Examples of com.odiago.flumebase.exec.EventWrapper

com.odiago.flumebase.exec.EventWrapper
A wrapper interface around Events that offers access to individual fields. This wrapper manages the deserialization of the event through Avro, a parser, or other necessary means and delivers named, typed fields to its client. EventWrapper implementations should be as lazy as possible for efficiency. The EventWrapper should be considered a read-only view of the input data; if an output event from a given processing phase contains different data than its input, then the event should be copied; the data in the prior wrapper should not be modified.


    //LOG.debug("Delivering to " + mContextSourceName + ": Input event in rtsqlsink: "
    //    + new String(e.getBody()));
    try {
      e.set(FlowElement.STREAM_NAME_ATTR, mStreamSymbol.getName().getBytes());
      EventWrapper wrapper = new ParsingEventWrapper(mStreamSymbol.getEventParser(),
          mFieldNames);
      wrapper.reset(e);
      mWriteContext.emit(wrapper);
    } catch (InterruptedException ie) {
      // TODO(aaron): When Flume's api lets us throw InterruptedException, do so directly.
      throw new IOException(ie);
    }

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    symbols.addSymbol(new AssignedSymbol("x", Type.getPrimitive(Type.TypeName.INT), "x",
        IdentifierExpr.AccessType.FIELD));


    ArrayList<String> symbolNames = new ArrayList<String>();
    symbolNames.add("x");
    EventWrapper wrapper = new ParsingEventWrapper(new DelimitedEventParser(),
        symbolNames);
    wrapper.reset(new EventImpl("4".getBytes()));


    // This is expected to succeed.
    binExpr = new BinExpr(
        new IdentifierExpr("x"),
        BinOp.Times,

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        // Iterate over all the input events, and wrap them in
        // a parsing EventWrapper; advance these to the output.
        while (iter.hasNext()) {
          Event rawEvent = iter.next();
          rawEvent.set(STREAM_NAME_ATTR, mStreamSymbol.getName().getBytes());
          EventWrapper wrapper = new ParsingEventWrapper(mStreamSymbol.getEventParser(),
              mFieldNames);
          wrapper.reset(rawEvent);
          context.emit(wrapper);
        }
      } catch (IOException ioe) {
        LOG.error("IOException emitting event: " + ioe);
      } catch (InterruptedException ie) {

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Related Classes of com.odiago.flumebase.exec.EventWrapper

com.odiago.flumebase.exec.local.LocalInMemSourceElement$EventGenThread

com.odiago.flumebase.flume.RtsqlSink

com.odiago.flumebase.parser.TestIdentifierExpr

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