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import {AbstractObject} from "./_abstract_object";
import {xmlToArray} from "../xml_utils";
import {IRegistry} from "../_iregistry";
import {DDIC} from "../ddic";
import {AbstractType} from "../abap/types/basic/_abstract_type";
import {IObjectAndToken} from "../_iddic_references";
enum ViewClass {
ExternalView = "X",
}
export class View extends AbstractObject {
private parsedData: {
header: {
VIEWCLASS: string,
DDTEXT: string,
},
fields: {
VIEWFIELD: string,
TABNAME: string,
FIELDNAME: string,
KEYFLAG: string,
}[],
join: {
LTAB: string,
LFIELD: string,
OPERATOR: string,
RTAB: string,
RFIELD: string,
}[]} | undefined;
public getType(): string {
return "VIEW";
}
public getAllowedNaming() {
return {
maxLength: 16,
allowNamespace: true,
};
}
public getFields() {
if (this.parsedData === undefined) {
this.parseXML();
}
return this.parsedData?.fields;
}
public getJoin() {
if (this.parsedData === undefined) {
this.parseXML();
}
return this.parsedData?.join;
}
public setDirty(): void {
this.parsedData = undefined;
super.setDirty();
}
public parseType(reg: IRegistry): AbstractType {
if (this.parsedData === undefined) {
this.parseXML();
}
if (this.parsedData === undefined) {
return new Types.UnknownType("View, parser error", this.getName());
}
const components: Types.IStructureComponent[] = [];
const references: IObjectAndToken[] = [];
const ddic = new DDIC(reg);
for (const field of this.parsedData.fields) {
if (field.VIEWFIELD === "*" || field.VIEWFIELD === "-") {
// ignore, this is a special case of old style .INCLUDE
continue;
} else if (this.parsedData.header.VIEWCLASS === ViewClass.ExternalView) {
components.push({
name: field.VIEWFIELD,
type: new Types.VoidType("ExternalView")});
continue;
} else if (field.TABNAME === this.getName()) {
throw new Error("Unexpected self reference in view " + this.getName() + ", " + field.FIELDNAME + " " + field.FIELDNAME);
}
const lookup = ddic.lookupTableOrView(field.TABNAME);
let found = lookup.type;
if (lookup.object) {
references.push({object: lookup.object});
}
if (field.VIEWFIELD === ".APPEND") {
// it is already expanded in the abapGit xml
continue;
}
if (found instanceof Types.StructureType) {
const s = found.getComponentByName(field.FIELDNAME);
if (s === undefined) {
found = new Types.UnknownType(field.FIELDNAME + " not found in " + field.TABNAME + ", VIEW parse type");
} else {
found = s;
}
}
components.push({
name: field.VIEWFIELD,
type: found});
}
reg.getDDICReferences().setUsing(this, references);
if (components.length === 0) {
return new Types.UnknownType("View " + this.getName() + " does not contain any components");
}
return new Types.StructureType(components, this.getName());
}
public listKeys(): string[] {
if (this.parsedData === undefined) {
this.parseXML();
}
const ret: string[] = [];
for (const p of this.parsedData?.fields || []) {
if (p.KEYFLAG === "X") {
ret.push(p.FIELDNAME);
}
}
return ret;
}
public getDescription(): string | undefined {
if (this.parsedData === undefined) {
this.parseXML();
}
return this.parsedData?.header.DDTEXT;
}
///////////////
private parseXML() {
this.parsedData = {
header: {
VIEWCLASS: "",
DDTEXT: "",
},
fields: [],
join: [],
};
const parsed = super.parseRaw2();
if (parsed === undefined || parsed.abapGit === undefined) {
return;
}
const header = parsed.abapGit["asx:abap"]["asx:values"]?.DD25V;
this.parsedData.header = {
VIEWCLASS: header?.VIEWCLASS || "",
DDTEXT: header?.DDTEXT || "",
};
const fields = parsed.abapGit["asx:abap"]["asx:values"]?.DD27P_TABLE;
for (const field of xmlToArray(fields?.DD27P)) {
this.parsedData.fields.push({
VIEWFIELD: field.VIEWFIELD,
TABNAME: field.TABNAME,
FIELDNAME: field.FIELDNAME,
KEYFLAG: field.KEYFLAG,
});
}
const join = parsed.abapGit["asx:abap"]["asx:values"]?.DD28J_TABLE;
for (const j of xmlToArray(join?.DD28J)) {
this.parsedData.join.push({
LTAB: j.LTAB,
LFIELD: j.LFIELD,
OPERATOR: j.OPERATOR,
RTAB: j.RTAB,
RFIELD: j.RFIELD,
});
}
}
}
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