DataObjectParseFromJsonSchema.ajs

/*
 * This script parses the JSONschema from data-object concept with a property 'JSONschema'
 * JSON schema is read from file and stored in the JSONschema property
 * It replaces the data-object title, documentation by the schema title and description
 * It adds the schema properties to the data object
 * It finally format the object to display it with its attributes
 *
 * Source: https://www.eaprincipals.com/content/data-modeling-archi-part-2-adding-entity-attributes
 */

console.show();
console.clear();


var schema = {};

$(selection).filter("data-object").each(function (o) {
    var filePath = window.promptOpenFile({
        title: "Open JSON Schema for <<" + o.name + ">>",
        filterExtensions: ["*.json"]
    });
    var schemaTxt = "";
    if (filePath) {
        var FileReader = Java.type("java.io.FileReader");
        var theSchemaFile = new FileReader(filePath);
        data = theSchemaFile.read();
        console.log("Loading " + filePath + '...');
        while (data != -1) {
            var c = String.fromCharCode(data);
            schemaTxt += c;
            data = theSchemaFile.read();
        }
        theSchemaFile.close();
        o.prop('JSONschema', JSON.stringify(JSON.parse(schemaTxt)));
    }
    console.log("Processing schema...")
    try {
        schema = JSON.parse(o.prop('JSONschema'));
    } catch (e) {
        console.log('No such properties "JSONschema" or invalid schema.');
    }
    if (!!schema) {
        const title = schema.title;
        const description = String(schema.description);
        let attributes = "";
        let len = 0;
        o.name = title;
        o.labelVisible = true;
        o.documentation = description + '\n\n';
        o.prop('objectDescription', description)
        var len2 = description.length
        if ('properties' in schema) {
            o.documentation += '| attribute | description | type | object |\n';
            o.documentation += '|---|---|---|---|\n';
            for (let p in schema.properties) {
                len = Math.max(len, String(p).length);
            }


            for (let p in schema.properties) {
                let props = schema.properties[p];
                let desc = props.description;
                delete props.description;
                delete props.$id;
                o.documentation += '| ' + String(p) + ' | ' + desc + ' | ' + props.type + ' | ';
                if (Object.keys(props).length) {
                    desc += ' ' + JSON.stringify(props);
                    o.documentation += JSON.stringify(props);
                }
                o.prop(p, desc);

                let att = '+' + p + ":" + ' '.repeat(1 + len - String(p).length) + props.type;
                if (props.type === 'array') {
                    let typ = props.items.type;
                    att += ' of ' + typ;
                }
                len2 = Math.max(len2, att.length)
                attributes += att + '\n';
                o.documentation += ' |\n';

            }
        } else if ('enum' in schema){
            schema.enum.forEach(function(p) {
                len = Math.max(len, String(p).length);
            });

            schema.enum.forEach(function(p) {
                o.prop(p, '');
                let att = '-' + p;
                len2 = Math.max(len2, att.length)
                attributes += att + '\n';
            });
        }
        o.prop('attributes', attributes);

        len2 += 2;
        o.labelExpression = " ".repeat((len2 - o.name.length) / 2) + "${name}\n" +
            ".".repeat(len2) +
            "\n" +
            " ".repeat((len2 - description.length) / 2) + "${property:objectDescription}\n" +
            "_".repeat(len2) +
            "\n\n" +
            "${property:attributes}";


        o.fontName = "Courier New";
        o.fontSize = 9;
        o.textAlignment = TEXT_ALIGNMENT.LEFT;

        o.bounds = {width: (len2 - 2) * 8.5, height: (o.labelValue.split('\n').length + 2) * 14}

        console.log("Done.")
    } else {
        console.log("No schema to process.")
    }
});