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 /**
028 * @deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.
029 */
030 @Deprecated
031 @InterfaceAudience.Public
032 @InterfaceStability.Stable
033 public class JMap extends JCompType {
034
035 static private int level = 0;
036
037 static private String getLevel() { return Integer.toString(level); }
038
039 static private void incrLevel() { level++; }
040
041 static private void decrLevel() { level--; }
042
043 static private String getId(String id) { return id+getLevel(); }
044
045 private JType keyType;
046 private JType valueType;
047
048 class JavaMap extends JavaCompType {
049
050 JType.JavaType key;
051 JType.JavaType value;
052
053 JavaMap(JType.JavaType key, JType.JavaType value) {
054 super("java.util.TreeMap<"+key.getWrapperType()+","+value.getWrapperType()+">",
055 "Map",
056 "java.util.TreeMap<"+key.getWrapperType()+","+value.getWrapperType()+">",
057 "TypeID.RIOType.MAP");
058 this.key = key;
059 this.value = value;
060 }
061
062 String getTypeIDObjectString() {
063 return "new org.apache.hadoop.record.meta.MapTypeID(" +
064 key.getTypeIDObjectString() + ", " +
065 value.getTypeIDObjectString() + ")";
066 }
067
068 void genSetRTIFilter(CodeBuffer cb, Map<String, Integer> nestedStructMap) {
069 key.genSetRTIFilter(cb, nestedStructMap);
070 value.genSetRTIFilter(cb, nestedStructMap);
071 }
072
073 void genCompareTo(CodeBuffer cb, String fname, String other) {
074 String setType = "java.util.Set<"+key.getWrapperType()+"> ";
075 String iterType = "java.util.Iterator<"+key.getWrapperType()+"> ";
076 cb.append("{\n");
077 cb.append(setType+getId(Consts.RIO_PREFIX + "set1")+" = "+
078 fname+".keySet();\n");
079 cb.append(setType+getId(Consts.RIO_PREFIX + "set2")+" = "+
080 other+".keySet();\n");
081 cb.append(iterType+getId(Consts.RIO_PREFIX + "miter1")+" = "+
082 getId(Consts.RIO_PREFIX + "set1")+".iterator();\n");
083 cb.append(iterType+getId(Consts.RIO_PREFIX + "miter2")+" = "+
084 getId(Consts.RIO_PREFIX + "set2")+".iterator();\n");
085 cb.append("for(; "+getId(Consts.RIO_PREFIX + "miter1")+".hasNext() && "+
086 getId(Consts.RIO_PREFIX + "miter2")+".hasNext();) {\n");
087 cb.append(key.getType()+" "+getId(Consts.RIO_PREFIX + "k1")+
088 " = "+getId(Consts.RIO_PREFIX + "miter1")+".next();\n");
089 cb.append(key.getType()+" "+getId(Consts.RIO_PREFIX + "k2")+
090 " = "+getId(Consts.RIO_PREFIX + "miter2")+".next();\n");
091 key.genCompareTo(cb, getId(Consts.RIO_PREFIX + "k1"),
092 getId(Consts.RIO_PREFIX + "k2"));
093 cb.append("if (" + Consts.RIO_PREFIX + "ret != 0) { return " +
094 Consts.RIO_PREFIX + "ret; }\n");
095 cb.append("}\n");
096 cb.append(Consts.RIO_PREFIX + "ret = ("+getId(Consts.RIO_PREFIX + "set1")+
097 ".size() - "+getId(Consts.RIO_PREFIX + "set2")+".size());\n");
098 cb.append("}\n");
099 }
100
101 void genReadMethod(CodeBuffer cb, String fname, String tag, boolean decl) {
102 if (decl) {
103 cb.append(getType()+" "+fname+";\n");
104 }
105 cb.append("{\n");
106 incrLevel();
107 cb.append("org.apache.hadoop.record.Index " +
108 getId(Consts.RIO_PREFIX + "midx")+" = " +
109 Consts.RECORD_INPUT + ".startMap(\""+tag+"\");\n");
110 cb.append(fname+"=new "+getType()+"();\n");
111 cb.append("for (; !"+getId(Consts.RIO_PREFIX + "midx")+".done(); "+
112 getId(Consts.RIO_PREFIX + "midx")+".incr()) {\n");
113 key.genReadMethod(cb, getId(Consts.RIO_PREFIX + "k"),
114 getId(Consts.RIO_PREFIX + "k"), true);
115 value.genReadMethod(cb, getId(Consts.RIO_PREFIX + "v"),
116 getId(Consts.RIO_PREFIX + "v"), true);
117 cb.append(fname+".put("+getId(Consts.RIO_PREFIX + "k")+","+
118 getId(Consts.RIO_PREFIX + "v")+");\n");
119 cb.append("}\n");
120 cb.append(Consts.RECORD_INPUT + ".endMap(\""+tag+"\");\n");
121 decrLevel();
122 cb.append("}\n");
123 }
124
125 void genWriteMethod(CodeBuffer cb, String fname, String tag) {
126 String setType = "java.util.Set<java.util.Map.Entry<"+
127 key.getWrapperType()+","+value.getWrapperType()+">> ";
128 String entryType = "java.util.Map.Entry<"+
129 key.getWrapperType()+","+value.getWrapperType()+"> ";
130 String iterType = "java.util.Iterator<java.util.Map.Entry<"+
131 key.getWrapperType()+","+value.getWrapperType()+">> ";
132 cb.append("{\n");
133 incrLevel();
134 cb.append(Consts.RECORD_OUTPUT + ".startMap("+fname+",\""+tag+"\");\n");
135 cb.append(setType+getId(Consts.RIO_PREFIX + "es")+" = "+
136 fname+".entrySet();\n");
137 cb.append("for("+iterType+getId(Consts.RIO_PREFIX + "midx")+" = "+
138 getId(Consts.RIO_PREFIX + "es")+".iterator(); "+
139 getId(Consts.RIO_PREFIX + "midx")+".hasNext();) {\n");
140 cb.append(entryType+getId(Consts.RIO_PREFIX + "me")+" = "+
141 getId(Consts.RIO_PREFIX + "midx")+".next();\n");
142 cb.append(key.getType()+" "+getId(Consts.RIO_PREFIX + "k")+" = "+
143 getId(Consts.RIO_PREFIX + "me")+".getKey();\n");
144 cb.append(value.getType()+" "+getId(Consts.RIO_PREFIX + "v")+" = "+
145 getId(Consts.RIO_PREFIX + "me")+".getValue();\n");
146 key.genWriteMethod(cb, getId(Consts.RIO_PREFIX + "k"),
147 getId(Consts.RIO_PREFIX + "k"));
148 value.genWriteMethod(cb, getId(Consts.RIO_PREFIX + "v"),
149 getId(Consts.RIO_PREFIX + "v"));
150 cb.append("}\n");
151 cb.append(Consts.RECORD_OUTPUT + ".endMap("+fname+",\""+tag+"\");\n");
152 cb.append("}\n");
153 decrLevel();
154 }
155
156 void genSlurpBytes(CodeBuffer cb, String b, String s, String l) {
157 cb.append("{\n");
158 incrLevel();
159 cb.append("int "+getId("mi")+
160 " = org.apache.hadoop.record.Utils.readVInt("+b+", "+s+");\n");
161 cb.append("int "+getId("mz")+
162 " = org.apache.hadoop.record.Utils.getVIntSize("+getId("mi")+");\n");
163 cb.append(s+"+="+getId("mz")+"; "+l+"-="+getId("mz")+";\n");
164 cb.append("for (int "+getId("midx")+" = 0; "+getId("midx")+
165 " < "+getId("mi")+"; "+getId("midx")+"++) {");
166 key.genSlurpBytes(cb, b, s, l);
167 value.genSlurpBytes(cb, b, s, l);
168 cb.append("}\n");
169 decrLevel();
170 cb.append("}\n");
171 }
172
173 void genCompareBytes(CodeBuffer cb) {
174 cb.append("{\n");
175 incrLevel();
176 cb.append("int "+getId("mi1")+
177 " = org.apache.hadoop.record.Utils.readVInt(b1, s1);\n");
178 cb.append("int "+getId("mi2")+
179 " = org.apache.hadoop.record.Utils.readVInt(b2, s2);\n");
180 cb.append("int "+getId("mz1")+
181 " = org.apache.hadoop.record.Utils.getVIntSize("+getId("mi1")+");\n");
182 cb.append("int "+getId("mz2")+
183 " = org.apache.hadoop.record.Utils.getVIntSize("+getId("mi2")+");\n");
184 cb.append("s1+="+getId("mz1")+"; s2+="+getId("mz2")+
185 "; l1-="+getId("mz1")+"; l2-="+getId("mz2")+";\n");
186 cb.append("for (int "+getId("midx")+" = 0; "+getId("midx")+
187 " < "+getId("mi1")+" && "+getId("midx")+" < "+getId("mi2")+
188 "; "+getId("midx")+"++) {");
189 key.genCompareBytes(cb);
190 value.genSlurpBytes(cb, "b1", "s1", "l1");
191 value.genSlurpBytes(cb, "b2", "s2", "l2");
192 cb.append("}\n");
193 cb.append("if ("+getId("mi1")+" != "+getId("mi2")+
194 ") { return ("+getId("mi1")+"<"+getId("mi2")+")?-1:0; }\n");
195 decrLevel();
196 cb.append("}\n");
197 }
198 }
199
200 class CppMap extends CppCompType {
201
202 JType.CppType key;
203 JType.CppType value;
204
205 CppMap(JType.CppType key, JType.CppType value) {
206 super("::std::map< "+key.getType()+", "+ value.getType()+" >");
207 this.key = key;
208 this.value = value;
209 }
210
211 String getTypeIDObjectString() {
212 return "new ::hadoop::MapTypeID(" +
213 key.getTypeIDObjectString() + ", " +
214 value.getTypeIDObjectString() + ")";
215 }
216
217 void genSetRTIFilter(CodeBuffer cb) {
218 key.genSetRTIFilter(cb);
219 value.genSetRTIFilter(cb);
220 }
221
222 }
223
224 /** Creates a new instance of JMap */
225 public JMap(JType t1, JType t2) {
226 setJavaType(new JavaMap(t1.getJavaType(), t2.getJavaType()));
227 setCppType(new CppMap(t1.getCppType(), t2.getCppType()));
228 setCType(new CType());
229 keyType = t1;
230 valueType = t2;
231 }
232
233 String getSignature() {
234 return "{" + keyType.getSignature() + valueType.getSignature() +"}";
235 }
236 }