谓词过滤器rxjava2-如何传递动态过滤器参数
我已经用rxjava2构建了一些基本的过滤器,它可以正常工作。我想知道如何将值/参数传递给过滤器谓词过滤器rxjava2-如何传递动态过滤器参数,java,reactive-programming,rx-java2,Java,Reactive Programming,Rx Java2,我已经用rxjava2构建了一些基本的过滤器,它可以正常工作。我想知道如何将值/参数传递给过滤器(返回td.getTypeId()==**;)。如果有人对如何使用rxjava2/filter构建(半)动态查询(对象==)有想法/线索/示例,我们将不胜感激 Predicate<TradeDetailed> testfilter; Flowable<List<TradeDetailed>> td = tr.getTradesDetailedFlowable();
(返回td.getTypeId()==**;)
。如果有人对如何使用rxjava2/filter构建(半)动态查询(对象==
)有想法/线索/示例,我们将不胜感激
Predicate<TradeDetailed> testfilter;
Flowable<List<TradeDetailed>> td = tr.getTradesDetailedFlowable();
testfilter = new Predicate<TradeDetailed>() {
@Override
public boolean test(@NonNull TradeDetailed td) throws Exception {
return td.getTypeId() == 0;
}
};
Disposable d = td
.flatMapIterable(e -> e)
.filter(e-> testfilter.test(e))
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(t -> {
System.out.println("filtered "+t.getReference()));
},
err -> {
System.out.println("error");
}
);
谓词testfilter;
可流动的td=tr.getTradesDetailedFlowable();
testfilter=新谓词(){
@凌驾
公共布尔测试(@NonNull tradededetailed td)引发异常{
返回td.getTypeId()==0;
}
};
一次性d=td
.flatMapIterable(e->e)
.filter(e->testfilter.test(e))
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.订阅(t->{
System.out.println(“过滤的”+t.getReference());
},
呃->{
System.out.println(“错误”);
}
);
您可以为谓词创建一个单独的类
:
class YourPredicate implements Predicate<TradeDetailed>(){
private final int compareAgainst;
public YourPredicate(int compareAgainst){
this.compareAgainst = compareAgainst;
}
@Override
public boolean test(@NonNull TradeDetailed td) throws Exception {
return td.getTypeId() == compareAgainst;
}
}
类YourPredicate实现谓词(){
私人最终国际比较;
公共谓词(int compareAinst){
this.compareAgainst=compareAgainst;
}
@凌驾
公共布尔测试(@NonNull tradededetailed td)引发异常{
返回td.getTypeId()==compareAginst;
}
}