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     * @deprecated Replaced by <a href="https://hadoop.apache.org/avro/">Avro</a>.
026     */
027    @Deprecated
028    @InterfaceAudience.Public
029    @InterfaceStability.Stable
030    public class JFloat extends JType {
031      
032      class JavaFloat extends JavaType {
033        
034        JavaFloat() {
035          super("float", "Float", "Float", "TypeID.RIOType.FLOAT");
036        }
037        
038        @Override
039        String getTypeIDObjectString() {
040          return "org.apache.hadoop.record.meta.TypeID.FloatTypeID";
041        }
042    
043        @Override
044        void genHashCode(CodeBuffer cb, String fname) {
045          cb.append(Consts.RIO_PREFIX + "ret = Float.floatToIntBits("+fname+");\n");
046        }
047        
048        @Override
049        void genSlurpBytes(CodeBuffer cb, String b, String s, String l) {
050          cb.append("{\n");
051          cb.append("if ("+l+"<4) {\n");
052          cb.append("throw new java.io.IOException(\"Float is exactly 4 bytes."+
053                    " Provided buffer is smaller.\");\n");
054          cb.append("}\n");
055          cb.append(s+"+=4; "+l+"-=4;\n");
056          cb.append("}\n");
057        }
058        
059        @Override
060        void genCompareBytes(CodeBuffer cb) {
061          cb.append("{\n");
062          cb.append("if (l1<4 || l2<4) {\n");
063          cb.append("throw new java.io.IOException(\"Float is exactly 4 bytes."+
064                    " Provided buffer is smaller.\");\n");
065          cb.append("}\n");
066          cb.append("float f1 = org.apache.hadoop.record.Utils.readFloat(b1, s1);\n");
067          cb.append("float f2 = org.apache.hadoop.record.Utils.readFloat(b2, s2);\n");
068          cb.append("if (f1 != f2) {\n");
069          cb.append("return ((f1-f2) < 0) ? -1 : 0;\n");
070          cb.append("}\n");
071          cb.append("s1+=4; s2+=4; l1-=4; l2-=4;\n");
072          cb.append("}\n");
073        }
074      }
075    
076      class CppFloat extends CppType {
077        
078        CppFloat() {
079          super("float");
080        }
081        
082        @Override
083        String getTypeIDObjectString() {
084          return "new ::hadoop::TypeID(::hadoop::RIOTYPE_FLOAT)";
085        }
086      }
087    
088      /** Creates a new instance of JFloat */
089      public JFloat() {
090        setJavaType(new JavaFloat());
091        setCppType(new CppFloat());
092        setCType(new CType());
093      }
094      
095      @Override
096      String getSignature() {
097        return "f";
098      }
099    }