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use crate::error::Result;
use std::collections::HashMap;
use super::super::Repetition;
use super::{
spec, FieldInfo, GroupConvertedType, GroupLogicalType, PhysicalType, PrimitiveConvertedType,
PrimitiveLogicalType,
};
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct PrimitiveType {
pub field_info: FieldInfo,
pub logical_type: Option<PrimitiveLogicalType>,
pub converted_type: Option<PrimitiveConvertedType>,
pub physical_type: PhysicalType,
}
impl PrimitiveType {
pub fn from_physical(name: String, physical_type: PhysicalType) -> Self {
let field_info = FieldInfo {
name,
repetition: Repetition::Optional,
id: None,
};
Self {
field_info,
converted_type: None,
logical_type: None,
physical_type,
}
}
}
#[derive(Clone, Debug, PartialEq)]
pub enum ParquetType {
PrimitiveType(PrimitiveType),
GroupType {
field_info: FieldInfo,
logical_type: Option<GroupLogicalType>,
converted_type: Option<GroupConvertedType>,
fields: Vec<ParquetType>,
},
}
impl ParquetType {
pub fn get_field_info(&self) -> &FieldInfo {
match self {
Self::PrimitiveType(primitive) => &primitive.field_info,
Self::GroupType { field_info, .. } => field_info,
}
}
pub fn name(&self) -> &str {
&self.get_field_info().name
}
pub fn check_contains(&self, sub_type: &ParquetType) -> bool {
let basic_match = self.get_field_info() == sub_type.get_field_info();
match (self, sub_type) {
(
Self::PrimitiveType(PrimitiveType { physical_type, .. }),
Self::PrimitiveType(PrimitiveType {
physical_type: other_physical_type,
..
}),
) => basic_match && physical_type == other_physical_type,
(
Self::GroupType { fields, .. },
Self::GroupType {
fields: other_fields,
..
},
) => {
let mut field_map = HashMap::new();
for field in fields {
field_map.insert(field.name(), field);
}
for field in other_fields {
if !field_map
.get(field.name())
.map(|tpe| tpe.check_contains(field))
.unwrap_or(false)
{
return false;
}
}
true
}
_ => false,
}
}
}
impl ParquetType {
pub(crate) fn new_root(name: String, fields: Vec<ParquetType>) -> Self {
let field_info = FieldInfo {
name,
repetition: Repetition::Optional,
id: None,
};
ParquetType::GroupType {
field_info,
fields,
logical_type: None,
converted_type: None,
}
}
pub fn from_converted(
name: String,
fields: Vec<ParquetType>,
repetition: Repetition,
converted_type: Option<GroupConvertedType>,
id: Option<i32>,
) -> Self {
let field_info = FieldInfo {
name,
repetition,
id,
};
ParquetType::GroupType {
field_info,
fields,
converted_type,
logical_type: None,
}
}
pub fn try_from_primitive(
name: String,
physical_type: PhysicalType,
repetition: Repetition,
converted_type: Option<PrimitiveConvertedType>,
logical_type: Option<PrimitiveLogicalType>,
id: Option<i32>,
) -> Result<Self> {
spec::check_converted_invariants(&physical_type, &converted_type)?;
spec::check_logical_invariants(&physical_type, &logical_type)?;
let field_info = FieldInfo {
name,
repetition,
id,
};
Ok(ParquetType::PrimitiveType(PrimitiveType {
field_info,
converted_type,
logical_type,
physical_type,
}))
}
pub fn from_physical(name: String, physical_type: PhysicalType) -> Self {
ParquetType::PrimitiveType(PrimitiveType::from_physical(name, physical_type))
}
pub fn from_group(
name: String,
repetition: Repetition,
converted_type: Option<GroupConvertedType>,
logical_type: Option<GroupLogicalType>,
fields: Vec<ParquetType>,
id: Option<i32>,
) -> Self {
let field_info = FieldInfo {
name,
repetition,
id,
};
ParquetType::GroupType {
field_info,
logical_type,
converted_type,
fields,
}
}
}