More docs, slight refactor
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@ -1,4 +1,4 @@
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//! Drivers
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//! Database Drivers
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//!
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//! Drivers represent a connection to a specific type of database engine
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use crate::split_map_join;
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@ -66,11 +66,12 @@ pub trait DatabaseDriver: fmt::Debug {
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// If the identifier is actually a comma-separated list,
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// recurse to quote each identifier in the list
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if identifier.contains(",") {
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let quoted = split_map_join(identifier, ",", |part| self.quote_identifier(part.trim()));
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// This was the only way I could figure to get
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// around mutable string reference scope hell
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identifier.replace_range(.., "ed);
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identifier.replace_range(
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..,
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&split_map_join(identifier, ",", |part| self.quote_identifier(part.trim())),
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);
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}
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let (open_char, close_char) = self._quotes();
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@ -1,5 +1,9 @@
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//! Database Driver for MSSQL
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//!
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//! Contains database-specific query data
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use super::*;
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/// The struct implementing the `DatabaseDriver` trait
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#[derive(Debug)]
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pub struct MSSQL;
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@ -1,5 +1,9 @@
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//! Database Driver for MySQL
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//!
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//! Contains database-specific query data
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use super::*;
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/// The struct implementing the `DatabaseDriver` trait
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#[derive(Debug)]
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pub struct MySQL;
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@ -1,5 +1,9 @@
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//! Database Driver for Postgres
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//!
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//! Contains database-specific query data
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use super::*;
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/// The struct implementing the `DatabaseDriver` trait
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#[derive(Debug)]
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pub struct Postgres;
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@ -1,5 +1,9 @@
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//! Database Driver for SQLite
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//!
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//! Contains database-specific query data
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use super::*;
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/// The struct implementing the `DatabaseDriver` trait
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#[derive(Debug)]
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pub struct SQLite;
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10
src/lib.rs
10
src/lib.rs
@ -7,6 +7,16 @@ pub mod drivers;
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pub mod query_builder;
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pub mod types;
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/// Split a string, apply a closure to each substring,
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/// then join the string back together
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///
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/// For example:
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/// ```
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/// use stringqb::split_map_join;
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///
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/// let result = split_map_join("a\n,b, c\t,d", ",", |s| s.trim().to_string());
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/// assert_eq!("a,b,c,d", result);
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/// ```
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pub fn split_map_join<'a>(
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string: &'a str,
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split_join_by: &str,
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@ -1,4 +1,4 @@
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//! QueryBuilder
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//! Query Builder
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//!
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//! The QueryBuilder creates sql queries from chained methods
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use std::any::Any;
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@ -26,11 +26,17 @@ pub enum LikeWildcard {
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/// The type of SQL join
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#[derive(Debug)]
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pub enum JoinType {
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/// An `INNER` join
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Inner,
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/// An `OUTER` join
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Outer,
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/// A `LEFT` join
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Left,
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/// A `RIGHT` join
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Right,
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/// A `LEFT OUTER` join
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LeftOuter,
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/// A `RIGHT OUTER` join
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RightOuter,
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}
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@ -141,6 +147,17 @@ impl QueryState {
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self
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}
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pub fn append_query_map(
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&mut self,
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clause_type: QueryClauseType,
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conj: &str,
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s: &str,
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) -> &mut Self {
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self.query_map.push(QueryClause::new(clause_type, conj, s));
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self
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}
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pub fn set_from_string(&mut self, s: &str) -> &mut Self {
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self.from_string = s.to_owned();
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@ -353,11 +370,8 @@ impl QueryBuilder {
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let conjunction = "\n".to_string() + join_type + "JOIN ";
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self.state.query_map.push(QueryClause::new(
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QueryClauseType::Join,
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&conjunction,
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&condition,
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));
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self.state
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.append_query_map(QueryClauseType::Join, &conjunction, &condition);
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self
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}
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@ -426,14 +440,10 @@ impl QueryBuilder {
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pub fn group_start(&mut self) -> &mut Self {
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if self.state.query_map.len() == 0 {
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self.state
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.query_map
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.push(QueryClause::new(QueryClauseType::GroupStart, " ", "("));
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.append_query_map(QueryClauseType::GroupStart, " ", "(");
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} else {
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self.state.query_map.push(QueryClause::new(
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QueryClauseType::GroupStart,
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" WHERE ",
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"(",
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));
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self.state
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.append_query_map(QueryClauseType::GroupStart, " WHERE ", "(");
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}
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self
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@ -442,15 +452,11 @@ impl QueryBuilder {
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/// Start a logical grouping, prefixed with `not`
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pub fn not_group_start(&mut self) -> &mut Self {
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if self.state.query_map.len() == 0 {
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self.state.query_map.push(QueryClause::new(
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QueryClauseType::GroupStart,
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" WHERE ",
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"(",
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));
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self.state
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.append_query_map(QueryClauseType::GroupStart, " WHERE NOT ", "(");
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} else {
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self.state
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.query_map
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.push(QueryClause::new(QueryClauseType::GroupStart, " AND ", "("));
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.append_query_map(QueryClauseType::GroupStart, " AND NOT ", "(");
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}
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self
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@ -459,19 +465,15 @@ impl QueryBuilder {
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/// Start a logical grouping, prefixed with `or`
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pub fn or_group_start(&mut self) -> &mut Self {
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self.state
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.query_map
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.push(QueryClause::new(QueryClauseType::GroupStart, "", " OR ("));
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.append_query_map(QueryClauseType::GroupStart, "", " OR (");
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self
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}
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/// Start a logical grouping, prefixed with `or not`
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pub fn or_not_group_start(&mut self) -> &mut Self {
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self.state.query_map.push(QueryClause::new(
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QueryClauseType::GroupStart,
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"",
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" OR NOT (",
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));
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self.state
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.append_query_map(QueryClauseType::GroupStart, "", " OR NOT (");
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self
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}
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@ -479,8 +481,7 @@ impl QueryBuilder {
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/// End the current logical grouping
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pub fn group_end(&mut self) -> &mut Self {
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self.state
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.query_map
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.push(QueryClause::new(QueryClauseType::GroupEnd, "", ")"));
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.append_query_map(QueryClauseType::GroupEnd, "", ")");
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self
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}
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