smallhelm/level-fact-base

Store immutable facts and query them with datalog.

level-fact-base's Issues

A few questions

Very cool library!
I just have a few questions if you don't mind:

1. Can you point me to where in the source the join magic happens?
2. The examples show equality-based queries. Are there plans to support other operators like > < etc?

"Error: can only encode arrays" with "Date" type

I get an "Error can only encode arrays" when passing a Date object as a value. When I call .toISOString() on the Date I get the validation error from src/schemaTypes.js

I believe the issue is here https://github.com/dominictarr/charwise/blob/master/codec/object.js#L40

    function encodeItem(item) {
        if (typeof item === 'object') {
            return encode(item);
        }
        return escape(codec.encode(item));
}

charwise just tests for objects, evaluating true for Date then passes it to a function that expects an array.

Stacktrace follows

 node index.js
Error: can only encode arrays
    at encode (/home/simon/projects/lfb/node_modules/charwise/codec/object.js:27:44)
    at encodeItem (/home/simon/projects/lfb/node_modules/charwise/codec/object.js:41:20)
    at Object.encode (/home/simon/projects/lfb/node_modules/charwise/codec/object.js:33:24)
    at Object.exports.encode (/home/simon/projects/lfb/node_modules/charwise/index.js:39:28)
    at Codec.encodeKey (/home/simon/projects/lfb/node_modules/level-codec/index.js:32:45)
    at /home/simon/projects/lfb/node_modules/level-codec/index.js:53:17
    at Array.map (native)
    at Codec.encodeBatch (/home/simon/projects/lfb/node_modules/level-codec/index.js:50:14)
    at DB._batch (/home/simon/projects/lfb/node_modules/encoding-down/index.js:71:20)
    at DB.AbstractLevelDOWN.batch (/home/simon/projects/lfb/node_modules/abstract-leveldown/abstract-leveldown.js:181:8)
    at LevelUP.batch (/home/simon/projects/lfb/node_modules/levelup/lib/levelup.js:255:11)
    at transact (/home/simon/projects/lfb/node_modules/level-fact-base/src/index.js:126:6)
    at /home/simon/projects/lfb/node_modules/level-fact-base/src/index.js:234:7
    at Object.push (/home/simon/projects/lfb/node_modules/fastq/queue.js:88:14)
    at /home/simon/projects/lfb/node_modules/level-fact-base/src/index.js:344:19
    at onLoad (/home/simon/projects/lfb/node_modules/level-fact-base/src/index.js:308:7)
    at Object.transact (/home/simon/projects/lfb/node_modules/level-fact-base/src/index.js:342:7)
    at main (/home/simon/projects/lfb/index.js:85:6)
    at <anonymous>
    at process._tickCallback (internal/process/next_tick.js:188:7) undefined