| /* |
| * 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; |
| |
| import java.math.BigDecimal; |
| |
| import org.apache.carbondata.core.datastore.page.encoding.ColumnPageEncoderMeta; |
| import org.apache.carbondata.core.memory.CarbonUnsafe; |
| import org.apache.carbondata.core.memory.UnsafeMemoryManager; |
| import org.apache.carbondata.core.metadata.datatype.DataTypes; |
| |
| /** |
| * This extension uses unsafe memory to store page data, for variable length data type (string) |
| */ |
| public class UnsafeVarLengthColumnPage extends UnsafeVarLengthColumnPageBase { |
| |
| /** |
| * create a page |
| */ |
| UnsafeVarLengthColumnPage(ColumnPageEncoderMeta columnPageEncoderMeta, int pageSize) { |
| super(columnPageEncoderMeta, pageSize); |
| if (columnPageEncoderMeta.getStoreDataType() == DataTypes.BINARY) { |
| capacity = (int) (pageSize * DEFAULT_BINARY_SIZE * FACTOR); |
| } else { |
| capacity = (int) (pageSize * DEFAULT_ROW_SIZE * FACTOR); |
| } |
| memoryBlock = UnsafeMemoryManager.allocateMemoryWithRetry(taskId, (long) (capacity)); |
| baseAddress = memoryBlock.getBaseObject(); |
| baseOffset = memoryBlock.getBaseOffset(); |
| } |
| |
| @Override |
| public void freeMemory() { |
| if (memoryBlock != null) { |
| UnsafeMemoryManager.INSTANCE.freeMemory(taskId, memoryBlock); |
| memoryBlock = null; |
| baseAddress = null; |
| baseOffset = 0; |
| super.freeMemory(); |
| } |
| } |
| |
| @Override |
| public void putBytesAtRow(int rowId, byte[] bytes) { |
| putBytes(rowId, bytes, 0, bytes.length); |
| } |
| |
| @Override |
| public void putBytes(int rowId, byte[] bytes, int offset, int length) { |
| ensureMemory(length); |
| CarbonUnsafe.getUnsafe().copyMemory(bytes, CarbonUnsafe.BYTE_ARRAY_OFFSET + offset, |
| baseAddress, baseOffset + rowOffset.getInt(rowId), length); |
| } |
| |
| @Override |
| public void setByteArrayPage(byte[][] byteArray) { |
| if (totalLength != 0) { |
| throw new IllegalStateException("page is not empty"); |
| } |
| for (int i = 0; i < byteArray.length; i++) { |
| putBytes(i, byteArray[i]); |
| } |
| } |
| |
| @Override |
| public void putDecimal(int rowId, BigDecimal decimal) { |
| |
| } |
| |
| @Override |
| public BigDecimal getDecimal(int rowId) { |
| throw new UnsupportedOperationException( |
| "invalid data type: " + columnPageEncoderMeta.getStoreDataType()); |
| } |
| |
| @Override |
| public byte[] getBytes(int rowId) { |
| int length = rowOffset.getInt(rowId + 1) - rowOffset.getInt(rowId); |
| byte[] bytes = new byte[length]; |
| CarbonUnsafe.getUnsafe().copyMemory(baseAddress, baseOffset + rowOffset.getInt(rowId), |
| bytes, CarbonUnsafe.BYTE_ARRAY_OFFSET, length); |
| return bytes; |
| } |
| |
| @Override |
| public byte[][] getByteArrayPage() { |
| byte[][] bytes = new byte[rowOffset.getActualRowCount() - 1][]; |
| for (int rowId = 0; rowId < rowOffset.getActualRowCount() - 1; rowId++) { |
| int length = rowOffset.getInt(rowId + 1) - rowOffset.getInt(rowId); |
| byte[] rowData = new byte[length]; |
| CarbonUnsafe.getUnsafe().copyMemory(baseAddress, baseOffset + rowOffset.getInt(rowId), |
| rowData, CarbonUnsafe.BYTE_ARRAY_OFFSET, length); |
| bytes[rowId] = rowData; |
| } |
| return bytes; |
| } |
| |
| @Override |
| void copyBytes(int rowId, byte[] dest, int destOffset, int length) { |
| CarbonUnsafe.getUnsafe().copyMemory(baseAddress, baseOffset + rowOffset.getInt(rowId), |
| dest, CarbonUnsafe.BYTE_ARRAY_OFFSET + destOffset, length); |
| } |
| |
| } |