Package org.apache.hadoop.hive.ql.lib

Examples of org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.startWalking()

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  public PhysicalContext resolve(PhysicalContext pctx) throws SemanticException {
    Dispatcher disp = new MetadataOnlyTaskDispatcher(pctx);
    GraphWalker ogw = new DefaultGraphWalker(disp);
    ArrayList<Node> topNodes = new ArrayList<Node>();
    topNodes.addAll(pctx.rootTasks);
    ogw.startWalking(topNodes, null);
    return pctx;
  }

  /**
   * Iterate over all tasks one-to-one and convert them to metadata only
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          opRules, localMapJoinProcCtx);
      GraphWalker ogw = new DefaultGraphWalker(disp);
      // iterator the reducer operator tree
      ArrayList<Node> topNodes = new ArrayList<Node>();
      topNodes.addAll(childOps);
      ogw.startWalking(topNodes, null);
    }
  }

  private LocalMapJoinProcFactory() {
    // prevent instantiation
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    GraphWalker ogw = new DefaultGraphWalker(disp);

    // Create a list of topop nodes
    ArrayList<Node> topNodes = new ArrayList<Node>();
    topNodes.addAll(pctx.getTopOps().values());
    ogw.startWalking(topNodes, null);

    return pctx;
  }

  private NodeProcessor getSortedMergeBucketMapjoinProc(ParseContext pctx) {
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    // Create a list of topop nodes
    ArrayList<Node> topNodes = new ArrayList<Node>();
    topNodes.add(expr);
    HashMap<Node, Object> nodeOutputs = new HashMap<Node, Object>();
    ogw.startWalking(topNodes, nodeOutputs);
    exprNodeDesc desc = (exprNodeDesc)nodeOutputs.get(expr);
    if (desc == null) {
      throw new SemanticException(tcCtx.getError());
    }
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    List<Node> startNodes = new ArrayList<Node>();
    startNodes.add(pred);
   
    HashMap<Node, Object> outputMap = new HashMap<Node, Object>();
    egw.startWalking(startNodes, outputMap);
    hasNonPartCols = pprCtx.getHasNonPartCols();

    // Get the exprNodeDesc corresponding to the first start node;
    return (exprNodeDesc)outputMap.get(pred);
  }
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    GraphWalker ogw = new DefaultGraphWalker(disp);
   
    // Create a list of topop nodes
    ArrayList<Node> topNodes = new ArrayList<Node>();
    topNodes.addAll(pctx.getTopOps().values());
    ogw.startWalking(topNodes, null);
    pctx.setHasNonPartCols(opWalkerCtx.getHasNonPartCols());

    return pctx;
  }
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    GraphWalker ogw = new DefaultGraphWalker(disp);
   
    // Create a list of topop nodes
    ArrayList<Node> topNodes = new ArrayList<Node>();
    topNodes.addAll(pGraphContext.getTopOps().values());
    ogw.startWalking(topNodes, null);

    return pGraphContext;
  }

}
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    for (exprNodeDesc node : preds) {
      clonedPreds.add((exprNodeDesc) node.clone());
    }
    startNodes.addAll(clonedPreds);
   
    egw.startWalking(startNodes, null);
   
    // check the root expression for final candidates
    for (exprNodeDesc pred : clonedPreds) {
      extractFinalCandidates(pred, exprContext);
    }
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    GraphWalker ogw = new DefaultGraphWalker(disp);

    // Create a list of topop nodes
    ArrayList<Node> topNodes = new ArrayList<Node>();
    topNodes.addAll(pctx.getTopOps().values());
    ogw.startWalking(topNodes, null);
    pctx.setHasNonPartCols(opWalkerCtx.getHasNonPartCols());

    return pctx;
  }
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    List<Node> startNodes = new ArrayList<Node>();
    startNodes.add(expr);

    HashMap<Node, Object> outputMap = new HashMap<Node, Object>();
    egw.startWalking(startNodes, outputMap);
    return (Dependency)outputMap.get(expr);
  }
}
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