All files / src/abap/2_statements/expressions select.ts

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
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
3x
3x
3x
3x
3x
3x
3x
3x
3x
3x
3x
3x
3x
3x
3x
3x
3x
3x
3x
3x
3x
3x
3x
3x
3x
3x
3x
3x
3x
3x
1x
import {seq, per, str, Expression, altPrio, optPrio, ver, tok} from "../combi";
import {SQLFieldList, SQLFrom, SQLCond, SQLSource, SQLClient, DatabaseConnection, SQLIntoTable, SQLOrderBy, SQLHaving, SQLForAllEntries, SQLHints, SQLFields, SQLIntoList} from ".";
import {Version} from "../../../version";
import {IStatementRunnable} from "../statement_runnable";
import {SQLGroupBy} from "./sql_group_by";
import {SQLIntoStructure} from "./sql_into_structure";
import {WParenLeftW, WParenRightW} from "../../1_lexer/tokens";
import {SQLFieldName} from "./sql_field_name";
import {SQLUpTo} from "./sql_up_to";
 
export class Select extends Expression {
  public getRunnable(): IStatementRunnable {
    const into = altPrio(SQLIntoTable, SQLIntoStructure, SQLIntoList);
 
    const where = seq("WHERE", SQLCond);
 
    const offset = ver(Version.v751, seq("OFFSET", SQLSource));
 
    const bypass = str("BYPASSING BUFFER");
 
    const fields = ver(Version.v750, SQLFields);
 
    // todo, HINTS cannot be anywhere, need an expression dedicated for strict sql
    const perm = per(SQLFrom, into, SQLForAllEntries, where,
                     SQLOrderBy, SQLUpTo, offset, SQLClient, SQLHaving,
                     bypass, SQLGroupBy, fields, DatabaseConnection, SQLHints);
 
    const permSingle = per(SQLFrom, altPrio(SQLIntoStructure, SQLIntoList), where, SQLClient,
                           bypass, fields, DatabaseConnection, SQLHints);
 
    const paren = seq(tok(WParenLeftW), SQLFieldName, tok(WParenRightW));
 
    const fieldList = optPrio(altPrio(SQLFieldList, paren));
 
    const single = seq("SINGLE", optPrio("FOR UPDATE"), fieldList, permSingle);
 
    const other = seq(optPrio("DISTINCT"), fieldList, perm);
 
    const ret = seq("SELECT", altPrio(single, other));
 
    return ret;
  }
}