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    
019    package org.apache.hadoop.record.compiler;
020    
021    import org.apache.hadoop.classification.InterfaceAudience;
022    import 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
033    public 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    }