org.apache.hadoop.record.compiler.JDouble Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.record.compiler;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
/**
* @deprecated Replaced by Avro.
*/
@Deprecated
@InterfaceAudience.Public
@InterfaceStability.Stable
public class JDouble extends JType {
class JavaDouble extends JavaType {
JavaDouble() {
super("double", "Double", "Double", "TypeID.RIOType.DOUBLE");
}
@Override
String getTypeIDObjectString() {
return "org.apache.hadoop.record.meta.TypeID.DoubleTypeID";
}
@Override
void genHashCode(CodeBuffer cb, String fname) {
String tmp = "Double.doubleToLongBits("+fname+")";
cb.append(Consts.RIO_PREFIX + "ret = (int)("+tmp+"^("+tmp+">>>32));\n");
}
@Override
void genSlurpBytes(CodeBuffer cb, String b, String s, String l) {
cb.append("{\n");
cb.append("if ("+l+"<8) {\n");
cb.append("throw new java.io.IOException(\"Double is exactly 8 bytes."+
" Provided buffer is smaller.\");\n");
cb.append("}\n");
cb.append(s+"+=8; "+l+"-=8;\n");
cb.append("}\n");
}
@Override
void genCompareBytes(CodeBuffer cb) {
cb.append("{\n");
cb.append("if (l1<8 || l2<8) {\n");
cb.append("throw new java.io.IOException(\"Double is exactly 8 bytes."+
" Provided buffer is smaller.\");\n");
cb.append("}\n");
cb.append("double d1 = org.apache.hadoop.record.Utils.readDouble(b1, s1);\n");
cb.append("double d2 = org.apache.hadoop.record.Utils.readDouble(b2, s2);\n");
cb.append("if (d1 != d2) {\n");
cb.append("return ((d1-d2) < 0) ? -1 : 0;\n");
cb.append("}\n");
cb.append("s1+=8; s2+=8; l1-=8; l2-=8;\n");
cb.append("}\n");
}
}
class CppDouble extends CppType {
CppDouble() {
super("double");
}
@Override
String getTypeIDObjectString() {
return "new ::hadoop::TypeID(::hadoop::RIOTYPE_DOUBLE)";
}
}
/** Creates a new instance of JDouble */
public JDouble() {
setJavaType(new JavaDouble());
setCppType(new CppDouble());
setCType(new CType());
}
@Override
String getSignature() {
return "d";
}
}