Examples with RecordMetadata com.questdb.common.RecordMetadata used on opensource projects

Example 1 with RecordMetadata

use of com.questdb.common.RecordMetadata in project questdb by bluestreak01.

the class SqlLexerOptimiser method enumerateTableColumns.

public void enumerateTableColumns(QueryModel model) throws ParserException {
    final ObjList<QueryModel> jm = model.getJoinModels();
    // deal with _this_ model first, it will always be the first element in join model list
    if (model.getTableName() != null) {
        RecordMetadata m = model.getTableMetadata(engine, tableLookupSequence);
        // todo: test that this is the case
        for (int i = 0, k = m.getColumnCount(); i < k; i++) {
            model.addField(createColumnAlias(m.getColumnName(i), model));
        }
        // validate explicitly defined timestamp, if it exists
        ExprNode timestamp = model.getTimestamp();
        if (timestamp == null) {
            if (m.getTimestampIndex() != -1) {
                model.setTimestamp(exprNodePool.next().of(ExprNode.LITERAL, m.getColumnQuick(m.getTimestampIndex()).getName(), 0, 0));
            }
        } else {
            int index = m.getColumnIndexQuiet(timestamp.token);
            if (index == -1) {
                throw ParserException.invalidColumn(timestamp.position, timestamp.token);
            } else if (m.getColumnQuick(index).getType() != ColumnType.TIMESTAMP) {
                throw ParserException.$(timestamp.position, "not a TIMESTAMP");
            }
        }
    } else {
        if (model.getNestedModel() != null) {
            enumerateTableColumns(model.getNestedModel());
            // copy columns of nested model onto parent one
            // we must treat sub-query just like we do a table
            model.copyColumnsFrom(model.getNestedModel());
        }
    }
    for (int i = 1, n = jm.size(); i < n; i++) {
        enumerateTableColumns(jm.getQuick(i));
    }
}

Example 2 with RecordMetadata

use of com.questdb.common.RecordMetadata in project questdb by bluestreak01.

the class QueryModel method createColumnNameHistogram0.

private static void createColumnNameHistogram0(CharSequenceIntHashMap histogram, QueryModel model, Factory factory, boolean ignoreJoins) throws ParserException {
    ObjList<QueryModel> jm = model.getJoinModels();
    int jmSize = ignoreJoins ? 0 : jm.size();
    int n = model.getColumns().size();
    if (n > 0) {
        for (int i = 0; i < n; i++) {
            QueryColumn qc = model.getColumns().getQuick(i);
            switch(qc.getAst().type) {
                case ExprNode.LITERAL:
                    histogram.increment(qc.getName());
                    break;
                default:
                    break;
            }
        }
    } else if (jmSize > 0) {
        for (int i = 0; i < jmSize; i++) {
            createColumnNameHistogram0(histogram, jm.getQuick(i), factory, true);
        }
    } else if (model.getJournalName() != null) {
        RecordMetadata m = model.collectJournalMetadata(factory);
        for (int i = 0, k = m.getColumnCount(); i < k; i++) {
            histogram.increment(m.getColumnName(i));
        }
    } else {
        createColumnNameHistogram0(histogram, model.getNestedModel(), factory, false);
    }
}

Example 3 with RecordMetadata

use of com.questdb.common.RecordMetadata in project questdb by bluestreak01.

the class HashJoinRecordSource method toSink.

@Override
public void toSink(CharSink sink) {
    sink.put('{');
    sink.putQuoted("op").put(':').putQuoted("HashJoinRecordSource").put(',');
    sink.putQuoted("master").put(':').put(master).put(',');
    sink.putQuoted("slave").put(':').put(slave).put(',');
    sink.putQuoted("joinOn").put(':').put('[');
    sink.put('[');
    RecordMetadata mm = master.getMetadata();
    for (int i = 0, n = masterColIndex.size(); i < n; i++) {
        if (i > 0) {
            sink.put(',');
        }
        sink.putQuoted(mm.getColumnQuick(masterColIndex.getQuick(i)).getName());
    }
    sink.put(']').put(',');
    sink.put('[');
    RecordMetadata sm = slave.getMetadata();
    for (int i = 0, n = slaveColIndex.size(); i < n; i++) {
        if (i > 0) {
            sink.put(',');
        }
        sink.putQuoted(sm.getColumnQuick(slaveColIndex.getQuick(i)).getName());
    }
    sink.put("]]}");
}