Examples with MetaDatabase com.torodb.core.transaction.metainf.MetaDatabase used on opensource projects

Example 1 with MetaDatabase

use of com.torodb.core.transaction.metainf.MetaDatabase in project torodb by torodb.

the class SqlTorodTransaction method findByAttRef.

@Override
public TorodCursor findByAttRef(String dbName, String colName, AttributeReference attRef, KvValue<?> value) {
    MetaDatabase db = getInternalTransaction().getMetaSnapshot().getMetaDatabaseByName(dbName);
    if (db == null) {
        LOGGER.trace("Db with name " + dbName + " does not exist. An empty cursor is returned");
        return new EmptyTorodCursor();
    }
    MetaCollection col = db.getMetaCollectionByName(colName);
    if (col == null) {
        LOGGER.trace("Collection " + dbName + '.' + colName + " does not exist. An empty cursor is returned");
        return new EmptyTorodCursor();
    }
    TableRef ref = extractTableRef(attRef);
    String lastKey = extractKeyName(attRef.getKeys().get(attRef.getKeys().size() - 1));
    MetaDocPart docPart = col.getMetaDocPartByTableRef(ref);
    if (docPart == null) {
        LOGGER.trace("DocPart " + dbName + '.' + colName + '.' + ref + " does not exist. An empty cursor is returned");
        return new EmptyTorodCursor();
    }
    MetaField field = docPart.getMetaFieldByNameAndType(lastKey, FieldType.from(value.getType()));
    if (field == null) {
        LOGGER.trace("Field " + dbName + '.' + colName + '.' + ref + '.' + lastKey + " does not exist. An empty cursor is returned");
        return new EmptyTorodCursor();
    }
    return toToroCursor(getInternalTransaction().getBackendTransaction().findByField(db, col, docPart, field, value));
}

Example 2 with MetaDatabase

use of com.torodb.core.transaction.metainf.MetaDatabase in project torodb by torodb.

the class SqlTorodTransaction method getDocumentsSize.

@Override
public long getDocumentsSize(String dbName, String colName) {
    MetaDatabase db = getInternalTransaction().getMetaSnapshot().getMetaDatabaseByName(dbName);
    if (db == null) {
        return 0;
    }
    MetaCollection col = db.getMetaCollectionByName(colName);
    if (col == null) {
        return 0;
    }
    return getInternalTransaction().getBackendTransaction().getDocumentsSize(db, col);
}

Example 3 with MetaDatabase

use of com.torodb.core.transaction.metainf.MetaDatabase in project torodb by torodb.

the class SqlTorodTransaction method getIndexesInfo.

@Override
public Stream<IndexInfo> getIndexesInfo(String dbName, String colName) {
    MetaDatabase db = getInternalTransaction().getMetaSnapshot().getMetaDatabaseByName(dbName);
    if (db == null) {
        return Stream.empty();
    }
    MetaCollection col = db.getMetaCollectionByName(colName);
    if (col == null) {
        return Stream.empty();
    }
    return col.streamContainedMetaIndexes().map(metaIdx -> createIndexInfo(metaIdx));
}

Example 4 with MetaDatabase

use of com.torodb.core.transaction.metainf.MetaDatabase in project torodb by torodb.

the class SqlTorodTransaction method getCollectionInfo.

@Override
public CollectionInfo getCollectionInfo(String dbName, String colName) throws CollectionNotFoundException {
    MetaDatabase db = getInternalTransaction().getMetaSnapshot().getMetaDatabaseByName(dbName);
    if (db == null) {
        throw new CollectionNotFoundException(dbName, colName);
    }
    MetaCollection col = db.getMetaCollectionByName(colName);
    if (col == null) {
        throw new CollectionNotFoundException(dbName, colName);
    }
    return new CollectionInfo(db.getMetaCollectionByName(colName).getName(), Json.createObjectBuilder().build());
}

Example 5 with MetaDatabase

use of com.torodb.core.transaction.metainf.MetaDatabase in project torodb by torodb.

the class SqlTorodTransaction method getIndexInfo.

@Override
public IndexInfo getIndexInfo(String dbName, String colName, String idxName) throws IndexNotFoundException {
    MetaDatabase db = getInternalTransaction().getMetaSnapshot().getMetaDatabaseByName(dbName);
    if (db == null) {
        throw new IndexNotFoundException(dbName, colName, idxName);
    }
    MetaCollection col = db.getMetaCollectionByName(colName);
    if (col == null) {
        throw new IndexNotFoundException(dbName, colName, idxName);
    }
    MetaIndex idx = col.getMetaIndexByName(idxName);
    if (idx == null) {
        throw new IndexNotFoundException(dbName, colName, idxName);
    }
    return createIndexInfo(idx);
}