uqa-engine 0.2.3

Engine: schema-aware table store, catalog restore, transactions
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154

//
// Unified Query Algebra
//
// Copyright (c) 2023-2026 Cognica, Inc.
//

//! Durable row-trigger and rewrite-rule registries with PostgreSQL-compatible lifecycle.

use serde::{Deserialize, Serialize};
use std::collections::{BTreeMap, BTreeSet};

use uqa_sql::ast::{CreateRule, CreateTrigger, EventEnableMode};
use uqa_sql::SQLError;

pub(crate) use rule_binding::{
    bind_rule_action, bind_rule_expr_scoped, expand_rule_action_returning_stars,
    expand_rule_action_row_stars, first_rule_row_reference_in_expr,
    first_rule_row_reference_in_select, rule_action_has_set_operation,
    rule_condition_plan_references_whole_row, rule_condition_plan_row_columns,
    rule_expr_references_row, rule_expr_references_whole_row, rule_expr_row_columns,
    rule_statement_references_row, rule_statement_references_whole_row, rule_statement_row_columns,
};
pub(crate) use rule_condition_binding::RuleConditionBinding;
pub(crate) use rule_dependencies::{
    bind_stored_expression_routines, bind_stored_statement_routines,
    expression_references_routine_identity, rewrite_expression_routine_identity,
    rewrite_statement_routine_identity, statement_references_routine_identity,
};

const RULE_CATALOG_FORMAT_VERSION: u32 = 3;

#[derive(Debug, Clone, Default, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct RuleDependencies {
    #[serde(default, skip_serializing_if = "BTreeSet::is_empty")]
    pub(crate) relations: BTreeSet<crate::RelationIdentity>,
    #[serde(default, skip_serializing_if = "BTreeSet::is_empty")]
    pub(crate) columns: BTreeSet<RuleColumnDependency>,
    #[serde(default, skip_serializing_if = "BTreeSet::is_empty")]
    pub(crate) routines: BTreeSet<RuleRoutineDependency>,
}

#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize)]
pub(crate) struct RuleColumnDependency {
    pub(crate) relation: crate::RelationIdentity,
    pub(crate) column: String,
}

#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize)]
pub(crate) struct RuleRoutineDependency {
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub(crate) object_id: Option<[u8; 16]>,
    pub(crate) name: String,
    pub(crate) argument_types: Vec<String>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub(crate) struct StoredTrigger {
    pub(crate) definition: CreateTrigger,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub(crate) function_object_id: Option<[u8; 16]>,
    #[serde(default)]
    pub(crate) enabled: EventEnableMode,
    #[serde(default)]
    pub(crate) object_id: Option<[u8; 16]>,
    #[serde(default)]
    pub(crate) constraint_name: Option<String>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub(crate) struct StoredRule {
    pub(crate) definition: CreateRule,
    #[serde(default)]
    pub(crate) enabled: EventEnableMode,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub(crate) condition_plan: Option<uqa_planner::ExpressionPlan>,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub(crate) condition_binding: Option<RuleConditionBinding>,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub(crate) dependencies: Option<RuleDependencies>,
}

pub(crate) struct PreparedRuleColumnDrop {
    rules: BTreeMap<crate::RelationIdentity, BTreeMap<String, StoredRule>>,
    rebind: BTreeSet<(crate::RelationIdentity, String)>,
}

fn synchronize_rule_sql_text(definition: &mut CreateRule) -> Result<(), SQLError> {
    definition.condition_sql = definition
        .condition
        .as_ref()
        .map(uqa_sql::render::expression_sql)
        .transpose()?;
    definition.action_sql = definition
        .actions
        .iter()
        .map(uqa_sql::render::statement_sql)
        .collect::<Result<Vec<_>, _>>()?;
    Ok(())
}

impl StoredRule {
    pub(crate) fn bound_condition_plan(
        &self,
    ) -> Option<(&uqa_planner::ExpressionPlan, &RuleConditionBinding)> {
        self.condition_plan
            .as_ref()
            .zip(self.condition_binding.as_ref())
    }
}

#[derive(Default, Serialize, Deserialize)]
struct StoredTriggerCatalog {
    #[serde(default, skip_serializing_if = "Vec::is_empty")]
    triggers: Vec<StoredTrigger>,
}

#[derive(Default, Serialize, Deserialize)]
struct StoredRuleCatalog {
    #[serde(default)]
    format_version: u32,
    #[serde(default, skip_serializing_if = "Vec::is_empty")]
    rules: Vec<StoredRule>,
}

fn duplicate_object(kind: &str, name: &str, table: &str) -> SQLError {
    SQLError::Routine {
        sqlstate: "42710".into(),
        message: format!("{kind} \"{name}\" for relation \"{table}\" already exists"),
    }
}

fn undefined_object(kind: &str, name: &str, table: &str) -> SQLError {
    SQLError::Routine {
        sqlstate: "42704".into(),
        message: format!("{kind} \"{name}\" for table \"{table}\" does not exist"),
    }
}

fn undefined_rule(name: &str, relation: &str) -> SQLError {
    SQLError::Routine {
        sqlstate: "42704".into(),
        message: format!("rule \"{name}\" for relation \"{relation}\" does not exist"),
    }
}

mod lifecycle;
mod lookup;
mod persistence;
mod registry;
mod rule_binding;
mod rule_columns;
mod rule_condition_binding;
mod rule_dependencies;
mod validation;