Coverage report

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org.apache.commons.validator.routines.BigDecimalValidator |
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     /*
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      * $Id: BigDecimalValidator.java 386637 2006-03-17 13:22:26Z niallp $
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      * $Revision: 386637 $
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      * $Date: 2006-03-17 13:22:26 +0000 (Fri, 17 Mar 2006) $
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      *
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      * ====================================================================
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      * Copyright 2006 The Apache Software Foundation
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      *
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      * Licensed under the Apache License, Version 2.0 (the "License");
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      * you may not use this file except in compliance with the License.
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      * You may obtain a copy of the License at
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      *
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      *     http://www.apache.org/licenses/LICENSE-2.0
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      *
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      * Unless required by applicable law or agreed to in writing, software
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      * distributed under the License is distributed on an "AS IS" BASIS,
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      * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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      * See the License for the specific language governing permissions and
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      * limitations under the License.
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      */
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     package org.apache.commons.validator.routines;
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     import java.math.BigDecimal;
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     import java.text.Format;
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     import java.text.NumberFormat;
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     import java.util.Locale;
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     /**
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      * <p><b>BigDecimal Validation</b> and Conversion routines (<code>java.math.BigDecimal</code>).</p>
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      *
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      * <p>This validator provides a number of methods for
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      *    validating/converting a <code>String</code> value to
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      *    a <code>BigDecimal</code> using <code>java.text.NumberFormat</code>
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      *    to parse either:</p>
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      *    <ul>
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      *       <li>using the default format for the default <code>Locale</code></li>
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      *       <li>using a specified pattern with the default <code>Locale</code></li>
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      *       <li>using the default format for a specified <code>Locale</code></li>
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      *       <li>using a specified pattern with a specified <code>Locale</code></li>
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      *    </ul>
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      *
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      * <p>Use one of the <code>isValid()</code> methods to just validate or
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      *    one of the <code>validate()</code> methods to validate and receive a
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      *    <i>converted</i> <code>BigDecimal</code> value.</p>
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      *
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      * <p>Fraction/decimal values are automatically trimmed to the appropriate length.</p>
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      *
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      * <p>Once a value has been sucessfully converted the following
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      *    methods can be used to perform minimum, maximum and range checks:</p>
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      *    <ul>
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      *       <li><code>minValue()</code> checks whether the value is greater
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      *           than or equal to a specified minimum.</li>
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      *       <li><code>maxValue()</code> checks whether the value is less
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      *           than or equal to a specified maximum.</li>
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      *       <li><code>isInRange()</code> checks whether the value is within
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      *           a specified range of values.</li>
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      *    </ul>
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      *
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      * <p>So that the same mechanism used for parsing an <i>input</i> value
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      *    for validation can be used to format <i>output</i>, corresponding
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      *    <code>format()</code> methods are also provided. That is you can
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      *    format either:</p>
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      *    <ul>
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      *       <li>using the default format for the default <code>Locale</code></li>
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      *       <li>using a specified pattern with the default <code>Locale</code></li>
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      *       <li>using the default format for a specified <code>Locale</code></li>
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      *       <li>using a specified pattern with a specified <code>Locale</code></li>
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      *    </ul>
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      *
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      * @version $Revision: 386637 $ $Date: 2006-03-17 13:22:26 +0000 (Fri, 17 Mar 2006) $
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      * @since Validator 1.3.0
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      */
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     public class BigDecimalValidator extends AbstractNumberValidator {
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         private static final BigDecimalValidator VALIDATOR = new BigDecimalValidator();
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         /**
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          * Return a singleton instance of this validator.
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          * @return A singleton instance of the BigDecimalValidator.
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          */
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         public static BigDecimalValidator getInstance() {
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             return VALIDATOR;
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         }
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         /**
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          * Construct a <i>strict</i> instance.
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          */
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         public BigDecimalValidator() {
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             this(true);
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         }
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         /**
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          * <p>Construct an instance with the specified strict setting.</p>
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          *
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          * @param strict <code>true</code> if strict
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          *        <code>Format</code> parsing should be used.
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          */
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         public BigDecimalValidator(boolean strict) {
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             this(strict, STANDARD_FORMAT, true);
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         }
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         /**
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          * <p>Construct an instance with the specified strict setting
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          *    and format type.</p>
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          *
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          * <p>The <code>formatType</code> specified what type of
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          *    <code>NumberFormat</code> is created - valid types
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          *    are:</p>
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          *    <ul>
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          *       <li>AbstractNumberValidator.STANDARD_FORMAT -to create
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          *           <i>standard</i> number formats (the default).</li>
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          *       <li>AbstractNumberValidator.CURRENCY_FORMAT -to create
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          *           <i>currency</i> number formats.</li>
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          *       <li>AbstractNumberValidator.PERCENT_FORMAT -to create
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          *           <i>percent</i> number formats (the default).</li>
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          *    </ul>
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          *
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          * @param strict <code>true</code> if strict
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          *        <code>Format</code> parsing should be used.
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          * @param formatType The <code>NumberFormat</code> type to
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          *        create for validation, default is STANDARD_FORMAT.
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          * @param allowFractions <code>true</code> if fractions are
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          *        allowed or <code>false</code> if integers only.
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          */
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         protected BigDecimalValidator(boolean strict, int formatType,
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                 boolean allowFractions) {
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             super(strict, formatType, allowFractions);
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         }
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         /**
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          * <p>Validate/convert a <code>BigDecimal</code> using the default
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          *    <code>Locale</code>.
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          *
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          * @param value The value validation is being performed on.
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          * @return The parsed <code>BigDecimal</code> if valid or <code>null</code>
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          *  if invalid.
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          */
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         public BigDecimal validate(String value) {
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             return (BigDecimal)parse(value, (String)null, (Locale)class="keyword">null);
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         }
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         /**
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          * <p>Validate/convert a <code>BigDecimal</code> using the
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          *    specified <i>pattern</i>.
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          *
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          * @param value The value validation is being performed on.
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          * @param pattern The pattern used to validate the value against, or the
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          *        default for the <code>Locale</code> if <code>null</code>.
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          * @return The parsed <code>BigDecimal</code> if valid or <code>null</code> if invalid.
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          */
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         public BigDecimal validate(String value, String pattern) {
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             return (BigDecimal)parse(value, pattern, (Locale)null);
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         }
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         /**
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          * <p>Validate/convert a <code>BigDecimal</code> using the
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          *    specified <code>Locale</code>.
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          *
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          * @param value The value validation is being performed on.
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          * @param locale The locale to use for the number format, system default if null.
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          * @return The parsed <code>BigDecimal</code> if valid or <code>null</code> if invalid.
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          */
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         public BigDecimal validate(String value, Locale locale) {
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             return (BigDecimal)parse(value, (String)null, locale);
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         }
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         /**
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          * <p>Validate/convert a <code>BigDecimal</code> using the
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          *    specified pattern and/ or <code>Locale</code>.
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          *
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          * @param value The value validation is being performed on.
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          * @param pattern The pattern used to validate the value against, or the
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          *        default for the <code>Locale</code> if <code>null</code>.
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          * @param locale The locale to use for the date format, system default if null.
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          * @return The parsed <code>BigDecimal</code> if valid or <code>null</code> if invalid.
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          */
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         public BigDecimal validate(String value, String pattern, Locale locale) {
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             return (BigDecimal)parse(value, pattern, locale);
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         }
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         /**
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          * Check if the value is within a specified range.
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          *
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          * @param value The <code>Number</code> value to check.
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          * @param min The minimum value of the range.
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          * @param max The maximum value of the range.
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          * @return <code>true</code> if the value is within the
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          *         specified range.
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          */
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         public boolean isInRange(BigDecimal value, double min, class="keyword">double max) {
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             return (value.doubleValue() >= min && value.doubleValue() <= max);
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         }
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         /**
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          * Check if the value is greater than or equal to a minimum.
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          *
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          * @param value The value validation is being performed on.
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          * @param min The minimum value.
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          * @return <code>true</code> if the value is greater than
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          *         or equal to the minimum.
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          */
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         public boolean minValue(BigDecimal value, double min) {
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             return (value.doubleValue() >= min);
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         }
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         /**
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          * Check if the value is less than or equal to a maximum.
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          *
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          * @param value The value validation is being performed on.
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          * @param max The maximum value.
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          * @return <code>true</code> if the value is less than
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          *         or equal to the maximum.
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          */
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         public boolean maxValue(BigDecimal value, double max) {
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             return (value.doubleValue() <= max);
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         }
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         /**
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          * Convert the parsed value to a <code>BigDecimal</code>.
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          *
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          * @param value The parsed <code>Number</code> object created.
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          * @param formatter The Format used to parse the value with.
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          * @return The parsed <code>Number</code> converted to a
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          *         <code>BigDecimal</code>.
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          */
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         protected Object processParsedValue(Object value, Format formatter) {
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             BigDecimal decimal = null;
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             if (value instanceof Long) {
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                 decimal = BigDecimal.valueOf(((Long)value).longValue());
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             } else {
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                 decimal = new BigDecimal(value.toString());
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             }
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             int scale = determineScale((NumberFormat)formatter);
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             if (scale >= 0) {
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                 decimal = decimal.setScale(scale, BigDecimal.ROUND_DOWN);
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             }
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             return decimal;
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         }
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     }

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