Package org.eigenbase.rex

Examples of org.eigenbase.rex.RexBuilder

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        // check if its a convert_from or convert_to function
        if (functionName.equalsIgnoreCase("convert_from") || functionName.equalsIgnoreCase("convert_to")) {
          assert nArgs == 2 && function.getOperands().get(1) instanceof RexLiteral;
          String literal = ((NlsString) (((RexLiteral) function.getOperands().get(1)).getValue())).getValue();
          RexBuilder builder = new RexBuilder(factory);

          // construct the new function name based on the input argument
          String newFunctionName = functionName + literal;

          // Look up the new function name in the drill operator table
          List<SqlOperator> operatorList = table.getSqlOperator(newFunctionName);
          assert operatorList.size() > 0;
          SqlFunction newFunction = null;

          // Find the SqlFunction with the correct args
          for (SqlOperator op : operatorList) {
            if (op.getOperandTypeChecker().getOperandCountRange().isValidCount(nArgs - 1)) {
              newFunction = (SqlFunction) op;
              break;
            }
          }
          assert newFunction != null;

          // create the new expression to be used in the rewritten project
          newExpr = builder.makeCall(newFunction, function.getOperands().subList(0, 1));
          rewrite = true;
        }
      }
      exprList.add(newExpr);
    }
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        && extraFields.isEmpty()) {
      return this;
    }
    List<RexNode> exprList = new ArrayList<RexNode>();
    List<String> nameList = new ArrayList<String>();
    RexBuilder rexBuilder = getCluster().getRexBuilder();
    final List<RelDataTypeField> fields = getRowType().getFieldList();

    // Project the subset of fields.
    for (int i : BitSets.toIter(fieldsUsed)) {
      RelDataTypeField field = fields.get(i);
      exprList.add(rexBuilder.makeInputRef(this, i));
      nameList.add(field.getName());
    }

    // Project nulls for the extra fields. (Maybe a sub-class table has
    // extra fields, but we don't.)
    for (RelDataTypeField extraField : extraFields) {
      exprList.add(
          rexBuilder.ensureType(
              extraField.getType(),
              rexBuilder.constantNull(),
              true));
      nameList.add(extraField.getName());
    }

    return projectFactory.createProject(this, exprList, nameList);
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    return RelOptPredicateList.EMPTY;
  }

  /** Infers predicates for a {@link JoinRelBase}. */
  public RelOptPredicateList getPredicates(JoinRelBase join) {
    RexBuilder rB = join.getCluster().getRexBuilder();
    RelNode left = join.getInput(0);
    RelNode right = join.getInput(1);

    RelOptPredicateList leftInfo =
        RelMetadataQuery.getPulledUpPredicates(left);
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   * Infers predicates for a UnionRelBase.
   *
   * <p>The pulled up expression is a disjunction of its children's predicates.
   */
  public RelOptPredicateList getPredicates(UnionRelBase union) {
    RexBuilder rB = union.getCluster().getRexBuilder();
    List<RexNode> orList = Lists.newArrayList();
    for (RelNode input : union.getInputs()) {
      RelOptPredicateList info = RelMetadataQuery.getPulledUpPredicates(input);
      if (!info.pulledUpPredicates.isEmpty()) {
        orList.addAll(
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    if (preds.leftInferredPredicates.isEmpty()
        && preds.rightInferredPredicates.isEmpty()) {
      return;
    }

    RexBuilder rB = join.getCluster().getRexBuilder();
    RelNode lChild = join.getLeft();
    RelNode rChild = join.getRight();

    if (preds.leftInferredPredicates.size() > 0) {
      RelNode curr = lChild;
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    final JoinRelBase bottomJoin = call.rel(1);
    final RelNode relA = bottomJoin.getLeft();
    final RelNode relB = bottomJoin.getRight();
    final RelSubset relC = call.rel(2);
    final RelOptCluster cluster = topJoin.getCluster();
    final RexBuilder rexBuilder = cluster.getRexBuilder();

    if (relC.getConvention() != relA.getConvention()) {
      // relC could have any trait-set. But if we're matching say
      // EnumerableConvention, we're only interested in enumerable subsets.
      return;
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    OptiqCatalogReader catalogReader =
        new OptiqCatalogReader(prepareContext.getRootSchema(),
            prepareContext.config().caseSensitive(),
            prepareContext.getDefaultSchemaPath(),
            typeFactory);
    final RexBuilder rexBuilder = new RexBuilder(typeFactory);
    final RelOptPlanner planner =
        createPlanner(prepareContext,
            action.getConfig().getContext(),
            action.getConfig().getCostFactory());
    final RelOptQuery query = new RelOptQuery(planner);
    final RelOptCluster cluster =
        query.createCluster(rexBuilder.getTypeFactory(), rexBuilder);
    return action.apply(cluster, catalogReader,
        prepareContext.getRootSchema().plus(), statement);
  }
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      super(context, catalogReader, resultConvention);
      this.schema = schema;
      this.prefer = prefer;
      this.planner = planner;
      this.typeFactory = typeFactory;
      this.rexBuilder = new RexBuilder(typeFactory);
    }
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      }

      // Only process equivalences found in the join conditions. Processing
      // Equivalences from the left or right side infer predicates that are
      // already present in the Tree below the join.
      RexBuilder rexBuilder = joinRel.getCluster().getRexBuilder();
      List<RexNode> exprs =
          RelOptUtil.conjunctions(
              compose(rexBuilder, ImmutableList.of(joinRel.getCondition())));

      final EquivalenceFinder eF = new EquivalenceFinder();
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        "unknown expression type " + expression.getNodeType());
  }

  private List<RexNode> toRex(
      RelNode child, FunctionExpression expression) {
    RexBuilder rexBuilder = cluster.getRexBuilder();
    List<RexNode> list =
        Collections.singletonList(
            rexBuilder.makeRangeReference(child));
    OptiqPrepareImpl.ScalarTranslator translator =
        OptiqPrepareImpl.EmptyScalarTranslator
            .empty(rexBuilder)
            .bind(expression.parameterList, list);
    final List<RexNode> rexList = new ArrayList<RexNode>();
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Related Classes of org.eigenbase.rex.RexBuilder

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