yangxk1 commented on issue #756:
URL:
https://github.com/apache/incubator-graphar/issues/756#issuecomment-3298678162
Do you think io level is a proxy for io? That is, an interface similar to
the following is provided at io level:
```
interface FileReader{
Array<Row> readFile(URI fileUri,Fileters filters,Projections
projections,...);
}
class ParquetReaderProxy implements FileReader{
public Array<Row> readFile(URI fileUri,Fileters filters,Projections
projections,...) {
//use apache-parquet library to read file
}
}
```
and in higher levels, we provide access interface:
```
class PorpertyGroupReader{
FileReader fileReader;
Array<Row> readFromFile(int chunkIndex, PropertyGroup pg, URI baseUri){
//use baseUri to openFile
//use chunkIndex to pushDown
//use pg to decoding properties
return fileReader.readFile(...,...,...)
}
}
```
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