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WIP: Add SQL array type support in createEntity #276

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WIP: Add SQL array type support in createEntity #276

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2 changes: 2 additions & 0 deletions CHANGELOG.md
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,8 @@

## [Unreleased][unreleased]

- Add SQL array type support in createEntity

## [3.0.0-alpha.1][] - 2023-05-27

- Update metadomain to 2.0.0-alpha.1
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74 changes: 45 additions & 29 deletions lib/pg.js
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Expand Up @@ -17,6 +17,8 @@ const PG_TYPES = {
bigint: { metadata: { pg: 'bigint' } },
enum: { metadata: { pg: 'varchar' } },
json: { metadata: { pg: 'jsonb' } },
array: { metadata: { pg: 'array' } },
set: { metadata: { pg: 'array' } },

real: { js: 'number', metadata: { pg: 'real' } },
double: { js: 'number', metadata: { pg: 'double precision' } },
Expand Down Expand Up @@ -154,37 +156,51 @@ const createEntity = (model, name) => {
const fields = Object.keys(flat);
for (const field of fields) {
const def = flat[field];
if (ignoreField(name, field, def)) continue;
const nullable = def.required ? ' NOT NULL' : ' NULL';
if (def.type) {
const kind = isFirstUpper(def.type) ? DB_RELATION : DB_FIELD;
const { pg } = def.constructor.metadata;
let pgType = kind === DB_FIELD ? pg : 'bigint';
if (!pgType) {
throw new Error(`Unknown type: ${def.type} in ${name}.${field}`);
}
const pgField = field + (kind === DB_FIELD ? '' : 'Id');
let defVal = '';
if (typeof def.default !== 'undefined') {
defVal = ' DEFAULT ';
if (def.type === 'datetime' && def.default === 'now') {
defVal += `CURRENT_TIMESTAMP`;
} else {
const quoted = def.type === 'number' || def.type === 'boolean';
defVal += quoted ? def.default : `'${def.default}'`;
}
}
if (def.length?.max) pgType = `${pgType}(${def.length.max})`;
if (def.index || def.unique) {
idx.push(createIndex(name, field, def, entity));
if (ignoreField(name, field, def) || !def.type) continue;
const kind = isFirstUpper(def.type) ? DB_RELATION : DB_FIELD;
const { pg } = def.constructor.metadata;
let pgType = kind === DB_FIELD ? pg : 'bigint';
if (!pgType) {
throw new Error(`Unknown type: ${def.type} in ${name}.${field}`);
}
const pgField = field + (kind === DB_FIELD ? '' : 'Id');
let defVal = '';
if (typeof def.default !== 'undefined') {
defVal = ' DEFAULT ';
if (def.type === 'datetime' && def.default === 'now') {
defVal += `CURRENT_TIMESTAMP`;
} else {
const quoted = def.type === 'number' || def.type === 'boolean';
defVal += quoted ? def.default : `'${def.default}'`;
}
sql.push(` "${pgField}" ${pgType}${nullable}${defVal},`);
if (kind === DB_RELATION) {
const ref = model.entities.get(def.type);
if (!ref) throw new Error(`Unknown schema: ${def.type}`);
const refId = ref.kind === 'registry';
idx.push(foreignKey(name, field, def, refId));
}
const maxLength = def.length?.max;
if (pgType.toLowerCase() === 'array') {
const { pg: pgArrayType } = def.value?.constructor.metadata || null;
if (!pgArrayType)
throw new Error(
`Unknown array type: ${def.value?.type} in ${name}.${field}`,
);
const isInt = (num, grThn = 0) => Number.isInteger(num) && num > grThn;
const dims = def.dims || (maxLength ? [maxLength] : undefined);
pgType = `${pgArrayType}`;
pgType += dims?.length > 1 || isInt(dims, 1) ? '' : ' ARRAY';
if (Array.isArray(dims)) {
pgType += dims.map((dim) => `[${isInt(dim) ? dim : ''}]`).join('');
} else if (isInt(dims)) {
pgType += Array(dims).fill('[]').join('');
}
} else if (maxLength) pgType = `${pgType}(${maxLength})`;
if (def.index || def.unique) {
idx.push(createIndex(name, field, def, entity));
}
const nullable = def.required ? ' NOT NULL' : ' NULL';
sql.push(` "${pgField}" ${pgType}${nullable}${defVal},`);
if (kind === DB_RELATION) {
const ref = model.entities.get(def.type);
if (!ref) throw new Error(`Unknown schema: ${def.type}`);
const refId = ref.kind === 'registry';
idx.push(foreignKey(name, field, def, refId));
}
}
const indexes = Object.keys(entity.indexes);
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