diffusion/src/node_modules/services/fetch-query/fetch-query-serialiser.js

Diffusion JavaScript client

var Codec = require('io/codec');
var LEESS = require('serialisers/long-encoded-enum-set-serialiser');
var TopicSelectorSerialiser = require('topics/topic-selector-serialiser');

function writeLimit(output, limit) {
    if (limit === undefined) {
        Codec.writeByte(output, 0);
    }
    else {
        Codec.writeByte(output, 1);
        Codec.writeString(output, limit.path);
        Codec.writeBoolean(output, limit.includesPath);
    }
}

function writeRange(output, range) {
    writeLimit(output, range.from);
    writeLimit(output, range.to);
}

var serialiser = {
    write : function(output, query) {
        TopicSelectorSerialiser.write(output, query.selector);
        writeRange(output, query.range);
        LEESS.write(output, query.topicTypes);
        Codec.writeBoolean(output, query.withValues);
        Codec.writeBoolean(output, query.withProperties);
        Codec.writeInt32(output, query.limit);
        Codec.writeInt32(output, query.maximumResultSize);
    }
};

module.exports = serialiser;