java 如何在java中设置google protobuf重复字段
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时间：2020-11-02 19:37:52 来源:igfitidea点击:
How to set google protobuf repeated field in java
提问by Angel
Here is my definition
这是我的定义
message point{
optional float x = 1;
optional float y = 2;
}
message test{
repeated field point = 1;
}
In my example.javafile I am trying to create a builder as follows:
在我的example.java文件中，我试图创建一个构建器，如下所示：
for(i = 0; i < somearr.size(); i++)
{
// I get x and y values from traversing the array
float x = getX;
float y = getY;
// now I want to set the repeated field point
}
How do I set the repeated field points?
如何设置重复场点？
回答by engineerC
Very similar to repeated PhoneNumberexample here.
非常类似于这里的repeated PhoneNumber示例。
Capitalizing those messages will help code readability.
将这些消息大写将有助于代码可读性。
message Point {
optional float x = 1;
optional float y = 2;
}
message Test {
repeated Point point = 1;
}
java:
爪哇：
Test.Builder b = Test.newBuilder();
for (i = 0; i < somearr.size(); i++) {
float x = getX; // somehow?
float y = getY; // ??
b.addPoint(Point.newBuilder().setX(x).setY(y).build());
}
Test mytest = b.build();
回答by Numuda
List<Point> points = ...;
Test.newBuilder().addAllPoint(points);
