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 java.util.Map;
022
023 import org.apache.hadoop.classification.InterfaceAudience;
024 import org.apache.hadoop.classification.InterfaceStability;
025
026 /**
027 * @deprecated Replaced by <a href="https://hadoop.apache.org/avro/">Avro</a>.
028 */
029 @Deprecated
030 @InterfaceAudience.Public
031 @InterfaceStability.Stable
032 public class JVector extends JCompType {
033
034 static private int level = 0;
035
036 static private String getId(String id) { return id+getLevel(); }
037
038 static private String getLevel() { return Integer.toString(level); }
039
040 static private void incrLevel() { level++; }
041
042 static private void decrLevel() { level--; }
043
044 private JType type;
045
046 class JavaVector extends JavaCompType {
047
048 private JType.JavaType element;
049
050 JavaVector(JType.JavaType t) {
051 super("java.util.ArrayList<"+t.getWrapperType()+">",
052 "Vector", "java.util.ArrayList<"+t.getWrapperType()+">",
053 "TypeID.RIOType.VECTOR");
054 element = t;
055 }
056
057 @Override
058 String getTypeIDObjectString() {
059 return "new org.apache.hadoop.record.meta.VectorTypeID(" +
060 element.getTypeIDObjectString() + ")";
061 }
062
063 @Override
064 void genSetRTIFilter(CodeBuffer cb, Map<String, Integer> nestedStructMap) {
065 element.genSetRTIFilter(cb, nestedStructMap);
066 }
067
068 @Override
069 void genCompareTo(CodeBuffer cb, String fname, String other) {
070 cb.append("{\n");
071 incrLevel();
072 cb.append("int "+getId(Consts.RIO_PREFIX + "len1")+" = "+fname+
073 ".size();\n");
074 cb.append("int "+getId(Consts.RIO_PREFIX + "len2")+" = "+other+
075 ".size();\n");
076 cb.append("for(int "+getId(Consts.RIO_PREFIX + "vidx")+" = 0; "+
077 getId(Consts.RIO_PREFIX + "vidx")+"<"+getId(Consts.RIO_PREFIX + "len1")+
078 " && "+getId(Consts.RIO_PREFIX + "vidx")+"<"+
079 getId(Consts.RIO_PREFIX + "len2")+"; "+
080 getId(Consts.RIO_PREFIX + "vidx")+"++) {\n");
081 cb.append(element.getType()+" "+getId(Consts.RIO_PREFIX + "e1")+
082 " = "+fname+
083 ".get("+getId(Consts.RIO_PREFIX + "vidx")+");\n");
084 cb.append(element.getType()+" "+getId(Consts.RIO_PREFIX + "e2")+
085 " = "+other+
086 ".get("+getId(Consts.RIO_PREFIX + "vidx")+");\n");
087 element.genCompareTo(cb, getId(Consts.RIO_PREFIX + "e1"),
088 getId(Consts.RIO_PREFIX + "e2"));
089 cb.append("if (" + Consts.RIO_PREFIX + "ret != 0) { return " +
090 Consts.RIO_PREFIX + "ret; }\n");
091 cb.append("}\n");
092 cb.append(Consts.RIO_PREFIX + "ret = ("+getId(Consts.RIO_PREFIX + "len1")+
093 " - "+getId(Consts.RIO_PREFIX + "len2")+");\n");
094 decrLevel();
095 cb.append("}\n");
096 }
097
098 @Override
099 void genReadMethod(CodeBuffer cb, String fname, String tag, boolean decl) {
100 if (decl) {
101 cb.append(getType()+" "+fname+";\n");
102 }
103 cb.append("{\n");
104 incrLevel();
105 cb.append("org.apache.hadoop.record.Index "+
106 getId(Consts.RIO_PREFIX + "vidx")+" = " +
107 Consts.RECORD_INPUT + ".startVector(\""+tag+"\");\n");
108 cb.append(fname+"=new "+getType()+"();\n");
109 cb.append("for (; !"+getId(Consts.RIO_PREFIX + "vidx")+".done(); " +
110 getId(Consts.RIO_PREFIX + "vidx")+".incr()) {\n");
111 element.genReadMethod(cb, getId(Consts.RIO_PREFIX + "e"),
112 getId(Consts.RIO_PREFIX + "e"), true);
113 cb.append(fname+".add("+getId(Consts.RIO_PREFIX + "e")+");\n");
114 cb.append("}\n");
115 cb.append(Consts.RECORD_INPUT + ".endVector(\""+tag+"\");\n");
116 decrLevel();
117 cb.append("}\n");
118 }
119
120 @Override
121 void genWriteMethod(CodeBuffer cb, String fname, String tag) {
122 cb.append("{\n");
123 incrLevel();
124 cb.append(Consts.RECORD_OUTPUT + ".startVector("+fname+",\""+tag+"\");\n");
125 cb.append("int "+getId(Consts.RIO_PREFIX + "len")+" = "+fname+".size();\n");
126 cb.append("for(int "+getId(Consts.RIO_PREFIX + "vidx")+" = 0; " +
127 getId(Consts.RIO_PREFIX + "vidx")+"<"+getId(Consts.RIO_PREFIX + "len")+
128 "; "+getId(Consts.RIO_PREFIX + "vidx")+"++) {\n");
129 cb.append(element.getType()+" "+getId(Consts.RIO_PREFIX + "e")+" = "+
130 fname+".get("+getId(Consts.RIO_PREFIX + "vidx")+");\n");
131 element.genWriteMethod(cb, getId(Consts.RIO_PREFIX + "e"),
132 getId(Consts.RIO_PREFIX + "e"));
133 cb.append("}\n");
134 cb.append(Consts.RECORD_OUTPUT + ".endVector("+fname+",\""+tag+"\");\n");
135 cb.append("}\n");
136 decrLevel();
137 }
138
139 @Override
140 void genSlurpBytes(CodeBuffer cb, String b, String s, String l) {
141 cb.append("{\n");
142 incrLevel();
143 cb.append("int "+getId("vi")+
144 " = org.apache.hadoop.record.Utils.readVInt("+b+", "+s+");\n");
145 cb.append("int "+getId("vz")+
146 " = org.apache.hadoop.record.Utils.getVIntSize("+getId("vi")+");\n");
147 cb.append(s+"+="+getId("vz")+"; "+l+"-="+getId("vz")+";\n");
148 cb.append("for (int "+getId("vidx")+" = 0; "+getId("vidx")+
149 " < "+getId("vi")+"; "+getId("vidx")+"++)");
150 element.genSlurpBytes(cb, b, s, l);
151 decrLevel();
152 cb.append("}\n");
153 }
154
155 @Override
156 void genCompareBytes(CodeBuffer cb) {
157 cb.append("{\n");
158 incrLevel();
159 cb.append("int "+getId("vi1")+
160 " = org.apache.hadoop.record.Utils.readVInt(b1, s1);\n");
161 cb.append("int "+getId("vi2")+
162 " = org.apache.hadoop.record.Utils.readVInt(b2, s2);\n");
163 cb.append("int "+getId("vz1")+
164 " = org.apache.hadoop.record.Utils.getVIntSize("+getId("vi1")+");\n");
165 cb.append("int "+getId("vz2")+
166 " = org.apache.hadoop.record.Utils.getVIntSize("+getId("vi2")+");\n");
167 cb.append("s1+="+getId("vz1")+"; s2+="+getId("vz2")+
168 "; l1-="+getId("vz1")+"; l2-="+getId("vz2")+";\n");
169 cb.append("for (int "+getId("vidx")+" = 0; "+getId("vidx")+
170 " < "+getId("vi1")+" && "+getId("vidx")+" < "+getId("vi2")+
171 "; "+getId("vidx")+"++)");
172 element.genCompareBytes(cb);
173 cb.append("if ("+getId("vi1")+" != "+getId("vi2")+
174 ") { return ("+getId("vi1")+"<"+getId("vi2")+")?-1:0; }\n");
175 decrLevel();
176 cb.append("}\n");
177 }
178 }
179
180 class CppVector extends CppCompType {
181
182 private JType.CppType element;
183
184 CppVector(JType.CppType t) {
185 super("::std::vector< "+t.getType()+" >");
186 element = t;
187 }
188
189 @Override
190 String getTypeIDObjectString() {
191 return "new ::hadoop::VectorTypeID(" +
192 element.getTypeIDObjectString() + ")";
193 }
194
195 @Override
196 void genSetRTIFilter(CodeBuffer cb) {
197 element.genSetRTIFilter(cb);
198 }
199
200 }
201
202 /** Creates a new instance of JVector */
203 public JVector(JType t) {
204 type = t;
205 setJavaType(new JavaVector(t.getJavaType()));
206 setCppType(new CppVector(t.getCppType()));
207 setCType(new CCompType());
208 }
209
210 @Override
211 String getSignature() {
212 return "[" + type.getSignature() + "]";
213 }
214 }