Examples with HandlerR2 io.confluent.ksql.util.HandlerMaps.HandlerR2 used on opensource projects

Example 1 with HandlerR2

use of io.confluent.ksql.util.HandlerMaps.HandlerR2 in project ksql by confluentinc.

the class Cli method handleStatements.

private void handleStatements(final String line) {
    final List<ParsedStatement> statements = KSQL_PARSER.parse(line);
    // validate all before executing any
    sandboxedSessionVariables = new HashMap<>(sessionVariables);
    statements.stream().map(stmt -> this.substituteVariables(stmt, true)).forEach(parsed -> {
        final StatementContext statementContext = parsed.getStatement().statement();
        final HandlerR2<StatementContext, Cli, Void, Optional> validator = STATEMENT_VALIDATORS.get(statementContext.getClass());
        if (validator != null) {
            final Optional<?> validationError = validator.handle(this, null, statementContext);
            validationError.map(o -> (RuntimeException) o).ifPresent(error -> {
                throw error;
            });
        }
    });
    // execute statements
    final StringBuilder consecutiveStatements = new StringBuilder();
    statements.stream().map(stmt -> this.substituteVariables(stmt, false)).forEach(parsed -> {
        final StatementContext statementContext = parsed.getStatement().statement();
        final String statementText = parsed.getStatementText();
        final Handler2<StatementContext, Cli, String> handler = STATEMENT_HANDLERS.get(statementContext.getClass());
        if (handler == null) {
            consecutiveStatements.append(statementText);
        } else {
            makeKsqlRequest(consecutiveStatements.toString());
            consecutiveStatements.setLength(0);
            handler.handle(this, statementText, statementContext);
        }
    });
    if (consecutiveStatements.length() != 0) {
        makeKsqlRequest(consecutiveStatements.toString());
    }
}