Question

在Realm position中，我们可以知道哪个inserted/updated/removed列表已更改，且该元素是否从列表中获得dfSmall: ix,#CHROM,POS,sample,allele,pop,super_pop 0,1,1121557,rs112904239,HG00096,T,GBR,EUR 1,1,1213223,rs113095492,HG00096,T,GBR,EUR 2,1,1000894,rs114006445,HG00096,T,GBR,EUR (5000 rows) dfLarge: #CHROM POS ID REF ALT QUAL FILTER 1 14719 rs527865771 C A 100 PASS ... 1 14728 rs547701710 C A 100 PASS ... 1 1213223 rs113095492 A G 100 PASS ... ... (>1 million rows, >2000 columns) #for just these three rows, my output would the row where 1, 1213223 match: dfMerge: #CHROM POS ID REF ALT QUAL FILTER 1 1213223 rs113095492 A G 100 PASS？

Answer 1

我们可以知道哪个位置列表发生了变化

是

private RealmResults<Obj> results;

private OrderedRealmCollectionChangeListener<RealmResults<Obj>> changeListener = new OrderedRealmCollectionChangeListener<RealmResults<Obj>>() {
    @Override
    public void onChange(RealmResults<Obj> results, OrderedCollectionChangeSet changeSet) {
        String insertions = changeSet.getInsertions().length == 0 ? "" : "\n - Insertions: " + Arrays.toString(changeSet.getInsertions());
        String deletions = changeSet.getDeletions().length == 0 ? "" : "\n - Deletions: " + Arrays.toString(changeSet.getDeletions());
        String changes = changeSet.getChanges().length == 0 ? "" : "\n - Changes: " + Arrays.toString(changeSet.getChanges());
        showStatus("Obj was loaded, or written to. " + insertions + deletions + changes);
    }
};


public void ...() {
    results = realm.where(Obj.class)...findAllAsync();
    results.addChangeListener(changeListener);

在Realm`addchangelistener`中知道插入/更新/删除了哪个位置元素？

1 个答案: