/* * Agiato: A simple no frill Cassandra API * Author: Pranab Ghosh * * Licensed under the Apache License, Version 2.0 (the "License"); you * may not use this file except in compliance with the License. You may * obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or * implied. See the License for the specific language governing * permissions and limitations under the License. */ package agiato.cassandra.api; import java.nio.ByteBuffer; import java.util.List; import org.apache.cassandra.thrift.ConsistencyLevel; import agiato.cassandra.data.ColumnValue; import agiato.cassandra.data.PrimaryKey; /** * interface for reading column family * @author pranab * */ public interface ColumnFamilyReader { /** * Retirieves all columns from standard CF * @param rowKey * @param consLevel * @return * @throws Exception */ public List<ColumnValue> retrieveColumns(String rowKey, ConsistencyLevel consLevel) throws Exception; /** * Retirieves all columns from standard CF * @param rowKey * @param consLevel * @return * @throws Exception */ public List<ColumnValue> retrieveColumns(long rowKey, ConsistencyLevel consLevel) throws Exception; /** * Retirieves all columns from standard CF * @param rowKey * @param consLevel * @return * @throws Exception */ public List<ColumnValue> retrieveColumns(double rowKey, ConsistencyLevel consLevel) throws Exception; /** * @param rowKey * @param consLevel * @return * @throws Exception */ public List<ColumnValue> retrieveColumns(ByteBuffer rowKey, ConsistencyLevel consLevel) throws Exception; /** * Retirieves a column from stanadard CF * @param rowKey * @param colName * @param consLevel * @return * @throws Exception */ public ColumnValue retrieveColumn(String rowKey, ByteBuffer colName, ConsistencyLevel consLevel) throws Exception; /** * Retirieves a column from stanadard CF * @param rowKey * @param colName * @param consLevel * @return * @throws Exception */ public ColumnValue retrieveColumn(long rowKey, ByteBuffer colName, ConsistencyLevel consLevel) throws Exception; /** * Retirieves a column from stanadard CF * @param rowKey * @param colName * @param consLevel * @return * @throws Exception */ public ColumnValue retrieveColumn(ByteBuffer rowKey, ByteBuffer colName, ConsistencyLevel consLevel) throws Exception; /** * @param rowKey * @param superCol * @param cols * @param limit * @param consLevel * @return * @throws Exception */ public List<ColumnValue> retrieveColumnSlice(long rowKey, List<ByteBuffer> cols, int limit, ConsistencyLevel consLevel) throws Exception; /** * @param rowKey * @param superCol * @param cols * @param limit * @param consLevel * @return * @throws Exception */ public List<ColumnValue> retrieveColumnSlice(String rowKey, List<ByteBuffer> cols, int limit, ConsistencyLevel consLevel) throws Exception; /** * @param rowKey * @param superCol * @param cols * @param limit * @param consLevel * @return * @throws Exception */ public List<ColumnValue> retrieveColumnSlice(ByteBuffer rowKey, List<ByteBuffer> cols, int limit, ConsistencyLevel consLevel) throws Exception; /** * @param rowKey * @param superCol * @param cols * @param limit * @param consLevel * @return * @throws Exception */ public List<ColumnValue> retrieveColumnRange(long rowKey, List<ByteBuffer> cols, int limit, ConsistencyLevel consLevel) throws Exception; /** * @param rowKey * @param superCol * @param cols * @param limit * @param consLevel * @return * @throws Exception */ public List<ColumnValue> retrieveColumnRange(String rowKey, List<ByteBuffer> cols, int limit, ConsistencyLevel consLevel) throws Exception; /** * @param rowKey * @param superCol * @param cols * @param limit * @param consLevel * @return * @throws Exception */ public List<ColumnValue> retrieveColumnRange(ByteBuffer rowKey, List<ByteBuffer> cols, int limit, ConsistencyLevel consLevel) throws Exception; /** * @param obj * @param primKey * @param consLevel * @throws Exception */ public List<Object> retrieveObject(Object obj, PrimaryKey primKey, ConsistencyLevel consLevel) throws Exception; }