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 * Code generator for "buffer" type.
027 * 
028 * @deprecated Replaced by <a href="https://hadoop.apache.org/avro/">Avro</a>.
029 */
030@Deprecated
031@InterfaceAudience.Public
032@InterfaceStability.Stable
033public class JBuffer extends JCompType {
034  
035  class JavaBuffer extends JavaCompType {
036    
037    JavaBuffer() {
038      super("org.apache.hadoop.record.Buffer", "Buffer", 
039          "org.apache.hadoop.record.Buffer", "TypeID.RIOType.BUFFER");
040    }
041    
042    @Override
043    String getTypeIDObjectString() {
044      return "org.apache.hadoop.record.meta.TypeID.BufferTypeID";
045    }
046
047    @Override
048    void genCompareTo(CodeBuffer cb, String fname, String other) {
049      cb.append(Consts.RIO_PREFIX + "ret = "+fname+".compareTo("+other+");\n");
050    }
051    
052    @Override
053    void genEquals(CodeBuffer cb, String fname, String peer) {
054      cb.append(Consts.RIO_PREFIX + "ret = "+fname+".equals("+peer+");\n");
055    }
056    
057    @Override
058    void genHashCode(CodeBuffer cb, String fname) {
059      cb.append(Consts.RIO_PREFIX + "ret = "+fname+".hashCode();\n");
060    }
061    
062    @Override
063    void genSlurpBytes(CodeBuffer cb, String b, String s, String l) {
064      cb.append("{\n");
065      cb.append("int i = org.apache.hadoop.record.Utils.readVInt("+
066                b+", "+s+");\n");
067      cb.append("int z = org.apache.hadoop.record.Utils.getVIntSize(i);\n");
068      cb.append(s+" += z+i; "+l+" -= (z+i);\n");
069      cb.append("}\n");
070    }
071    
072    @Override
073    void genCompareBytes(CodeBuffer cb) {
074      cb.append("{\n");
075      cb.append("int i1 = org.apache.hadoop.record.Utils.readVInt(b1, s1);\n");
076      cb.append("int i2 = org.apache.hadoop.record.Utils.readVInt(b2, s2);\n");
077      cb.append("int z1 = org.apache.hadoop.record.Utils.getVIntSize(i1);\n");
078      cb.append("int z2 = org.apache.hadoop.record.Utils.getVIntSize(i2);\n");
079      cb.append("s1+=z1; s2+=z2; l1-=z1; l2-=z2;\n");
080      cb.append("int r1 = org.apache.hadoop.record.Utils.compareBytes(b1,s1,i1,b2,s2,i2);\n");
081      cb.append("if (r1 != 0) { return (r1<0)?-1:0; }\n");
082      cb.append("s1+=i1; s2+=i2; l1-=i1; l1-=i2;\n");
083      cb.append("}\n");
084    }
085  }
086  
087  class CppBuffer extends CppCompType {
088    
089    CppBuffer() {
090      super(" ::std::string");
091    }
092    
093    @Override
094    void genGetSet(CodeBuffer cb, String fname) {
095      cb.append("virtual const "+getType()+"& get"+toCamelCase(fname)+"() const {\n");
096      cb.append("return "+fname+";\n");
097      cb.append("}\n");
098      cb.append("virtual "+getType()+"& get"+toCamelCase(fname)+"() {\n");
099      cb.append("return "+fname+";\n");
100      cb.append("}\n");
101    }
102    
103    @Override
104    String getTypeIDObjectString() {
105      return "new ::hadoop::TypeID(::hadoop::RIOTYPE_BUFFER)";
106    }
107
108  }
109  /** Creates a new instance of JBuffer */
110  public JBuffer() {
111    setJavaType(new JavaBuffer());
112    setCppType(new CppBuffer());
113    setCType(new CCompType());
114  }
115  
116  @Override
117  String getSignature() {
118    return "B";
119  }
120}