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    String getTypeIDObjectString() {
043      return "org.apache.hadoop.record.meta.TypeID.BufferTypeID";
044    }
045
046    void genCompareTo(CodeBuffer cb, String fname, String other) {
047      cb.append(Consts.RIO_PREFIX + "ret = "+fname+".compareTo("+other+");\n");
048    }
049    
050    void genEquals(CodeBuffer cb, String fname, String peer) {
051      cb.append(Consts.RIO_PREFIX + "ret = "+fname+".equals("+peer+");\n");
052    }
053    
054    void genHashCode(CodeBuffer cb, String fname) {
055      cb.append(Consts.RIO_PREFIX + "ret = "+fname+".hashCode();\n");
056    }
057    
058    void genSlurpBytes(CodeBuffer cb, String b, String s, String l) {
059      cb.append("{\n");
060      cb.append("int i = org.apache.hadoop.record.Utils.readVInt("+
061                b+", "+s+");\n");
062      cb.append("int z = org.apache.hadoop.record.Utils.getVIntSize(i);\n");
063      cb.append(s+" += z+i; "+l+" -= (z+i);\n");
064      cb.append("}\n");
065    }
066    
067    void genCompareBytes(CodeBuffer cb) {
068      cb.append("{\n");
069      cb.append("int i1 = org.apache.hadoop.record.Utils.readVInt(b1, s1);\n");
070      cb.append("int i2 = org.apache.hadoop.record.Utils.readVInt(b2, s2);\n");
071      cb.append("int z1 = org.apache.hadoop.record.Utils.getVIntSize(i1);\n");
072      cb.append("int z2 = org.apache.hadoop.record.Utils.getVIntSize(i2);\n");
073      cb.append("s1+=z1; s2+=z2; l1-=z1; l2-=z2;\n");
074      cb.append("int r1 = org.apache.hadoop.record.Utils.compareBytes(b1,s1,i1,b2,s2,i2);\n");
075      cb.append("if (r1 != 0) { return (r1<0)?-1:0; }\n");
076      cb.append("s1+=i1; s2+=i2; l1-=i1; l1-=i2;\n");
077      cb.append("}\n");
078    }
079  }
080  
081  class CppBuffer extends CppCompType {
082    
083    CppBuffer() {
084      super(" ::std::string");
085    }
086    
087    void genGetSet(CodeBuffer cb, String fname) {
088      cb.append("virtual const "+getType()+"& get"+toCamelCase(fname)+"() const {\n");
089      cb.append("return "+fname+";\n");
090      cb.append("}\n");
091      cb.append("virtual "+getType()+"& get"+toCamelCase(fname)+"() {\n");
092      cb.append("return "+fname+";\n");
093      cb.append("}\n");
094    }
095    
096    String getTypeIDObjectString() {
097      return "new ::hadoop::TypeID(::hadoop::RIOTYPE_BUFFER)";
098    }
099
100  }
101  /** Creates a new instance of JBuffer */
102  public JBuffer() {
103    setJavaType(new JavaBuffer());
104    setCppType(new CppBuffer());
105    setCType(new CCompType());
106  }
107  
108  String getSignature() {
109    return "B";
110  }
111}