| /* |
| * 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.hadoop.hive.accumulo; |
| |
| import org.apache.accumulo.core.client.lexicoder.BigIntegerLexicoder; |
| import org.apache.accumulo.core.client.lexicoder.DoubleLexicoder; |
| import org.apache.accumulo.core.client.lexicoder.IntegerLexicoder; |
| import org.apache.accumulo.core.client.lexicoder.LongLexicoder; |
| import org.apache.hadoop.hive.serde.serdeConstants; |
| |
| import java.math.BigInteger; |
| import java.nio.ByteBuffer; |
| |
| import static java.nio.charset.StandardCharsets.UTF_8; |
| |
| /** |
| * Utility class to encode index values for accumulo. |
| */ |
| public final class AccumuloIndexLexicoder { |
| private static final IntegerLexicoder INTEGER_LEXICODER = new IntegerLexicoder(); |
| private static final DoubleLexicoder DOUBLE_LEXICODER = new DoubleLexicoder(); |
| private static final LongLexicoder LONG_LEXICODER = new LongLexicoder(); |
| private static final BigIntegerLexicoder BIG_INTEGER_LEXICODER = new BigIntegerLexicoder(); |
| private static final String DIM_PAT = "[(]+.*"; |
| |
| |
| private AccumuloIndexLexicoder() { |
| // hide constructor |
| } |
| |
| public static String getRawType(String hiveType) { |
| if (hiveType != null) { |
| return hiveType.toLowerCase().replaceFirst(DIM_PAT, "").trim(); |
| } |
| return hiveType; |
| } |
| |
| public static byte[] encodeValue(byte[] value, String hiveType, boolean stringEncoded) { |
| if (stringEncoded) { |
| return encodeStringValue(value, hiveType); |
| } else { |
| return encodeBinaryValue(value, hiveType); |
| } |
| } |
| |
| public static byte[] encodeStringValue(byte[] value, String hiveType) { |
| String rawType = getRawType(hiveType); |
| |
| switch(rawType) { |
| case serdeConstants.BOOLEAN_TYPE_NAME: |
| return Boolean.valueOf(new String(value)).toString().getBytes(UTF_8); |
| case serdeConstants.SMALLINT_TYPE_NAME : |
| case serdeConstants.TINYINT_TYPE_NAME : |
| case serdeConstants.INT_TYPE_NAME : |
| return INTEGER_LEXICODER.encode(Integer.valueOf(new String(value))); |
| case serdeConstants.FLOAT_TYPE_NAME : |
| case serdeConstants.DOUBLE_TYPE_NAME : |
| return DOUBLE_LEXICODER.encode(Double.valueOf(new String(value))); |
| case serdeConstants.BIGINT_TYPE_NAME : |
| return BIG_INTEGER_LEXICODER.encode(new BigInteger(new String(value), 10)); |
| case serdeConstants.DECIMAL_TYPE_NAME : |
| return new String(value).getBytes(UTF_8); |
| default : |
| // return the passed in string value |
| return value; |
| } |
| } |
| |
| public static byte[] encodeBinaryValue(byte[] value, String hiveType) { |
| String rawType = getRawType(hiveType); |
| |
| switch(rawType) { |
| case serdeConstants.BOOLEAN_TYPE_NAME : |
| return String.valueOf(value[0] == 1).getBytes(); |
| case serdeConstants.INT_TYPE_NAME : |
| return INTEGER_LEXICODER.encode(ByteBuffer.wrap(value).asIntBuffer().get()); |
| case serdeConstants.SMALLINT_TYPE_NAME : |
| return INTEGER_LEXICODER.encode((int)(ByteBuffer.wrap(value).asShortBuffer().get())); |
| case serdeConstants.TINYINT_TYPE_NAME : |
| return INTEGER_LEXICODER.encode((int)value[0]); |
| case serdeConstants.FLOAT_TYPE_NAME : |
| return DOUBLE_LEXICODER.encode((double)ByteBuffer.wrap(value).asFloatBuffer().get()); |
| case serdeConstants.DOUBLE_TYPE_NAME : |
| return DOUBLE_LEXICODER.encode(ByteBuffer.wrap(value).asDoubleBuffer().get()); |
| case serdeConstants.BIGINT_TYPE_NAME : |
| return BIG_INTEGER_LEXICODER.encode(new BigInteger(value)); |
| case serdeConstants.DECIMAL_TYPE_NAME : |
| return new String(value).getBytes(UTF_8); |
| default : |
| return value; |
| } |
| } |
| } |