Package org.apache.drill.exec.expr.CodeGenerator

Examples of org.apache.drill.exec.expr.CodeGenerator.HoldingContainer

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    //g.getBlock().directStatement(String.format("//---- start of eval portion of %s function. ----//", functionName));
   
    JBlock sub = new JBlock(true, true);
    JBlock topSub = sub;
    HoldingContainer out = null;
    MajorType returnValueType = returnValue.type;

    // add outside null handling if it is defined.
    if(nullHandling == NullHandling.NULL_IF_NULL){
      JExpression e = null;
      for(HoldingContainer v : inputVariables){
        if(v.isOptional()){
          if(e == null){
            e = v.getIsSet();
          }else{
            e = e.mul(v.getIsSet());
          }
        }
      }
     
      if(e != null){
        // if at least one expression must be checked, set up the conditional.
        returnValueType = returnValue.type.toBuilder().setMode(DataMode.OPTIONAL).build();
        out = g.declare(returnValueType);
        e = e.eq(JExpr.lit(0));
        JConditional jc = sub._if(e);
        jc._then().assign(out.getIsSet(), JExpr.lit(0));
        sub = jc._else();
      }
    }
   
    if(out == null) out = g.declare(returnValueType);
   
    // add the subblock after the out declaration.
    g.getEvalBlock().add(topSub);
   
   
    JVar internalOutput = sub.decl(JMod.FINAL, g.getHolderType(returnValueType), returnValue.name, JExpr._new(g.getHolderType(returnValueType)));
    addProtectedBlock(g, sub, body, inputVariables, workspaceJVars);
    if (sub != topSub) sub.assign(internalOutput.ref("isSet"),JExpr.lit(1));// Assign null if NULL_IF_NULL mode
    sub.assign(out.getHolder(), internalOutput);
    if (sub != topSub) sub.assign(internalOutput.ref("isSet"),JExpr.lit(1));// Assign null if NULL_IF_NULL mode
    return out;
  }
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  protected void addProtectedBlock(CodeGenerator<?> g, JBlock sub, String body, HoldingContainer[] inputVariables, JVar[] workspaceJVars){

    if(inputVariables != null){
      for(int i =0; i < inputVariables.length; i++){
        ValueReference parameter = parameters[i];
        HoldingContainer inputVariable = inputVariables[i];
        sub.decl(inputVariable.getHolder().type(), parameter.name, inputVariable.getHolder()); 
      }
    }

    JVar[] internalVars = new JVar[workspaceJVars.length];
    for(int i =0; i < workspaceJVars.length; i++){
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    @Override
    public HoldingContainer visitIfExpression(IfExpression ifExpr, CodeGenerator<?> generator) throws RuntimeException {
      JBlock local = generator.getEvalBlock();

      HoldingContainer output = generator.declare(ifExpr.getMajorType());

      JConditional jc = null;
      JBlock conditionalBlock = new JBlock(false, false);
      for (IfCondition c : ifExpr.conditions) {
        HoldingContainer HoldingContainer = c.condition.accept(this, generator);
        if (jc == null) {
          if (HoldingContainer.isOptional()) {
            jc = conditionalBlock._if(HoldingContainer.getIsSet().cand(HoldingContainer.getValue()));
          } else {
            jc = conditionalBlock._if(HoldingContainer.getValue());
          }
        } else {
          if (HoldingContainer.isOptional()) {
            jc = jc._else()._if(HoldingContainer.getIsSet().cand(HoldingContainer.getValue()));
          } else {
            jc = jc._else()._if(HoldingContainer.getValue());
          }
        }

        HoldingContainer thenExpr = c.expression.accept(this, generator);
        if (thenExpr.isOptional()) {
          JConditional newCond = jc._then()._if(thenExpr.getIsSet());
          JBlock b = newCond._then();
          b.assign(output.getValue(), thenExpr.getValue());
          b.assign(output.getIsSet(), thenExpr.getIsSet());
        } else {
          jc._then().assign(output.getValue(), thenExpr.getValue());
        }

      }

      HoldingContainer elseExpr = ifExpr.elseExpression.accept(this, generator);
      if (elseExpr.isOptional()) {
        JConditional newCond = jc._else()._if(elseExpr.getIsSet());
        JBlock b = newCond._then();
        b.assign(output.getValue(), elseExpr.getValue());
        b.assign(output.getIsSet(), elseExpr.getIsSet());
      } else {
        jc._else().assign(output.getValue(), elseExpr.getValue());

      }
      local.add(conditionalBlock);
      return output;
    }
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      throw new UnsupportedOperationException("All schema paths should have been replaced with ValueVectorExpressions.");
    }

    @Override
    public HoldingContainer visitLongConstant(LongExpression e, CodeGenerator<?> generator) throws RuntimeException {
      HoldingContainer out = generator.declare(e.getMajorType());
      generator.getEvalBlock().assign(out.getValue(), JExpr.lit(e.getLong()));
      return out;
    }
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      return out;
    }

    @Override
    public HoldingContainer visitDoubleConstant(DoubleExpression e, CodeGenerator<?> generator) throws RuntimeException {
      HoldingContainer out = generator.declare(e.getMajorType());
      generator.getEvalBlock().assign(out.getValue(), JExpr.lit(e.getDouble()));
      return out;
    }
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    }

    @Override
    public HoldingContainer visitBooleanConstant(BooleanExpression e, CodeGenerator<?> generator)
        throws RuntimeException {
      HoldingContainer out = generator.declare(e.getMajorType());
      generator.getEvalBlock().assign(out.getValue(), JExpr.lit(e.getBoolean() ? 1 : 0));
      return out;
    }
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    }

    private HoldingContainer visitValueVectorWriteExpression(ValueVectorWriteExpression e, CodeGenerator<?> generator) {

      LogicalExpression child = e.getChild();
      HoldingContainer inputContainer = child.accept(this, generator);
      JBlock block = generator.getEvalBlock();
      JExpression outIndex = generator.getMappingSet().getValueWriteIndex();
      JVar vv = generator.declareVectorValueSetupAndMember(generator.getMappingSet().getOutgoing(), e.getFieldId());
      String setMethod = e.isSafe() ? "setSafe" : "set";
     
      JInvocation setMeth;
      if (Types.usesHolderForGet(inputContainer.getMajorType())) {
        setMeth = vv.invoke("getMutator").invoke(setMethod).arg(outIndex).arg(inputContainer.getHolder());
      }else{
        setMeth = vv.invoke("getMutator").invoke(setMethod).arg(outIndex).arg(inputContainer.getValue());
      }
     
      if(e.isSafe()){
        HoldingContainer outputContainer = generator.declare(Types.REQUIRED_BIT);
        block.assign(outputContainer.getValue(), JExpr.lit(1));
        if(inputContainer.isOptional()){
//          block._if(vv.invoke("getMutator").invoke(setMethod).arg(outIndex).not())._then().assign(outputContainer.getValue(), JExpr.lit(0));
          JConditional jc = block._if(inputContainer.getIsSet().eq(JExpr.lit(0)).not());
          block = jc._then();
        }
        block._if(setMeth.not())._then().assign(outputContainer.getValue(), JExpr.lit(0));
        return outputContainer;
      }else{
        if (inputContainer.isOptional()) {
//          block.add(vv.invoke("getMutator").invoke(setMethod).arg(outIndex));
          JConditional jc = block._if(inputContainer.getIsSet().eq(JExpr.lit(0)).not());
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        getValueAccessor2 = ((JExpression) vv1.component(indexVariable.shrz(JExpr.lit(16)))).invoke("getAccessor");
        indexVariable = indexVariable.band(JExpr.lit((int) Character.MAX_VALUE));
      }

      // evaluation work.
      HoldingContainer out = generator.declare(e.getMajorType());

      if (out.isOptional()) {
        JBlock blk = generator.getEvalBlock();
        blk.assign(out.getIsSet(), getValueAccessor2.invoke("isSet").arg(indexVariable));
        JConditional jc = blk._if(out.getIsSet().eq(JExpr.lit(1)));
        if (Types.usesHolderForGet(e.getMajorType())) {
          jc._then().add(getValueAccessor.arg(indexVariable).arg(out.getHolder()));
        } else {
          jc._then().assign(out.getValue(), getValueAccessor.arg(indexVariable));
        }
      } else {
        if (Types.usesHolderForGet(e.getMajorType())) {
          generator.getEvalBlock().add(getValueAccessor.arg(indexVariable).arg(out.getHolder()));
        } else {
          generator.getEvalBlock().assign(out.getValue(), getValueAccessor.arg(indexVariable));
        }
      }
      return out;
    }
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    }

    private HoldingContainer visitReturnValueExpression(ReturnValueExpression e, CodeGenerator<?> generator) {
      LogicalExpression child = e.getChild();
      // Preconditions.checkArgument(child.getMajorType().equals(Types.REQUIRED_BOOLEAN));
      HoldingContainer hc = child.accept(this, generator);
      if(e.isReturnTrueOnOne()){
        generator.getEvalBlock()._return(hc.getValue().eq(JExpr.lit(1))); 
      }else{
        generator.getEvalBlock()._return(hc.getValue());
      }
     
      return null;
    }
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      JBlock setup = generator.getBlock(BlockType.SETUP);
      JType holderType = generator.getHolderType(majorType);
      JVar var = generator.declareClassField("string", holderType);
      JExpression stringLiteral = JExpr.lit(e.value);
      setup.assign(var, ((JClass)generator.getModel().ref(ValueHolderHelper.class)).staticInvoke("getVarCharHolder").arg(stringLiteral));
      return new HoldingContainer(majorType, var, null, null);
     
    }
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Related Classes of org.apache.drill.exec.expr.CodeGenerator.HoldingContainer

  • org.apache.drill.exec.expr.EvaluationVisitor$ConstantFilter
  • org.apache.drill.exec.expr.EvaluationVisitor$EvalVisitor
  • org.apache.drill.exec.expr.fn.DrillAggFuncHolder
  • org.apache.drill.exec.expr.fn.DrillFuncHolder
  • org.apache.drill.exec.expr.fn.DrillSimpleFuncHolder
  • org.apache.drill.exec.physical.impl.aggregate.AggBatch
  • org.apache.drill.exec.physical.impl.sort.SortBatch
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