Examples with KsqlParser io.confluent.ksql.parser.KsqlParser used on opensource projects

Example 1 with KsqlParser

use of io.confluent.ksql.parser.KsqlParser in project ksql by confluentinc.

the class KsqlEngine method parseQueries.

// Visible for Testing
List<Pair<String, Statement>> parseQueries(final String queriesString, final Map<String, Object> overriddenProperties, final MetaStore tempMetaStore) {
    try {
        MetaStore tempMetaStoreForParser = tempMetaStore.clone();
        // Parse and AST creation
        KsqlParser ksqlParser = new KsqlParser();
        List<SqlBaseParser.SingleStatementContext> parsedStatements = ksqlParser.getStatements(queriesString);
        List<Pair<String, Statement>> queryList = new ArrayList<>();
        for (SqlBaseParser.SingleStatementContext singleStatementContext : parsedStatements) {
            Pair<Statement, DataSourceExtractor> statementInfo = ksqlParser.prepareStatement(singleStatementContext, tempMetaStoreForParser);
            Statement statement = statementInfo.getLeft();
            Pair<String, Statement> queryPair = buildSingleQueryAst(statement, getStatementString(singleStatementContext), tempMetaStore, tempMetaStoreForParser, overriddenProperties);
            if (queryPair != null) {
                queryList.add(queryPair);
            }
        }
        return queryList;
    } catch (Exception e) {
        throw new ParseFailedException("Parsing failed on KsqlEngine msg:" + e.getMessage(), e);
    }
}

Example 2 with KsqlParser

use of io.confluent.ksql.parser.KsqlParser in project ksql by confluentinc.

the class KsqlResource method getStatementStrings.

public List<String> getStatementStrings(String ksqlString) {
    List<SqlBaseParser.SingleStatementContext> statementContexts = new KsqlParser().getStatements(ksqlString);
    List<String> result = new ArrayList<>(statementContexts.size());
    for (SqlBaseParser.SingleStatementContext statementContext : statementContexts) {
        // Taken from http://stackoverflow
        // .com/questions/16343288/how-do-i-get-the-original-text-that-an-antlr4-rule-matched
        CharStream charStream = statementContext.start.getInputStream();
        result.add(charStream.getText(new Interval(statementContext.start.getStartIndex(), statementContext.stop.getStopIndex())));
    }
    return result;
}