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The source code is released under:
Apache License
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/******************************************************************************* * Copyright 2012 Google, Inc.//from www. j ava2s. co m * * Licensed 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 com.turbomanage.storm.types; import com.turbomanage.storm.api.Converter; import com.turbomanage.storm.types.TypeConverter.BindType; import com.turbomanage.storm.types.TypeConverter.SqlType; @Converter(forTypes = { double.class, Double.class }, bindType = BindType.DOUBLE, sqlType = SqlType.REAL) public class DoubleConverter extends TypeConverter<Double,Double> { public static final DoubleConverter GET = new DoubleConverter(); @Override public Double toSql(Double javaValue) { return javaValue; } @Override public Double fromSql(Double sqlValue) { return sqlValue; } @Override public Double fromString(String strValue) { // use long bits as hex to preserve exact value return Double.longBitsToDouble(Long.parseLong(strValue, 16)); } @Override public String toString(Double sqlValue) { // use long bits as hex to preserve exact value // Don't use Long.toHexString! Long.parseLong doesn't understand 2's complement return (sqlValue == null) ? null : Long.toString(Double.doubleToLongBits(sqlValue), 16); } }