Java 使用sun codemodel创建抽象方法实现？

我正在尝试使用sun codemodel创建以下内容

JavaRDD<Activitydaily> activityBatchDailyRDDs = 
    activityBatchDailyFunction.cassandraTable("test", "tbl")
        .map(new Function<CassandraRow, Activitydaily>() {
            public Activitydaily call(CassandraRow v1) throws Exception {
                return new Activitydaily();
            }
         });

下面是我当前的输出

JavaRDD<Activitydaily> ActivitydailyRDD = 
    ActivitydailyFunction.cassandraTable("demo", "activitydaily")
        .map(new Function<CassandraRow, Activitydaily>());

JavaRDD activitydailryrdd=
ActivitydailyFunction.cassandraTable（“演示”、“activitydaily”）
.map（新函数（））；

这里真正的问题是：如何定义匿名内部类

要定义anonymouse内部类，只需在

Jcm

实例上使用

anonymousClass（）

方法：

JDefinedClass anonymousFunctionClass = cm.anonymousClass(function.narrow(cassandraRow, activityBatchDailyRealTimeBean));
JMethod callMethod = anonymousFunctionClass.method(JMod.PUBLIC, Activitydaily.class, "call");
callMethod._throws(Exception.class);
JVar v1Param = callMethod.param(CassandraRow.class, "v1");
callMethod.body()._return(JExpr._new(cm.ref(Activitydaily.class)));

然后在

JExpr.\u new（）

调用中使用它：

JClass cassandraConnector = cm.directClass("com.datastax.spark.connector.cql.CassandraConnector");

// Anonymous inner class declaration:
JDefinedClass anonymousFunctionClass = cm.anonymousClass(function.narrow(cassandraRow, activityBatchDailyRealTimeBean));
JMethod callMethod = anonymousFunctionClass.method(JMod.PUBLIC, Activitydaily.class, "call");
callMethod._throws(Exception.class);
JVar v1Param = callMethod.param(CassandraRow.class, "v1");
callMethod.body()._return(JExpr._new(cm.ref(Activitydaily.class)));

JExpression functionExpression = JExpr._new(anonymousFunctionClass);

JExpression javaRDDAssignmentExpression = JExpr
    .invoke(JExpr.ref(className + "Function"), "cassandraTable")
        .arg(schema).arg(table);
javaRDDAssignmentExpression = javaRDDAssignmentExpression.invoke("map")
    .arg(functionExpression);
executerBlock.decl(javaRDD.narrow(activityBatchDailyRealTimeBean),
        className + "RDD", javaRDDAssignmentExpression);

其结果如下所示：

activityBatchDailyFunction.cassandraTable("test", "tbl")
    .map(new Function<CassandraRow,Activity_daily>() {
        public Activity_daily call(CassandraRow v1) {
            return new Activity_daily();
        }
    }
);

activityBatchDailyFunction.cassandraTable（“测试”，“待测试”）
.map（新函数（）{
公共活动(每日电话)(卡桑德拉罗v1){
每天返回新活动（）；
}
}
);

Hmm，在哪一行？在回顾中，我注意到我没有用cm替换codeModel（来自您的示例），我已经更新了响应。

activityBatchDailyFunction.cassandraTable("test", "tbl")
    .map(new Function<CassandraRow,Activity_daily>() {
        public Activity_daily call(CassandraRow v1) {
            return new Activity_daily();
        }
    }
);