How to use @hpcc-js/ddl-shim - 10 common examples

readDDLViews(ddlViews: DDL2.IView[]) {
        for (const ddlView of ddlViews) {
            const element = new Element(this._ec).id(ddlView.id);
            this._ec.append(element);
            const hipiePipeline = element.hipiePipeline();
            this.readDatasourceRef(ddlView.datasource, hipiePipeline.datasource() as DSPicker, this._ec);
            for (const activity of ddlView.activities) {
                if (DDL2.isProjectActivity(activity)) {
                    const project = this.readProject(activity);
                    hipiePipeline.project(project);
                }
                if (DDL2.isFilterActivity(activity)) {
                    const filters = this.readFilters(activity, this._ec);
                    hipiePipeline.filters(filters);
                }
                if (DDL2.isGroupByActivity(activity)) {
                    const groupBy = this.readGroupBy(activity);
                    hipiePipeline.groupBy(groupBy);
                }
                if (DDL2.isSortActivity(activity)) {
                    const sort = this.readSort(activity);
                    hipiePipeline.sort(sort);
                }
                if (DDL2.isLimitActivity(activity)) {
                    const limit = this.readLimit(activity);
                    hipiePipeline.limit(limit);
                }
            }

readDDLViews(ddlViews: DDL2.IView[]) {
        for (const ddlView of ddlViews) {
            const element = new Element(this._ec).id(ddlView.id);
            this._ec.append(element);
            const hipiePipeline = element.hipiePipeline();
            this.readDatasourceRef(ddlView.datasource, hipiePipeline.datasource() as DSPicker, this._ec);
            for (const activity of ddlView.activities) {
                if (DDL2.isProjectActivity(activity)) {
                    const project = this.readProject(activity);
                    hipiePipeline.project(project);
                }
                if (DDL2.isFilterActivity(activity)) {
                    const filters = this.readFilters(activity, this._ec);
                    hipiePipeline.filters(filters);
                }
                if (DDL2.isGroupByActivity(activity)) {
                    const groupBy = this.readGroupBy(activity);
                    hipiePipeline.groupBy(groupBy);
                }
                if (DDL2.isSortActivity(activity)) {
                    const sort = this.readSort(activity);
                    hipiePipeline.sort(sort);
                }
                if (DDL2.isLimitActivity(activity)) {
                    const limit = this.readLimit(activity);
                    hipiePipeline.limit(limit);
                }
            }
            this.readVisualization(ddlView.visualization, element.visualization());
        }
    }

const project = this.readProject(activity);
                    hipiePipeline.project(project);
                }
                if (DDL2.isFilterActivity(activity)) {
                    const filters = this.readFilters(activity, this._ec);
                    hipiePipeline.filters(filters);
                }
                if (DDL2.isGroupByActivity(activity)) {
                    const groupBy = this.readGroupBy(activity);
                    hipiePipeline.groupBy(groupBy);
                }
                if (DDL2.isSortActivity(activity)) {
                    const sort = this.readSort(activity);
                    hipiePipeline.sort(sort);
                }
                if (DDL2.isLimitActivity(activity)) {
                    const limit = this.readLimit(activity);
                    hipiePipeline.limit(limit);
                }
            }
            this.readVisualization(ddlView.visualization, element.visualization());
        }
    }

const hipiePipeline = element.hipiePipeline();
            this.readDatasourceRef(ddlView.datasource, hipiePipeline.datasource() as DSPicker, this._ec);
            for (const activity of ddlView.activities) {
                if (DDL2.isProjectActivity(activity)) {
                    const project = this.readProject(activity);
                    hipiePipeline.project(project);
                }
                if (DDL2.isFilterActivity(activity)) {
                    const filters = this.readFilters(activity, this._ec);
                    hipiePipeline.filters(filters);
                }
                if (DDL2.isGroupByActivity(activity)) {
                    const groupBy = this.readGroupBy(activity);
                    hipiePipeline.groupBy(groupBy);
                }
                if (DDL2.isSortActivity(activity)) {
                    const sort = this.readSort(activity);
                    hipiePipeline.sort(sort);
                }
                if (DDL2.isLimitActivity(activity)) {
                    const limit = this.readLimit(activity);
                    hipiePipeline.limit(limit);
                }
            }
            this.readVisualization(ddlView.visualization, element.visualization());
        }
    }

filters: output.filters || this.filters
            });
        });

        if (this.WUID) {
            this.comms = new Comms.HIPIEWorkunit()
                .url(this.URL)
                .proxyMappings(proxyMappings)
                .timeout(timeout)
                .hipieResults(hipieResults)
                ;
        } else if (this.databomb) {
            this.comms = new Comms.HIPIEDatabomb()
                .hipieResults(hipieResults)
                ;
        } else if (DDL1.isHipieDatasource(datasource)) {
            this.comms = new Comms.HIPIERoxie()
                .url(datasource.URL)
                .proxyMappings(proxyMappings)
                .timeout(timeout)
                .hipieResults(hipieResults)
                ;
        }
    }

private datasourceRefID(view: DDL2.IView): string {
        const datasourceRef = view.datasource;
        if (DDL2.isRoxieServiceRef(datasourceRef)) {
            return `${this.safeID(datasourceRef.id)}_${this.safeID(datasourceRef.output)}_${this.safeID(view.id)}`;
        } else if (DDL2.isWUResultRef(datasourceRef)) {
            return `${this.safeID(datasourceRef.id)}_${this.safeID(datasourceRef.output)}`;
        }
        return `${this.safeID(datasourceRef.id)}`;
    }

readDatasourceRef(ddlDSRef: DDL2.IDatasourceRef, dsPicker: DSPicker, elementContainer: ElementContainer): this {
        if (DDL2.isRoxieServiceRef(ddlDSRef)) {
            dsPicker.datasourceID(`${ddlDSRef.id}_${ddlDSRef.output}`);
            const dsRef = dsPicker.datasourceRef() as RoxieResultRef;
            dsRef
                .request(ddlDSRef.request.map(rf => {
                    return Param.fromDDL(this._ec, rf);
                }))
                ;
        } else if (DDL2.isWUResultRef(ddlDSRef)) {
            const wu = this._dsReadDedup[ddlDSRef.id] as WU;
            dsPicker.datasourceID(wu.output(ddlDSRef.output).id());
        } else {
            dsPicker.datasourceID(ddlDSRef.id);
        }
        return this;
    }

private datasourceRefID(view: DDL2.IView): string {
        const datasourceRef = view.datasource;
        if (DDL2.isRoxieServiceRef(datasourceRef)) {
            return `${this.safeID(datasourceRef.id)}_${this.safeID(datasourceRef.output)}_${this.safeID(view.id)}`;
        } else if (DDL2.isWUResultRef(datasourceRef)) {
            return `${this.safeID(datasourceRef.id)}_${this.safeID(datasourceRef.output)}`;
        }
        return `${this.safeID(datasourceRef.id)}`;
    }

readDatasourceRef(ddlDSRef: DDL2.IDatasourceRef, dsPicker: DSPicker, elementContainer: ElementContainer): this {
        if (DDL2.isRoxieServiceRef(ddlDSRef)) {
            dsPicker.datasourceID(`${ddlDSRef.id}_${ddlDSRef.output}`);
            const dsRef = dsPicker.datasourceRef() as RoxieResultRef;
            dsRef
                .request(ddlDSRef.request.map(rf => {
                    return Param.fromDDL(this._ec, rf);
                }))
                ;
        } else if (DDL2.isWUResultRef(ddlDSRef)) {
            const wu = this._dsReadDedup[ddlDSRef.id] as WU;
            dsPicker.datasourceID(wu.output(ddlDSRef.output).id());
        } else {
            dsPicker.datasourceID(ddlDSRef.id);
        }
        return this;
    }

datasource(ddlDS: DDL1.IAnyDatasource) {
        for (const ddlOP of ddlDS.outputs) {
            for (const ddlNotify of ddlOP.notify) {
                const view = this._vizzies[ddlNotify].hipiePipeline();
                if (DDL1.isWorkunitDatasource(ddlDS)) {
                    const wuResult = new WUResult()
                        .fullUrl(this._url)
                        .resultName(ddlOP.from)
                        ;
                    view.dataSource(wuResult);
                } else if (DDL1.isDatabombDatasource(ddlDS)) {
                    const databomb = new Databomb()
                        ;
                    view.dataSource(databomb);
                } else {
                    const hipieRequest = new HipieRequest(this._owner)
                        .fullUrl(ddlDS.URL)
                        .resultName(ddlOP.from)
                        ;
                    view.dataSource(hipieRequest);
                }
            }
        }
    }
}