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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x | import {CDSCondition, CDSRelation} from ".";
import {altPrio, Expression, seq, opt, optPrio, regex} from "../../abap/2_statements/combi";
import {IStatementRunnable} from "../../abap/2_statements/statement_runnable";
import {CDSCardinality} from "./cds_cardinality";
export class CDSAssociation extends Expression {
public getRunnable(): IStatementRunnable {
// Text cardinality: "to exact one", "to one", "to many" — no brackets
const textCardinality = seq(opt("EXACT"), altPrio("ONE", "MANY"));
// Numeric cardinality: any non-negative integer or * (e.g. [0..1], [1..2], [0..*])
const cardNum = altPrio(regex(/^\d+$/), "*");
const numericCardinality = seq("[", cardNum, optPrio(seq(".", ".", cardNum)), "]");
// Text-based OF form: "association of one to many Target on ..." — text cardinality includes "TO"
const ofTextSide = altPrio(seq("EXACT", "ONE"), "ONE", "MANY");
const ofTextForm = seq("ASSOCIATION", "OF", ofTextSide, "TO", ofTextSide, CDSRelation, "ON", CDSCondition);
// Numeric OF form: "association of [0..1] to Target on ..."
const ofNumericForm = seq("ASSOCIATION", "OF", numericCardinality, "TO", CDSRelation, "ON", CDSCondition);
// "association [0..1] to Target as _Alias on condition" — standard form
const standardForm = seq("ASSOCIATION", optPrio(CDSCardinality), "TO", opt(altPrio(textCardinality, "PARENT")), CDSRelation, "ON", CDSCondition,
opt(seq("WITH", "DEFAULT", "FILTER", CDSCondition)));
return altPrio(ofTextForm, ofNumericForm, standardForm);
}
}
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