[GitHub] storm pull request #1693: [STORM-1961] Stream api for storm core use cases

[HeartSaVioR <gi...@git.apache.org>]

Github user HeartSaVioR commented on a diff in the pull request:

    https://github.com/apache/storm/pull/1693#discussion_r95327355
  
    --- Diff: storm-core/src/jvm/org/apache/storm/streams/processors/ProcessorContext.java ---
    @@ -0,0 +1,59 @@
    +/**
    + * Licensed to the Apache Software Foundation (ASF) under one
    + * or more contributor license agreements.  See the NOTICE file
    + * distributed with this work for additional information
    + * regarding copyright ownership.  The ASF licenses this file
    + * to you under the Apache License, Version 2.0 (the
    + * "License"); you may not use this file except in compliance
    + * with the License.  You may obtain a copy of the License at
    + *
    + * http://www.apache.org/licenses/LICENSE-2.0
    + *
    + * Unless required by applicable law or agreed to in writing, software
    + * distributed under the License is distributed on an "AS IS" BASIS,
    + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    + * See the License for the specific language governing permissions and
    + * limitations under the License.
    + */
    +package org.apache.storm.streams.processors;
    +
    +import java.io.Serializable;
    +import java.util.Set;
    +
    +/**
    + * Context information passed to the {@link Processor}.
    + */
    +public interface ProcessorContext extends Serializable {
    +    /**
    +     * Forwards the input to all downstream processors.
    +     *
    +     * @param input the input
    +     * @param <T>   the type of the input
    +     */
    +    <T> void forward(T input);
    +
    +    /**
    +     * Forwards the input to downstream processors at specified stream.
    +     *
    +     * @param input  the input
    +     * @param stream the stream to forward
    +     * @param <T>    the type of the input
    +     */
    +    <T> void forward(T input, String stream);
    +
    +    /**
    +     * Returns if the processing is in a windowed context and should wait for
    +     * punctuation before emitting results.
    +     *
    +     * @return if this is a windowed context or not
    --- End diff --
    
    nit: if -> whether


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