Package lupos.engine.operators.stream

Examples of lupos.engine.operators.stream.Stream

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    } else {
      for (final PatternMatcher zpm : this.patternMatchers) {
        zpm.replaceWith(PatternMatcher.createDebugInstance(zpm,
            debugstep));
      }
      final Stream new_stream = Stream.createDebugInstance(
          (Stream) this.rootNode, debugstep);
      this.rootNode.replaceWith(new_stream);
      this.rootNode = new_stream;
    }
  }
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      evaluator.compileQuery(query);
      evaluator.logicalOptimization();
      evaluator.physicalOptimization();
      if (evaluator.getRootNode() instanceof Stream) {
        final Stream stream = (Stream) evaluator.getRootNode();
        stream.addNotifyStreamResult(notifyStreamResult);
        return stream;
      } else {
        System.err.println("No stream query given!");
      }
    } catch (final Exception e) {
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    final String query =   "SELECT DISTINCT (avg(?o) as ?avg)\n"
                + "STREAM INTERMEDIATERESULT DURATION 1000\n" + "WHERE {\n"
                + "       WINDOW TYPE SLIDINGTRIPLES 1 {?s ?p ?o.} }";

    // now generate the query...
    final Stream stream = this.generateQuery(query, notifyStreamResult);
    if (stream != null) {
      // ... and process the stream query using a generated data stream
      this.generateStream(stream);
    }
  }
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Related Classes of lupos.engine.operators.stream.Stream

  • lupos.datastructures.items.TimestampedTriple
  • lupos.engine.evaluators.StreamQueryEvaluator
  • lupos.engine.operators.messages.ComputeIntermediateResultMessage
  • lupos.test.TestStream
  • java.util.Date
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