GS_RESULT_OK ? printf("gsGetRowFieldNull failed %d\n",ret) : 0;
    if (nullValue) {
        printf("rowKey = %d, field 2 is null [NG]\n", l);
    }

    gsCloseRow(&colRow);
    gsCloseContainer(&col, GS_FALSE);
    gsCloseGridStore(&store, GS_FALSE);
    return 0;
}

int main(int argc,char *argv[]){
    sample1(argv[1],argv[2],argv[3],argv[4],argv[5]);
    return 0;
}

Output is as follows.

rowKey = 111, field 2 is null [OK]
rowKey = 222, field 1 is null [OK]
rowKey = 222, field 2 is null [NG]

[knonomura]

Corrected output is as follows.

rowKey = 111, field 2 is null [OK]
rowKey = 222, field 1 is null [OK]