Examples of org.eigenbase.rex.RexBuilder.ensureType()

org.eigenbase.rex.RexBuilder.ensureType()
Ensures expression is interpreted as a specified type. The returned expression may be wrapped with a cast. @param type desired type @param node expression @param matchNullability whether to correct nullability of specifiedtype to match the expression; this usually should be true, except for explicit casts which can override default nullability @return a casted expression or the original expression


    // 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());
    }

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    // 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());
    }

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    // 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());
    }

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