| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.carbondata.core.datastore.page.encoding; |
| |
| import java.io.IOException; |
| import java.util.BitSet; |
| |
| import org.apache.carbondata.core.datastore.ReusableDataBuffer; |
| import org.apache.carbondata.core.datastore.page.ColumnPage; |
| import org.apache.carbondata.core.scan.result.vector.ColumnVectorInfo; |
| |
| public interface ColumnPageDecoder { |
| |
| /** |
| * Apply decoding algorithm on input byte array and return decoded column page |
| */ |
| ColumnPage decode(byte[] input, int offset, int length) throws IOException; |
| |
| /** |
| * Apply decoding algorithm on input byte array and fill the vector here. |
| */ |
| void decodeAndFillVector(byte[] input, int offset, int length, ColumnVectorInfo vectorInfo, |
| BitSet nullBits, boolean isLVEncoded, int pageSize, ReusableDataBuffer reusableDataBuffer); |
| |
| ColumnPage decode(byte[] input, int offset, int length, boolean isLVEncoded) throws IOException; |
| } |