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 }