Examples with Prepared org.h2.test.db.Db.Prepared used on opensource projects

Example 21 with Prepared

use of org.h2.test.db.Db.Prepared in project h2database by h2database.

the class Parser method parsePrepared.

private Prepared parsePrepared() {
    int start = lastParseIndex;
    Prepared c = null;
    String token = currentToken;
    if (token.length() == 0) {
        c = new NoOperation(session);
    } else {
        char first = token.charAt(0);
        switch(first) {
            case '?':
                // read the ? as a parameter
                readTerm();
                // this is an 'out' parameter - set a dummy value
                parameters.get(0).setValue(ValueNull.INSTANCE);
                read("=");
                read("CALL");
                c = parseCall();
                break;
            case '(':
                c = parseSelect();
                break;
            case 'a':
            case 'A':
                if (readIf("ALTER")) {
                    c = parseAlter();
                } else if (readIf("ANALYZE")) {
                    c = parseAnalyze();
                }
                break;
            case 'b':
            case 'B':
                if (readIf("BACKUP")) {
                    c = parseBackup();
                } else if (readIf("BEGIN")) {
                    c = parseBegin();
                }
                break;
            case 'c':
            case 'C':
                if (readIf("COMMIT")) {
                    c = parseCommit();
                } else if (readIf("CREATE")) {
                    c = parseCreate();
                } else if (readIf("CALL")) {
                    c = parseCall();
                } else if (readIf("CHECKPOINT")) {
                    c = parseCheckpoint();
                } else if (readIf("COMMENT")) {
                    c = parseComment();
                }
                break;
            case 'd':
            case 'D':
                if (readIf("DELETE")) {
                    c = parseDelete();
                } else if (readIf("DROP")) {
                    c = parseDrop();
                } else if (readIf("DECLARE")) {
                    // support for DECLARE GLOBAL TEMPORARY TABLE...
                    c = parseCreate();
                } else if (readIf("DEALLOCATE")) {
                    c = parseDeallocate();
                }
                break;
            case 'e':
            case 'E':
                if (readIf("EXPLAIN")) {
                    c = parseExplain();
                } else if (readIf("EXECUTE")) {
                    c = parseExecute();
                }
                break;
            case 'f':
            case 'F':
                if (isToken("FROM")) {
                    c = parseSelect();
                }
                break;
            case 'g':
            case 'G':
                if (readIf("GRANT")) {
                    c = parseGrantRevoke(CommandInterface.GRANT);
                }
                break;
            case 'h':
            case 'H':
                if (readIf("HELP")) {
                    c = parseHelp();
                }
                break;
            case 'i':
            case 'I':
                if (readIf("INSERT")) {
                    c = parseInsert();
                }
                break;
            case 'm':
            case 'M':
                if (readIf("MERGE")) {
                    c = parseMerge();
                }
                break;
            case 'p':
            case 'P':
                if (readIf("PREPARE")) {
                    c = parsePrepare();
                }
                break;
            case 'r':
            case 'R':
                if (readIf("ROLLBACK")) {
                    c = parseRollback();
                } else if (readIf("REVOKE")) {
                    c = parseGrantRevoke(CommandInterface.REVOKE);
                } else if (readIf("RUNSCRIPT")) {
                    c = parseRunScript();
                } else if (readIf("RELEASE")) {
                    c = parseReleaseSavepoint();
                } else if (readIf("REPLACE")) {
                    c = parseReplace();
                }
                break;
            case 's':
            case 'S':
                if (isToken("SELECT")) {
                    c = parseSelect();
                } else if (readIf("SET")) {
                    c = parseSet();
                } else if (readIf("SAVEPOINT")) {
                    c = parseSavepoint();
                } else if (readIf("SCRIPT")) {
                    c = parseScript();
                } else if (readIf("SHUTDOWN")) {
                    c = parseShutdown();
                } else if (readIf("SHOW")) {
                    c = parseShow();
                }
                break;
            case 't':
            case 'T':
                if (readIf("TRUNCATE")) {
                    c = parseTruncate();
                }
                break;
            case 'u':
            case 'U':
                if (readIf("UPDATE")) {
                    c = parseUpdate();
                } else if (readIf("USE")) {
                    c = parseUse();
                }
                break;
            case 'v':
            case 'V':
                if (readIf("VALUES")) {
                    c = parseValues();
                }
                break;
            case 'w':
            case 'W':
                if (readIf("WITH")) {
                    c = parseWithStatementOrQuery();
                }
                break;
            case ';':
                c = new NoOperation(session);
                break;
            default:
                throw getSyntaxError();
        }
        if (indexedParameterList != null) {
            for (int i = 0, size = indexedParameterList.size(); i < size; i++) {
                if (indexedParameterList.get(i) == null) {
                    indexedParameterList.set(i, new Parameter(i));
                }
            }
            parameters = indexedParameterList;
        }
        if (readIf("{")) {
            do {
                int index = (int) readLong() - 1;
                if (index < 0 || index >= parameters.size()) {
                    throw getSyntaxError();
                }
                Parameter p = parameters.get(index);
                if (p == null) {
                    throw getSyntaxError();
                }
                read(":");
                Expression expr = readExpression();
                expr = expr.optimize(session);
                p.setValue(expr.getValue(session));
            } while (readIf(","));
            read("}");
            for (Parameter p : parameters) {
                p.checkSet();
            }
            parameters.clear();
        }
    }
    if (c == null) {
        throw getSyntaxError();
    }
    setSQL(c, null, start);
    return c;
}

Example 22 with Prepared

use of org.h2.test.db.Db.Prepared in project h2database by h2database.

the class AlterTableAlterColumn method checkNoNullValues.

private void checkNoNullValues(Table table) {
    String sql = "SELECT COUNT(*) FROM " + table.getSQL() + " WHERE " + oldColumn.getSQL() + " IS NULL";
    Prepared command = session.prepare(sql);
    ResultInterface result = command.query(0);
    result.next();
    if (result.currentRow()[0].getInt() > 0) {
        throw DbException.get(ErrorCode.COLUMN_CONTAINS_NULL_VALUES_1, oldColumn.getSQL());
    }
}

Example 23 with Prepared

use of org.h2.test.db.Db.Prepared in project h2database by h2database.

the class Parser method parseWith.

private Prepared parseWith() {
    List<TableView> viewsCreated = new ArrayList<>();
    readIf("RECURSIVE");
    // this WITH statement might not be a temporary view - allow optional keyword to
    // tell us that this keyword. This feature will not be documented - H2 internal use only.
    boolean isPersistent = readIf("PERSISTENT");
    // as in CREATE VIEW abc AS WITH my_cte - this auto detects that condition
    if (session.isParsingCreateView()) {
        isPersistent = true;
    }
    do {
        viewsCreated.add(parseSingleCommonTableExpression(isPersistent));
    } while (readIf(","));
    Prepared p = null;
    // reverse the order of constructed CTE views - as the destruction order
    // (since later created view may depend on previously created views -
    // we preserve that dependency order in the destruction sequence )
    // used in setCteCleanups
    Collections.reverse(viewsCreated);
    if (isToken("SELECT")) {
        Query query = parseSelectUnion();
        query.setPrepareAlways(true);
        query.setNeverLazy(true);
        p = query;
    } else if (readIf("INSERT")) {
        p = parseInsert();
        p.setPrepareAlways(true);
    } else if (readIf("UPDATE")) {
        p = parseUpdate();
        p.setPrepareAlways(true);
    } else if (readIf("MERGE")) {
        p = parseMerge();
        p.setPrepareAlways(true);
    } else if (readIf("DELETE")) {
        p = parseDelete();
        p.setPrepareAlways(true);
    } else if (readIf("CREATE")) {
        if (!isToken("TABLE")) {
            throw DbException.get(ErrorCode.SYNTAX_ERROR_1, WITH_STATEMENT_SUPPORTS_LIMITED_SUB_STATEMENTS);
        }
        p = parseCreate();
        p.setPrepareAlways(true);
    } else {
        throw DbException.get(ErrorCode.SYNTAX_ERROR_1, WITH_STATEMENT_SUPPORTS_LIMITED_SUB_STATEMENTS);
    }
    // dependencies) - but only if they are not persistent
    if (!isPersistent) {
        p.setCteCleanups(viewsCreated);
    }
    return p;
}

Example 24 with Prepared

use of org.h2.test.db.Db.Prepared in project h2database by h2database.

the class Parser method parseWithStatementOrQuery.

private Prepared parseWithStatementOrQuery() {
    int paramIndex = parameters.size();
    Prepared command = parseWith();
    ArrayList<Parameter> params = New.arrayList();
    for (int i = paramIndex, size = parameters.size(); i < size; i++) {
        params.add(parameters.get(i));
    }
    command.setParameterList(params);
    if (command instanceof Query) {
        Query query = (Query) command;
        query.init();
    }
    return command;
}

Example 25 with Prepared

use of org.h2.test.db.Db.Prepared in project h2database by h2database.

the class Parser method setSQL.

private void setSQL(Prepared command, String start, int startIndex) {
    String sql = originalSQL.substring(startIndex, lastParseIndex).trim();
    if (start != null) {
        sql = start + " " + sql;
    }
    command.setSQL(sql);
}