public Void visitCastExpression()

in logical/src/main/java/org/apache/drill/common/expression/ExpressionStringBuilder.java [263:323]

55 lines of code
32 McCabe index (conditional complexity)


  public Void visitCastExpression(CastExpression e, StringBuilder sb) throws RuntimeException {
    MajorType mt = e.getMajorType();

    sb.append("cast( (");
    e.getInput().accept(this, sb);
    sb.append(" ) as ");
    sb.append(mt.getMinorType().name());

    switch(mt.getMinorType()) {
    case FLOAT4:
    case FLOAT8:
    case BIT:
    case INT:
    case TINYINT:
    case SMALLINT:
    case BIGINT:
    case UINT1:
    case UINT2:
    case UINT4:
    case UINT8:
    case DATE:
    case TIMESTAMP:
    case TIMESTAMPTZ:
    case TIME:
    case INTERVAL:
    case INTERVALDAY:
    case INTERVALYEAR:
      // do nothing else.
      break;
    case VAR16CHAR:
    case VARBINARY:
    case VARCHAR:
    case FIXED16CHAR:
    case FIXEDBINARY:
    case FIXEDCHAR:

      // add size in parens
      sb.append("(");
      sb.append(mt.getPrecision());
      sb.append(")");
      break;
    case DECIMAL9:
    case DECIMAL18:
    case DECIMAL28DENSE:
    case DECIMAL28SPARSE:
    case DECIMAL38DENSE:
    case DECIMAL38SPARSE:
    case VARDECIMAL:
      // add scale and precision
      sb.append("(");
      sb.append(mt.getPrecision());
      sb.append(", ");
      sb.append(mt.getScale());
      sb.append(")");
      break;
    default:
      throw new UnsupportedOperationException(String.format("Unable to convert cast expression %s into string.", e));
    }
    sb.append(" )");
    return null;
  }