module.exports = function (opts) {
var feed = changes(sublevel(opts.db, 'feed'))
var db = changesdown(sublevel(opts.db, 'db', opts), feed, opts)
return {
feed: feed,
db: db
}
}
test('exists multi batch', function (t) {
t.plan(expected.length + 4);
var up = level(name('main.db'), { valueEncoding: 'json' });
var feed = changes(sublevel(up, 'feed'));
var db = changesdown(sublevel(up, 'db'), feed, { valueEncoding: 'json' });
var indexes = chi({
ixdb: level(name('index.db'), { valueEncoding: 'json' }),
chdb: db,
feed: feed
});
var count = 0;
indexes.add(function (row, cb) {
t.deepEqual(relevant(row), expected.shift());
if (row.type === 'put') {
count += row.exists ? 0 : 1;
}
else if (row.type === 'del') {
count -= row.exists ? 1 : 0;
}
cb(null, { 'whatever': row.value });
});
var batches = [
[
{ type: 'put', key: 'a', value: 123 },
{ type: 'put', key: 'b', value: 555 }
],
[
{ type: 'put', key: 'a', value: 444 },
{ type: 'put', key: 'c', value: 1000 }
],
[
{ type: 'del', key: 'b' }
]
];
(function next () {
if (batches.length === 0) return;
db.batch(batches.shift(), function (err) {
t.ifError(err);
next();
});
})();
indexes.on('change', function (ch) {
if (ch.change === 3) {
t.equal(count, 2);
}
});
function relevant (x) {
if (x.type === 'del') {
return { type: x.type, key: x.key, exists: x.exists };
}
return { type: x.type, key: x.key, value: x.value, exists: x.exists };
}
});
test('eq', function (t) {
t.plan(3);
var up = level(name('main.db'), { valueEncoding: 'json' });
var feed = changes(sublevel(up, 'feed'));
var db = changesdown(sublevel(up, 'db'), feed, { valueEncoding: 'json' });
var indexes = chi({
ixdb: level(name('index.db'), { valueEncoding: 'json' }),
chdb: db,
feed: feed
});
indexes.add(function (row, cb) {
if (/^user!/.test(row.key)) {
cb(null, {
'user.name': row.value.name,
'user.space': row.value.hackerspace
});
}
else cb()
});
db.batch([
{
type: 'put',
key: 'user!1',
value: { name: 'substack', hackerspace: 'sudoroom' }
},
{
type: 'put',
key: 'user!2',
value: { name: 'mk30', hackerspace: 'sudoroom' }
},
{
type: 'put',
key: 'user!3',
value: { name: 'mitch', hackerspace: 'noisebridge' }
},
{
type: 'put',
key: 'ignore!me',
value: {}
}
], ready);
function ready (err) {
t.ifError(err);
indexes.createReadStream('user.name', { eq: 'mitch' })
.pipe(collect(function (rows) {
t.deepEqual(rows, [
{
key: 'user!3',
value: { name: 'mitch', hackerspace: 'noisebridge' },
index: 'mitch'
}
], 'user.name eq mitch');
}));
indexes.createReadStream('user.space', { eq: 'sudoroom' })
.pipe(collect(function (rows) {
t.deepEqual(rows, [
{
key: 'user!1',
value: { name: 'substack', hackerspace: 'sudoroom' },
index: 'sudoroom'
},
{
key: 'user!2',
value: { name: 'mk30', hackerspace: 'sudoroom' },
index: 'sudoroom'
},
], 'user.space eq sudoroom');
}));
}
});