001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018
019package org.apache.hadoop.record.compiler;
020
021import org.apache.hadoop.classification.InterfaceAudience;
022import org.apache.hadoop.classification.InterfaceStability;
023
024
025/**
026 * @deprecated Replaced by <a href="https://hadoop.apache.org/avro/">Avro</a>.
027 */
028@Deprecated
029@InterfaceAudience.Public
030@InterfaceStability.Stable
031public class JDouble extends JType {
032  
033  class JavaDouble extends JavaType {
034    
035    JavaDouble() {
036      super("double", "Double", "Double", "TypeID.RIOType.DOUBLE");
037    }
038    
039    String getTypeIDObjectString() {
040      return "org.apache.hadoop.record.meta.TypeID.DoubleTypeID";
041    }
042
043    void genHashCode(CodeBuffer cb, String fname) {
044      String tmp = "Double.doubleToLongBits("+fname+")";
045      cb.append(Consts.RIO_PREFIX + "ret = (int)("+tmp+"^("+tmp+">>>32));\n");
046    }
047    
048    void genSlurpBytes(CodeBuffer cb, String b, String s, String l) {
049      cb.append("{\n");
050      cb.append("if ("+l+"<8) {\n");
051      cb.append("throw new java.io.IOException(\"Double is exactly 8 bytes."+
052                " Provided buffer is smaller.\");\n");
053      cb.append("}\n");
054      cb.append(s+"+=8; "+l+"-=8;\n");
055      cb.append("}\n");
056    }
057    
058    void genCompareBytes(CodeBuffer cb) {
059      cb.append("{\n");
060      cb.append("if (l1<8 || l2<8) {\n");
061      cb.append("throw new java.io.IOException(\"Double is exactly 8 bytes."+
062                " Provided buffer is smaller.\");\n");
063      cb.append("}\n");
064      cb.append("double d1 = org.apache.hadoop.record.Utils.readDouble(b1, s1);\n");
065      cb.append("double d2 = org.apache.hadoop.record.Utils.readDouble(b2, s2);\n");
066      cb.append("if (d1 != d2) {\n");
067      cb.append("return ((d1-d2) < 0) ? -1 : 0;\n");
068      cb.append("}\n");
069      cb.append("s1+=8; s2+=8; l1-=8; l2-=8;\n");
070      cb.append("}\n");
071    }
072  }
073
074  class CppDouble extends CppType {
075    
076    CppDouble() {
077      super("double");
078    }
079    
080    String getTypeIDObjectString() {
081      return "new ::hadoop::TypeID(::hadoop::RIOTYPE_DOUBLE)";
082    }
083  }
084
085  
086  /** Creates a new instance of JDouble */
087  public JDouble() {
088    setJavaType(new JavaDouble());
089    setCppType(new CppDouble());
090    setCType(new CType());
091  }
092  
093  String getSignature() {
094    return "d";
095  }
096}