Question

我有以下.avdl文件，我正在尝试编译：

@namespace("com.test.foo.bar")
protocol PairStore {

    /* This is already defined in another namespace - "com.test.foo.nan" */
    record Pair {
        string item1;
        string item2;
    }

    record Registration {
        Pair inputPair;
        Pair outputPair;
        string indexURI;
    }
}

所以问题是当我在Pair中创建com.test.foo.nan和PairStore时，如何引用Registration中定义的com.test.foo.bar？< / p>

Answer 1

在深入了解Avro文档后，我终于找到了一个包含解决方案的示例。具体而言，this example。

@namespace("com.test.foo")
protocol PairStore {

    /** Still need to define this record, but define it in the existing namespace. */
    @namespace("com.test.bar")
    record Pair {
        string item1;
        string item2;
    }

    record Registration {
        /** And this is how you refer to that record. */
        com.test.bar.Pair inputPair;
        com.test.bar.Pair outputPair;
        string indexURI;
    }
}

Answer 2

您应该能够从另一个avdl文件中导入记录，如下所示：

@namespace("com.test.foo")
    protocol PairStore {

    /** No need to define the record again, 
        just import the file that has Pair defined*/
    import idl "bar.avdl";

    record Registration {
        /** And this is how you refer to that record. */
        com.test.bar.Pair inputPair;
        com.test.bar.Pair outputPair;
        string indexURI;
    }
}

如何包含已在另一个.avdl文件中定义的记录？

2 个答案: