/
DoubleConversionUtil.java
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/
DoubleConversionUtil.java
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/*
* Copyright 2012-2024 CodeLibs Project and the Others.
*
* 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 org.codelibs.core.convert;
import java.text.SimpleDateFormat;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.core.text.DecimalFormatUtil;
/**
* {@link Double}用の変換ユーティリティです。
*
* @author higa
*/
public abstract class DoubleConversionUtil {
/**
* {@link Double}に変換します。
*
* @param o
* 変換元のオブジェクト
* @return 変換された{@link Double}
*/
public static Double toDouble(final Object o) {
return toDouble(o, null);
}
/**
* {@link Double}に変換します。
*
* @param o
* 変換元のオブジェクト
* @param pattern
* パターン文字列
* @return 変換された{@link Double}
*/
public static Double toDouble(final Object o, final String pattern) {
if (o == null) {
return null;
} else if (o instanceof Double) {
return (Double) o;
} else if (o instanceof Number) {
return new Double(((Number) o).doubleValue());
} else if (o instanceof String) {
return toDouble((String) o);
} else if (o instanceof java.util.Date) {
if (pattern != null) {
return new Double(new SimpleDateFormat(pattern).format(o));
}
return new Double(((java.util.Date) o).getTime());
} else {
return toDouble(o.toString());
}
}
private static Double toDouble(final String s) {
if (StringUtil.isEmpty(s)) {
return null;
}
return new Double(DecimalFormatUtil.normalize(s));
}
/**
* {@literal double}に変換します。
*
* @param o
* 変換元のオブジェクト
* @return 変換された{@literal double}
*/
public static double toPrimitiveDouble(final Object o) {
return toPrimitiveDouble(o, null);
}
/**
* {@literal double}に変換します。
*
* @param o
* 変換元のオブジェクト
* @param pattern
* パターン文字列
* @return 変換された{@literal double}
*/
public static double toPrimitiveDouble(final Object o, final String pattern) {
if (o == null) {
return 0;
} else if (o instanceof Number) {
return ((Number) o).doubleValue();
} else if (o instanceof String) {
return toPrimitiveDouble((String) o);
} else if (o instanceof java.util.Date) {
if (pattern != null) {
return Double.parseDouble(new SimpleDateFormat(pattern).format(o));
}
return ((java.util.Date) o).getTime();
} else {
return toPrimitiveDouble(o.toString());
}
}
private static double toPrimitiveDouble(final String s) {
if (StringUtil.isEmpty(s)) {
return 0;
}
return Double.parseDouble(DecimalFormatUtil.normalize(s));
}
}