302 lines
12 KiB
JavaScript
302 lines
12 KiB
JavaScript
import sqlGenGenSearchStr from "./sql-generator-gen-search-str";
|
|
import sqlGenGenQueryStr from "./sql-generator-gen-query-str";
|
|
import { sqlField, sqlIdent, sqlInt, sqlOperator, sqlOrderStrategy, } from "./sql-safe";
|
|
/**
|
|
* # SQL Query Generator
|
|
* @description Generates a parameterized SQLite SELECT query. All values are
|
|
* returned in `values` to be bound; identifiers are validated.
|
|
*/
|
|
export default function sqlGenerator({ tableName: passedTableName, genObject, count, targetId, }) {
|
|
const tableName = sqlIdent(passedTableName, "table name");
|
|
const finalQuery = genObject?.query ? genObject.query : undefined;
|
|
const queryKeys = finalQuery ? Object.keys(finalQuery) : undefined;
|
|
const sqlSearhValues = [];
|
|
const whereValues = [];
|
|
if (genObject?.fullTextSearch) {
|
|
throw new Error("`fullTextSearch` is not supported by SQLite. Use an FTS5 table and the `MATCH` equality instead.");
|
|
}
|
|
let { str: queryString, values } = sqlGenGenQueryStr({
|
|
table_name: tableName,
|
|
append_table_names: true,
|
|
genObject,
|
|
});
|
|
sqlSearhValues.push(...values);
|
|
const sqlSearhString = queryKeys?.map((field) => {
|
|
const queryObj = finalQuery?.[field];
|
|
if (!queryObj)
|
|
return;
|
|
if (queryObj.__query) {
|
|
const subQueryGroup = queryObj.__query;
|
|
const subSearchKeys = Object.keys(subQueryGroup);
|
|
const subSearchString = subSearchKeys
|
|
.map((_field) => {
|
|
const newSubQueryObj = subQueryGroup?.[_field];
|
|
if (newSubQueryObj) {
|
|
const { str, values } = sqlGenGenSearchStr({
|
|
queryObj: newSubQueryObj,
|
|
field: newSubQueryObj.fieldName || _field,
|
|
join: genObject?.join,
|
|
table_name: tableName,
|
|
});
|
|
whereValues.push(...values);
|
|
return str;
|
|
}
|
|
})
|
|
.filter((str) => typeof str == "string");
|
|
if (!subSearchString.length)
|
|
return;
|
|
return ("(" +
|
|
subSearchString.join(` ${sqlOperator(queryObj.operator)} `) +
|
|
")");
|
|
}
|
|
const { str, values } = sqlGenGenSearchStr({
|
|
queryObj,
|
|
field: queryObj.fieldName || field,
|
|
join: genObject?.join,
|
|
table_name: tableName,
|
|
});
|
|
whereValues.push(...values);
|
|
return str;
|
|
});
|
|
const cleanedUpSearchStr = sqlSearhString?.filter((str) => typeof str == "string");
|
|
const whereConditions = [];
|
|
if (cleanedUpSearchStr?.[0]) {
|
|
const stringOperator = sqlOperator(genObject?.searchOperator);
|
|
whereConditions.push(`(${cleanedUpSearchStr.join(` ${stringOperator} `)})`);
|
|
}
|
|
if (targetId !== undefined && targetId !== null && targetId !== "") {
|
|
const id = Number(targetId);
|
|
if (!Number.isSafeInteger(id)) {
|
|
throw new Error(`Invalid targetId: ${JSON.stringify(targetId)}`);
|
|
}
|
|
whereConditions.push(`${genObject?.join ? `${tableName}.` : ""}id = ?`);
|
|
whereValues.push(id);
|
|
}
|
|
const whereString = whereConditions.length
|
|
? `WHERE ${whereConditions.join(" AND ")}`
|
|
: "";
|
|
if (whereString) {
|
|
queryString += ` ${whereString}`;
|
|
sqlSearhValues.push(...whereValues);
|
|
}
|
|
if (genObject?.group) {
|
|
const grabGroupStr = (group) => {
|
|
if (typeof group == "object") {
|
|
return group.table
|
|
? `${sqlIdent(group.table, "table name")}.${sqlIdent(group.field, "field name")}`
|
|
: sqlField(group.field);
|
|
}
|
|
return sqlField(group);
|
|
};
|
|
const group_by_txt = Array.isArray(genObject.group)
|
|
? genObject.group.map(grabGroupStr).join(",")
|
|
: grabGroupStr(genObject.group);
|
|
queryString += ` GROUP BY ${group_by_txt}`;
|
|
}
|
|
function grabOrderString(order) {
|
|
const field = genObject?.join && !String(order.field).includes(".")
|
|
? `${tableName}.${sqlIdent(order.field, "order field")}`
|
|
: sqlField(order.field, "order field");
|
|
return ` ${field} ${sqlOrderStrategy(order.strategy)}`;
|
|
}
|
|
if (genObject?.order) {
|
|
let orderSrt = ` ORDER BY`;
|
|
const orders = (Array.isArray(genObject.order) ? genObject.order : [genObject.order]).filter(Boolean);
|
|
orderSrt += orders.map(grabOrderString).join(",");
|
|
queryString += ` ${orderSrt}`;
|
|
}
|
|
/**
|
|
* Pagination is skipped for count queries so the count covers every
|
|
* matching row
|
|
*/
|
|
if (!count) {
|
|
const { limit: rawLimit, offset: rawOffset, page } = genObject || {};
|
|
/**
|
|
* `limit: 0` has always meant "no limit"
|
|
*/
|
|
const limit = rawLimit ? sqlInt(rawLimit, "limit") : undefined;
|
|
const offset = isSet(rawOffset)
|
|
? sqlInt(rawOffset, "offset")
|
|
: isSet(page) && limit !== undefined
|
|
? Math.max(sqlInt(page, "page") - 1, 0) * limit
|
|
: undefined;
|
|
if (limit !== undefined) {
|
|
queryString += ` LIMIT ${limit}`;
|
|
}
|
|
else if (offset) {
|
|
/**
|
|
* SQLite doesn't allow OFFSET without LIMIT
|
|
*/
|
|
queryString += ` LIMIT -1`;
|
|
}
|
|
if (offset) {
|
|
queryString += ` OFFSET ${offset}`;
|
|
}
|
|
}
|
|
return {
|
|
string: queryString,
|
|
values: sqlSearhValues,
|
|
where: {
|
|
string: whereString,
|
|
values: whereString ? whereValues : [],
|
|
},
|
|
};
|
|
}
|
|
function isSet(val) {
|
|
return val !== undefined && val !== null;
|
|
}
|
|
// let queryString = (() => {
|
|
// let str = "SELECT";
|
|
// if (genObject?.select_sql) {
|
|
// str += ` ${genObject.select_sql}`;
|
|
// } else if (genObject?.selectFields?.[0]) {
|
|
// if (genObject.join) {
|
|
// str += sqlGenGrabSelectFieldSQL<T>({
|
|
// selectFields: genObject.selectFields,
|
|
// append_table_names: true,
|
|
// table_name: tableName,
|
|
// });
|
|
// } else {
|
|
// str += sqlGenGrabSelectFieldSQL({
|
|
// selectFields: genObject.selectFields,
|
|
// table_name: tableName,
|
|
// });
|
|
// }
|
|
// } else {
|
|
// if (genObject?.join) {
|
|
// str += ` ${tableName}.*`;
|
|
// } else {
|
|
// str += " *";
|
|
// }
|
|
// }
|
|
// if (genObject?.countSubQueries) {
|
|
// let countSqls: string[] = [];
|
|
// for (let i = 0; i < genObject.countSubQueries.length; i++) {
|
|
// const countSubQuery = genObject.countSubQueries[i];
|
|
// if (!countSubQuery) continue;
|
|
// const tableAlias = countSubQuery.table_alias;
|
|
// let subQStr = `(SELECT COUNT(*)`;
|
|
// subQStr += ` FROM ${countSubQuery.table}${
|
|
// tableAlias ? ` ${tableAlias}` : ""
|
|
// }`;
|
|
// subQStr += ` WHERE (`;
|
|
// for (let j = 0; j < countSubQuery.srcTrgMap.length; j++) {
|
|
// const csqSrc = countSubQuery.srcTrgMap[j];
|
|
// if (!csqSrc) continue;
|
|
// subQStr += ` ${tableAlias || countSubQuery.table}.${
|
|
// csqSrc.src
|
|
// }`;
|
|
// if (typeof csqSrc.trg == "string") {
|
|
// subQStr += ` = ?`;
|
|
// sqlSearhValues.push(csqSrc.trg);
|
|
// } else if (typeof csqSrc.trg == "object") {
|
|
// subQStr += ` = ${csqSrc.trg.table}.${csqSrc.trg.field}`;
|
|
// }
|
|
// if (j < countSubQuery.srcTrgMap.length - 1) {
|
|
// subQStr += ` AND `;
|
|
// }
|
|
// }
|
|
// subQStr += ` )) AS ${countSubQuery.alias}`;
|
|
// countSqls.push(subQStr);
|
|
// }
|
|
// str += `, ${countSqls.join(",")}`;
|
|
// }
|
|
// if (genObject?.join) {
|
|
// const existingJoinTableNames: string[] = [tableName];
|
|
// str +=
|
|
// "," +
|
|
// genObject.join
|
|
// .flat()
|
|
// .filter((j) => !isUndefined(j))
|
|
// .map((joinObj) => {
|
|
// const joinTableName = joinObj.alias
|
|
// ? joinObj.alias
|
|
// : joinObj.tableName;
|
|
// if (existingJoinTableNames.includes(joinTableName))
|
|
// return null;
|
|
// existingJoinTableNames.push(joinTableName);
|
|
// if (joinObj.group_concat) {
|
|
// return sqlGenGrabConcatStr({
|
|
// field: `${joinTableName}.${joinObj.group_concat.field}`,
|
|
// alias: joinObj.group_concat.alias,
|
|
// separator: joinObj.group_concat.separator,
|
|
// });
|
|
// } else if (joinObj.selectFields) {
|
|
// return joinObj.selectFields
|
|
// .map((selectField) => {
|
|
// if (typeof selectField == "string") {
|
|
// return `${joinTableName}.${selectField}`;
|
|
// } else if (typeof selectField == "object") {
|
|
// let aliasSelectField = selectField.count
|
|
// ? `COUNT(${joinTableName}.${selectField.field})`
|
|
// : `${joinTableName}.${selectField.field}`;
|
|
// if (selectField.alias)
|
|
// aliasSelectField += ` AS ${selectField.alias}`;
|
|
// return aliasSelectField;
|
|
// }
|
|
// })
|
|
// .join(",");
|
|
// } else {
|
|
// return `${joinTableName}.*`;
|
|
// }
|
|
// })
|
|
// .filter((_) => Boolean(_))
|
|
// .join(",");
|
|
// }
|
|
// if (
|
|
// genObject?.fullTextSearch &&
|
|
// fullTextMatchStr &&
|
|
// fullTextSearchStr
|
|
// ) {
|
|
// str += `, ${fullTextMatchStr} AS ${genObject.fullTextSearch.scoreAlias}`;
|
|
// sqlSearhValues.push(fullTextSearchStr);
|
|
// }
|
|
// str += ` FROM ${tableName}`;
|
|
// if (genObject?.join) {
|
|
// str +=
|
|
// " " +
|
|
// genObject.join
|
|
// .flat()
|
|
// .filter((j) => !isUndefined(j))
|
|
// .map((join) => {
|
|
// return (
|
|
// join.joinType +
|
|
// " " +
|
|
// (join.alias
|
|
// ? `${join.tableName}` + " " + join.alias
|
|
// : `${join.tableName}`) +
|
|
// " ON " +
|
|
// (() => {
|
|
// if (Array.isArray(join.match)) {
|
|
// return (
|
|
// "(" +
|
|
// join.match
|
|
// .map((mtch) =>
|
|
// sqlGenGenJoinStr({
|
|
// mtch,
|
|
// join,
|
|
// table_name: tableName,
|
|
// }),
|
|
// )
|
|
// .join(
|
|
// join.operator
|
|
// ? ` ${join.operator} `
|
|
// : " AND ",
|
|
// ) +
|
|
// ")"
|
|
// );
|
|
// } else if (typeof join.match == "object") {
|
|
// return sqlGenGenJoinStr({
|
|
// mtch: join.match,
|
|
// join,
|
|
// table_name: tableName,
|
|
// });
|
|
// }
|
|
// })()
|
|
// );
|
|
// })
|
|
// .join(" ");
|
|
// }
|
|
// return str;
|
|
// })();
|