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

Example 11 with MetaDatabase

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

the class SqlTorodTransaction method countAll.

@Override
public long countAll(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().countAll(db, col);
}

Example 12 with MetaDatabase

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

the class SqlTorodTransaction method getCollectionSize.

@Override
public long getCollectionSize(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().getCollectionSize(db, col);
}

Example 13 with MetaDatabase

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

the class SqlTorodTransaction method findByAttRefInProjection.

@Override
public Cursor<Tuple2<Integer, KvValue<?>>> findByAttRefInProjection(String dbName, String colName, AttributeReference attRef, Collection<KvValue<?>> values) {
    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 EmptyCursor<>();
    }
    MetaCollection col = db.getMetaCollectionByName(colName);
    if (col == null) {
        LOGGER.trace("Collection " + dbName + '.' + colName + " does not exist. An empty cursor is returned");
        return new EmptyCursor<>();
    }
    if (values.isEmpty()) {
        LOGGER.trace("An empty list of values have been given as in condition. An empty cursor is returned");
        return new EmptyCursor<>();
    }
    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 EmptyCursor<>();
    }
    Multimap<MetaField, KvValue<?>> valuesMap = ArrayListMultimap.create();
    for (KvValue<?> value : values) {
        MetaField field = docPart.getMetaFieldByNameAndType(lastKey, FieldType.from(value.getType()));
        if (field != null) {
            valuesMap.put(field, value);
        }
    }
    return getInternalTransaction().getBackendTransaction().findByFieldInProjection(db, col, docPart, valuesMap);
}

Example 14 with MetaDatabase

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

the class SqlWriteTorodTransaction method deleteByAttRef.

@Override
public long deleteByAttRef(String dbName, String colName, AttributeReference attRef, KvValue<?> value) {
    MetaDatabase db = getInternalTransaction().getMetaSnapshot().getMetaDatabaseByName(dbName);
    if (db == null) {
        return 0;
    }
    MetaCollection col = db.getMetaCollectionByName(colName);
    if (col == null) {
        return 0;
    }
    TableRef tableRef = extractTableRef(attRef);
    String lastKey = extractKeyName(attRef.getKeys().get(attRef.getKeys().size() - 1));
    MetaDocPart docPart = col.getMetaDocPartByTableRef(tableRef);
    if (docPart == null) {
        return 0;
    }
    MetaField field = docPart.getMetaFieldByNameAndType(lastKey, FieldType.from(value.getType()));
    if (field == null) {
        return 0;
    }
    Collection<Integer> dids = getInternalTransaction().getBackendTransaction().findByField(db, col, docPart, field, value).asDidCursor().getRemaining();
    getInternalTransaction().getBackendTransaction().deleteDids(db, col, dids);
    return dids.size();
}

Example 15 with MetaDatabase

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

the class SqlWriteTorodTransaction method deleteAll.

@Override
public long deleteAll(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;
    }
    Collection<Integer> dids = getInternalTransaction().getBackendTransaction().findAll(db, col).asDidCursor().getRemaining();
    getInternalTransaction().getBackendTransaction().deleteDids(db, col, dids);
    return dids.size();
}