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

Example 6 with MetaDatabase

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

the class SqlWriteTorodTransaction method delete.

@Override
public void delete(String dbName, String colName, Cursor<Integer> cursor) {
    MetaDatabase db = getInternalTransaction().getMetaSnapshot().getMetaDatabaseByName(dbName);
    if (db == null) {
        return;
    }
    MetaCollection col = db.getMetaCollectionByName(colName);
    if (col == null) {
        return;
    }
    getInternalTransaction().getBackendTransaction().deleteDids(db, col, cursor.getRemaining());
}

Example 7 with MetaDatabase

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

the class AbstractMetaDataReadInterface method getIndexSize.

@Override
public Long getIndexSize(@Nonnull DSLContext dsl, @Nonnull MetaDatabase database, @Nonnull MetaCollection collection, @Nonnull String indexName) {
    long result = 0;
    MetaIndex index = collection.getMetaIndexByName(indexName);
    Iterator<TableRef> tableRefIterator = index.streamTableRefs().iterator();
    while (tableRefIterator.hasNext()) {
        TableRef tableRef = tableRefIterator.next();
        MetaDocPart docPart = collection.getMetaDocPartByTableRef(tableRef);
        Iterator<? extends MetaIdentifiedDocPartIndex> docPartIndexIterator = docPart.streamIndexes().iterator();
        while (docPartIndexIterator.hasNext()) {
            MetaIdentifiedDocPartIndex docPartIndex = docPartIndexIterator.next();
            if (index.isCompatible(docPart, docPartIndex)) {
                long relatedIndexCount = collection.streamContainedMetaIndexes().filter(i -> i.isCompatible(docPart, docPartIndex)).count();
                String statement = getReadIndexSizeStatement(database.getIdentifier(), docPart.getIdentifier(), docPartIndex.getIdentifier());
                result += sqlHelper.executeStatementWithResult(dsl, statement, Context.FETCH).get(0).into(Long.class) / relatedIndexCount;
            }
        }
    }
    return result;
}

Example 8 with MetaDatabase

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

the class SqlTorodTransaction method findByAttRefIn.

@Override
public TorodCursor findByAttRefIn(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 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();
    }
    if (values.isEmpty()) {
        LOGGER.trace("An empty list of values have been given as in condition. 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();
    }
    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 toToroCursor(getInternalTransaction().getBackendTransaction().findByFieldIn(db, col, docPart, valuesMap));
}

Example 9 with MetaDatabase

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

the class SqlTorodTransaction method findAll.

@Override
public TorodCursor findAll(String dbName, String colName) {
    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();
    }
    return toToroCursor(getInternalTransaction().getBackendTransaction().findAll(db, col));
}

Example 10 with MetaDatabase

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

the class SqlTorodTransaction method fetch.

@Override
public TorodCursor fetch(String dbName, String colName, Cursor<Integer> didCursor) {
    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();
    }
    return toToroCursor(getInternalTransaction().getBackendTransaction().fetch(db, col, didCursor));
}