Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 1x 1x | import {IStatement} from "./_statement";
import {seq, alt, opt, optPrio, per, plus, altPrio, verNotLang} from "../combi";
import {Target, Source, Dynamic, ComponentCompare, ComponentCond, SimpleName, FieldOffset, FieldLength, SimpleFieldChain2} from "../expressions";
import {IStatementRunnable} from "../statement_runnable";
import {LanguageVersion} from "../../../version";
export class DeleteInternal implements IStatement {
public getMatcher(): IStatementRunnable {
// todo, is READ and DELETE similar? something can be reused?
const index = seq("INDEX", Source);
const keyName = altPrio(SimpleName, Dynamic);
const using = seq("USING KEY", keyName);
const from = seq("FROM", Source);
const fromTo = seq(optPrio(from),
optPrio(seq("TO", Source)));
// WHERE (dynamic) blocked in KeyUser
const where = seq("WHERE", alt(ComponentCond, verNotLang(LanguageVersion.KeyUser, Dynamic)));
const key = seq("WITH TABLE KEY",
opt(seq(keyName, "COMPONENTS")),
plus(ComponentCompare));
const table = seq("TABLE",
Target,
alt(per(index, using), seq(optPrio(from), optPrio(using)), key));
const other = seq(Target,
alt(per(index, using), fromTo, key), opt(where));
const f = seq(SimpleFieldChain2, optPrio(FieldOffset), optPrio(FieldLength));
const adjacent = seq("ADJACENT DUPLICATES FROM",
Target,
optPrio(using),
opt(seq("COMPARING", altPrio("ALL FIELDS", plus(altPrio(f, Dynamic))))),
optPrio(using));
return seq("DELETE", alt(table, adjacent, other));
}
} |