@forestadmin/datasource-toolkit
Version:
75 lines • 7.62 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const errors_1 = require("../errors");
class SchemaUtils {
static throwIfAlreadyDefinedField(schema, fieldName, collectionName) {
SchemaUtils.throwIfAccessingFieldFromRelation(fieldName, collectionName);
if (schema.fields[fieldName]) {
throw new errors_1.AlreadyDefinedFieldError({ fieldName, collectionName });
}
}
static throwIfMissingField(schema, fieldName, collectionName) {
SchemaUtils.throwIfAccessingFieldFromRelation(fieldName, collectionName);
if (!schema.fields[fieldName]) {
throw new errors_1.MissingFieldError({
fieldName,
availableFields: Object.keys(schema.fields),
collectionName,
});
}
}
static getField(schema, fieldName, collectionName) {
SchemaUtils.throwIfMissingField(schema, fieldName, collectionName);
return schema.fields[fieldName];
}
static getColumn(schema, fieldName, collectionName) {
SchemaUtils.throwIfAccessingFieldFromRelation(fieldName, collectionName);
const columns = SchemaUtils.getColumnNames(schema);
if (!columns.find(name => name === fieldName)) {
throw new errors_1.MissingColumnError({ fieldName, availableFields: columns, collectionName });
}
return schema.fields[fieldName];
}
static getRelation(schema, relationName, collectionName) {
SchemaUtils.throwIfAccessingFieldFromRelation(relationName, collectionName);
const relations = Object.keys(schema.fields).filter(name => schema.fields[name].type !== 'Column');
if (!relations.find(name => name === relationName)) {
throw new errors_1.MissingRelationError({
fieldName: relationName,
availableFields: relations,
collectionName,
});
}
return schema.fields[relationName];
}
static getPrimaryKeys(schema) {
return Object.keys(schema.fields).filter(name => this.isPrimaryKey(schema, name));
}
static isPrimaryKey(schema, fieldName) {
const field = this.getField(schema, fieldName);
return field.type === 'Column' && field.isPrimaryKey;
}
static isForeignKey(schema, name) {
const field = this.getField(schema, name);
return (field.type === 'Column' &&
Object.values(schema.fields).some(relation => relation.type === 'ManyToOne' && relation.foreignKey === name));
}
static getToManyRelation(schema, relationName) {
const relationFieldSchema = this.getRelation(schema, relationName);
if (relationFieldSchema.type !== 'OneToMany' && relationFieldSchema.type !== 'ManyToMany') {
throw new Error(`Relation ${relationName} has invalid type should be one of ` +
`${'OneToMany'} or ${'ManyToMany'}.`);
}
return relationFieldSchema;
}
static getColumnNames(schema) {
return Object.keys(schema.fields).filter(name => SchemaUtils.getField(schema, name).type === 'Column');
}
static throwIfAccessingFieldFromRelation(fieldName, collectionName) {
if (fieldName.includes(':')) {
throw new errors_1.RelationFieldAccessDeniedError({ fieldName, collectionName });
}
}
}
exports.default = SchemaUtils;
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