Package org.apache.drill.common.expression

Examples of org.apache.drill.common.expression.ErrorCollector

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    return ret.e;
  }

  private ValueVector evalExprWithInterpreter(String expression, RecordBatch batch, Drillbit bit) throws Exception {
    LogicalExpression expr = parseExpr(expression);
    ErrorCollector error = new ErrorCollectorImpl();
    LogicalExpression materializedExpr = ExpressionTreeMaterializer.materialize(expr, batch, error, bit.getContext().getFunctionImplementationRegistry());
    if (error.getErrorCount() != 0) {
      logger.error("Failure while materializing expression [{}].  Errors: {}", expression, error);
      assertEquals(0, error.getErrorCount());
    }

    final MaterializedField outputField = MaterializedField.create("outCol", materializedExpr.getMajorType());

    ValueVector vector = TypeHelper.getNewVector(outputField, bit.getContext().getAllocator());
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        batch.getValueVectorId(SchemaPath.getSimplePath("test1"));
        result = new TypedFieldId(Types.required(MinorType.BIGINT), -5);
      }
    };

    ErrorCollector ec = new ErrorCollectorImpl();


    LogicalExpression elseExpression = new IfExpression.Builder().setElse(new ValueExpressions.LongExpression(1L, ExpressionPosition.UNKNOWN))
        .setIfCondition(new IfExpression.IfCondition(new ValueExpressions.BooleanExpression("true", ExpressionPosition.UNKNOWN),
            new FieldReference("test1", ExpressionPosition.UNKNOWN)))
        .build();

    LogicalExpression expr = new IfExpression.Builder()
        .setIfCondition(new IfExpression.IfCondition(new FieldReference("test", ExpressionPosition.UNKNOWN), new ValueExpressions.LongExpression(2L, ExpressionPosition.UNKNOWN)))
        .setElse(elseExpression).build();

    LogicalExpression newExpr = ExpressionTreeMaterializer.materialize(expr, batch, ec, registry);
    assertTrue(newExpr instanceof IfExpression);
    IfExpression newIfExpr = (IfExpression) newExpr;
    //assertEquals(1, newIfExpr.conditions.size());
    IfExpression.IfCondition ifCondition = newIfExpr.ifCondition;
    assertTrue(newIfExpr.elseExpression instanceof IfExpression);
    //assertEquals(1, newIfExpr.conditions.size());
    //ifCondition = newIfExpr.conditions.get(0);
    assertEquals(bigIntType, ifCondition.expression.getMajorType());
    assertEquals(true, ((ValueExpressions.BooleanExpression) ((IfExpression)(newIfExpr.elseExpression)).ifCondition.condition).value);
    if (ec.hasErrors()) {
      System.out.println(ec.toErrorString());
    }
    assertFalse(ec.hasErrors());
  }
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    assertFalse(ec.hasErrors());
  }

  @Test
  public void testMaterializingLateboundTreeValidated(final @Injectable RecordBatch batch) throws SchemaChangeException {
    ErrorCollector ec = new ErrorCollector() {
      int errorCount = 0;

      @Override
      public void addGeneralError(ExpressionPosition expr, String s) {
        errorCount++;
      }

      @Override
      public void addUnexpectedArgumentType(ExpressionPosition expr, String name, MajorType actual,
          MajorType[] expected, int argumentIndex) {
        errorCount++;
      }

      @Override
      public void addUnexpectedArgumentCount(ExpressionPosition expr, int actual, Range<Integer> expected) {
        errorCount++;
      }

      @Override
      public void addUnexpectedArgumentCount(ExpressionPosition expr, int actual, int expected) {
        errorCount++;
      }

      @Override
      public void addNonNumericType(ExpressionPosition expr, MajorType actual) {
        errorCount++;
      }

      @Override
      public void addUnexpectedType(ExpressionPosition expr, int index, MajorType actual) {
        errorCount++;
      }

      @Override
      public void addExpectedConstantValue(ExpressionPosition expr, int actual, String s) {
        errorCount++;
      }

      @Override
      public boolean hasErrors() {
        return errorCount > 0;
      }

      @Override
      public String toErrorString() {
        return String.format("Found %s errors.", errorCount);
      }

      @Override
      public int getErrorCount() {
        return errorCount;
      }
    };

    new NonStrictExpectations() {
      {
        batch.getValueVectorId(new SchemaPath("test", ExpressionPosition.UNKNOWN));
        result = new TypedFieldId(Types.required(MinorType.BIGINT), -5);
      }
    };


    LogicalExpression functionCallExpr = new FunctionCall("testFunc",
      ImmutableList.of((LogicalExpression) new FieldReference("test", ExpressionPosition.UNKNOWN) ),
      ExpressionPosition.UNKNOWN);
    LogicalExpression newExpr = ExpressionTreeMaterializer.materialize(functionCallExpr, batch, ec, registry);
    assertTrue(newExpr instanceof TypedNullConstant);
    assertEquals(1, ec.getErrorCount());
    System.out.println(ec.toErrorString());
  }
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    return ret.e;
  }

  private String getExpressionCode(String expression, RecordBatch batch) throws Exception {
    LogicalExpression expr = parseExpr(expression);
    ErrorCollector error = new ErrorCollectorImpl();
    LogicalExpression materializedExpr = ExpressionTreeMaterializer.materialize(expr, batch, error, registry);
    if (error.getErrorCount() != 0) {
      logger.error("Failure while materializing expression [{}].  Errors: {}", expression, error);
      assertEquals(0, error.getErrorCount());
    }

    ClassGenerator<Projector> cg = CodeGenerator.get(Projector.TEMPLATE_DEFINITION, new FunctionImplementationRegistry(DrillConfig.create())).getRoot();
    cg.addExpr(new ValueVectorWriteExpression(new TypedFieldId(materializedExpr.getMajorType(), -1), materializedExpr));
    return cg.getCodeGenerator().generateAndGet();
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  }

  @Test
  public void testMaterializingConstantTree(@Injectable RecordBatch batch) throws SchemaChangeException {

    ErrorCollector ec = new ErrorCollectorImpl();
    LogicalExpression expr = ExpressionTreeMaterializer.materialize(new ValueExpressions.LongExpression(1L,
        ExpressionPosition.UNKNOWN), batch, ec, registry);
    assertTrue(expr instanceof ValueExpressions.LongExpression);
    assertEquals(1L, ValueExpressions.LongExpression.class.cast(expr).getLong());
    assertFalse(ec.hasErrors());
  }
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        batch.getValueVectorId(new SchemaPath("test", ExpressionPosition.UNKNOWN));
        result = new TypedFieldId(Types.required(MinorType.BIGINT), -5);
      }
    };

    ErrorCollector ec = new ErrorCollectorImpl();
    LogicalExpression expr = ExpressionTreeMaterializer.materialize(new FieldReference("test",
        ExpressionPosition.UNKNOWN), batch, ec, registry);
    assertEquals(bigIntType, expr.getMajorType());
    assertFalse(ec.hasErrors());
  }
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  }

  private JoinWorker generateNewWorker() throws ClassTransformationException, IOException, SchemaChangeException{

    final ClassGenerator<JoinWorker> cg = CodeGenerator.getRoot(JoinWorker.TEMPLATE_DEFINITION, context.getFunctionRegistry());
    final ErrorCollector collector = new ErrorCollectorImpl();

    // Generate members and initialization code
    /////////////////////////////////////////

    // declare and assign JoinStatus member
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    }

  }

  protected Filterer generateSV4Filterer() throws SchemaChangeException {
    final ErrorCollector collector = new ErrorCollectorImpl();
    final List<TransferPair> transfers = Lists.newArrayList();
    final ClassGenerator<Filterer> cg = CodeGenerator.getRoot(Filterer.TEMPLATE_DEFINITION4, context.getFunctionRegistry());

    final LogicalExpression expr = ExpressionTreeMaterializer.materialize(popConfig.getExpr(), incoming, collector, context.getFunctionRegistry());
    if(collector.hasErrors()){
      throw new SchemaChangeException(String.format("Failure while trying to materialize incoming schema.  Errors:\n %s.", collector.toErrorString()));
    }

    cg.addExpr(new ReturnValueExpression(expr));

//    for(VectorWrapper<?> i : incoming){
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    }

  }

  protected Filterer generateSV2Filterer() throws SchemaChangeException {
    final ErrorCollector collector = new ErrorCollectorImpl();
    final List<TransferPair> transfers = Lists.newArrayList();
    final ClassGenerator<Filterer> cg = CodeGenerator.getRoot(Filterer.TEMPLATE_DEFINITION2, context.getFunctionRegistry());

    final LogicalExpression expr = ExpressionTreeMaterializer.materialize(popConfig.getExpr(), incoming, collector, context.getFunctionRegistry());
    if(collector.hasErrors()){
      throw new SchemaChangeException(String.format("Failure while trying to materialize incoming schema.  Errors:\n %s.", collector.toErrorString()));
    }

    cg.addExpr(new ReturnValueExpression(expr));

    for(VectorWrapper<?> v : incoming){
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  @Override
  protected void setupNewSchema() throws SchemaChangeException{
    this.allocationVectors = Lists.newArrayList();
    container.clear();
    final List<NamedExpression> exprs = getExpressionList();
    final ErrorCollector collector = new ErrorCollectorImpl();
    final List<TransferPair> transfers = Lists.newArrayList();

    final ClassGenerator<Projector> cg = CodeGenerator.getRoot(Projector.TEMPLATE_DEFINITION, context.getFunctionRegistry());

    IntOpenHashSet transferFieldIds = new IntOpenHashSet();

    boolean isAnyWildcard = false;
  
    ClassifierResult result = new ClassifierResult(); 
    boolean classify = isClassificationNeeded(exprs);
   
    for(int i = 0; i < exprs.size(); i++){
      final NamedExpression namedExpression = exprs.get(i);
      result.clear();
     
      if (classify && namedExpression.getExpr() instanceof SchemaPath) {
        classifyExpr(namedExpression, incoming, result);
    
        if (result.isStar) {
          isAnyWildcard = true;
          Integer value = result.prefixMap.get(result.prefix);
          if (value != null && value.intValue() == 1) {
            int k = 0;
            for(VectorWrapper<?> wrapper : incoming) {
              ValueVector vvIn = wrapper.getValueVector();
              SchemaPath originalPath = vvIn.getField().getPath();
              if (k > result.outputNames.size()-1) {
                assert false;
              }
              String name = result.outputNames.get(k++);  // get the renamed column names
              if (name == EMPTY_STRING) continue;
              FieldReference ref = new FieldReference(name);
              TransferPair tp = wrapper.getValueVector().getTransferPair(ref);
              transfers.add(tp);
              container.add(tp.getTo());       
            }
          } else if (value != null && value.intValue() > 1) { // subsequent wildcards should do a copy of incoming valuevectors
            int k = 0;
            for(VectorWrapper<?> wrapper : incoming) {
              ValueVector vvIn = wrapper.getValueVector();
              SchemaPath originalPath = vvIn.getField().getPath();
              if (k > result.outputNames.size()-1) {
                assert false;
              }
              String name = result.outputNames.get(k++);  // get the renamed column names
              if (name == EMPTY_STRING) continue;

              final LogicalExpression expr = ExpressionTreeMaterializer.materialize(originalPath, incoming, collector, context.getFunctionRegistry() );
              if(collector.hasErrors()){
                throw new SchemaChangeException(String.format("Failure while trying to materialize incoming schema.  Errors:\n %s.", collector.toErrorString()));
              }             

              MaterializedField outputField = MaterializedField.create(name, expr.getMajorType());
              ValueVector vv = TypeHelper.getNewVector(outputField, oContext.getAllocator());
              allocationVectors.add(vv);
              TypedFieldId fid = container.add(vv);
              ValueVectorWriteExpression write = new ValueVectorWriteExpression(fid, expr, true);
              HoldingContainer hc = cg.addExpr(write);

              cg.getEvalBlock()._if(hc.getValue().eq(JExpr.lit(0)))._then()._return(JExpr.FALSE);
            }
          }
          continue;
        }
      }

      String outputName = getRef(namedExpression).getRootSegment().getPath();
      if (result != null && result.outputNames != null && result.outputNames.size() > 0) {
        for (int j = 0; j < result.outputNames.size(); j++) {
          if (!result.outputNames.get(j).equals(EMPTY_STRING)) {
            outputName = result.outputNames.get(j);
            break;
          }
        }
      }
     
      final LogicalExpression expr = ExpressionTreeMaterializer.materialize(namedExpression.getExpr(), incoming, collector, context.getFunctionRegistry(), true);
      final MaterializedField outputField = MaterializedField.create(outputName, expr.getMajorType());
      if(collector.hasErrors()){
        throw new SchemaChangeException(String.format("Failure while trying to materialize incoming schema.  Errors:\n %s.", collector.toErrorString()));
      }

      // add value vector to transfer if direct reference and this is allowed, otherwise, add to evaluation stack.
      if(expr instanceof ValueVectorReadExpression && incoming.getSchema().getSelectionVectorMode() == SelectionVectorMode.NONE
          && !((ValueVectorReadExpression) expr).hasReadPath()
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Related Classes of org.apache.drill.common.expression.ErrorCollector

  • org.apache.drill.exec.expr.ExpressionInterpreterTest
  • org.apache.drill.exec.expr.ExpressionTest
  • org.apache.drill.exec.physical.impl.aggregate.AggBatch
  • org.apache.drill.exec.physical.impl.aggregate.HashAggBatch
  • org.apache.drill.exec.physical.impl.aggregate.StreamingAggBatch
  • org.apache.drill.exec.physical.impl.common.ChainedHashTable
  • org.apache.drill.exec.physical.impl.filter.FilterRecordBatch
  • org.apache.drill.exec.physical.impl.flatten.FlattenRecordBatch
  • org.apache.drill.exec.physical.impl.join.MergeJoinBatch
  • org.apache.drill.exec.physical.impl.mergereceiver.MergingRecordBatch
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