Metasheet

XML metasheet "@TABLEAU" guide.

What is a metasheet in XML? #

A metasheet is a comment block normally written at the beginning of an XML file, which must begin with keyword @TABLEAU and define types of attributes of nodes in the following lines. e.g.:

<?xml version="1.0" encoding="UTF-8"?>
<!--
<@TABLEAU>
    <Item Sheet="Sheet1" Alias="ItemConf" OrderedMap="true" Index="(ID,Type)@Item" />
    <Item Sheet="Sheet2" Alias="FruitConf" Sep="," Subsep=":" FieldPresence=“true” />
</@TABLEAU>

<Sheet1>
    <ID>uint32</ID>
    <Num>int32</Num>
    <Value>uint64</Value>
    <Weight>int64</Weight>
    <Percentage>float</Percentage>
    <Ratio>double</Ratio>
    <Name>string</Name>
    <Blob>bytes</Blob>
    <OK>bool</OK>
</Sheet1>

<Sheet2>
    <Countries Key="map<string, Country>" Desc="string">
        <Items Name="map<string, Item>" Num="int32" />
    </Countries>
</Sheet2>
-->

Without metasheet #

If one XML file has no metasheet (In other words, has no comment block beginning with @TABLEAU), no protobuf and json will be generated.