Question

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();
            }
         });

以下是我的代码。但它是完整的。我不知道如何完成它。

JClass cassandraConnector = cm.directClass("com.datastax.spark.connector.cql.CassandraConnector");
JExpression functionExpression = JExpr._new(
    function.narrow(cassandraRow, activityBatchDailyRealTimeBean));

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);

以下是我目前的输出。

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

Answer 1

这里真正的问题是：如何定义匿名内部类。

要定义anonymouse内部类，只需使用//This will search for all div with Id starts with "Held" and it will loop through them $("div[id^='Held']").each(function(){ var divName = this.id; var uniqueId = divName.replace('Held', ''); if ( isItemExists(uniqueId, data.onHold, 'interactionId') ){ this.remove(); } }); // This function will find a value inside a function isItemExists(needle, haystack, elementKey){ return $.grep(haystack, function(item){ return item.elementKey== needle; }); };实例上的anonymousClass()方法：

Jcm

然后在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)));电话中使用它：

JExpr._new()

结果如下：

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);

使用sun-codemodel创建抽象方法实现？

1 个答案: