rawsql-ts
Version:
High-performance SQL parser and AST analyzer written in TypeScript. Provides fast parsing and advanced transformation capabilities.
239 lines • 10.6 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.ClauseScopedColumnReferenceCollector = void 0;
const Clause_1 = require("../models/Clause");
const SimpleSelectQuery_1 = require("../models/SimpleSelectQuery");
const ValueComponent_1 = require("../models/ValueComponent");
/**
* Collects ColumnReference nodes grouped by the root SimpleSelectQuery clause that owns them.
*
* Subquery and CTE bodies are intentionally not traversed because they have their own query-body
* ownership. Use ColumnReferenceCollector when comprehensive tree traversal is required.
*/
class ClauseScopedColumnReferenceCollector {
collect(query) {
if (!(query instanceof SimpleSelectQuery_1.SimpleSelectQuery)) {
throw new Error("ClauseScopedColumnReferenceCollector requires a SimpleSelectQuery.");
}
const result = this.createEmptyResult();
this.collectFromSelectClause(query.selectClause, result);
this.collectFromJoinClauses(query, result);
if (query.whereClause) {
this.collectFromWhereClause(query.whereClause, result);
}
if (query.groupByClause) {
this.collectFromGroupByClause(query.groupByClause, result);
}
if (query.havingClause) {
this.collectFromHavingClause(query.havingClause, result);
}
if (query.orderByClause) {
this.collectFromOrderByClause(query.orderByClause, "orderBy", result);
}
if (query.windowClause) {
this.collectFromWindowsClause(query.windowClause, result);
}
if (query.limitClause) {
this.collectFromLimitClause(query.limitClause, result);
}
if (query.offsetClause) {
this.collectFromOffsetClause(query.offsetClause, result);
}
if (query.fetchClause) {
this.collectFromFetchClause(query.fetchClause, result);
}
return result;
}
createEmptyResult() {
return {
select: [],
where: [],
joinOn: [],
groupBy: [],
having: [],
orderBy: [],
window: [],
limitOffset: [],
};
}
collectFromSelectClause(clause, result) {
if (clause.distinct instanceof Clause_1.DistinctOn) {
this.collectFromValueComponent(clause.distinct.value, "select", result);
}
for (const item of clause.items) {
this.collectFromValueComponent(item.value, "select", result);
}
}
collectFromJoinClauses(query, result) {
var _a;
if (!((_a = query.fromClause) === null || _a === void 0 ? void 0 : _a.joins)) {
return;
}
for (const join of query.fromClause.joins) {
if (join.condition instanceof Clause_1.JoinOnClause || join.condition instanceof Clause_1.JoinUsingClause) {
this.collectFromValueComponent(join.condition.condition, "joinOn", result);
}
}
}
collectFromWhereClause(clause, result) {
this.collectFromValueComponent(clause.condition, "where", result);
}
collectFromGroupByClause(clause, result) {
for (const item of clause.grouping) {
this.collectFromValueComponent(item, "groupBy", result);
}
}
collectFromHavingClause(clause, result) {
this.collectFromValueComponent(clause.condition, "having", result);
}
collectFromOrderByClause(clause, target, result) {
for (const item of clause.order) {
if (item instanceof Clause_1.OrderByItem) {
this.collectFromValueComponent(item.value, target, result);
}
else {
this.collectFromValueComponent(item, target, result);
}
}
}
collectFromLimitClause(clause, result) {
this.collectFromValueComponent(clause.value, "limitOffset", result);
}
collectFromOffsetClause(clause, result) {
this.collectFromValueComponent(clause.value, "limitOffset", result);
}
collectFromFetchClause(clause, result) {
this.collectFromValueComponent(clause.expression.count, "limitOffset", result);
}
collectFromWindowsClause(clause, result) {
for (const window of clause.windows) {
this.collectFromWindowFrameExpression(window.expression, "window", result);
}
}
collectFromValueComponent(value, target, result, expression = value) {
if (value instanceof ValueComponent_1.ColumnReference) {
result[target].push(this.createInfo(value, target, expression));
return;
}
if (value instanceof ValueComponent_1.BinaryExpression) {
this.collectFromValueComponent(value.left, target, result, value);
this.collectFromValueComponent(value.right, target, result, value);
}
else if (value instanceof ValueComponent_1.UnaryExpression) {
this.collectFromValueComponent(value.expression, target, result, value);
}
else if (value instanceof ValueComponent_1.FunctionCall) {
this.collectFromFunctionCall(value, target, result);
}
else if (value instanceof ValueComponent_1.CaseExpression) {
if (value.condition) {
this.collectFromValueComponent(value.condition, target, result, value);
}
for (const pair of value.switchCase.cases) {
this.collectFromValueComponent(pair.key, target, result, value);
this.collectFromValueComponent(pair.value, target, result, value);
}
if (value.switchCase.elseValue) {
this.collectFromValueComponent(value.switchCase.elseValue, target, result, value);
}
}
else if (value instanceof ValueComponent_1.ParenExpression) {
this.collectFromValueComponent(value.expression, target, result, value);
}
else if (value instanceof ValueComponent_1.CastExpression) {
this.collectFromValueComponent(value.input, target, result, value);
}
else if (value instanceof ValueComponent_1.BetweenExpression) {
this.collectFromValueComponent(value.expression, target, result, value);
this.collectFromValueComponent(value.lower, target, result, value);
this.collectFromValueComponent(value.upper, target, result, value);
}
else if (value instanceof ValueComponent_1.JsonPredicateExpression) {
this.collectFromValueComponent(value.expression, target, result, value);
}
else if (value instanceof ValueComponent_1.ArrayExpression) {
this.collectFromValueComponent(value.expression, target, result, value);
}
else if (value instanceof ValueComponent_1.ArraySliceExpression) {
this.collectFromValueComponent(value.array, target, result, value);
if (value.startIndex) {
this.collectFromValueComponent(value.startIndex, target, result, value);
}
if (value.endIndex) {
this.collectFromValueComponent(value.endIndex, target, result, value);
}
}
else if (value instanceof ValueComponent_1.ArrayIndexExpression) {
this.collectFromValueComponent(value.array, target, result, value);
this.collectFromValueComponent(value.index, target, result, value);
}
else if (value instanceof ValueComponent_1.ValueList) {
for (const item of value.values) {
this.collectFromValueComponent(item, target, result, value);
}
}
else if (value instanceof ValueComponent_1.TupleExpression) {
for (const item of value.values) {
this.collectFromValueComponent(item, target, result, value);
}
}
else if (value instanceof ValueComponent_1.TypeValue && value.argument) {
this.collectFromValueComponent(value.argument, target, result, value);
}
else if (value instanceof ValueComponent_1.InlineQuery || value instanceof ValueComponent_1.ArrayQueryExpression) {
return;
}
}
collectFromFunctionCall(value, target, result) {
if (value.argument) {
this.collectFromValueComponent(value.argument, target, result, value);
}
if (value.filterCondition) {
this.collectFromValueComponent(value.filterCondition, target, result, value);
}
if (value.withinGroup) {
this.collectFromOrderByClause(value.withinGroup, target, result);
}
if (value.internalOrderBy) {
this.collectFromOrderByClause(value.internalOrderBy, target, result);
}
if (value.over instanceof ValueComponent_1.WindowFrameExpression) {
this.collectFromWindowFrameExpression(value.over, target, result);
}
}
collectFromWindowFrameExpression(value, target, result) {
if (value.partition) {
this.collectFromValueComponent(value.partition.value, target, result);
}
if (value.order) {
this.collectFromOrderByClause(value.order, target, result);
}
if (value.frameSpec) {
if (value.frameSpec.startBound instanceof ValueComponent_1.WindowFrameBoundaryValue) {
this.collectFromValueComponent(value.frameSpec.startBound.value, target, result);
}
if (value.frameSpec.endBound instanceof ValueComponent_1.WindowFrameBoundaryValue) {
this.collectFromValueComponent(value.frameSpec.endBound.value, target, result);
}
}
}
createInfo(reference, clause, expression) {
var _a, _b;
const namespaces = (_b = (_a = reference.namespaces) === null || _a === void 0 ? void 0 : _a.map(namespace => namespace.name)) !== null && _b !== void 0 ? _b : [];
const columnName = this.getNameText(reference.qualifiedName.name);
return {
clause,
reference,
qualifiedName: reference.qualifiedName.toString(),
namespaces,
namespace: namespaces.length > 0 ? namespaces.join(".") : null,
column: columnName,
expression,
};
}
getNameText(name) {
return name instanceof ValueComponent_1.IdentifierString ? name.name : name.value;
}
}
exports.ClauseScopedColumnReferenceCollector = ClauseScopedColumnReferenceCollector;
//# sourceMappingURL=ClauseScopedColumnReferenceCollector.js.map