iframe-proxy | Sunbelt Computer Software

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const { fromSql, toSql } = require('..');

const utils = require('../utils');

async function types(sql) {

const typeInfo = await sql`SELECT regtype('vector')::oid AS vector, regtype('halfvec')::oid AS halfvec, regtype('sparsevec')::oid AS sparsevec`;

const vectorOid = typeInfo[0].vector;

const halfvecOid = typeInfo[0].halfvec;

const sparsevecOid = typeInfo[0].sparsevec;

if (!vectorOid) {

throw new Error('vector type not found in the database');

}

const types = {

vector: {

to: vectorOid,

from: [vectorOid],

serialize: (v) => utils.vectorToSql(v),

parse: (v) => utils.vectorFromSql(v)

}

};

if (halfvecOid) {

types['halfvec'] = {

to: halfvecOid,

from: [halfvecOid],

serialize: (v) => utils.halfvecToSql(v),

parse: (v) => utils.halfvecFromSql(v)

};

}

if (sparsevecOid) {

types['sparsevec'] = {

to: sparsevecOid,

from: [sparsevecOid],

serialize: (v) => utils.sparsevecToSql(v),

parse: (v) => utils.sparsevecFromSql(v)

};

}

return types;

}

module.exports = {types, fromSql, toSql};

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