Java Code Examples for org.apache.spark.sql.types.UserDefinedType

The following examples show how to use org.apache.spark.sql.types.UserDefinedType. These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source Project: iceberg   Source File: SparkTypeVisitor.java    License: Apache License 2.0 5 votes vote down vote up
static <T> T visit(DataType type, SparkTypeVisitor<T> visitor) {
  if (type instanceof StructType) {
    StructField[] fields = ((StructType) type).fields();
    List<T> fieldResults = Lists.newArrayListWithExpectedSize(fields.length);

    for (StructField field : fields) {
      fieldResults.add(visitor.field(
          field,
          visit(field.dataType(), visitor)));
    }

    return visitor.struct((StructType) type, fieldResults);

  } else if (type instanceof MapType) {
    return visitor.map((MapType) type,
        visit(((MapType) type).keyType(), visitor),
        visit(((MapType) type).valueType(), visitor));

  } else if (type instanceof ArrayType) {
    return visitor.array(
        (ArrayType) type,
        visit(((ArrayType) type).elementType(), visitor));

  } else if (type instanceof UserDefinedType) {
    throw new UnsupportedOperationException(
        "User-defined types are not supported");

  } else {
    return visitor.atomic(type);
  }
}
 
Example 2
Source Project: iceberg   Source File: SparkTypeVisitor.java    License: Apache License 2.0 5 votes vote down vote up
static <T> T visit(DataType type, SparkTypeVisitor<T> visitor) {
  if (type instanceof StructType) {
    StructField[] fields = ((StructType) type).fields();
    List<T> fieldResults = Lists.newArrayListWithExpectedSize(fields.length);

    for (StructField field : fields) {
      fieldResults.add(visitor.field(
          field,
          visit(field.dataType(), visitor)));
    }

    return visitor.struct((StructType) type, fieldResults);

  } else if (type instanceof MapType) {
    return visitor.map((MapType) type,
        visit(((MapType) type).keyType(), visitor),
        visit(((MapType) type).valueType(), visitor));

  } else if (type instanceof ArrayType) {
    return visitor.array(
        (ArrayType) type,
        visit(((ArrayType) type).elementType(), visitor));

  } else if (type instanceof UserDefinedType){
    throw new UnsupportedOperationException(
        "User-defined types are not supported");

  } else {
    return visitor.atomic(type);
  }
}