siamesedb 0.1.23

The simple local key-value store.
Documentation 
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use super::super::DbXxxBase;
use super::{FileDbMapDbBytes, FileDbMapDbInt, FileDbMapDbString, FileDbParams};
use std::collections::BTreeMap;
use std::io::Result;
use std::path::{Path, PathBuf};

pub(crate) mod dbxxx;
pub(crate) mod semtype;

mod piece;
mod tr;

mod idx;
mod key;
mod val;
mod vfile;

#[cfg(feature = "htx")]
mod htx;

#[cfg(feature = "node_cache")]
mod nc;

#[cfg(feature = "node_cache")]
mod offidx;

#[derive(Debug)]
pub struct FileDbInner {
    db_bytes_map: BTreeMap<String, FileDbMapDbBytes>,
    db_int_map: BTreeMap<String, FileDbMapDbInt>,
    db_string_map: BTreeMap<String, FileDbMapDbString>,
    //
    path: PathBuf,
}

impl FileDbInner {
    pub fn open<P: AsRef<Path>>(path: P) -> Result<FileDbInner> {
        let path = path.as_ref();
        if !path.is_dir() {
            std::fs::create_dir_all(path)?;
        }
        Ok(FileDbInner {
            db_bytes_map: BTreeMap::new(),
            db_int_map: BTreeMap::new(),
            db_string_map: BTreeMap::new(),
            path: path.to_path_buf(),
        })
    }
    #[inline]
    pub fn path(&self) -> &Path {
        self.path.as_path()
    }
    pub fn sync_all(&self) -> Result<()> {
        self.applay_all(|o| o.sync_all())
    }
    pub fn sync_data(&self) -> Result<()> {
        self.applay_all(|o| o.sync_data())
    }
    fn applay_all<F>(&self, func: F) -> Result<()>
    where
        F: Fn(&mut dyn DbXxxBase) -> Result<()>,
    {
        {
            let keys: Vec<_> = self.db_bytes_map.keys().cloned().collect();
            for a in keys {
                let mut b = self.db_map_bytes(&a).unwrap();
                func(&mut b)?;
            }
        }
        {
            let keys: Vec<_> = self.db_int_map.keys().cloned().collect();
            for a in keys {
                let mut b = self.db_map_int(&a).unwrap();
                func(&mut b)?;
            }
        }
        {
            let keys: Vec<_> = self.db_string_map.keys().cloned().collect();
            for a in keys {
                let mut b = self.db_map_string(&a).unwrap();
                func(&mut b)?;
            }
        }
        Ok(())
    }
}

impl FileDbInner {
    #[inline]
    pub fn db_map_bytes(&self, name: &str) -> Option<FileDbMapDbBytes> {
        self.db_bytes_map.get(name).cloned()
    }
    #[inline]
    pub fn db_map_int(&self, name: &str) -> Option<FileDbMapDbInt> {
        self.db_int_map.get(name).cloned()
    }
    #[inline]
    pub fn db_map_string(&self, name: &str) -> Option<FileDbMapDbString> {
        self.db_string_map.get(name).cloned()
    }
    #[inline]
    pub fn db_map_bytes_insert(
        &mut self,
        name: &str,
        child: FileDbMapDbBytes,
    ) -> Option<FileDbMapDbBytes> {
        self.db_bytes_map.insert(name.to_string(), child)
    }
    #[inline]
    pub fn db_map_dbint_insert(
        &mut self,
        name: &str,
        child: FileDbMapDbInt,
    ) -> Option<FileDbMapDbInt> {
        self.db_int_map.insert(name.to_string(), child)
    }
    #[inline]
    pub fn db_map_insert(
        &mut self,
        name: &str,
        child: FileDbMapDbString,
    ) -> Option<FileDbMapDbString> {
        self.db_string_map.insert(name.to_string(), child)
    }
}

impl FileDbInner {
    pub(super) fn create_db_map(&mut self, name: &str, params: FileDbParams) -> Result<()> {
        let child: FileDbMapDbString = FileDbMapDbString::open(self.path(), name, params)?;
        let _ = self.db_map_insert(name, child);
        Ok(())
    }
    pub(super) fn create_db_map_bytes(&mut self, name: &str, params: FileDbParams) -> Result<()> {
        let child: FileDbMapDbBytes = FileDbMapDbBytes::open(self.path(), name, params)?;
        let _ = self.db_map_bytes_insert(name, child);
        Ok(())
    }
    pub(super) fn create_db_map_dbint(&mut self, name: &str, params: FileDbParams) -> Result<()> {
        let child: FileDbMapDbInt = FileDbMapDbInt::open(self.path(), name, params)?;
        let _ = self.db_map_dbint_insert(name, child);
        Ok(())
    }
}